COMPARISONS OF THE ABUNDANCE OF THE SPECIES COMPOSING THE FOLIAGE INHABITING FAUNA OF APPLE TREES

1972 ◽  
Vol 104 (5) ◽  
pp. 731-749 ◽  
Author(s):  
F. T. Lord
Keyword(s):  
Stem Length ◽  
Economic Damage ◽  
Apple Trees ◽  
Arthropod Species ◽  
Large Numbers ◽  
Quantitative Rating ◽  
Number Of Leaves ◽  
The Common ◽  
The Mean ◽  
The Many

AbstractA 5 year study of the foliage inhabiting fauna of young apple trees which had never been treated with insecticides or miticides showed there were large numbers of species varying considerably in quantity. The study also showed that the manner in which the foliage is distributed by cluster type and the distribution of the many species on the clusters are important factors in the sampling of mixed populations of arthropods.The leaf clusters were classified into six types based on stem length and on the presence or absence of fruit. The mean number of leaves per cluster for all types combined increased until mid July but no further increase occurred after that. The variation in leaves per cluster on the longer clusters, however, continued throughout the summer even though the mean number of leaves per cluster did not.The relative abundance of each of the arthropod species, whether it was identifiable to name or not, was given a quantitative rating by using random clusters as a common sampling unit. Eleven orders, 38 families, and over 100 species were recorded. The species making up the fauna were nearly all at a low density and in general remained low during the study. All the common pests were found but only four were at a level where economic damage to the foliage resulted. Very few of the species were present in numbers sufficiently large for analysis of the factors influencing their population density or theirA list is given of those species which were sufficiently abundant to show that differences in preference for some cluster types over others is common.

scholarly journals Growth and Development of Abelmuschus esculentus (Okra) in Gully Eroded Soil Amended with Different Rates of Cow Dung Manure

2021 ◽  
pp. 84-93
Author(s):  
Ekwealor U. Kenneth ◽  
Okereke E. Kingsley ◽  
Iroka F. Chisom ◽  
Okereke N. Chukwu ◽  
Francis H. Ibadin
Keyword(s):  
Growth And Development ◽  
Phosphorus Content ◽  
Soil Analysis ◽  
Control Sample ◽  
Mean Value ◽  
Stem Length ◽  
Cow Dung ◽  
Significant Difference ◽  
Number Of Leaves ◽  
The Mean

The growth and development of Abelmuschus esculentus (okra) in gully eroded soil amended with different rates of cow dung manure was studied using the complete randomized design; morphormetric data such as leaf area, plant height, stem girth, numbers of nodes, number of leaves and percentage flowering was collected and analyzed. A 30 kg of gully eroded soil sample was put into a sac in triplicate and six treatments of cow dung was introduced into it (0.5 kg, 1.0 kg, 1.5 kg, 2.0 kg, 2.5 kg and 3.0 kg) respectively. The results of study showed that there is a significant difference in all the treatments compared to control.  Highest petiole length (31.63±1.84) of Okra plant was obtained at week seven with 2.0 kg amended soil. The 2.5 kg treatment of manure at week 7 had the highest leave length with the mean of 30.36±2.47 while the least leave length occurred in the 2.5 kg treatment at week 1 with the mean value of 0.49±0.03. The 2.0 kg treatment of manure at week 7 had the highest leave length with the mean of 36.96±1.15 while the least leave length occurred in the 2.5 kg treatment at week 1 with the mean value of 0.44±0.03. The 1.0 kg treatment of manure at week 7 had the highest length of internode (23.16±3.55) while the least length of internode occurred in the control at week 2 (0.86±0.23). At week 1 for all treatments, no result was obtained for length of internodes. The 0.5 kg treatment of manure at week 7 had the highest number of leaves with the mean of 21.33±4.93 while the least number of leaves occurred in the 0.5 kg, 2.0 kg and 2.5 kg treatments respectively at week 1 and in the control sample at week 2. The result also revealed that the 1.0 kg treatment of manure at week 7 had the highest stem length (154.73±30.99) while the least stem length occurred in the 2.0 kg at week 1(0.46±0.03). The 3.0 kg treatment of manure at week 7 had the highest stem girth (9.33±0.51) while the least stem girth occurred in the 2.5 kg at week 1(0.31±0.02). The soil analysis result showed that nitrogen was highest in the soil at 2.0 kg treatment of cow dung (402±2.51) while the 1.5 kg treatment and control had the least nitrogen content (322±0.57) and (322±3.05) respectively. The highest phosphorus content was 1.0 kg treatment of cow dung (986±1.53), with the control having the lowest phosphorus content (280±2.00). On the potassium content, the 2.5 kg treatment had the highest (843±0.57) while the control had the least content of potassium (357±1.52). The overall result showed that the growth and development of okra was enhanced by application of cow dung which influenced soil nutrient status positively.

