41 |
Contribuição à geologia da região do Distrito de Cachoeirinha - MT / not availableRuiz, Amarildo Salina 10 November 1992 (has links)
O mapeamento geológico (esc.1:100.000) realizado na região do Distrito de Cachoeirinha, sudoeste de Mato Grosso, revelou a existência de dois grandes conjuntos de rochas: o Grupo Alto Jauru, uma sequência vulcano-sedimentar do tipo greenstone belt, e as Unidades Intrusivas representadas por gnaisses granodioriticos (Gnaisses São Domingos) e monzograniticos (Gnaisses Aliança), tonalitos orientados (Tonalito Cabaçal), um batolito monzogranitico com sienogranitos e granodioritos minoritários (Suíte Intrusiva Santa Cruz) e, finalmente, monzogranitos maciços (Suíte Intrusiva Alvorada). O Grupo Alto Jauru exoõe-se como um cinturão estreito e alongado (Sinforme da Fazenda Sudam) com orientação em torno de N20°W ou como megaxenólitos distribuídos no interior das Unidades Intrusivas. Os fragmentos são essencialmente hor nblenda anfibolitos cinza escuro, orientados, de granulação fina a média. A parte exposta no cinturão foi dividida em duas unidades informais: a unidade dos biotita-muscovita-granada gnaisses e dos muscovita-sillimanita-biotita xistos. A primeira ocorre na região mais externa da sinforme, constitui-se essencialmente por biotita-muscovita-granada gnaisses com intercalações subordinadas de tremolita-clorita xistos, tremolita-actinolita anfibolitos muscovita-quartzo xistos; a outra unidade, constitui-se de granada-muscovita-sillimanita-biotita-xistos e se restrige ao núcleo da estrutura dobrada. As rochas gnáissicas são representadas pelos Gnaisses São Domingos e Aliança que, na ausência de dados conclusivos, foram posicionados como contemporâneos. O primeiro é composto por gnaisses cinza escuros e cinza escuro rosados, equigranulares, de granulação média a grossa, de composição modal equivalente a dos granodioritos. Os Gnaisses Aliança são cinza claros, de granulação média e raramente grossa e possui composição modal monzogranitica. Integram ainda as Unidades Intrusivas: o Tonalito Cabaçal, um corpo estreito e alongado, constituído por rochas cinza escuras, de granulação média a grossa, equigranulares, fortemente orientados e com milonitização nas bordas; a Suíte Intrusiva Santa Cruz, um batólito alongado, composto por duas facies distintas: uma, a base de rochas róseas, grossas, orientadas, de composição monzogranitica e raramente sienogranitica, e outra composta por granodioritos grossos, equigranulares e orientados: finaliza o magmatismo, um conjunto de stooks circulares a subcirculares constituídos por rochas cinza claras e rosa acinzentadas, equigranulares, granulação fina a média e composição mozogranitica (Suíte Intrusiva Alvorada). A análise estrutural revelou uma história deformacional com pelo menos três fases super impostas de dobramentos. A primeira (D1) caracteriza-se pelo desenvolvimento de uma foliação penetrativa S1 (bandamento ou xistosidade) com orientação em torno de N50°-60°W/60°-70°NE e raramente SW, observada no Grupo Alto Jauru, Gnaisses São Domingos e Aliança. A fase Dz é marcada pelo desenvolvimento de dobras apertadas a cerradas, assimétricas, isoclinais, desenhadas pelas superfícies S1. A foliação Sz é principalmente uma clivagem de crenulação ou uma xistosidade paralela a S1 e visível nos Gnaisses e supracrustais. No tonalito Cabaçal e Suíte Santa Cruz é definida por uma xistosidade com atitude em torno de N50°-60°W/60°-70°NE. A fase Da desenvolveu estruturas localizadas e é marcada por dobras abertas, simétricas a assimétricas, com eixo caindo para NE. A foliação plano axial é uma clivagem de crenulação ou de fratura com orientação de N30°-40°E/65°-75°SE, indicando vergência para SE. / The geologic mapping (scale 1:100.000) made in the region of Cachoeirinha District. Sothwet of the state of Mato Grosso. , has shown the existence of two large sets of rocks: the Alto Jauru Group, a volcano-sedimentary sequence of the greenstone belt lype, and the Intrusive Units represented by granodioritics gneisses (São Domingos Gneisses) and