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2021 ◽  
Author(s):  
Xiaochun Zhao ◽  
Dongxia Feng ◽  
Jason Huang ◽  
Yilu Zhang ◽  
Ian F. Dunn

Abstract Background: The hemicraniectomy is a common technique used in a variety of pathologies including some traumatic brain injury and malignant stroke. A novel technique of performing hemicraniectomies using a retro-auricular incision can avoid transgressing the temporalis muscle and superficial temporal artery while providing adequate hemicranial exposure. Method: This technique was reproduced in a skull base lab using a cadaveric head. The key steps of this approach were illustrated in step-by-step fashion. A post-approach CT scan of the cadaver was performed to evaluate the decompression exposure. Results: This approach is able to provide sufficient middle fossa decompression and area of exposure, while preserving the temporalis along with the superficial temporal artery. Conclusions: The altered retro-auricular flap (the “Feng-Huang” flap) is a novel technique for hemicraniectomy which can provide sufficient middle fossa decompression and exposure while sparing the temporalis muscle and superficial temporal artery during the approach. A step-by-step technical illustration is demonstrated in the present note.


Author(s):  
R. Sabbagh ◽  
O. Zabeti

The main aim of the present note is to consider bounded orthomorphisms between locally solid vector lattices. We establish a version of the remarkable Zannen theorem regarding equivalence between orthomorphisms and the underlying vector lattice for the case of all bounded orthomomorphisms. Furthermore, we investigate topological and ordered structures for these classes of orthomorphisms, as well. In particular, we show that each class of bounded orthomorphisms possesses the Levi or the $AM$-properties if and only if so is the underlying locally solid vector lattice. Moreover, we establish a similar result for the Lebesgue property, as well.


Zootaxa ◽  
2021 ◽  
Vol 5072 (3) ◽  
pp. 298-300
Author(s):  
MARCELA LARESCHI ◽  
EKATERINA SAVCHENKO

Savchenko & Lareschi (2019) and Lareschi (2020) described four new species of mites in the family Laelapidae. However, the papers were published in electronic form only and were not registered in ZooBank. They do not satisfy Article 8.5.3 of the International Code of Zoological Nomenclature (ICZN 2012), so the new names are not available from those papers. Therefore, the aim of the present note is to validate the names Laelaps schatzi, Androlaelaps azarae, Androlaelaps montensis and Androlaelaps cursor. Type specimens of the four new species are deposited in the Colección de Entomología, Museo de la Plata, Argentina.  


2021 ◽  
Vol 8 (2) ◽  
pp. 148-152
Author(s):  
Subhan El Hafiz

Religiosity studies in Indonesia is an interesting topic; however, one of the biggest challenges in studying religiosity in Indonesia is the neutrality of the researcher regardless of their attitudes toward religion. This editorial note will explore the meaning of neutrality in religiosity studies. Specifically, it emphasizes the responsibility of the researchers to understand the complexity of religion by acknowledging that religion can have a positive impact and/or negative effect on believers. Furthermore, the present note describes how studies on the psychology of religion in Indonesia can contribute to the body of knowledge not only at the local level, but also at the global context.


2021 ◽  
Vol 41 (2) ◽  
pp. 303-316
Author(s):  
Rohan French

The present note investigates the connection between nonreflexive and nontransitive logics from a bounds-theoretic perspective. What will emerge is one way in which, if we focus on the ways in which strict and tolerant acts constrain one another, nonreflexive and nontransitive notions of consequence can be seen as simply reflecting different aspects of the same underlying reality.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
A. Belafhal ◽  
E.M. El Halba ◽  
T. Usman

Abstract The aim of the present note is to derive an integral transform I = ∫ 0 ∞ x s + 1 e - β x 2 + γ x M k , v ( 2 ζ x 2 ) J μ ( χ x ) d x , I = \int_0^\infty {{x^{s + 1}}{e^{ - \beta x}}^{2 + \gamma x}{M_{k,v}}} \left( {2\zeta {x^2}} \right)J\mu \left( {\chi x} \right)dx, involving the product of the Whittaker function Mk, ν and the Bessel function of the first kind Jµ of order µ. As a by-product, we also derive certain new integral transforms as particular cases for some special values of the parameters k and ν of the Whittaker function. Eventually, we show the application of the integral in the propagation of hollow higher-order circular Lorentz-cosh-Gaussian beams through an ABCD optical system (see, for details [13], [3]).


