scholarly journals National Biodiversity Council

1998 ◽  
Vol 4 (1) ◽  
pp. 3
Author(s):  
Harry F. Recher
Keyword(s):  
Conservation Biology ◽  
Native Title ◽  
Media Attention ◽  
Level Of Activity ◽  
Regional Forest ◽  
High Level ◽  
Western Australian

The NBC continues to increase its level of activity. Since the last report in Pacific Conservation Biology, among other actions, the Council has commented on the Commonwealth Governments "Native Title" legislation the "10 Point Plan" and made submissions on the proposed changes to Commonwealth Environment Legislation. Pierre Horwitz made a submission on behalf of the Council concerning the Western Australian Regional Forest Agreement process. Each submission received a high level of media attention with national coverage on the ABC for the Council's views on native title and on proposed new biodiversity legislation.

ACCase-Inhibiting Herbicide-ResistantAvenaspp. Populations from the Western Australian Grain Belt

2012 ◽  
Vol 26 (1) ◽  
pp. 130-136 ◽  
Author(s):  
M. S. Ahmad-Hamdani ◽  
Mechelle J. Owen ◽  
Qin Yu ◽  
Stephen B. Powles
Keyword(s):  
Herbicide Resistance ◽  
Dose Response ◽  
Resistance Index ◽  
Wild Oat ◽  
Acetyl Coa Carboxylase ◽  
Acetyl Coa ◽  
Grain Crops ◽  
High Level ◽  
Western Australian

Avenaspp. are world weeds with many cases of evolved herbicide resistance. In Australia,Avenaspp. (wild oat and sterile oat) are a major problem, especially in grain crops. Acetyl-CoA carboxylase (ACCase)–inhibiting herbicides have been used extensively since the late 1970s forAvenaspp. control. However, continued reliance on these herbicides has resulted in the evolution of resistantAvenaspp. populations. Resistance across many ACCase-inhibiting herbicides was characterized in fourAvenaspp. populations from the Western Australian grain belt. Dose–response experiments were conducted to determine the level of resistance to the aryloxyphenoxypropionates and cyclohexanediones and to the phenylpyrazoline herbicide pinoxaden. On the basis of resistance index values, all four resistant populations exhibited high-level diclofop resistance but varied in the level of resistance to other ACCase-inhibiting herbicides tested. It is evident thatAvenaspp. populations from the Western Australian grain belt have evolved resistance to a number of ACCase-inhibiting herbicides.

scholarly journals Spo0A-Dependent Activation of an Extended −10 Region Promoter in Bacillus subtilis

2006 ◽  
Vol 188 (4) ◽  
pp. 1411-1418 ◽  
Author(s):  
Guangnan Chen ◽  
Amrita Kumar ◽  
Travis H. Wyman ◽  
Charles P. Moran
Keyword(s):  
Bacillus Subtilis ◽  
Base Pair ◽  
Promoter Activity ◽  
Mutational Analysis ◽  
Dna Binding Protein ◽  
Base Pairs ◽  
Dnase I Footprinting ◽  
Level Of Activity ◽  
High Level ◽  
Activity Dependent

ABSTRACT At the onset of endospore formation in Bacillus subtilis the DNA-binding protein Spo0A directly activates transcription from promoters of about 40 genes. One of these promoters, Pskf, controls expression of an operon encoding a killing factor that acts on sibling cells. AbrB-mediated repression of Pskf provides one level of security ensuring that this promoter is not activated prematurely. However, Spo0A also appears to activate the promoter directly, since Spo0A is required for Pskf activity in a ΔabrB strain. Here we investigate the mechanism of Pskf activation. DNase I footprinting was used to determine the locations at which Spo0A bound to the promoter, and mutations in these sites were found to significantly reduce promoter activity. The sequence near the −10 region of the promoter was found to be similar to those of extended −10 region promoters, which contain a TRTGn motif. Mutational analysis showed that this extended −10 region, as well as other base pairs in the −10 region, is required for Spo0A-dependent activation of the promoter. We found that a substitution of the consensus base pair for the nonconsensus base pair at position −9 of Pskf produced a promoter that was active constitutively in both ΔabrB and Δspo0A ΔabrB strains. Therefore, the base pair at position −9 of Pskf makes its activity dependent on Spo0A binding, and the extended −10 region motif of the promoter contributes to its high level of activity.

scholarly journals A new assay for nitric oxide reductase reveals two conserved glutamate residues form the entrance to a proton-conducting channel in the bacterial enzyme

2006 ◽  
Vol 401 (1) ◽  
pp. 111-119 ◽  
Author(s):  
Faye H. Thorndycroft ◽  
Gareth Butland ◽  
David J. Richardson ◽  
Nicholas J. Watmough
Keyword(s):  
Nitric Oxide ◽  
Paracoccus Denitrificans ◽  
Nitric Oxide Reductase ◽  
Transmembrane Helices ◽  
Level Of Activity ◽  
Bacterial Enzyme ◽  
Cytoplasmic Membranes ◽  
Membrane Bound ◽  
Proton Movement ◽  
High Level