monzogranitics (Aliança Gneisses) oriented tonalities (Cabaçal Tonalite), a monzogranitics batolito with minority sienogranites and granodiorites (Santa Cruz Intrusive Suite) and, finally, massive monzogranites (Intrusive Suite Alvorada). The Alto Jauru Group outcrops as a narrow and alongated belt (sinforme of the Sudam Farm) with orientation of abount N20W or as megaxenolites distributed in the interior of the Intrusive Units. The fragments are mainly oriented light gray hornblende anfibolite, with a fine to medium granulation. The outcropped part of the belt was divided in two informal units: the biolite-muscovite-garnet gneisses and the muscovite-sillimanite-biolite schists. The former appears in the most external region of the sinform, and is mainly composed of biotite-muscovite-garnet gneisses with intercalations subordinated of tremolite-clorite schists, tremolite-acnolite anfibolites and muscovite-quartz schists; the latter is formed by garnet-muscovite-sillimanite-biolite schists and restricted to the folded structure core. The gneissic rocks are represented by the São Domingos and Aliança Gneisses which, in the absence of concluding data, were placed as contemporary. The former is composed by dark-gray and dark pinkish-gray gneisses which are equigranulates, of a medium to thick granulation, and a modal composition equivalent to the granodiorites. The Aliança Gneisses are light gray, of a medium rarely thick granulation and has a monzogranitic modal composition. The Intrusive Units are also composed of Cabaçal Tonalite, which is a narrow and alongated body, formed by dark-gray rocks, of medium to thick granulation, which is equigranulated, strongly oriented and with milonitization in its borders; the Santa Cruz Intrusive Suite, an alongated batolite, composed of distinct facies: one, made of oriented thick pink rocks, of monzogranitic and rarely sienogranitic composition and the other composed of thick, equigranulated, oriented granodiorites; the magmatism ends in a set of circular to subcircular stocks made of loght gray grayish pink rocks, which are equigranulated, of a fine to medium granulation and monzogranitic composition (Alvorada Intrusive Suite). The structural analysis has shown a deformational history with at least 3 superposed folde phases. The former (D1) is characterized by the development of a penetrative foliation S1 (banding or schistosity) with orientation of about N50-60W/60-70 NE and rarely SW, observed in the Jauru Group, São Domingos and Aliança Gneisses. The Dz phase is marked by the development of closed to thick folds, which are assimetric, isoclinal, designed by the S1 surfaces. The Sz foliation is mainly a crenulation cleavage or a schistosity that is parallel to S1 and visible in the Gneisses and supracrustals. A schistosity with attitude of about N50-60W/60-70 NE is defined in the Cabaçal Tonalite and Santa Cruz Suite. The Da phase has developed a localized structure and is marked by opened folds shich are assimetric, with its axis plunging to the NE. The axial plane foliation es either a crenulation or a fracture cleavage with orientation of about N30-40E/65-75 SE, indicating vergence to SE.
|
42 |
On the Channel Estimation of Modified MT-CDMA with Code Transmit DiversityPan, Chi-Que 28 August 2004 (has links)
In this thesis, we propose a modified MT-CDMA system, which can improve channel estimation accuracy by using transmit diversity of pilot signals. We not only expound the principles and structures of the system we proposed, but analyze its performance in slow Rayleigh fading channel environment. According to different ways to assign data symbols of transmitted signals, we have two different bit error rate results. At the same transmit power, the simulation results show that when we combine comb-type pilot signals of two parallel channels to estimate channel gains, we can recover the drawbacks of comb-type pilot arrangement, which can not perform well in frequency selective fading channel. Finally, the numerical results will be also shown.
