Granite petrogenesis and crustal evolution studies in the Damara Pan-African orogenic belt, Namibia

Major and trace element data for Damara granitoids distinguish three geochemically distinct granitoid groups, - crustal-melt granitoids, calc-alkaline granitoids and within-plate granitoids. The overwhelming majority of the Oamara granitoids are peraluminous crustal-melt leucogranites which have elevated 87Sr/86Sr ratios (> 0.710) and old model Nd ages (~ 2.0 Ga). Calc-alkaline diorites are metaluminous and have the lowest 87Sr/86Sr ratios (0.704 - 0.707) and model Nd ages (OM) in the range 1.1 -1.7 Ga. Within-plate granitoids are characterised by elevated high-field strength (HFS) abundances and have model Nd ages (OM) in the range 1.1 - 1.6 Ga. All Damara granitoids have model Nd ages (OM) older than about 1.0 Ga suggesting that intracrustal reworking was the dominant process and crustal growth was negligible. Damara granitoids define a hyperbola on an ∈ Sr vs. ∈ Nd diagram but cannot be modelled as simple binary mixtures between old continental crust and depleted mantle end-members. An episodic intracrustal remobilisation model is proposed to explain the hyperbola defined by granitoid data on an ∈ Sr vs. ∈ Nd diagram. Within the 10 km thick Damara metasedimentary pile 87Sr/86Sr ratios increase systematically with depth. This trend is accompanied by a decrease in 143Nd/144Nd ratios. Model Nd ages (CHUR) for the stratigraphically oldest Damara metasediments (Nosib Group) are about 2.0 Ga whereas the younger metasediments (Kuiseb Formation and Nama Group) have model Nd ages (CHUR) about 1.0 Ga reflecting sediment input from younger source terrains. The ratio of model ages (TNdCHUR/TSrBE) is used as an index of intracrustal reworking since it provides a measure of Rb/Sr fractionation (increases) relative to SmlNd fractionation. The older Damara metasediments (Nosib Group) have the highest model age ratios suggesting that their source terrains have suffered the largest amount of intracrustal reworking. However, the rate of intracrustal reworking was greatest in source terrains sampled by the younger Damara metasediments (Kuiseb Formation and Nama Group). This suggests that the rate of intracrustal reworking increased through time in the interval (2.0 - 1.0 Ga) in this segment of continental crust

The psychological-type profile of lay church leaders in Australia

A sample of 845 lay church leaders (444 women and 401 men) from a range of 24 different denominations and movements (including house churches and independent churches) completed the Francis Psychological-Type Scales within the context of the 2006 Australian National Church Life Survey. The psychological-type profiles of these lay church leaders were almost identical to the type profiles of 1527 Australian churchgoers (936 women and 591 men) published in an earlier study by Robbins and Francis. The predominant types among female lay church leaders were ISFJ (21%), ESFJ (21%), and ISTJ (18%). The predominant types among male lay church leaders were ISTJ (28%), ISFJ (17%), ESTJ (13%), and ESFJ (12%). The SJ temperament accounted for 67% of the female lay church leaders and for 70% of the male lay church leaders. The strengths and weaknesses of the SJ leadership style are discussed

Not fitting in and getting out : psychological type and congregational satisfaction among Anglican churchgoers in England

Listening to the motivations reported by individuals for ceasing church attendance and becoming church leavers, Francis and Richter identified high on the list the sense of "not fitting in". Drawing on psychological type theory, several recent studies have documented the way in which some psychological types are over-represented in church congregations and other psychological types are under-represented. Bringing these two observations together, the present study tested the hypothesis that church congregations have created type-alike communities within which individuals displaying the opposite type preferences are more likely to feel marginalised and to display lower levels of satisfaction with the congregations they attend. Data were provided by 1867 churchgoers who completed a measure of psychological type, together with measures of frequency of attendance and congregational satisfaction. These data confirmed that congregations were weighted towards preferences for introversion, sensing, feeling and judging, and that individuals displaying the opposite preferences (especially intuition, thinking and perceiving) recorded lower levels of congregational satisfaction. The implications of these findings are discussed for promoting congregational retention by enhancing awareness of psychological type preferences among those who attend

The Case for UHF RFID application in the meat supply chain in the Irish context: a review perspective