A specific amperometric assay was developed for the membrane-bound NOR [NO (nitric oxide) reductase] from the model denitrifying bacterium Paracoccus denitrificans using its natural electron donor, pseudoazurin, as a co-substrate. The method allows the rapid and specific assay of NO reduction catalysed by recombinant NOR expressed in the cytoplasmic membranes of Escherichia coli. The effect on enzyme activity of substituting alanine, aspartate or glutamine for two highly conserved glutamate residues, which lie in a periplasmic facing loop between transmembrane helices III and IV in the catalytic subunit of NOR, was determined using this method. Three of the substitutions (E122A, E125A and E125D) lead to an almost complete loss of NOR activity. Some activity is retained when either Glu122 or Glu125 is substituted with a glutamine residue, but only replacement of Glu122 with an aspartate residue retains a high level of activity. These results are interpreted in terms of these residues forming the mouth of a channel that conducts substrate protons to the active site of NOR during turnover. This channel is also likely to be that responsible in the coupling of proton movement to electron transfer during the oxidation of fully reduced NOR with oxygen [U. Flock, N. J. Watmough and P. Ädelroth (2005) Biochemistry 44, 10711–10719].

scholarly journals The Impact of CEOs' Compensations on Cost Stickiness in Industrial Companies Listed on the Amman Stock Exchange

2021 ◽  
Vol 15 (1) ◽  
pp. 152
Author(s):  
Lina Fuad Hussien
Keyword(s):  
Stock Exchange ◽  
Industrial Companies ◽  
Level Of Activity ◽  
Cost Behavior ◽  
Study Population ◽  
The Difference ◽  
High Level ◽  
The Cost ◽  
The Impact ◽  
Cost Stickiness

The purpose of this study is to analyze the asymmetry in cost behavior (cost stickiness) and to identify the impact of CEOs' compensation on the degree of cost stickiness behavior. The study population consists of the public shareholding companies listed on the ASE, which number (56) industrial company. Data were collected from (35) industrial companies for the period (2009 - 2019). To measure the degree of costs stickiness, The Model of Weiss (2010) was used. The Model of Weiss (2010) takes into account the costs and changes in the level of activity (sales) for the last four quarters of the company, Weiss (2010) model constructs the difference in logarithmic ratios of changes in cost. The study found that the CEO's compensation in Jordanian industrial companies consists of two forms. The companies pay fixed salaries or performance-related bonuses. The study found that the form of compensation that is paid to the CEO affects the behavior of managers. The results indicated that the performance-related rewards are accompanied by a decrease in the level of cost stickiness, and the compensation paid in the form of fixed salaries are accompanied by a high level of cost stickiness. The study recommends that companies should understand the role of the compensation form in administrative decisions, especially with regard to resource modifications, as management motives in relation to resource modifications must be taken into account because of their clear and direct impact on the cost structure of companies.

scholarly journals The Relationship Between the Demonstration Method and Active Participation in 3 in 1 Junior Operator Custome Made Women Training

2021 ◽  
Vol 9 (3) ◽  
pp. 398
Author(s):  
Arindha Sukma ◽  
Jamaris Jamna
Keyword(s):  
Sampling Technique ◽  
Simple Random Sampling ◽  
Learning Activities ◽  
Industrial Training ◽  
Level Of Activity ◽  
Analysis Technique ◽  
Correlational Approach ◽  
Good Learning ◽  
Data Collection Technique ◽  
High Level

This research was motivated by the high level of activity of the training participants in participating in the 3 in 1 Junior Operator Custome Made Women's training at the Padang Industrial Training Center, presumably because the instructor used the demonstration method in learning well. This research is quantitative with a correlational approach. The population in this study were all participants of the 3 in 1 Junior Operator Custome Made Women's Training at BDI Padang, totaling 45 people. While the sample was taken using the Simple Random Sampling technique, as many as 88% (40 people) because 12% of the population was used as a test instrument. The data collection technique used a questionnaire distributed via the google form link https://bit.ly/AngketPenelitianArindhaSukma. The data analysis technique used is the percentage formula and the product moment formula. The results of this study indicate that the training participants already have good learning activities, and there is a significant relationship between the demonstration method and the training participants' learning activities.

scholarly journals Planets and Stellar Activity: Hide and Seek in the CoRoT-7 system

2013 ◽  
Vol 8 (S299) ◽  
pp. 237-240
Author(s):  
R. D. Haywood ◽  
A. C. Cameron ◽  
D. Queloz ◽  
S. C. C. Barros ◽  
M. Deleuil ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Markov Chain ◽  
Precise Determination ◽  
Photometric Data ◽  
Stellar Activity ◽  
Level Of Activity ◽  
Reliable Detection ◽  
Harmonic Decomposition ◽  
High Level