|
43 |
Reproductive behavior of Formosan Macaques (Macaca cyclopis) at Mt. LongevityHUANG, CHIH-CHIEN 10 January 2003 (has links)
Abstract
This study investigated the reproductive behaviors of Formosan macaques (Macaca cyclopis) from July 2000 to July 2002 with 608 field hours in Mt. Lonvegity. I followed troops C and Cd that resulted from a fission of troop C in Dec. 2000. During these two mating seasons, 19 sexually mature males and 19 females were involved in 188 mounting/thrusting series. These included 139 single and 49 multi-mounting thrusting series. The peak frequency of copulation was in Dec. in both years with means of 1.34/hr and 0.94/hr. However, the maximum number of males and females involved were in Nov and Nov~Dec.. with 18 (9M9F, 2001) and 22 (12M10F, 2001) individuals.
The residency and ranks of males influence their copulation strategies. Alpha males performed over half of the multi-mount copulations (55.1%), followed by non-troop males and other troop males (each, 22.45¢M). On the other hand, the highest proportion of single mount copulations were from OTM (38.13%)¡CBiting and copulation calls occurred more frequently in multi-mount than in single mount copulation. The duration of thrust was longest in the last mount of multi-mount copulation series (10.9 sec ¡Ó5.4, n=45), next in single mount (8.16 sec ¡Ó4.2).
Male dominant rank influenced the occurrence of consortships between heterosexual pairs. Nearly all of consortships observed were performed by troop males (94/105 = 89.4%), NTM just 10.48¢M(11/105 = 10.48%)¡CHigh-ranking males guarded estrous females and interfered low-ranking males' copulation. The later used sneaky mating during the absence of dominant males or in the peripheral part of a social troop with poor visibility.¡C
Troop C was dominant to troop Cd in habitat utilization and intertroop interaction. Troop C often chased troop Cd away (78.3%) or troop C withdrew voluntarily (21.7%). After the troop fission, the peak of monthly frequency of copulation in Cd was higher than that in troop C (two mating seasons: 3.33/hr versus 1.44/hr, 2.80/hr versus 0.74/hr). The birth rates of these two troops both increased from 2001 to 2002 (C: 37.5% to 81.3%; Cd: 50.0% to 100%)¡C
|
44 |
MT-WAVE: Profiling multi-tier web applications2015 June 1900 (has links)
The web is evolving: what was once primarily used for sharing static content has now evolved into a platform
for rich client-side applications. These applications do not run exclusively on the client; while the client is
responsible for presentation and some processing, there is a significant amount of processing and persistence
that happens server-side. This has advantages and disadvantages. The biggest advantage is that the user’s
data is accessible from anywhere. It doesn’t matter which device you sign into a web application from,
everything you’ve been working on is instantly accessible. The largest disadvantage is that large numbers
of servers are required to support a growing user base; unlike traditional client applications, an organization
making a web application needs to provision compute and storage resources for each expected user. This
infrastructure is designed in tiers that are responsible for different aspects of the application, and these tiers
may not even be run by the same organization.
As these systems grow in complexity, it becomes progressively more challenging to identify and solve
performance problems. While there are many measures of software system performance, web application
users only care about response latency. This “fingertip-to-eyeball performance” is the only metric that users
directly perceive: when a button is clicked in a web application, how long does it take for the desired action
to complete?
MT-WAVE is a system for solving fingertip-to-eyeball performance problems in web applications. The
system is designed for doing multi-tier tracing: each piece of the application is instrumented, execution
traces are collected, and the system merges these traces into a single coherent snapshot of system latency
at every tier. To ensure that user-perceived latency is accurately captured, the tracing begins in the web
browser. The application developer then uses the MT-WAVE Visualization System to explore the execution
traces to first identify which system is causing the largest amount of latency, and then zooms in on the
specific function calls in that tier to find optimization candidates. After fixing an identified problem, the
system is used to verify that the changes had the intended effect.