scholarly journals Seed Source Affects Seedling Development and Nitrogen Fixation of Maackia amurensis

1995 ◽  
Vol 13 (3) ◽  
pp. 142-146
Author(s):  
J. Giridhar B. Pai ◽  
William R. Graves
Keyword(s):  
Growth And Development ◽  
Dry Mass ◽  
Seedling Development ◽  
Stem Length ◽  
Plant Growth And Development ◽  
Maackia Amurensis ◽  
Seed Sources ◽  
Number Of Leaves ◽  
The Mean ◽  
Different Sources

Abstract Seeds of Maackia amurensis Rupr. & Maxim. were obtained from 38 sources, and 2,393 seedlings were examined for variation in plant growth and development. Mean stem length and number of leaves per plant after 21 months ranged from 10 to 40 cm (4 to 16 in) and from 6 to 13, respectively, among seedlings from different sources. The mean product of length and width of a representative leaflet was 362 to 1510 mm2 (0.6 to 2.3 in2) among sources. A subset of seven seed sources was used to determine how seedling growth, root nodulation, and N content of shoots are influenced by applied N and inoculation with Bradyrhizobium. Plants from the seven sources varied in nodule dry mass and shoot N. Mean stem length, laminar area, and dry mass of plants provided N and grown in uninoculated medium were higher than those of plants not provided N regardless of inoculation. When N was not provided, inoculation increased N in shoots but did not affect growth. Nodule dry mass of plants in inoculated medium was correlated positively with surface area of lamina. Variation among seedlings provides a basis for selecting genotypes that produce high nodule mass and grow rapidly.

Ratio imaging of intracellular ion concentration

1992 ◽  
Vol 50 (2) ◽  
pp. 1160-1161
Author(s):  
Stephen R. Bolsover
Keyword(s):  
Individual Cell ◽  
Video Camera ◽  
Field Of View ◽  
Ion Concentration ◽  
Fluorescence Signal ◽  
Ion Imaging ◽  
Ratiometric Fluorescence ◽  
Ratio Imaging ◽  
The Mean ◽  
The Many

The field of intracellular ion concentration measurement expanded greatly in the 1980's due primarily to the development by Roger Tsien of ratiometric fluorescence dyes. These dyes have many applications, and in particular they make possible to image ion concentrations: to produce maps of the ion concentration within living cells. Ion imagers comprise a fluorescence microscope, an imaging light detector such as a video camera, and a computer system to process the fluorescence signal and display the map of ion concentration.Ion imaging can be used for two distinct purposes. In the first, the imager looks at a field of cells, measuring the mean ion concentration in each cell of the many in the field of view. One can then, for instance, challenge the cells with an agonist and examine the response of each individual cell. Ion imagers are not necessary for this sort of experiment: one can instead use a system that measures the mean ion concentration in a just one cell at any one time. However, they are very much more convenient.

A Cooperative Species

2011 ◽  
Author(s):  
Samuel Bowles ◽  
Herbert Gintis
Keyword(s):  
Common Good ◽  
Cooperative Groups ◽  
Social Emotions ◽  
Large Numbers ◽  
Group Competition ◽  
Self Interest ◽  
Shame And Guilt ◽  
Group Members ◽  
The Common ◽  
Ethnographic Data

Why do humans, uniquely among animals, cooperate in large numbers to advance projects for the common good? Contrary to the conventional wisdom in biology and economics, this generous and civic-minded behavior is widespread and cannot be explained simply by far-sighted self-interest or a desire to help close genealogical kin. This book shows that the central issue is not why selfish people act generously, but instead how genetic and cultural evolution has produced a species in which substantial numbers make sacrifices to uphold ethical norms and to help even total strangers. The book describes how, for thousands of generations, cooperation with fellow group members has been essential to survival. Groups that created institutions to protect the civic-minded from exploitation by the selfish flourished and prevailed in conflicts with less cooperative groups. Key to this process was the evolution of social emotions such as shame and guilt, and our capacity to internalize social norms so that acting ethically became a personal goal rather than simply a prudent way to avoid punishment. Using experimental, archaeological, genetic, and ethnographic data to calibrate models of the coevolution of genes and culture as well as prehistoric warfare and other forms of group competition, the book provides a compelling and novel account of human cooperation.

