Seasonal Feeding by Phyllophaga crinita and Anomala spp. (Coleoptera: Scarabaeidae) Larvae in Northeastern Mexico

1996 ◽  
Vol 31 (3) ◽  
pp. 301-305 ◽  
Author(s):  
L. A. Rodriguez-del-Bosque

Larval feeding by Phyllophaga crinita (Burmeister) and Anomala spp. (mixed populations of A. flavipennis Burmeister and A. foraminosa Bates) was studied under simulated field conditions in northern Tamaulipas, Mexico. Each month from July 1994 to February 1995, 50 field-collected larvae of P. crinita and Anomala spp. were placed individually in plastic pots with soil and corn seeds, and damage was evaluated 10 d after seedling emergence. Secondinstar P. crinita caused 41% root loss in July, whereas third instars caused most damage (66–88% root loss) during July–September. Feeding by P. crinita decreased gradually from October to December, and ceased in January–February. In contrast, feeding by Anomala spp. peaked in July and again in November (73 and 53% root loss, respectively), a result of the bivoltine life cycle of these species in this region. The relationship of these findings to similar studies is discussed.

Author(s):  
Ahmed Zahaf ◽  
Mimoun Malki

The alignment of ontologies is the backbone of semantic interoperability. It facilitates the import of data from an ontology to another, translating queries between them or merging ontologies in a global one. However, these services cannot be guaranteed throughout the life cycle of the ontology. The problem is that the evolution of mapped ontologies may be affected and make obsolete the relationship of the mapping. Inspired by belief revision theory, the authors identify and formalize the constraints and requirements of the alignment evolution problem. Then they give an orchestration of designed operations to resolve the problem. The satisfaction of these constraints and requirements is discussed for each operation showing its strengths and weaknesses. Finally, the authors conduct an experimental process with the objective to show the limits of alignment evolution methods and ontology matching tools when dealing with alignment evolution problem highlighting the emergency to invest in dedicated methods.


1942 ◽  
Vol 20d (6) ◽  
pp. 170-181 ◽  
Author(s):  
J. A. McLeod ◽  
G. E. Little

The life cycle of Pseudobilharziella querquedulae McLeod, 1937 has been completed experimentally and the relationship of the adult to Cercaria physella Talbot, 1936 has been definitely established. The female of the species and the eggs were recovered and are described for the first time. A report is given on the exposure of a number of species of molluscs to the miracidia of this schistosome and notes on the life cycle and adult stage of Cercaria dermolestes McLeod, 1940 are included. A case of hypersensitiveness in man to the proteins of schistosome cercariae is reported.


Author(s):  
Ole W. Pedersen

This chapter examines the relationship of environmental law to public and constitutional law. More specifically, it considers ‘points of interactions’ between public and constitutional law and environmental law and shows that these points of interaction are found throughout the ‘life cycle’ of environmental law. The chapter explores the ways in which environmental law is shaped by rules and doctrines of public and constitutional law, first by discussing policy and law-making in the administrative state. It then analyses constitutional environmental norms and their functions, the local and domestic context of constitutional environmental provisions, the non-constitutional points of interaction between environmental law and public and constitutional law, and how the form and content of environmental law are shaped by domestic structures of government (and governance). The chapter concludes with an assessment of the impact of environmental law on public and constitutional law.


2001 ◽  
Vol 32 (3) ◽  
pp. 11-16
Author(s):  
A. G. Frank

The bimodal character of stocks is demonstrated when they are classified according to their style. Stocks are often assigned, on the basis of some valuation parameter, uniquely as either value or growth even though, over time, changes in a stock’s-growth probability should trace the evolution of the corporate life cycle. This study is concerned with investigating the relationship of that probability to market cycles. Two hundred and eighty eight stocks from the ASEAN are tracked over an eight-year period. The percentages of those, on a monthly basis, that are in the top quintile of EPS growth, as well as the top quintile of major value (current) styles are calculated. Using multidimensional scaling, the study concludes that the degree of differentiation between growth and value rises as the market declines, and that styles are purer at the bottom than at the top of the market cycle.


2017 ◽  
Vol 17 (12) ◽  
pp. 7445-7458 ◽  
Author(s):  
Joseph Ching ◽  
Jerome Fast ◽  
Matthew West ◽  
Nicole Riemer

Abstract. It is commonly assumed that models are more prone to errors in predicted cloud condensation nuclei (CCN) concentrations when the aerosol populations are externally mixed. In this work we investigate this assumption by using the mixing state index (χ) proposed by Riemer and West (2013) to quantify the degree of external and internal mixing of aerosol populations. We combine this metric with particle-resolved model simulations to quantify error in CCN predictions when mixing state information is neglected, exploring a range of scenarios that cover different conditions of aerosol aging. We show that mixing state information does indeed become unimportant for more internally mixed populations, more precisely for populations with χ larger than 75 %. For more externally mixed populations (χ below 20 %) the relationship of χ and the error in CCN predictions is not unique and ranges from lower than −40 % to about 150 %, depending on the underlying aerosol population and the environmental supersaturation. We explain the reasons for this behavior with detailed process analyses.