This optimization methodology and toolset is explained through a series of case studies that identify and
solve performance problems in open-source and commercial applications. These case studies demonstrate
both the utility of the MT-WAVE system and the unintuitive nature of system optimization.
|
45 |
Charakterisierung mikrostruktureller Gewebeveränderungen bei der sporadischen Creutzfeldt-Jakob-Krankheit durch Korrelation von Diffusions- und Magnetisierungstransfer-Bildgebung / Characterization of microstructural tissue changes in sporadic Creutzfeldt-Jakob disease through correlation of magnetization transfer and diffusion MRIMatros, Markus 06 July 2015 (has links)
Neuartige Kontraste in der Magnetresonanz-Bildgebung wie Diffusionswichtung (DW) oder Magnetisierungstransfer (MT) finden zunehmend Verwendung in der klinischen Diagnostik. Während bei der DW der Kontrast durch unterschiedliche Diffusionseigenschaften von Wassermolekülen in Gewebe verursacht wird, wird der MT-Kontrast durch unterschiedliche Anteile an gebundenen und freien Protonen im Gewebe beeinflusst. Der MT basiert auf einer selektiven Sättigung der an Makromolekülen gebundenen Protonen und dem anschließenden Transfer dieser Sättigung der Magnetisierung auf freie Protonen. Dieser Austausch führt zu einem Abfall der Signalsättigung von freien Protonen. Diese Methode besitzt das Potential, Rückschlüsse auf spezifische mikrostrukturelle Veränderung im Gewebe zu ziehen. In der vorliegenden Pilotstudie wurde ein neuer Parameter zur Beschreibung des MT-Kontrastes - die MT-Sättigung - auf ihr Potential untersucht, Gewebeveränderungen in einem Teil der Basalganglien bei der sporadischen Creutzfeldt-Jakob-Erkrankung (sCJK) zu detektieren. Typische mikrostrukturelle Gewebeveränderungen bei der sCJK beinhalten die Ablagerungen pathologischer Prion-Proteine, spongiformen Umbau des Neuropils sowie astrozytäre Gliose und Nervenzellverlust. Anonymisierte klinisch-diagnostische MRT-Bilddaten (3D-FLASH, DWI) von 5 Patienten mit definitiver oder wahrscheinlicher sCJD wurden retrospektiv untersucht und mit denen altersangepasster gesunder Kontrollen verglichen. Mittels einer ROI-Analyse auf den MT-Karten wurden neben dem Caput des Ncl. caudatus, dem Putamen und dem Pulvinar auch MT-Werte in der Amygdala bestimmt. Im Gegensatz zum Pulvinar und zur Amygdala konnten mit dieser Methode im Ncl. caudatus und im Putamen Veränderungen aufgezeigt werden. Hier wurden im Vergleich zu einer gesunden Kontrollkohorte in beiden Strukturen signifikant niedrigere MT-Werte bei sCJK-Patienten gefunden. Eine Regressionsanalyse gegen die DW-MRT, dem etablierten diagnostischen Kriterium, ergab eine signifikante positive Korrelation von MT und mittlerer Diffusivität (MD), die auf einen Zusammenhang von erhöhten Diffusionsbarrieren und erhöhtem Wassergehalt schließen lässt. Diese Korrelation könnte auf mikrozystische Veränderungen im Neuropil zurückzuführen sein. Eine inverse Korrelation im Pulvinar sowohl in der erkrankten als auch in der gesunden Kohorte deutet dagegen auf inhärent strukturelle Barrieren hin, die die Diffusion dominierend einschränken. Die MT-Sättigung hat somit das Potential, als diagnostisches Kriterium bei der sCJK eingesetzt zu werden. Der Informationsgewinn kann hierdurch gesteigert werden, indem verschiedene quantitative MR-Techniken miteinander kombiniert werden.
