On bending crashworthiness of smooth-shell lattice-filled structures

2022 ◽  
Vol 171 ◽  
pp. 108800
Author(s):  
Hanfeng Yin ◽  
Delin Guo ◽  
Guilin Wen ◽  
Zhantao Wu
Keyword(s):  
Smooth Shell

In-situ synchrotron X-ray tomography investigation of the imperfect smooth-shell cylinder structure

2021 ◽  
pp. 113926
Author(s):  
Xiaofei Cao ◽  
Zhixin Huang ◽  
Chunwang He ◽  
Wenwang Wu ◽  
Li Xi ◽  
...  
Keyword(s):  
Smooth Shell ◽  
X Ray

scholarly journals A new species of nematoda parasite of the cerambicid eucalyptus longhorned borer from Argentina

2011 ◽  
Vol 48 (3) ◽  
pp. 203-206
Author(s):  
M. Achinelly ◽  
N. Camino
Keyword(s):  
New Species ◽  
Excretory Pore ◽  
Smooth Shell ◽  
A New Species

AbstractArtigasia indigena n. sp. is characterized by the cuticle thin, annulated and with spines arranged in regular longitudinal rows from the first ring to the base of medial bulb. The first ring is differentiated with eight spines, the second ring is bigger and without spines, and then a series of small rings with spines come up to the base of medial bulb. Lateral alae absent, stoma short with four thickening cuticle like teeth, excretory pore posterior situated at the beginning of the intestine, V = 67 %, eggs oval with smooth shell, male without spicule, and genital papillae arranged with one pair of preanal papillae and one pair of postanal papillae.

A Method for Predicting Pressure Drop in a Shell-and-Tube Heat Exchanger with Roughened Tubes and a Smooth Shell Surface

1985 ◽  
Vol 6 (1) ◽  
pp. 26-30 ◽  
Author(s):  
O. M. BRAGINA ◽  
V. L. LELCHUK ◽  
A. G. SOROKIN ◽  
A. V. TURKIN ◽  
K. F. SHUISKAYA
Keyword(s):  
Heat Exchanger ◽  
Pressure Drop ◽  
Shell Surface ◽  
Smooth Shell ◽  
Tube Heat Exchanger ◽  
Shell And Tube

scholarly journals A new species of Blatticola Schwenk, 1926 (Oxyurida, Thelastomatidae) a parasite of Anurogryllus muticus (De Geer, 1773) (Orthoptera, Gryllidae) from Argentina

2007 ◽  
Vol 47 (15) ◽  
pp. 181-186 ◽  
Author(s):  
María Fernanda Achinelly ◽  
Nora B. Camino
Keyword(s):  
New Species ◽  
Body Length ◽  
Mouth Opening ◽  
Nerve Ring ◽  
The Body ◽  
The Other ◽  
Smooth Shell ◽  
Small Pore ◽  
Basal Bulb ◽  
A New Species

Blatticola cristovata n. sp. (Oxyurida, Thelastomatidae) a parasite of the cricket Anurogryllus muticus (De Geer, 1773) (Orthoptera, Gryllidae) from Argentina, is described and illustrated. This is the first species of the genus Blatticola found parasitizing cricket. This new species is characterized in females by having the cuticle annulated through the body length, the mouth opening is subtriangular and surrounded by eight cephalic papillae, the stoma is short with three pairs placed in two rows of cuticular sclerotised plates, amphids in small pore shaped, oesophagus is divided into three parts, anterior cylindrical corpus, isthmus distinct, and basal bulb valved, the nerve ring is situated around the middle of corpus, the intestine is wide broad anteriorly, oval eggs, smooth shell, with a straight side, and the other side with a band running longitudinally. Males with one pair of preanal, one pair of adanal and two pairs of postanal papillae, and the tail appendage short, conical and pointed.

Kalasinemys, a new xinjiangchelyid turtle from the Late Jurassic of NE Thailand

2019 ◽  
Vol 156 (10) ◽  
pp. 1645-1656 ◽  
Author(s):  
Haiyan Tong ◽  
Wilailuck Naksri ◽  
Eric Buffetaut ◽  
Suravech Suteethorn ◽  
Varavudh Suteethorn ◽  
...  
Keyword(s):  
Late Jurassic ◽  
Upper Jurassic ◽  
Arterial System ◽  
Shell Material ◽  
Shell Surface ◽  
Smooth Shell ◽  
System Characteristic

AbstractA new xinjiangchelyid turtle, Kalasinemys prasarttongosothi n. gen. n. sp., is described on the basis of skull and shell material from the Upper Jurassic Phu Kradung Formation at Phu Noi locality, Kalasin Province, in NE Thailand. This second xinjiangchelyid turtle from Phu Noi is distinct from Phunoichelys thirakhupti by the smooth shell surface, the presence of a cervical notch, and vertebral 1 narrower than nuchal. The skull presents an arterial system characteristic of the Xinjiangchelyidae (basal Eucryptodira), and its outline is similar to that of Annemys spp. known from the Middle–Late Jurassic of China and Mongolia, but distinct from the latter mainly by the wider triturating surface, smaller foramen palatinum posterius and the shape of the prefrontal and frontal, as well as that of the basisphenoid and basioccipital. Based on the turtle assemblages, the correlation with mainland Asia further supports a Late Jurassic age for the lower part of the Phu Kradung Formation where Phu Noi site is located stratigraphically. Our study provides new insight on the evolution of the basal eucryptodiran turtles in Asia.

Research on the Dissolving Character of Active Si/Al in Fly Ash Activated by Alkali

2010 ◽  
Vol 150-151 ◽  
pp. 1790-1795
Author(s):  
Hui Li ◽  
Shi Shi ◽  
De Long Xu ◽  
Li Jun Zhuge ◽  
Le Le Zhang
Keyword(s):  
Fly Ash ◽  
Reaction Time ◽  
Glass Phase ◽  
Silicon Oxide ◽  
Solution Concentration ◽  
Vitreous Phase ◽  
Activator Concentration ◽  
Active Components ◽  
Smooth Shell ◽  
Naoh Solution

This paper investigated the influence of activator concentration, reaction time and fineness of fly ash on the dissolving character of the active Si/Al in fly ash activated by alkali. The results indicated that with the increase of the NaOH solution concentration, the dissolving percentage of active Si/Al in the fly ash went up. The finer the fly ash particles were, the higher dissolving percentage of active Si/Al was obtained. Under strong basic (2M NaOH solution) and boiling condition, the reaction time of active Si/Al dissolving was short and less than 10 minutes. The content of vitreous phase contributed to the content of active components. Active Si existed in the state of Q0 unit which presented an isolated silicon-oxide tetrahedron in fly ash, and active Al exhibited as Al[OSi]3 and Al[OSi]4 units in 4 coordinate. As the fly ash was activated by alkali, smooth shell of fly ash was gradually corroded by NaOH solution, glass phase was dissolved and crystal phase was exposed to the outside.

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