2010 ◽  
Vol 37-38 ◽  
pp. 402-406
Author(s):  
Li Sun ◽  
Jun He Yu ◽  
Hong Fei Zhan ◽  
Yi Xu

Starting from the product life cycle, this paper established the modeling of enterprise cluster entity at the base of analyzing the various products of the enterprise cluster. The modeling comprises the process dimension, resource dimension and organization dimension. Every dimension was expressed by the analysis of product view. Then, based on the complex network theory, we obtained the distribution of the products by the product network. Finally, we got the relationship of enterprise cluster entity from the result of the product network.


2021 ◽  
Vol 47 (4) ◽  
pp. 298-308
Author(s):  
Jeffrey Brooks

Abstract The author of The Firebird and the Fox: Russian Culture under Tsars and Bolsheviks (Cambridge University Press, 2019) responds to comments of Michael David-Fox, Muireann Maguire, Kevin Platt, William Mills Todd, and Olga Velikanova. He expresses appreciation for the reflections provided and elaborates on several points raised by the commentators individually and collectively: the theoretical framing of the work and the importance of agency; continuity of culture over episodes of political disjuncture; the applicability of the term “cultural ecosystem;” an alternative treatment of the topic that would have accorded greater emphasis to political power and the life cycle of revolutions; and the relationship of the work to analysis of institutional history and cultural theory. He finds the five commentaries to be valuable companion pieces for readers of The Firebird and the Fox and stimulants to further scholarship.


Author(s):  
Dmitry Yu. Petrov ◽  
◽  

The relationship of the Industry 4.0 concept with cyber-physical systems and digital twins is described. The analysis of the capabilities of modern information systems of discrete and continuous production for the creation of digital twins of production is presented. The stages of creating a digital twin of production are proposed, taking into account the requirements of standards for the development of automated control systems for continuous technological processes. Using the use case diagram, the functionality and requirements for the subsystems of the information system are determined. The architecture of the information system for managing the life cycle of a continuous technological process was developed.


Coronaviruses ◽  
2021 ◽  
Vol 02 ◽  
Author(s):  
Loay Bedda ◽  
Fayrouz Mahmoud ◽  
Radwa Elkhateib ◽  
Alyaa Dawoud ◽  
Hassan Gamal ◽  
...  

: The emerging new COVID 2019 pandemic, which started in 2019 in China (Wuhan) and is caused by SARS-CoV-2, raises critical concerns due to high morbidity and mortality. Given a large number of infected individuals and the fact that the number continues to rise, it's possible that the virus has multiple variants, some of which are more pathogenic than others.Besides, the virus is suspected of various evolutionary pathways since SARS-CoV-2 belongs to the RNA viruses’ family, which is characterized by a high mutation rate. Additionally, it is crucial to understand the life cycle of the virus to be able to urge antiviral studies. Genotyping studies about viruses are also important in order to understand the transmission and evolution of the virus. The genome of SARS-CoV-2 has a furin-like cleavage site in its S protein that may affect its pathogenicity. It was found that insertions and deletions in S protein have an impact on the transmission and fusion of the virus. The single nucleotide polymorphisms (SNP) genotypes are used to track the relationship of virus isolates. Sequence alignment revealed the presence of hundreds of inter-host mutations during person-to-person transmission. Furthermore, genetic recombination provided a second mechanism for virus evolution. In this review, we highlight the life cycle of the virus and methods of virus evolution caused by mutations or recombination of viral genomes.


Author(s):  
Ranjitha. B ◽  
Ashalatha. P ◽  
Jagadeeswara Rao. S ◽  
Subrahmanyeswari. B

The present experiment was a study on the relationship of Body Condition Score with milk yield, fat and solids-not-fat percent in murrah graded buffaloes under field conditions. In this murrah graded buffaloes from different commercial farms of Guntur and Krishna districts were selected. Total of 150 murrah graded buffaloes of different parities (1st to 6th parities) were selected. Various parameters like BCS, related to average milk yield, fat per cent, SNF per cent was taken into consideration for the present study and a correlated study of BCS and the milk yield was studied. The selected animals were divided into four groups based on BCS as 2.5-2.99, 3.0-3.49, 3.5-3.99, 4.0-4.49. The mean BCS values of 2.5-2.99, 3.0-3.49, 3.5-3.99, 4.0-4.49 were 2.62, 3.25, 3.56 and 4.25 respectively. Highest milk yield was recorded in second month of lactation and lowest in first month of lactation with 9.445±0.15 and 6.18±0.08 kg per day, respectively. The buffaloes with BCS 4.0-4.49 yielded higher milk yield when compared to other groups. Highest fat and SNF percent was observed in the animals with BCS 4.0-4.49 when compared with others. The BCS had showed high positive correlation with SNF (0.44) and milk yield (0.41).


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