Comparison of Heffner Criteria and Light Criteria in Differentiating Exudative and Transudative Pleural Effusion

2020 ◽  
Vol 22 (3) ◽  
pp. 141-145
Author(s):  
Krishna Chandra Devkota ◽  
S Hamal ◽  
PP Panta
Keyword(s):  
Pleural Effusion ◽  
Cross Sectional Study ◽  
Pleural Space ◽  
Sectional Study ◽  
Inclusion Criteria ◽  
Cross Sectional ◽  
Medical College ◽  
The Common ◽  
The Mean ◽  
Exudative Pleural Effusion

Pleural effusion is present when there is >15ml of fluid is accumulated in the pleural space. It can be divided into two types; exudative and transudative pleural effusion. Tuberculosis and parapneumonic effusion are the common cause of exudative pleural effusion whereas heart failure accounts for most of the cases of transudative pleural effusion. This study was a hospital based cross sectional study performed at Nepal Medical College during the period of January 2016-December 2016. A total of 50 patients who fulfilled the inclusion criteria were enrolled. Pleural effusion was confirmed by clinical examination and radiology. After confirmation of pleural effusion, pleural fluid was aspirated and was analysed for protein, LDH, cholesterol. The Heffner criteria was compared with Light criteria to classify exudative or transudative pleural effusion. Among 50 patients, 30 were male and 20 were female. The mean age of patient was 45.4±21.85 years. The sensitivity and specificity of using Light criteria to detect the two type of pleural effusion was 100% and 90.9%, whereas using Heffner criteria was 94.87%, 100% respectively(P<0.01). There are variety of causes for development of pleural effusion and no one criteria is definite to differentiate between exudative or transudative effusion. In this study Light criteria was more sensitive whereas Heffner criteria was more specific to classify exudative pleural effusion. Hence a combination of criteria might be useful in case where there is difficulty to identify the cause of pleural effusion.

Negotiations over Accounting Issues: The Congruency of Audit Partner and Chief Financial Officer Recalls

2005 ◽  
Vol 24 (s-1) ◽  
pp. 171-193 ◽  
Author(s):  
Michael Gibbins ◽  
Susan A. McCracken ◽  
Steven E. Salterio
Keyword(s):  
Negotiation Process ◽  
Chief Financial Officers ◽  
Chief Financial Officer ◽  
Relative Importance ◽  
Common Elements ◽  
Contextual Features ◽  
Large Numbers ◽  
The Common ◽  
High Level ◽  
Two Sides

Much of what takes place in auditor-client management negotiations occurs in unobservable settings and normally does not result in publicly available archival records. Recent research has increasingly attempted to probe issues relating to accounting negotiations in part due to recent events in the financial world. In this paper, we compare recalls from the two sides of such negotiations, audit partners, and chief financial officers (CFOs), collected in two field questionnaires. We examine the congruency of the auditors' and the CFOs' negotiation recalls for all negotiation elements and features that were common across the two questionnaires (detailed analyses of the questionnaires are reported elsewhere). The results show largely congruent recall: only limited divergences in recall of common elements and features. Specifically, we show a high level of congruency across CFOs and audit partners in the type of issues negotiated, parties involved in resolving the issue, and the elements making up the negotiation process, including agreement on the relative importance of various common accounting contextual features. The analysis of the common accounting contextual features suggests that certain contextual features are consistently important across large numbers of negotiations, whether viewed from the audit partner's or the CFO's perspective, and hence may warrant future study. Finally, the comparative analysis allows us to identify certain common elements and contextual features that may influence both audit partners and CFOs to consider the accounting negotiation setting as mainly distributive (win-lose).

