Die lokale Struktur des étalen Homotopietyps einer über einem ro-adischen Zahlring gefaserten Fläche

Diese Doktorarbeit beschaftigt sich mit der Frage, ob für eine gefaserte Fläche X über einem p-adischen Zahlring O um jeden Punkt P von X eine Zariski- Umgebungsbasis von K(pi; 1)en für eine Menge von Primzahlen S existiert. Es wird eine positive Antwort gegeben, für den Fall, dass p in S und X eine normale gefaserte Fläche mit semi-stabiler Reduktion ist und O die l-ten Einheitswurzeln enthält für jedes l in S. Dazu werden Überlagerungen der gefaserten Fläche X konstruiert und die étale Kohomologie sowie die Abbildungen zwischen den étalen Kohomologiegruppen offener Teilmengen der Überlagerungen beschrieben

CALPHAD-based modelling of the temperature-composition-structure relationship during physical vapor deposition of Mg-Ca thin films

The temperature-dependent composition and phase formation during physical vapor deposition (PVD) of Mg-Ca thin films is modelled using a CALPHAD-based approach. Considering the Mg and Ca sublimation fluxes calculated based on the vapor pressure obtained by employing equilibrium thermochemical calculations, experimentally observed synthesis temperature trends in thin film composition and phase formation are reproduced. The model is a significant step towards understanding how synthesis parameters control composition and thereby phase formation in PVD of metals with high vapor pressures.Comment: 10 pages, 3 figure

The impact of nanoscale compositional variation on the properties of amorphous alloys

The atomic distribution in amorphous FeZr alloys is found to be close to random, nevertheless, the composition can not be viewed as being homogenous at the nm-scale. The spatial variation of the local composition is identified as the root of the unusual magnetic properties in amorphous Fe$_{Zahl}$1-xZr$_{x}$ alloys. The findings are discussed and generalised with respect to the physical properties of amorphous and crystalline materials

Upaya Meningkatkan Kompetensi Logaritma Siswa Kelas X IPA dengan Strategi Pembelajaran Aktif pada SMA Narada Jakarta

This study aims to improve the logarithmic competence of class X IPA students with active learning strategies in Narada Jakarta High School students. The research method used is classroom action research through 2 cycles and in each cycle includes activities of planning, implementation, observation and reflection. The results showed an increase in mastery of this competency starting from the first cycle of students can increase by 28% from the initial conditions of the conditions in the first cycle after the action in the second cycle increased by 30%. From the results of this class action research the researcher recommends policy making or implementing learning in this case, namely the instructor to teach learning material in small groups and with techniques to activate student

Redescription of the Deep-Sea Cirrate Octopod Cirroteuthis magna Hoyle, 1885, and Considerations on the Genus Cirroteuthis (Mollusca: Cephalopoda)

31 pages, 29 figures, 4 tables, 1 appendix.The deep-living octopod Cirroteuthis magna Hoyle, 1885 is redescribed, based on the only three specimens known of the species: a mature female (holotype) captured in the south Indian Ocean between Prince Edward and Crozet islands at 2557 m and two specimens, one submature female and one mature male, recently captured in the central Atlantic at 1300 and 3351 m depth, respectively. Video images from the capture of the latter specimen were recorded. This species is characterized by its very great size (to 1300 mm TL), making it the largest known cirrate octopod; butterfly-like shell with open wings; very voluminous eyes with large lenses; arm length 73-79% of the total length; primary web inserted at different levels on the dorsal and ventral ends of the dorso- and ventrolateral arms on both sides, and at the same level on both ends of the dorsal and ventral arms; each arm is independent of the primary web, and is connected with it by a single vertical membrane or intermediate web that is attached along the dorsum of the arm; absence of nodule at the fusion point of both webs. Very large cirri, the first cirri commencing between the 4th and 5th suckers, with three types of suckers on all the arms; cylindro-conical form and those with the acetabulum highly deformable on the first 2/3 of arms and barrel-like on the rest of the arm; absence of particularly enlarged suckers. C. magna is compared with C. muelleri and other related species. Sperm sacs and spermatozoids from C. magna and C. muelleri are described and compared. The Cirroteuthis genus is reviewed and a diagnosis is proposed. This study confirms that the members of the Cirroteuthidae family show several unusual features of great interest.During this study one of the authors (R.V.) was supported by a post-doctoral fellowship from the Spanish Ministery of Education and Science.Peer reviewe

Corn response to two fertilization rates under SW Spain conditions

12 pages, 8 tables, 15 references.Corn cv. PRISMA response (growth, plant composition, and yield) was studied in relation to two fertilizer treatments: the high rate used in irrigated fields in SW Spain (1000 kg/ha 15–15–15 fertilizer plus two applications of 400 kg urea (46%N)/ha); and the same reduced to one‐third. Plant height ( 290 cm), specific leaf area (0.018 m2/g), ear weight (210 g), kernel weight per ear (185 g), and estimated yield (16 Mg/ha) were similar with both treatments. Plant nutrient contents were similar in the leaf level, with both treatments, although the N content of stalk and kernel (at harvest) were higher (P<0.05) when the high fertilization dose was applied. DRIS indices presented N and S as the more balanced nutrients, and in general the P and Mg contents were comparatively low, and Ca and K comparatively high. Amounts of N and P removed by corn (above‐ground part) were higher than those fertilized at the lower rate. Removed K was considerably higher than the loaded amount, whichever rate of fertilization was considered. When fertilized with a comparatively low rate (for irrigated regimes in SW Spain), the natural reserves of the previously fertilized sandy loam soil used in the assay contributed to achieve a high yield with a high‐yielding corn crop.Research carried out in the framework of the contract Nº STEPCT90-0032-C (DSCN) of the CE.Peer reviewe