|
46 |
The Mt. Marcella volcanics : middle Triassic convergent margin volcanism in Southeast QueenslandBuck, Adrian January 2008 (has links)
Triassic igneous rocks in southeast Queensland show a number of subduction related geochemical characteristics. Extensive calc-alkalic granitoids chains characterise the region and define the ancient arc setting. Despite good evidence that an arc was present, Triassic volcanic rocks are relatively sparse in southeast Queensland. The Mt Marcella Volcanics, of the northern Esk Trough are a previously poorly understood piece of the Middle Triassic convergent margin of southeast Queensland. A three stage model is proposed for the eruptive development of the Middle Triassic (245- 230Ma) volcanic succession that involves; 1) The Middle Triassic basalt, comprising coalesced lava flows covering as much as 500km2 with an estimated eruptive volume in the order of 50km3. 2) The Penwhaupell Volcanic Centre, a concentration of inter-bedded lavas and pyroclastic rocks dominated by dacite that forms a volcanic pile exceeding 2km stratigraphic thickness and representing an eruptive volume of approximately 48km3. 3) The Ettiewyn Caldera, representing the catastrophic culmination of the Mt Marcella Volcanics event, with a sequence of caldera out-flow and in-fill andesite ignimbrites and post-caldera lavas with a total eruptive volume in the order of 130km3. The “Penwhaupell Volcanic Centre” and the “Ettiewyn Caldera” are two new sub-divisions and the proposed names, for the lower and upper sequences of the previously undifferentiated Mt Marcella Volcanics. The Mt Marcella Volcanics magma compositions show cogenetic characteristics that define three evolutionary pathways; 1) a mildly alkali series, from basaltic-andesite to trachy-dacite related through fractionation dominated by plagioclase and clinopyroxene 2) an amphibole series, basaltic-andesite to hornblende dacite through fractionation dominated by plagioclase and hornblende under hydrous conditions, and 3) a pyroxene series, from basaltic-andesite to pyroxene andesite through fractionation dominated by plagioclase and pyroxene. Quantitative petrogenetic models generally support the proposed fractional crystallisation pathway, however weaknesses are acknowledged, with good results for the major elements and REE off-set by generally poor results for the LILE. Despite the inconclusive trace element results for the modelled fractionation, strong geochemical similarities and cogenetic relationships have been established. A typical arc-like geochemical signature including a pronounced Nb depletion characterises the Mt Marcella Volcanics. However, the geochemical character within the Middle Triassic volcanic succession reveals an unusual transition from an OIB character of the Middle Triassic basalts, to the Andean arc character of later Mt Marcella Volcanics. The implications of this could have profound impact on our understanding of how southeast Queensland’s Triassic tectonic setting operated by providing support for hotspot activity rather than subduction-driven activity.
|
47 |
The Gambier limestone and its foraminiferal fauna / by Charles AbeleAbele, Karlis, 1937- January 1961 (has links)
276 leaves : plates, maps / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Geology, 1961
|
48 |
Factors controlling phytoplankton seasonal succession in Mt. Bold Reservior, South Australia / by Roderick L. OliverOliver, Roderick Lewis January 1981 (has links)
Typescript (photocopy) / xiii, 207 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Botany, 1982
|
49 |
Evolutionary Genetics of Barramundi (Lates Calcarifer)in the Australian Regioncmarshall@tobob.com, Carina Rynn Ecremen Marshall January 2005 (has links)
Barramundi (Lates calcarifer) is a centropomid teleost with a wide distribution across the
Indo Pacific. In Australia, barramundi are native to the tropical zone from Exmouth Gulf
in Western Australia, across the northern part of the continent, to the Mary River in
Queensland. Barramundi are protandrous hermaphrodites, and are euryhaline, with a
catadromous life history. Barramundi are a valuable Australian resource, with important
commercial and recreational fisheries and aquaculture production to the value of $11
million dollars per year. Recent declines in the availability of the fish in some rivers has led
to an interest in the possibility of restocking rivers with barramundi from other areas.