2021 ◽  
Vol 10 (9) ◽  
pp. 3233-3240
Author(s):  
F. Shujat ◽  
A.Z. Ansari ◽  
K. Kumar
Keyword(s):  

In the present note, we discuss the notion of symmetric bi-semiderivations on rings and prove some commutativity results for commuting bi-semiderivations. Moreover, we obtain the characterization of symmetric bi-semiderivation on prime ring.


Taxonomy ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 266-269
Author(s):  
Kareen E. Schnabel ◽  
Qi Kou ◽  
Peng Xu

Schnabel, Kou & Xu reported three new species of spongicolid shrimp from New Zealand. The present note, with ZooBank registrations, serve to validate the names Spongicoloides clarki, S. sonne and Spongiocaris antipodes by fulfilling Code conditions for nomenclatural availability. As such, the date and authorship of the species names take the date of publication of this note. Specimens are deposited at the National Institute of Water & Atmospheric Research, Wellington (NIWA) and the Museum of New Zealand Te Papa Tongarewa, Wellington (NMNZ).


Obiter ◽  
2021 ◽  
Vol 32 (3) ◽  
Author(s):  
Lynn Biggs ◽  
Adriaan van der Walt

The suspension of employees happens frequently in the work environment in different contexts. It has several contractual and other legal consequences. In the present note the meaning of suspension is considered and the legal consequences of suspension are explained and evaluated. In the discussions both the common-law and statutory provisions of suspension are considered. The interaction between the principles of the two systems is also highlighted. The constitutional validity of certain legal provisions of statutory regulation of suspension is also commented upon.


Author(s):  
János Nagy ◽  
András Némethi

AbstractThe present note is part of a series of articles targeting the theory of Abel maps associated with complex normal surface singularities with rational homology sphere links (Nagy and Némethi in Math Annal 375(3):1427–1487, 2019; Nagy and Némethi in Adv Math 371:20, 2020; Nagy and Némethi in Pure Appl Math Q 16(4):1123–1146, 2020). Besides the general theory, by the study of specific families we wish to show the power of this new method. Indeed, using the general theory of Abel maps applied for elliptic singularities in this note we are able to prove several key properties for elliptic singularities (e.g. the statements of the next paragraph), which by ‘old’ techniques were not reachable. If $$({\widetilde{X}},E)\rightarrow (X,o)$$ ( X ~ , E ) → ( X , o ) is the resolution of a complex normal surface singularity and $$c_1:{\mathrm{Pic}}({\widetilde{X}})\rightarrow H^2({\widetilde{X}},{\mathbb {Z}})$$ c 1 : Pic ( X ~ ) → H 2 ( X ~ , Z ) is the Chern class map, then $${\mathrm{Pic}}^{l'}({\widetilde{X}}):= c_1^{-1}(l')$$ Pic l ′ ( X ~ ) : = c 1 - 1 ( l ′ ) has a (Brill–Noether type) stratification $$W_{l', k}:= \{{\mathcal {L}}\in {\mathrm{Pic}}^{l'}({\widetilde{X}})\,:\, h^1({\mathcal {L}})=k\}$$ W l ′ , k : = { L ∈ Pic l ′ ( X ~ ) : h 1 ( L ) = k } . In this note we determine it for elliptic singularities together with the stratification according to the cycle of fixed components. E.g., we show that the closure of any $$W(l',k)$$ W ( l ′ , k ) is an affine subspace. For elliptic singularities we also characterize the End Curve Condition and Weak End Curve Condition in terms of the Abel map, we provide several characterization of them, and finally we show that they are equivalent.


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