On correct expression of variance of double progressive mean statistic for monitoring Poisson observations

2021 ◽  
Author(s):  
Zameer Abbas ◽  
Hafiz Zafar Nazir ◽  
Muhammad Riaz
Keyword(s):  
Correct Expression

Regulation of retinoic acid signaling during lung morphogenesis

Development ◽  
2000 ◽  
Vol 127 (14) ◽  
pp. 3057-3067 ◽  
Author(s):  
S. Malpel ◽  
C. Mendelsohn ◽  
W.V. Cardoso
Keyword(s):  
Retinoic Acid ◽  
Lung Development ◽  
Branching Morphogenesis ◽  
Initial Stage ◽  
Signaling Center ◽  
Distal Lung ◽  
Immature Lung ◽  
Airway Branching ◽  
Correct Expression

Little is known about how retinoic acid (RA) synthesis, utilization and metabolism are regulated in the embryonic lung and how these activities relate to lung pattern formation. Here we report that early lung bud formation and subsequent branching morphogenesis are characterized by distinct stages of RA signaling. At the onset of lung development RA signaling is ubiquitously activated in primary buds, as shown by expression of the major RA-synthesizing enzyme, RALDH-2 and activation of a RARE-lacZ transgene. Nevertheless, further airway branching appears to require downregulation of RA pathways by decreased synthesis, increased RA degradation in the epithelium via P450RAI-mediated metabolism, and inhibition of RA signaling in the mesenchyme by COUPTF-II expression. These mechanisms controlling local RA signaling may be critical for normal branching, since we show that manipulating RA levels in vitro to maintain RA signaling activated as in the initial stage, leads to an immature lung phenotype characterized by failure to form typical distal buds. We show that this phenotype likely results from RA interfering with the establishment of a distal signaling center, altering levels and distribution of Fgf10 and Bmp4, genes that are essential for distal lung formation. Furthermore, RA upregulates P450RAI expression, suggesting the presence of feedback mechanisms controlling RA availability. Our study illustrates the importance of regional mechanisms that control RA availability and utilization for correct expression of pattern regulators and normal morphogenesis during lung development.

The Second Law Efficiency of Solar Energy Conversion

1984 ◽  
Vol 106 (1) ◽  
pp. 16-21 ◽  
Author(s):  
J. A. Gribik ◽  
J. F. Osterle
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Blackbody Radiation ◽  
Second Law ◽  
Atmospheric Scattering ◽  
Maximum Conversion ◽  
Maximum Conversion Efficiency ◽  
Maximum Work ◽  
Dissipation Equation ◽  
Correct Expression

The controversy over the proper expression for the theoretical maximum conversion efficiency of solar devices is resolved. The correct expression, ηmax = 1 −4/3 (To/Ts), relates to the maximum work that can be done by a device which accepts blackbody radiation at Ts and rejects heat to the ambient at To. A general bilinear dissipation equation for solar devices is derived. The effect of back-radiation is considered, and the efficiency decrease due to atmospheric scattering is determined.

scholarly journals Correction: G. Papari et al. Terahertz Spectroscopy of Amorphous WSe2 and MoSe2 Thin Films. Materials 2018, 11, 1613

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 1017
Author(s):  
Gian Paolo Papari ◽  
Can Koral ◽  
Toby Hallam ◽  
Georg Stefan Duesberg ◽  
Antonello Andreone
Keyword(s):  
Thin Films ◽  
Terahertz Spectroscopy ◽  
Transmission Function ◽  
Exponential Factor ◽  
Correct Expression

The exponential factor in Equation (1) of the paper published in Materials [1] reports a misprint and the correct expression of the transmission function is (1) T ˜ ( ω ) = E ˜ f ( ω ) E ˜ s ( ω ) = 2 n ˜ f ( n ˜ a + n ˜ s ) ( n ˜ f + n ˜ a ) ( n ˜ f + n ˜ s ) e x p { −   i   ( n ˜ f − n ˜ a ) ω t c } F P ( ω ) where F P ( ω ) = 1 1 − ( n ˜ f − n ˜ a n ˜ f + n ˜ a ) ( n ˜ f − n ˜ s n ˜ f + n ˜ s ) e x p { − i   2   n ˜ f ω t c } [...]

scholarly journals Correct Expression of spec2a in the Sea Urchin Embryo Requires Both Otx and Other cis-Regulatory Elements

2001 ◽  
Vol 232 (2) ◽  
pp. 424-438 ◽  
Author(s):  
Chiou-Hwa Yuh ◽  
Xiaotao Li ◽  
Eric H Davidson ◽  
William H Klein
Keyword(s):  
Sea Urchin ◽  
Regulatory Elements ◽  
Sea Urchin Embryo ◽  
Correct Expression

A Correction to the Governor Model Moment of Inertia

1973 ◽  
Vol 51 (16) ◽  
pp. 1794-1795 ◽  
Author(s):  
V. R. Prakash
Keyword(s):  
First Principles ◽  
Closed Shell ◽  
Moment Of Inertia ◽  
Model Calculations ◽  
Significant Correction ◽  
The Moment ◽  
Rotationally Invariant ◽  
Correct Expression

It is shown that the expression for the moment of inertia used in the governor model calculations is incorrect. A correct expression for the moment of inertia is derived from first principles and is found to differ from the earlier, approximately by a factor of 1/2. This introduces a significant correction in the calculation of the number of nucleons outside the rotationally invariant core and the possible closed shell configuration given by Trainor and Gupta.

scholarly journals Erratum to “Spacelike hypersurfaces of constant higher order mean curvature in generalized Robertson–Walker spacetimes”. Math. Proc. Camb. Phil. Soc. (2012), 152, 365–383.