Determining the genetic structure of barramundi populations in Australia is important for
understanding biogeographic history, and appropriate management practices for both
aquaculture and recreational and commercial fishing. Previous studies have concentrated
on the east coast of Australia, and have largely ignored the western populations. In this
study, I obtained DNA data from barramundi populations across the Australian range of
the species, as well as populations from Papua New Guinea and Indonesia. The aims of
this study were to use the genetic data to determine: 1. if populations in Western Australia
show genetic differences between geographic regions 2. if these populations show an
ancestral split from populations in the east of Australia and 3. the ancestral origins of
Australian barramundi.
Previous studies of DNA data from barramundi have discovered an east/west split
occurring at the Torres Strait that was assumed to be caused by the closing of the strait
during lowered sea levels. However, these studies suffered from a bias in sampling area,
concentrating either on the eastern half of the range of barramundi, or on the western tip
of the range. Data from these studies were combined and reanalyzed. Two major clades
were discovered, with considerable biogeographic structuring, but their geographic
locations did not coincide with the reported vicariance event at the Torres Strait. Instead,
historical divisions among freshwater drainage systems appeared to have driven the
evolutionary history of barramundi in Australia.
In order to investigate these historical divisions further, a 290 bp section of the
mitochondrial DNA control region was sequenced in 284 barramundi from seven
populations across the Australian geographic range of the species and from one population
in Papua New Guinea and one population in Indonesia. Analyses of molecular variance
within and among populations showed significant geographic structuring, based on
biogeographical provinces and drainage divisions. Nested clade analyses indicated that
these geographical associations were the result of restricted gene flow, range expansion,
and past fragmentation events. I hypothesise that the Ord River area in the west of the
continent was the ancestral source population for the rest of the species range across
Australia, with Indonesia being the most likely origin of this source. Populations of
barramundi from the Pilbara region are genetically distinct and geographically isolated, with
strong evidence of an ancestral divide along geographical barriers to dispersal. There is a
strong association between Papua New Guinea and Australia, although further investigations using the cytochrome b region of mitochondrial DNA indicated a more
ancestral divide between the two than is currently evident, which could reflect an ancient
geographical divide between the two, or could be evidence of a secondary migration route
to Australia.
For a more detailed study of evolutionary processes acting on populations of barramundi in
Western Australia, allelic diversity was examined at five microsatellite loci. All loci were
polymorphic and genotypic frequencies conformed to Hardy-Weinberg expectations, with
no significant linkage between loci evident in any population. Measures of within
population diversity were significantly related to latitude, suggesting southerly migration
from a northern source population. The Ord River was the most genetically diverse
population, and the most likely ancestral migration source to the area, with diversity
decreasing down the west coast. Although there were significant differences among
populations, the nuclear microsatellite data do not indicate the same degree of genetic
structuring as is evident in the mitochondrial data. This may be a consequence of rapid
evolutionary change at microsatellite loci, with past separations or population differences
masked by recombination and back mutation of the microsatellite alleles. However, the
nature of nuclear and mitochondrial inheritance may also indicate life history differences
between the sexes, where significant genetic contribution to gene flow by males and limited
female gene flow may lead to preservation of maternally inherited population substructure.
The principal findings from this study are:
There is no genetic evidence for an east/west division of barramundi populations
in Australia, as suggested by previous research.
Despite barramundis catadromous life history, and ability to disperse through
marine waters, the present genetic structure indicates a division principally among
river drainages. From a population genetic viewpoint, the species can be regarded
as freshwater, rather than marine.
The most likely origin of barramundi in Australia is the Ord River region, with
Indonesia as the route of migration.
Differences in the population structure demonstrated by nuclear and mitochondrial
data indicate possible life history differences between the sexes.
Barramundi populations in different biogeographical provinces may have been
substantially isolated over a long period of time, and may therefore represent
independently evolving populations. This has important implications for fishery
management and translocation issues for restocking rivers.
|
50 |
The department of Christian education in the theological seminary a type of study of the Lutheran theological seminary at Philadelphia, PennsylvaniaNolde, O. Frederick January 1929 (has links)
Thesis (Ph. D.)--University of Pennsylvania, 1929. / Bibliography: p. [153]-167.
|
Page generated in 0.0155 seconds