scholarly journals Molecular methods for selection of the ideal oocyte

2007 ◽  
Vol 15 (3) ◽  
pp. 346-353 ◽  
Author(s):  
P Patrizio ◽  
E Fragouli ◽  
V Bianchi ◽  
A Borini ◽  
D Wells
Author(s):  
K.-H. Herrmann ◽  
D. Krahl ◽  
H.-P Rust

The high detection quantum efficiency (DQE) is the main requirement for an imagerecording system used in electron microscopy of radiation-sensitive specimens. An electronic TV system of the type shown in Fig. 1 fulfills these conditions and can be used for either analog or digital image storage and processing [1], Several sources of noise may reduce the DQE, and therefore a careful selection of various elements is imperative.The noise of target and of video amplifier can be neglected when the converter stages produce sufficient target electrons per incident primary electron. The required gain depends on the type of the tube and also on the type of the signal processing chosen. For EBS tubes, for example, it exceeds 10. The ideal case, in which all impinging electrons create uniform charge peaks at the target, is not obtainable for several reasons, and these will be discussed as they relate to a system with a scintillator, fiber-optic and photo-cathode combination as the first stage.


2021 ◽  
Vol 13 (15) ◽  
pp. 8247
Author(s):  
Dimitrios N. Vlachostergios ◽  
Christos Noulas ◽  
Anastasia Kargiotidou ◽  
Dimitrios Baxevanos ◽  
Evangelia Tigka ◽  
...  

Lentil is a versatile and profitable pulse crop with high nutritional food and feed values. The objectives of the study were to determine suitable locations for high yield and quality in terms of production and/or breeding, and to identify promising genotypes. For this reason, five lentil genotypes were evaluated in a multi-location network consisting of ten diverse sites for two consecutive growing seasons, for seed yield (SY), other agronomic traits, crude protein (CP), cooking time (CT) and crude protein yield (CPY). A significant diversification and specialization of the locations was identified with regards to SY, CP, CT and CPY. Different locations showed optimal values for each trait. Locations E4 and E3, followed by E10, were “ideal” for SY; locations E1, E3 and E7 were ideal for high CP; and the “ideal” locations for CT were E3 and E5, followed by E2. Therefore, the scope of the cultivation determined the optimum locations for lentil cultivation. The GGE-biplot analysis revealed different discriminating abilities and representativeness among the locations for the identification of the most productive and stable genotypes. Location E3 (Orestiada, Region of Thrace) was recognized as being optimal for lentil breeding, as it was the “ideal” or close to “ideal” for the selection of superior genotypes for SY, CP, CT and CPY. Adaptable genotypes (cv. Dimitra, Samos) showed a high SY along with excellent values for CP, CT and CPY, and are suggested either for cultivation in many regions or to be exploited in breeding programs.


Focaal ◽  
2010 ◽  
Vol 2010 (57) ◽  
pp. 79-94 ◽  
Author(s):  
Janet McLaughlin

This article analyzes the ideology and practice of multi-unit competition that pervades neoliberal subjectivities and produces the “ideal” flexible worker within contemporary global capitalism. It demonstrates how state and capitalist interests converge to influence the selection of the ideal transnational migrant worker, how prospective migrants adapt to these expectations, and the consequences of such enactments, particularly for migrants, but also for the societies in which they live and work. Multiple levels of actors—employers, state bureaucrats, and migrants themselves—collude in producing the flexible, subaltern citizen, which includes constructions and relations of class, race, gender, and nationality/citizenship. The case study focuses on Mexican and Jamaican participants in Canada's Seasonal Agricultural Workers Program, a managed migration program that legally employs circular migrant farmworkers from Mexico and several English-speaking Caribbean countries in Canadian agriculture.


The selection of hospital sites is one of the most important choice a decision maker has to take so as to resist the pandemic. The decision may considerably affect the outbreak transmission in terms of efficiency , budget, etc. The main targeted objective of this study is to find the ideal location where to set up a hospital in the willaya of Oran Alg. For this reason, we have used a geographic information system coupled to the multi-criteria analysis method AHP in order to evaluate diverse criteria of physiological positioning , environmental and economical. Another objective of this study is to evaluate the advanced techniques of the automatic learning . the method of the random forest (RF) for the patterning of the hospital site selection in the willaya of Oran. The result of our study may be useful to decision makers to know the suitability of the sites as it provides a high level of confidence and consequently accelerate the power to control the COVID19 pandemic.


2020 ◽  
Vol 1 (2) ◽  
pp. 142
Author(s):  
Dasarius Gulo

In the process of selecting Indonesian Workers (TKI) based on quality at PT. Adila Prezkifarindo Duta is classified as still manual, where there is not yet a system for selecting quality migrant workers so it requires a long time for its assessment and the selection process is less effective. To support decision making in the selection of qualified Indonesian Workers (TKI) to make it easier by using a decision support system. One method used in the selection of qualified Indonesian Workers is the Profile Matching method. The profile matching method is a decision-making mechanism by assuming that there is an ideal level of predictor variables that must be met by applicants, rather than the minimum level that must be met or passed. In the profile matching process a process will be compared between individual competencies into standard competencies so that different competencies can be identified (also called Gap). The smaller the gap produced, the greater the weight value. In matching this profile, the selected TKI candidates are Indonesian Workers who are closest to the ideal profile of a qualified TKI.