Of Reformed Versifying

2018 ◽  
Author(s):  
Neil Rhodes
Keyword(s):  
Sixteenth Century ◽  
Faerie Queene ◽  
Classical Literature ◽  
Native Form ◽  
Christian Doctrine ◽  
English Verse ◽  
The Common ◽  
The Mean ◽  
The Faerie Queene ◽  
Stylistic Ideal

This chapter examines how the development of English poetry in the second half of the sixteenth century is characterized by the search for an appropriate style. In this context, ‘reformed versifying’ may be understood as a reconciliation of high and low in which the common is reconfigured as a stylistic ideal of the mean. That development can be traced in debates about prosody where an alternative sense of ‘reformed versifying’ as adapting classical metres to English verse is rejected in favour of native form. At the same time Sidney recuperates poetry by reforming it as an agent of virtue. Reformation and Renaissance finally come together in Spenser, who realizes Erasmus’ aim of harmonizing the values of classical literature with Christian doctrine, and reconciles the foreign and the ‘homewrought’. The Faerie Queene of 1590 represents the triumph of the mean in both style and, through its celebration of marriage, in substance.

RELEASE OF CHRYSOPERLA CARNEA STEPHENS (NEUROPTERA: CHRYSOPIDAE) FOR CONTROL OF THE GREEN APPLE APHID, APHIS POMI DEGEER (HOMOPTERA: APHIDIDAE)

1989 ◽  
Vol 121 (4-5) ◽  
pp. 309-314 ◽  
Author(s):  
Elmer A.C. Hagley
Keyword(s):  
Daily Temperature ◽  
Chrysoperla Carnea ◽  
Apple Trees ◽  
Aphis Pomi ◽  
The Mean

AbstractRelease of the chrysopid, Chrysoperla cornea Stephens, at a rate of ca. 335 000 eggs per hectare, reduced significantly the numbers of apterous adults and nymphs of the green apple aphid, Aphis pomi DeGeer, on dwarf apple trees. Greater reduction in aphid numbers occurred in 1984 than in 1985, and the efficiency of the predator might have been influenced by the predator:prey ratios (1:10 and 1:19) used and by the mean daily temperature that occurred during the test periods. Application of azinphosmethyl (Guthion 50% wp, 0.105 and 0.075 kg AI/100 L) did not adversely affect predation of apterous A. pomi by larvae of C. carnea.

scholarly journals Relaxation Times in Strictly Disk Systems

1971 ◽  
Vol 10 ◽  
pp. 15-19
Author(s):  
George B. Rybicki
Keyword(s):  
Numerical Experiments ◽  
Relaxation Times ◽  
Galactic Structure ◽  
Large Numbers ◽  
Order Of Magnitude ◽  
Vlasov Limit ◽  
The Mean ◽  
Gravitating Systems

AbstractIt is shown that the time of relaxation by particle encounters of self-gravitating systems in the plane interacting by 1/r2 forces is of the same order of magnitude as the mean orbit time. Therefore such a system does not have a Vlasov limit for large numbers of particles, unless appeal is made to some non-zero thickness of the disk. The relevance of this result to numerical experiments on galactic structure is discussed.

scholarly journals Genetic gain in the breeding program of common beans at IAC from 1989 to 2007

2010 ◽  
Vol 10 (4) ◽  
pp. 329-336 ◽  
Author(s):  
Alisson Fernando Chiorato ◽  
Sérgio Augusto Morais Carbonell ◽  
Roland Vencovsky ◽  
Nelson da Silva Fonseca Júnior ◽  
José Baldin Pinheiro
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Genetic Gain ◽  
Grain Quality ◽  
The State ◽  
Breeding Program ◽  
Common Beans ◽  
The Common ◽  
The Mean ◽  
Second Period

The goal of the present work was to evaluate the genetic gain obtained in grain yield for the common bean genotypes from 1989 until 2007, at the Instituto Agronômico de Campinas, in the state of São Paulo. Genetic gain has been separated into two research periods; the first, from 1989 to 1996, and the second, from 1997 to 2007. In the first period, a genetic gain of 1.07 % per year was obtained, whereas for the second period, the gain was zero. However, the mean yield of the evaluated lines was approximately 1000 kg ha-1 superior to the figures obtained in the first period. The main cause for the absence of genetic gain in the second period is that the focus of the breeding program was changed to grain quality. The individualized analysis of the genotypes with carioca grains in the second period indicated the lack of genetic gain during the investigated period.

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