scholarly journals Impact on Spin Tune From Horizontal Orbital Angle Between Snakes and Orbital Angle Between Spin Rotators

2008 ◽  
Author(s):  
M. Bai ◽  
V. Ptitsyn ◽  
T. Roser
Keyword(s):  
Orbital Angle

A new shrimp species of the genus Leptomenaeus Bruce, 2007 (Crustacea: Decapoda: Pontoniinae) from Vietnam

Zootaxa ◽  
2008 ◽  
Vol 1872 (1) ◽  
pp. 45
Author(s):  
ZDENEK ĎURIŠ ◽  
IVONA HORKÁ
Keyword(s):  
New Species ◽  
Abdominal Segment ◽  
Carapace Length ◽  
Lower Surface ◽  
Single Specimen ◽  
Shrimp Species ◽  
A New Species ◽  
Orbital Angle ◽  
Antennular Peduncle

A new species of pontoniine shrimp, Leptomenaeus nhatrangensis sp. nov., is described and illustrated. This new species is the second representative of the genus. It is distinguishable from L. dolichosternum (Okuno and Mitsuhashi 2003) by the straight dorsal outline of the carapace and rostrum (1), by the rostrum overreaching the basal antennular peduncle (2), a subacute lower orbital angle (3), serrate cutting edges on the first pereiopod chela (4), fingers of the second pereiopod chela not markedly longer than palm (5), and the sixth abdominal segment not distinctly longer than postorbital carapace length (6). A single specimen of this new species was found in shallows of the Nhatrang Bay, southeastern Vietnam, on the lower surface of a large boulder.

Deep-sea spider crabs of the family Epialtidae MacLeay, 1838, from PapuaNew Guinea, with a redefinition of Tunepugettia Ng, Komai & Sato, 2017, and descriptions of two new genera (Crustacea: Decapoda: Brachyura: Majoidea)

Zootaxa ◽  
2019 ◽  
Vol 4619 (1) ◽  
pp. 1-44 ◽  
Author(s):  
BEE YAN LEE ◽  
BERTRAND RICHER DE FORGES ◽  
PETER K. L. NG
Keyword(s):  
New Species ◽  
Papua New Guinea ◽  
New Genus ◽  
New Records ◽  
New Guinea ◽  
Spider Crab ◽  
Sea Spider ◽  
The Family ◽  
One New Species ◽  
Orbital Angle

The deep-water epialtid spider crab (superfamily Majoidea) material collected from recent French expeditions to Papua New Guinea (BIOPAPUA 2010, PAPUA NIUGINI 2012, MADEEP 2014, and KAVIENG 2014) was studied. In addition to several new records for the country, five new species of Oxypleurodon Miers, 1885, Rochinia A. Milne-Edwards, 1875, and Tunepugettia Ng, Komai & Sato, 2017, are described. The taxonomy of Tunepugettia is reappraised, and a new genus, Crocydocinus n. gen., is established, characterised by its smooth ambulatory legs and a distinct male first gonopod structure. Four species from the Bay of Bengal, Sumatra, and Réunion Island, currently placed in Rochinia and Tunepugettia are transferred to Crocydocinus n. gen. and four new species from Papua New Guinea, Philippines, and Vanuatu are described. A new genus, Neophrys n. gen., with one new species from Papua New Guinea, is established, and is characterised by the supraorbital eave being fused with the carapace and the poorly developed pre-orbital angle. 

scholarly journals Can orbital angle morphology distinguish dogs from wolves?

Zoomorphology ◽  
2015 ◽  
Vol 135 (1) ◽  
pp. 149-158 ◽  
Author(s):  
Luc Janssens ◽  
Inge Spanoghe ◽  
Rebecca Miller ◽  
Stefan Van Dongen
Keyword(s):  
Orbital Angle

scholarly journals Description of two new species of the genus Heterochelamon Türkay & Dai, 1997 (Crustacea: Decapoda: Brachyura: Potamidae), from southern China

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9565
Author(s):  
Song-Bo Wang ◽  
Yi-Yang Xu ◽  
Jie-Xin Zou
Keyword(s):  
New Species ◽  
16S Rrna ◽  
Southern China ◽  
Guangdong Province ◽  
Rrna Gene ◽  
Freshwater Crab ◽  
Autonomous Region ◽  
Two New Species ◽  
Mitochondrial 16S Rrna Gene ◽  
Orbital Angle

This study describes two new species of freshwater crab of the genus Heterochelamon Türkay & Dai, 1997 from southern China, H. huidongense from Guangdong Province and H. jinxiuense from Guangxi Zhuang Autonomous Region. The two new species can be differentiated from congeners by characters derived from the shape of the epibranchial tooth, external orbital angle, cheliped proportions and structure of the male first gonopod. The present study brings the number of Heterochelamon species to seven. We used the mitochondrial 16S rRNA gene for a molecular analysis and the results are consistent with the morphological features that support the recognition of two new taxa.

scholarly journals Reflective Quasi-Continuous Metasurface with Continuous Phase Control for Light Focusing

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2147
Author(s):  
Long Chen ◽  
Zhenglong Shao ◽  
Jia Liu ◽  
Dongliang Tang
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Focal Spot ◽  
Continuous Phase ◽  
Diffraction Limit ◽  
Stray Light ◽  
Light Modulation ◽  
Suppression Effect ◽  
Nano Structures ◽  
Orbital Angle

Benefitting from the arbitrary and flexible light modulation, metasurface has attracted extensive attention and been demonstrated in different applications. However, most reported metasurface-based devices were normally composed of discrete micro or nano structures, therefore the discretization precision limited the performance of the device, including the focusing efficiency, stray light suppression, and broadband performance. In this work, an all-metallic reflective metasurface consisting of numerous quasi-continuous nanostructures is proposed to realize high-efficiency and broadband focusing. The constructed quasi-continuous metasurface (QCMS) is then verified numerically through electromagnetic simulation, and the numerical results show a higher focusing efficiency and a better stray light suppression effect, compared to a binary-phase-based metalens. Through the same design strategy, a QCMS with the ability to overcome the diffraction limit can also be constructed, and a focal spot with the size of 0.8 times the diffraction limit can be achieved. We expect that this quasi-continuous structure could be utilized to construct other high-performance devices that require continuous phase controls, such as the beam deflector, orbital angle momentum generator, and self-accelerating beam generator.

scholarly journals A STUDY OF THE SX PHE STAR BL CAM

2021 ◽  
Vol 57 (2) ◽  
pp. 419-431
Author(s):  
J. H. Peña ◽  
J. D. Paredes ◽  
D. S. Piña ◽  
H. Huepa ◽  
J. Guillen
Keyword(s):  
Binary System ◽  
Physical Parameters ◽  
Primary Star ◽  
Photoelectric Photometry ◽  
Companion Star ◽  
Maximum Light ◽  
Orbital Angle

We determined the physical parameters of the SX Phe star BL Cam from newly available times of maximum light and other times from the literature, as well as from uvby − β photoelectric photometry. From our analysis we found that this star is a binary system. The mass of the companion star was calculated in term of the mass of the primary star and the orbital angle. For this star we determined a metallicity [Fe/H] of −1.2 ± 0.3.

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