2020 ◽  
Vol 40 (2) ◽  
pp. 213-217
Author(s):  
Rolando Perdomo-Morales ◽  
Vivian Montero-Alejo ◽  
Leandro Rodríguez-Viera ◽  
Erick Perera

Abstract Functional studies on humoral or cellular responses in the hemolymph of crustaceans require the selection of suitable anticoagulant- and hemocyte-maintaining solutions. We studied the suitability of several anticoagulant- and hemocyte-maintaining solutions in the spiny lobster Panulirus argus (Latreille, 1804), with emphasis in the preservation of hemocyte number and viability. It was found that the modified Alsever solution was the ideal anticoagulant, while modified L-15 medium and Panulirus argus saline (PAS) were the best hemocyte-maintaining solutions. It is striking that whereas avoiding plasma clotting is relatively simple to achieve, avoiding lysis and aggregation of hemocytes could be challenging and variable among closely related crustaceans. The reasons are hardly known and might indicate different composition or sensitivity of both membrane-bound and soluble mediators in any of the three types of hemocytes identified among decapod crustaceans. Hemolymph volume average in P. argus was 10.5% of fresh body weight (more than 50 ml per adult individual), which makes this species an attractive model for functional studies of hemolymph components in crustaceans.


2013 ◽  
Vol 441 ◽  
pp. 44-47
Author(s):  
Xiao Lei Qian ◽  
Yi Liu ◽  
Rui Guo ◽  
Yuan Qing Zhang ◽  
Guo Qiang Wang

For large-radius bending metal sheets with severe springback, an automatic compensation program based on APDL language was developed to achieve the ideal die geometry. To raise compensation efficiency, the range of the ideal compensation factor based on one-step springback analysis was deduced, and tests prove that more iterations will be needed if compensation factor was beyond the range, and proper selection of compensation factor among the range can be conducive to high compensation efficiency.


2020 ◽  
Author(s):  
Letizia Spampinato ◽  
Giuseppe Puglisi

<p>Indeed, nowadays data sharing via internet is one of the most used approaches to networking scientific communities. However, the opportunity to physically access Research Infrastructures (RIs) and their installations and facilities is potentially the most powerful mean to build up a community. Physically access, in fact, makes the ideal conditions for the RI’s providers and users to work side by side on specific research topics. This is recently the case of the European trans-national access activities promoted in order to allow and push the volcanology community to use either the volcano observatories, to carry out experiments or fieldworks, or laboratories, for exploiting analytical and computational facilities, belonging to the main European volcano research institutions.</p><p>The EUROVOLC project has granted the access to 11 RIs for an overall of 45 installations, including single facilities of pools of mobile instrumentation and of laboratories, and remote access to collections of volcanic rocks, of 5 European countries (France, Iceland, Italy, Portugal, and Spain). In the frame of the project, the trans-national access offer has come from 7 partners (IMO, UI, INGV&CNR, CIVISA, IPGP, and CSIC) acting in 7 WPs (13, 14, 16, 16, 17, 18, and 19).</p><p>The EUROVOLC work-plan has foreseen two calls, one in 2018 and the other in 2019, allowing users to apply for access the RIs, and the effective physical access in 2019 and 2020, respectively. Each call has been managed according to a stepwise process based on an excellence-driven criterion, in which the roles of the various actors and the schedule have been previously defined.</p><p>This contribution aims at presenting the management and coordination efforts related to the trans-national access activities in the frame of EUROVOLC including the preparation and the launch of the 1<sup>st</sup> call, the process of the selection of the proposals, the feedback from the management of the 1<sup>st</sup> call, the preparation of the 2<sup>nd</sup> call, and a critical analysis for improving the management of the 2<sup>nd</sup> call.</p>


2004 ◽  
Vol 31 ◽  
pp. 441-445
Author(s):  
Wolfgang Bender

I want to concentrate on three broad themes in responding to the papers by Arlt and Collins. The first one is about archives and collecting and what I call the dilemmas of discography. Connected to these dilemmas is the question of the place of popular music within academia and the implications thereof for the distribution of funds. The second one is more concerned with concepts and ideas. And the third one relates to the position of Christianity in the African cultures and history we study and with its position in our academic field. Starting with the first theme, I want to direct our attention to the UTC record collection. For the study of popular African music the UTC series of over 700 shellac discs is of immense importance with regard to discography and content.For anyone who has done any detailed analysis of discographic research in African music, the existence of one complete set, as it might be the case with the UTC recordings, is the ideal. Such a complete set would be a resource without precedent. In the case of most record companies or series, we do not know how many records were edited and published. Lists or catalogs rarely exist and, if they do, they may cover only a particular period. Far too often we are left to speculate. If, for example, we come across a record that carries the number 104, does it mean, this is the 104th record, or is it number 4 of a series labeled with three digits? Is record number 104 the last out of these four records, or will hundreds follow? There is no obvious rationality in numbering records. A series may begin with 101 and end with 104, but it may continue with another label color and a letter added such as B101. Sometimes a complete set—or only a selection of titles—is taken over by another company and this may be recognizable by a certain letter preceding the numbers, for instance, the letter “J” for Jeronimides, the Greek owners of the NGOMA label in Léopoldville.


2005 ◽  
Vol 6 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Chang-Won Lee ◽  
David L. Suarez

AbstractAlthough vaccination does not always prevent infection of avian influenza (AI) virus, the clear benefit of vaccination is in its ability to prevent disease and to reduce the amount of virus in circulation. Thus, judicious use of vaccination can be an important component of an AI control program. However, the long-term use of vaccination without eradication may result in the selection of the antigenically divergent strains, which compromises the value of vaccination. In this review, the effectiveness of currently available and future AI vaccines is discussed with suggestions for the ideal use of vaccination even with antigenic drift of the virus.


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