666 research outputs found
An appraisal of scientific names used in the 1915 list of lichens of the Maltese Islands by Stefano Sommier and Alfredo Caruana Gatto
In 1915 Stefano Sommier and Alfredo Caruano Gatto published a list of lichens from the Maltese islands. Since then no other lists of local lichens have been published. This work reviews the lichen names appearing in the original checklist and, where relevant, alternative names are suggested based on contemporary usage.peer-reviewe
The information efficiency of the South African corporate bond market in relation to earnings announcements
Thesis (M.M. (Finance & Investment)--University of the Witwatersrand, Faculty of Commerce, Law and Management, Wits Business School, 2016Corporate bonds issued by the four major commercial banks in South Africa, which account for
61% of the market, and their respective earning announcements in the period 1 January 2013 to
31 December 2014 were used to analyse the reaction of daily corporate bond prices to the
earnings announcements of South African companies. The reaction of the daily corporate bond
prices to earnings announcements was empirically analysed using cross sectional regressions.
We concluded that on average the South African corporate bond market incorporates any new
information from earnings announcements. We also investigated if the asymmetrical payoff
structure of corporate bonds causes daily prices to be more sensitive to bad earnings
announcements than good earnings announcements. Our investigation found that daily corporate
bond prices are insensitive to both bad and good earnings announcements. Lastly, we analysed if
the lack of infrastructure and liquidity in the corporate bond market hinders corporate bonds in
incorporating information relative to the stock market, which has better infrastructure and
liquidity. We observed that both corporate bonds and stocks on average incorporate new
information from earnings announcements, irrespective of illiquidity and the absence of adequate
infrastructure in the South African corporate bond market,DM201
A revised appraisal of scientific names used in the 1915 list of lichens of the Maltese Islands by S. Sommier and A. Caruana Gatto
In 1915, Stefano Sommier and Alfredo Caruano Gatto published a list of lichens from the Maltese Islands. This author published an appraisal of the scientific names used in their list in 2002. The present work aims to replace the previous work given the important changes which have occurred in lichen nomenclature.peer-reviewe
Stumpage Appraisal Using Tender Price in Pahang, Peninsular Malaysia
Previous studies have shown that tropical forests are under valued. This may
result in unsustainable harvest, biased against conservation and low revenue to the
government. A study was conducted m the state of Pahang, Peninsula Malaysia to
determine the trend and patterns of tender prices based on 277 logging transactions
between the period 1993 to 1998. An analysis was also conducted to compare the
actual tender price offered by the concessionaires with the estimated tender price
using residual value technique for three logging compartments. Data on tender
prices were collected from the Pahang State Forestry Department sales record. For
the comparative analysis of tender price between actual and estimated price, data
were obtained from state-own logging enterprises. These include data on timber
volume, log price, logging and actual tender price. The result indicate that the
average tender price offered by the concessionaires is RM6,271.44 per hectare, and
the highest average tender price IS RM14,236.51 per hectare. The highest average
tender prices (RM10,558.76 per hectare) is in the District of Lipis, followed by
District of Jerantut (RM8,996.21). In general, the tender price has shown
fluctuating trends during the study period, mainly due to economic situation and
demand supply situation of log. The result from comparative analysis indicates that
the concessionaires are relatively over-estimate the stumpage value, ranging from
6.4 to 20.14 percent. The study suggests that tendering would indicate full market
value of a logging compartment when it is used for timber production. The
estimated tender price using the residual value technique can be used to set the floor
price. Further research is needed to obtain a comprehensive tendering mechanism
before Implementing any police reform on forest revenue system in the state
The Morphology and Ultrastructure of Baboon Muscle Spindles, Including Fusimotor Innervation
The work of this study was concerned with looking at baboon muscle spindles both morphologically and ultrastructurally to see if these were not in fact a closer working model for the human than cat spindles, as there is evidence both histological (Cooper and Daniel 1963, Swash and Fox 1972) and electrophysiological (Hagbarth 1981, Vallbo 1981) that there are differences between human and cat muscle spindles. Seven baboon lumbrical muscles were examined with the light microscope and the general morphology of muscle spindles determined. Twenty-seven of these were studied in more detail, particular emphasis being paid to the elastic fibre distribution within the spindles. Three spindles were also studied ultrastructurally, two of these having been used in earlier electrophysiological experiments. The results show that in terms of intrafusal fibre content and size, baboon muscle spindles are similar to those found in humans and cats. The elastic fibre distribution however, which is a useful means of identifying the static bag2 fibre in the cat, is not a reliable method in baboon spindles and in this respect is more like that found in human spindles. The M-line distribution in baboon spindles is similar to that found in other mammals and is a useful means of identifying the static bag2 fibre. The motor endings in baboon spindles are similar to those found in the cat but there may be a species variation in the nuclear chain fibre endings