As a result of recent food scares increasing pressure has been placed on food producing industries to incorporate a farm-to-fork traceability system. Conventional methods of traceability while reasonably successful are not without their disadvantages. These include potential damage and limited data capacity in the case of bar codes, unacceptable delays incurred through the use of DNA sampling and finally inapplicability of on biometric technologies due to permanent detachment post mortem. The aims of this paper is to outline the legislative requirements for traceability, technological aspects of current traceability systems, and the case for the widespread adoption of RFID in the farm-to-fork traceability of meat, all based on the Irish system. The arguments would be valid to any country or geographic region, with the existing differences taken into account. RFID technologies offer, among others, solutions to most important challenges to barcode technology, amenity to automation, possibility of value-added products, possibility for condition monitoring during storage and transport, potential to in house traceability under adverse processing environments, seamless integration with global supply chain, item-level traceability, and all these in near real-time

Congregational bonding social capital and psychological type : an empirical enquiry among Australian churchgoers

This study explores the variation in levels of bonding social capital experienced by individual churchgoers, drawing on data generated by the Australian National Church Life Survey, and employing a five-item measure of church-related bonding social capital. Data provided by 2065 Australian churchgoers are used to test the thesis that individual differences in bonding social capital are related to a psychological model of psychological types (employing the Jungian distinctions). The data demonstrated that higher levels of bonding social capital were found among extraverts (compared with introverts), among intuitive types (compared with sensing types) and among feeling types (compared with thinking types), but no significant differences were found between judging types and perceiving types

Off-target and tumor-specific accumulation of monocytes, macrophages and myeloid-derived suppressor cells after systemic injection

Solid tumors frequently coexist with a degree of local chronic inflammation. Recruited myeloid cells can therefore be considered as interesting vehicles for tumor-targeted delivery of therapeutic agents. Using in vivo imaging, the short-term accumulation of systemically injected monocytes, macrophages and myeloid-derived suppressor cells (MDSCs) was compared in mice bearing fat pad mammary carcinomas. Monocytes and macrophages demonstrated almost identical in vivo and ex vivo distribution patterns with maximal tumor-associated accumulation seen 48 hours after injection that remained stable over the 4-day follow-up period. However, a substantial accumulation of both cell types was also seen in the liver, spleen and lungs albeit decreasing over time in all three locations. The MDSCs exhibited a similar distribution pattern as the monocytes and macrophages, but demonstrated a better relative on-target fraction over time. Overall, our findings highlight off-target cell accumulation as a major obstacle in the use of myeloid cells as vehicles for therapeutic tumor-targeted agents and indicate that their short-term on-target accumulation is mainly of nonspecific nature

Landsat TM ve IRS Uydu Görüntülerinin Arazi Kullanımı ve Bitki Örtüsü Değişimlerini Belirleme Çalışmalarında Kullanımlarının Karşılaştırılması

DergiPark: 245880trakyafbdBu çalışmanın ana hedefi Landsat TM ve IRS görüntülerinin arazi sınıflaması sonuçlarının benzerlik gösterip göstermediği araştırmaktır. Kontrollü sınıflama yapmak için dijital hava fotoğrafları, çalışmada yer alan araştırmacıların önceki çalışmaları ve varolan arazi kulanım ve bitki örtüsü haritalarından faydalanılmıştır. Araştırma sonucunda, “ormanlık alanlarda”, “açık su alanlarında”, “meyve bahçelerinde” ve “palmetto ağaç” sınıflarında, her iki uydu görüntüsü (Landsat TM IRS) arasında benzerlikler olduğu gözlenmiştir. Buna karşın “açık alanlarda”, “sebze ve otlak alanlarda” ve “bataklıklarda” oldukça farklılıklar gözlenmiştir. Genel toplam doğruluk analiz sonuçlarına göre Landsat TM %86.3 ve IRS %88.4 doğrulukta kategorileri sınıflamıştır. Buna karşın golf alanı kategorilerindeki sınıflamada problem olduğu gözlenmiştir. Zamana bağlı çözünürlükte Landsat TM ve IRS görüntülerinin arasındaki 6 haftalık bir zaman diliminin bazı sorunların oluşmasına ve kategoriler arasında sınıflama hataların meydana gelmesine neden olduğu düşünülmüştür. Araştırmaya göre Landsat TM ve IRS görüntülerinin arazi kulanım ve bitki örtüsü değişim çalışmalarında birlikte kullanılmasının mümkün olduğu tespit edilmiştir.The objective of this research focuses on comparing Landsat TM and IRS data and determining if similar classification can be achieved from datasets for certain land cover types. Supervised classification was performed using information from a combination of digital aerial photographs, a priori knowledge of the study site by the authors and existing Land Use Land Cover (LULC) maps. The “upland forest,” “open water,” “tree crops” and “palmetto prairie” categories show strong agreement in terms of percentage of LULC found in both Landsat TM+ and IRS classified images. Conversely, the “open land,” “cropland and pastureland” and “wetlands” categories display differences based on the land cover area. Based on the overall classification accuracies similar results were produced for both TM and IRS data of 86.3% and 88.4% respectively. On the other hand, certain LULC categories did not perform so well, such as the golf course. Temporal resolution between the TM and IRS images was six weeks, and this was considered a factor in the confusion between LULC category discrimination. This study showed that using Landsat TM and IRS in same study provide promising results for LULC studies