2013 ◽  
Vol 155 (2) ◽  
pp. 375-377
Author(s):  
LUIS J. ALÍAS ◽  
DEBORA IMPERA ◽  
MARCO RIGOLI
Keyword(s):  
Mean Curvature ◽  
Higher Order ◽  
Spacelike Hypersurfaces ◽  
Higher Order Mean Curvature ◽  
Formula Group ◽  
Image Position ◽  
Correct Expression

The proof of Corollary 4⋅3 in our paper [1] is not correct because there is a mistake in the expression given for ∥X* ∧ Y*∥2 on page 374. In fact, the correct expression for this term is \begin{eqnarray*} \norm{X^*\wedge Y^*}^2 & = & \norm{X^*}^2\norm{Y^*}^2-\pair{X^*,Y^*}^2\\ {} & = & 1+\pair{X,T}^2+\pair{Y,T}^2\geq 1, \end{eqnarray*} and then the inequality (4⋅9) is no longer true. Observe that all the previous reasoning before the wrong expression for ∥X* ∧ Y*∥2 is correct.

scholarly journals The Nuclear Actin-related Protein of Saccharomyces cerevisiae, Act3p/Arp4, Interacts with Core Histones

1999 ◽  
Vol 10 (8) ◽  
pp. 2595-2605 ◽  
Author(s):  
Masahiko Harata ◽  
Yukako Oma ◽  
Shigeki Mizuno ◽  
Yi Wei Jiang ◽  
David J. Stillman ◽  
...  
Keyword(s):  
Nuclear Actin ◽  
Histone H2a ◽  
Related Protein ◽  
The Core ◽  
Core Histones ◽  
Episomal Dna ◽  
Two Hybrid ◽  
Far Western Blot ◽  
Correct Expression

Act3p/Arp4, an essential actin-related protein ofSaccharomyces cerevisiae located within the nucleus, is, according to genetic data, involved in transcriptional regulation. In addition to the basal core structure of the actin family members, which is responsible for ATPase activity, Act3p possesses two insertions, insertions I and II, the latter of which is predicted to form a loop-like structure protruding from beyond the surface of the molecule. Because Act3p is a constituent of chromatin but itself does not bind to DNA, we hypothesized that insertion II might be responsible for an Act3p-specific function through its interaction with some other chromatin protein. Far Western blot and two-hybrid analyses revealed the ability of insertion II to bind to each of the core histones, although with somewhat different affinities. Together with our finding of coimmunoprecipitation of Act3p with histone H2A, this suggests the in vivo existence of a protein complex required for correct expression of particular genes. We also show that a conditionalact3 mutation affects chromatin structure of an episomal DNA molecule, indicating that the putative Act3p complex may be involved in the establishment, remodeling, or maintenance of chromatin structures.

scholarly journals Individual cells traffic the Vasopressin 2 Receptor to their cell surface with different success

2021 ◽  
Author(s):  
Eline J Koers ◽  
Bradley A Morgan ◽  
Iain B Styles ◽  
Dmitry J Veprintsev
Keyword(s):  
Cell Surface ◽  
Receptor Cell ◽  
Surface Expression ◽  
G Protein Coupled Receptors ◽  
Cell Surface Expression ◽  
Subcellular Localisation ◽  
Equal Distribution ◽  
Mutant Receptors ◽  
G Protein Coupled ◽  
Correct Expression

G protein coupled receptors (GPCRs) translate the actions of hormones and neurotransmitters into intracellular signalling events. Mutations in GPCRs can prevent their correct expression and trafficking to the cell surface and cause disease. Single cell subcellular localisation measurements reveal that while some cells appear to traffic the majority of the vasopressin 2 receptor (V2R) molecules to the cell surface, others retain a greater number of receptors in the ER or have approximately equal distribution. Mutations in the V2R affect the proportion of cells able to send this GPCR to their cell surface but surprisingly they do not prevent all cells from correctly trafficking the mutant receptors. These findings reveal the potential for rescue of mutant receptor cell surface expression by pharmacological manipulation of the GPCR folding and trafficking machinery.

scholarly journals LANGUAGE CLICHÉS IN THE METHODOLOGY OF TEACHING RUSSIAN AS A FOREIGN LANGUAGE

2021 ◽  
Vol 10 (34) ◽  
Author(s):  
S.V PETROV ◽  
Keyword(s):  
Foreign Language ◽  
Foreign Students ◽  
Foreign Languages ◽  
Linguistic Terms ◽  
Correct Expression ◽  
Practice Of Teaching

The purpose of this study is to determine the role of language clichés in the practice of teaching foreign languages and, in particular, Russian as a foreign language. In the course of the study, the relevant features of language clichés were identified, including those that distinguish them from phraseological units; the classification of language clichés by the functions of language expressions is made; and the methodology for them in relation to a foreign audience is described. In addition, it was found that the use of clichés as the most stable reproducible linguistic terms in a foreign language, helps to avoid errors associated with the wrong lexical collocation, and also contributes to a more correct expression of thoughts for a given language which in turn makes the communication more effective and responsive to the communicative tasks of its participants. In this regard, language clichés should be paid a special attention, both by researchers and teachers, in this case working with foreigners. It should be kept in mind that there might be no such fixed phrases in the language of foreign students, or they can have a different structure, which means that in many times students cannot independently recognize and purposefully memorize such units; that is why all the necessary semantic work with such language clichés should be carried out in class.

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