Proceedings of the 1994 Monterey Workshop, Increasing the Practical Impact of Formal Methods for Computer-Aided Software Development: Evolution Control for Large Software Systems Techniques for Integrating Software Development Environments
Office of Naval Research, Advanced Research Projects Agency, Air Force Office of Scientific Research, Army Research Office, Naval Postgraduate School, National Science Foundatio
Rinodina gennarii Bagl., a new record of lichenized fungi for Antarctica
In a project aiming to determine the lichen biodiversity of James Ross Island which is located in the NE Antarctic Peninsula, 3 specimens growing on basaltic rocks were identified as Rinodina gennarii, a cosmopolite bipolar species which was never reported from Antarctica. This species is characteristic by having Dirinaria-type ascospores lacking a distinct torus and swelling around the septa in KOH. Detailed morphological and anatomical properties of this species along with photographs based on the Antarctic specimens are provided here. Our study and newly reported R. gennarii suggest that the lichen biodiversity of Antarctica is far from being fully known and detailed floristic and taxonomical revision studies should be carried to determine it
Cognitive Strategies for Coping with Stress in a Simulated Golf Task
This study examined the effectiveness of approach and avoidance
strategies for coping with stress experienced during sports performance. Twenty
two undergraduate female students whose ages ranged from 20 to 40 years
participated in this experiment They were randomly assigned to four
experimental groups to perform two different tasks (approach and avoidance
tasks), With two coping strategies (approach and avoidance strategies) and two
control groups The approach task was to putt fifteen golf balls on a man-made
putting mat along a straight path, up an incline slope to reach a target hole. The avoidance task was to putt fifteen golf balls into an easy target while music and
noise was played to distract subjects from the task. Subjects were then trained in
either approach (mental rehearsal) or avoidance (attentional focus) strategies. The
relationship between approach and avoidance coping strategies, the nature of the
task, the appraisal of perceived demand and perceived capability, and their
performance were examined
Stuffed MO layer as a diffusion barrier in metallizations for high temperature electronics
Auger electron spectroscopy was employed to characterize the diffusion barrier properties of molybdenum in the CrSi2/Mo/Au metallization system. The barrier action of Mo was demonstrated to persist even after 2000 hours annealing time at 300 C in a nitrogen ambient. At 340 C annealing temperature, however, rapid interdiffusion was observed to have occurred between the various metal layers after only 261 hours. The presence of controlled amounts of oxygen in the Mo layer is believed to be responsible for suppressing the short circuit interdiffusion between the thin film layers. Above 340 C, its is believed that the increase in the oxygen mobility led to deterioration of its stuffing action, resulting in the rapid interdiffusion of the thin film layers along grain boundaries
Microwave-Assisted Synthesis of Layered Double Hydroxides and Their Nanocomposites
A senes of hydrotalcite (HT) compounds of the type {Mg1_.rAl,(OH)2}[CO3]1.x12 mH2O
had been synthesised using conventional co-precipitation method with Rd15 = Mg/ Al=1 to 10
m order to establish the relationship between composition and the basic properties it was
found that pure HT compounds were obtained in the range of Rd15 =2 to 4. The materials
were also synthesised by microwave-assisted method using a home cooking microwave oven
at various ageing tunes, from 0 5 to 10.0 minutes.The discharged ratio of Rd15 = 3, 4, and 6
were chosen in this study. The resulting synthetic materials afford well-crystallised
hydrotalcite even at a very short microwave exposure tune of about 60 minutes as compared
With the conventional method that took about 18hrs. However, the conventional method gave
good crystallimty. On the other hand, the microwave-assisted method gave better pore size
distribution as compared to the conventional method. Better crystallImty was observed as the
exposure time mcreased for all Rd15 Structural charactensations were done by powder X-ray
diffraction (PXRD). The gram sizes and crystal stram of the materials using PXRD were
calculated.
Modification of hydrotalcite had also been done by replacing its among With
anthraqumone-2,6-disulfanate ions (AQ26), which were present in the mterlayer of brucitelike
([Mg1-,AI.,(OH)2]") and [Zn1-.,Alx(OH)2]")..
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