scholarly journals Design proposal of a DNA biosensor by means of relative bioimpedance measurements and genetic amplification: preliminary results

2021 ◽  
Vol 2008 (1) ◽  
pp. 012020
Author(s):  
G Ames-Lastra ◽  
I A Castillo-Salazar ◽  
A Hernández-Nava ◽  
V Sánchez ◽  
M Gómez-López ◽  
...  
Keyword(s):  
Saline Solution ◽  
Dna Biosensor ◽  
Detection Technique ◽  
Functional Test ◽  
Preliminary Results ◽  
Two Samples ◽  
Design Proposal ◽  
Genetic Amplification

Abstract In this work, we propose the instrumentation of a DNA biosensor whose detection technique is based on relative bioimpedance measurements. The scope of this work is to report the preliminary results of an initial functional test using two samples: milli-q water and saline solution.

Screening of cattle urine samples for the presence of beta-agonists with a functional test: some preliminary results

The Analyst ◽  
1994 ◽  
Vol 119 (12) ◽  
pp. 2667 ◽  
Author(s):  
Robert Schilt ◽  
Hendricus Hooijerink ◽  
Fred A. Huf ◽  
Obbe P. Zuiderveld ◽  
Aalt Bast
Keyword(s):  
Urine Samples ◽  
Functional Test ◽  
Preliminary Results ◽  
Beta Agonists

SCANNING ION MICROBEAM ANALYSIS OF DIFFUSION IN IN-MOUTH DRUG RELEASE POLYMERS

2005 ◽  
Vol 15 (03n04) ◽  
pp. 161-167 ◽  
Author(s):  
G. MASSINGHAM ◽  
R. ARSLANOGLU ◽  
F. E. GAUNTLETT ◽  
M. S. RIHAWY ◽  
R. W. SMITH ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Nuclear Reaction ◽  
Drug Delivery Systems ◽  
Saline Solution ◽  
Pure Water ◽  
X Ray ◽  
Preliminary Results ◽  
Water Infusion ◽  
Phosphate Buffered Saline

With the aim of characterizing polymer-based drug delivery systems a combination of Scanning MeV 3 He microbeam Nuclear Reaction, Backscattering and Particle Induced X-ray Emission (PIXE) techniques has been developed. This, together with gravimetric and UV techniques has been applied to characterize both water infusion and drug effusion for three in-mouth polymer–drug systems. Preliminary results are presented from the exposure of polymers, containing drug at a level of 9% by weight of the dry polymer, to both pure water and a phosphate buffered saline solution at 37°C.

scholarly journals Knowledge in international relations: Susceptibilities to motivated reasoning among experts and non-experts

2019 ◽  
Vol 7 (1) ◽  
pp. 172-191 ◽  
Author(s):  
Peter Beattie ◽  
Danielle Snider
Keyword(s):  
Foreign Policy ◽  
International Relations ◽  
Signal Detection ◽  
Motivated Reasoning ◽  
Detection Technique ◽  
Specialized Training ◽  
Political Issues ◽  
Liberal Democratic ◽  
Two Samples ◽  
The Ideal

Motivated reasoning as a pervasive feature of human psychology poses challenges to the ideal of liberal democratic government, which relies on citizens’ rationality. Motivated reasoning is at least partially caused by a biased store of knowledge, a partial set of accumulated information that skews reasoning about important political issues. However, there is some evidence that specialized training in a given domain may reduce the effects of motivated reasoning within that domain. To test whether a similar phenomenon is evident in the field of international relations, a signal detection technique is used to measure knowledge of U.S. foreign policy among two samples, one of IR professors and one of laypersons. The results uncover significant differences between experts and nonexperts, indicating that training in IR helps to reduce biases in knowledge, potentially providing “knowledge constraints” on motivated reasoning. Nonetheless, some evidence of bias among IR professors remains, suggesting that knowledge constraints on motivated reasoning may not fully allay normative concerns of bias in the domain of international relations.

scholarly journals Late Precambrian acritarchs from the Eleonore Bay Group and Tillite Group in East Greenland

1976 ◽  
Vol 78 ◽  
pp. 1-19
Author(s):  
G Vidal
Keyword(s):  
Geographic Distribution ◽  
The State ◽  
Fold Belt ◽  
East Greenland ◽  
Preliminary Results ◽  
Late Precambrian ◽  
Two Samples ◽  
Wide Geographic Distribution ◽  
Stratigraphic Range

Thirty-five samples from the late Precambrian Eleonore Bay Group and Tillite Group in the Caledonian fold belt in Bast Greenland were investigated for acid-resistant microfossils. Eleven samples yielded acritarchs. As a rule the state of preservation of the recovered acritarchs is poor, as aresult of slight metamorphism. Within the Eleonore Bay Group, identifiable acritarchs were recovered from four samples from the Limestone-Dolomite series, one sample from the Multicoloured series, one sample.from the upper Quartzite series, two samples from the lower Quartzite series and one sample from the Argillaceous-Arenaceous series. Relatively well preserved acritarchs occur in two samples from the slightly disconformably overlying Tillite Group. Some of the acritarchs recovered have a wide geographic distribution and apparently a narrow stratigraphic range in the upper Precambrian. Preliminary results indicate a Late Riphean age for the uppermost Eleonore Bay Group (Limestone-Dolomite series and Multicoloured series) and a Vendian age for at least the lower investigated parts of the Tillite Group.

scholarly journals Preliminary Results of Ship Detection Technique by Wake Pattern Recognition in SAR Images

2020 ◽  
Vol 12 (18) ◽  
pp. 2869 ◽  
Author(s):  
Maria Daniela Graziano
Keyword(s):  
Optical Sensors ◽  
Situational Awareness ◽  
Detection Technique ◽  
Sar Images ◽  
Preliminary Results ◽  
Ship Detection ◽  
International Agencies ◽  
Subsequent Step ◽  
Wake Detection ◽  
Illegal Activities

Recently, international agencies for border security ask for an improvement of the actual Maritime Situational Awareness. This manuscript presents preliminary results of a detection technique of go-fast boats, whose utilization in illegal affairs is strongly increasing. Their detection is very challenging since: (i) their echo is not visible in SAR images, and (ii) the illegal activities are carried out in the nighttime making useless the optical sensors. However, their wakes are very persistent and extent in SAR images for some kilometers. Hence, the manuscript shows an innovative deterministic methodology for the ship detection based on the wake signature. It firstly identifies pixels crossed by the wakes, whose presence is, then, validated in two steps. The first level of validation estimated how prominent the wake components are with respect to their background. The second level of validation exploits the presence of the wakes among neighbor pixels. The approach has been applied on ships imaged by TerraSAR-X mission showing the same peculiarities of go-fast boats. Results highlight the potentialities of the proposed approach, which can be also conceived as a subsequent step in a hybrid system, whose preliminary wake detection screening is carried out by different techniques.

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

Cyclic Evolution of Sunspots: Gleaning New Results from Old Data

2000 ◽  
Vol 179 ◽  
pp. 163-165
Author(s):  
S. K. Solanki ◽  
M. Fligge ◽  
P. Pulkkinen ◽  
P. Hoyng
Keyword(s):  
Sunspot Number ◽  
Sunspot Cycle ◽  
Preliminary Results ◽  
Butterfly Diagram

AbstractThe records of sunspot number, sunspot areas and sunspot locations gathered over the centuries by various observatories are reanalysed with the aim of finding as yet undiscovered connections between the different parameters of the sunspot cycle and the butterfly diagram. Preliminary results of such interrelationships are presented.

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