Permittivity of Meat Fish and their Components at UHF RFID Frequencies and Industry Relevant Temperatures

Permittivity values of lean beef, pork, fish, poultry, and values for other components from these sources (i.e. fat, marrow and bone) were measured at selected                                                                                                                                                                                                                              industry-relevant temperatures – 18 oC, - 12  oC, - 5 oC, 0 oC, 7 oC, 25 oC, 40 oC and UHF RFID relevant frequencies of 868 MHz, 915 MHZ, 950 MHz and 2450 MHz. Muscle fibre orientation in relation to probe placement was also investigated. Increases in temperature generally led to increases in the dielectric constant (e’) and loss factor (e’’) of all test samples while the opposite trend was observed with increases in frequency (i.e. e’ and e’’ decreased). These trends were clearly evident for samples of lean beef, pork, poultry and fish. The dielectric properties of other non-lean components also varied with temperature and frequency. e’ and e’’ values of fat and marrow were significantly lower than those of lean while for fibrous tissues muscle fibre orientation only had a significant influence in the case of poultry (p≤0.05) and not in the case of beef or pork (p≥0.05). Results of this study can serve as basic data for the design and/or application of RFID inlays

EPG-representations with small grid-size

In an EPG-representation of a graph $G$ each vertex is represented by a path in the rectangular grid, and $(v,w)$ is an edge in $G$ if and only if the paths representing $v$ an $w$ share a grid-edge. Requiring paths representing edges to be x-monotone or, even stronger, both x- and y-monotone gives rise to three natural variants of EPG-representations, one where edges have no monotonicity requirements and two with the aforementioned monotonicity requirements. The focus of this paper is understanding how small a grid can be achieved for such EPG-representations with respect to various graph parameters. We show that there are $m$-edge graphs that require a grid of area $\Omega(m)$ in any variant of EPG-representations. Similarly there are pathwidth-$k$ graphs that require height $\Omega(k)$ and area $\Omega(kn)$ in any variant of EPG-representations. We prove a matching upper bound of $O(kn)$ area for all pathwidth-$k$ graphs in the strongest model, the one where edges are required to be both x- and y-monotone. Thus in this strongest model, the result implies, for example, $O(n)$, $O(n \log n)$ and $O(n^{3/2})$ area bounds for bounded pathwidth graphs, bounded treewidth graphs and all classes of graphs that exclude a fixed minor, respectively. For the model with no restrictions on the monotonicity of the edges, stronger results can be achieved for some graph classes, for example an $O(n)$ area bound for bounded treewidth graphs and $O(n \log^2 n)$ bound for graphs of bounded genus.Comment: Appears in the Proceedings of the 25th International Symposium on Graph Drawing and Network Visualization (GD 2017

The role of ice particle shapes and size distributions in the single scattering properties of cirrus clouds

The roles of ice particle size distributions (SDs) and particle shapes in cirrus cloud solar radiative transfer are investigated by analyzing SDs obtained from optical array probe measurements (particle sizes larger than 20–40 μm) during intensive field observations of the International Cirrus Experiment, the European Cloud and Radiation Experiment, the First ISCCP Regional Experiment, and the Central Equatorial Pacific Experiment. It is found that the cloud volume extinction coefficient is more strongly correlated with the total number density than with the effective particle size. Distribution-averaged mean single scattering properties are calculated for hexagonal columns, hexagonal plates, and polycrystals at a nonabsorbing (0.5 μm), moderately absorbing (1.6 μm), and strongly absorbing (3.0 μm) wavelength. At 0.5 μm (1.6 μm) (3.0 μm), the spread in the resulting mean asymmetry parameters due to different SDs is smaller than (comparable to) (smaller than) the difference caused by applying different particle shapes to these distributions. From a broadband solar radiative transfer point of view it appears more important to use the correct particle shapes than to average over the correct size distributions