AbstractSince the discovery of the transiting Super-Earth CoRoT-7b, several investigations have been made of the number and precise masses of planets present in the system, but they all yield different results, owing to the star's high level of activity. Radial velocity (RV) variations induced by stellar activity therefore need to be modelled and removed to allow a reliable detection of all planets in the system. We re-observed CoRoT-7 in January 2012 with both HARPS and the CoRoT satellite, so that we now have the benefit of simultaneous RV and photometric data. We fitted the off-transit variations in the CoRoT lightcurve using a harmonic decomposition similar to that implemented in Queloz et al. (2009). This fit was then used to model the stellar RV contribution, according to the methods described by Aigrain et al. (2011). This model was incorporated into a Monte Carlo Markov Chain in order to make a precise determination of the orbits of CoRoT-7b and CoRoT-7c. We also assess the evidence for the presence of one or two additional planetary companions.

Does environmental disclosure have an auditing effect?

2019 ◽  
Vol 35 (1) ◽  
pp. 43-66
Author(s):  
Sheng Yao ◽  
Lingling Pan ◽  
Zhipeng Zhang
Keyword(s):  
Internal Control ◽  
Audit Fees ◽  
Environmental Information ◽  
Environmental Disclosure ◽  
Audit Risk ◽  
Content Type ◽  
Media Attention ◽  
Environmental Disclosures ◽  
Audit Opinions ◽  
High Level

Purpose The purpose of this paper is to investigate whether firms with high environmental disclosure have a low possibility of non-standard audit opinions and audit fees and whether this trend is more obvious after than prior to the Measures for the Disclosure of Environmental Information (Measure) implemented in 2008. Design/methodology/approach Based on the Measures implemented in 2008, the authors select data for the listed manufacturing firms from 2004 to 2006 (Pre-Measure) and from 2009 to 2011 (Post-Measure) as research samples to investigate the relationships between environmental disclosures, audit opinions and audit fees with difference in difference models. In addition, we also consider the influence of media attention, the polluting industry and internal control on the audit effect of environmental disclosure. Findings The results show that the level of environmental disclosure is significantly negatively correlated with the possibility of issuing non-standard audit opinions and audit fees after measure is implemented, especially hard environmental information. Further evidence indicates that the auditing effect of environmental disclosures is stronger on firms that receive less media attention, in firms with better internal controls, and in firms belonging to industries with heavy pollution. Originality/value In the Chinese setting, a high level of environmental information disclosures can effectively reduce the audit risk and lead to a high possibility of standard audit opinions and low audit fees. This effect is pronounced after issuing Measure. The conclusions suggest that measure and increasing environmental disclosure have an obvious positive audit effect and that firms should be forced or encouraged to disclose more environmental information from the perspective of auditors in China.

Sensory processing in a thermal afferent pathway

1985 ◽  
Vol 53 (2) ◽  
pp. 429-434 ◽  
Author(s):  
S. N. Davies ◽  
G. E. Goldsmith ◽  
R. F. Hellon ◽  
D. Mitchell
Keyword(s):  
Sensory Processing ◽  
Receptive Fields ◽  
Second Order ◽  
Dynamic Responses ◽  
Trigeminal Nucleus ◽  
Afferent Pathway ◽  
Afferent Fibers ◽  
Level Of Activity ◽  
Caudal Trigeminal Nucleus ◽  
High Level

Extracellular recordings were made from cold-receptive afferent fibers in the trigeminal ganglion of rats anesthetized with halothane. By applying a standardized series of steady or changing temperatures to the receptive fields, we recorded the static and dynamic responses of the afferents. Comparable recordings were made from neurons in the marginal layer of the caudal trigeminal nucleus onto which the cold fibers synapse. The static and dynamic responses of the afferent fibers were reproduced faithfully by the second-order neurons, but at a much higher level of activity. Ganglionectomy silenced the second-order cells. Their continuous high level of activity appears to depend on the tonic input from the afferent fibers and not on any intrinsic circuits in the medulla.

1999 EXPLORATION REVIEW

2000 ◽  
Vol 40 (2) ◽  
pp. 70
Author(s):  
W.F. Muir
Keyword(s):  
Success Rate ◽  
State Governments ◽  
Offshore Drilling ◽  
Native Title ◽  
The Past ◽  
Exploration Drilling ◽  
High Level

Over the years, many issues have confronted the industry, and affected its approach to business. A brief analysis of seismic and exploration drilling levels over the past four decades demonstrates how marked these effects have been. During 1999, fewer wells have been drilled onshore in Australia than for any year since 1979. This is due in large part to the refusal of some State Governments to award newly gazetted acreage due to native title concerns. The solution required is a legislative one. Offshore drilling, however, is at a historically high level, and during 1999, had a success rate of one in five. Successes in both the onshore and offshore were restricted to currently producing basins.

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