De statu purorum naturalium

Invocatio: [hepreaa].

De hygrometrico aëris statu

Arkit: 1 arkintunnukseton lehti, A-B4.

De statu litterarum antiquo et hodierno in imperio Rossico

Invocatio: Q.F.S.F.Q.

Verus modus quo mores populorum, ex propriis suis causis prudenter eruendi sunt

Invocatio: Favente Jehovah.

De modo, quo voluntas divina sit investiganda

Invocatio: B.C.D.

Explicatio phoenomeni optici, quo objecta aquae submersa duplicata conspiciuntur

Arkit: 1 arkintunnukseton lehti, E-F4 G2.

Nanoestruturas de carbono (nanotubos, grafeno): Quo Vadis?

We describe general considerations about the present and the future standing of carbon nanostructures, mainly carbon nanotubes and graphene. Basic concepts and definitions, select structure/property relationships, and potential applications are reviewed. The analysis of the global market for these nanostructures, the commercial products available currently, the role of the chemistry, the main challenges remaining and a brief view of the field in Brazil are also presented and discussed.

Insect juvenile hormone: from "status quo" to high society

Juvenile hormone (JH) exerts pleiotropic functions during insect life cycles. The regulation of JH biosynthesis by neuropeptides and biogenic amines, as well as the transport of JH by specific binding proteins is now well understood. In contrast, comprehending its mode of action on target organs is still hampered by the difficulties in isolating specific receptors. In concert with ecdysteroids, JH orchestrates molting and metamorphosis, and its modulatory function in molting processes has gained it the attribute "status quo" hormone. Whereas the metamorphic role of JH appears to have been widely conserved, its role in reproduction has been subject to many modifications. In many species, JH stimulates vitellogenin synthesis and uptake. In mosquitoes, however, this function has been transferred to ecdysteroids, and JH primes the ecdysteroid response of developing follicles. As reproduction includes a variety of specific behaviors, including migration and diapause, JH has come to function as a master regulator in insect reproduction. The peak of pleiotropy was definitely reached in insects exhibiting facultative polymorphisms. In wing-dimorphic crickets, differential activation of JH esterase determines wing length. The evolution of sociality in Isoptera and Hymenoptera has also extensively relied on JH. In primitively social wasps and bumble bees, JH integrates dominance position with reproductive status. In highly social insects, such as the honey bee, JH has lost its gonadotropic role and now regulates division of labor in the worker caste. Its metamorphic role has been extensively explored in the morphological differentiation of queens and workers, and in the generation of worker polymorphism, such as observed in ants.

Financial support of graduate programs in Brazil: quo vadis?

Graduate programs provide the highest level of formal education and thus are crucial for the development of any country. However, official Brazilian data clearly show a dramatic decrease in the number and values of scholarships available to graduate programs in Brazil over the last few years, despite the importance and growth of such programs. Between 1995 and 2004, investment by the Coordenadoria de Aperfeiçoamento de Pessoal do Ensino Superior (CAPES, subordinate to the Ministry of Education and Culture) in funding scholarships, corrected for inflation in the period, actually decreased by 51%. In addition, during the period between 1994 and 2004, there was a loss of about 60% in the purchasing power of the graduate scholarships provided by CAPES and the National Council for Science and Technology (CNPq). To reverse this trend, we propose the development of sectorial funding for Brazilian graduate programs to guarantee the availability and continuity of financial support for this strategic activity.

Tabula geographica Europae ad statum, quo sub finem anni 900 post Christ. nat. suit = L'Europe à la fin de l'an. 900 après naiss. de J. Chr. / in usum iuventutis erudiendae descripta a C. Kruse.

0-meridiaani: Ferro.

De artificio, quo in nutriendo fetu humano utitur natura

Arkit: 1 arkintunnukseton lehti, A-C4 D3.

De statu & religione Cornelii centurionis, ante ejus ad Jesu fidem, conversionem

Invokaatio: I.N.J.