Observations of hard-shell mating in the portunid crab Charybdis japonica (A. Milne-Edwards, 1861) (Decapoda: Brachyura)

Localised plastic deformation in Persistent Slip Bands(PSBs) is a characteristic feature of fatigue in many materials. The dislocation structure in the PSBs contains regularly spaced dislocation dipole walls occupying a volume fraction of around 10%. The remainder of the specimen, the inactive "matrix", contains dislocation veins at a volume fraction of 50% or more. Walls and veins are both separated by regions in which the dislocation density is lower by some orders of magnitude. Since the PSBs offer favorable sites for the initiation of fatigue cracks, the formation of the PSB wall structure is of great interest. Winter has proposed that PSBs form as the result of a transformation of the matrix structure to a regular wall structure, and that the instability occurs among the broad dipoles near the center of a vein rather than in the hard shell surounding the vein as argued by Kulmann-Wilsdorf.

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Cardiovascular implants and artificial organs. Hard-shell cardiotomy/venous reservoir systems (with/without filter) and soft venous reservoir bags

10.3403/02430698u ◽

2015 ◽

Keyword(s):

Artificial Organs ◽

Reservoir Systems ◽

Hard Shell ◽

Cardiovascular Implants

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Cardiovascular implants and artificial organs. Hard-shell cardiotomy/venous reservoir systems (with/without filter) and soft venous reservoir bags

10.3403/30321713 ◽

2016 ◽

Keyword(s):

Artificial Organs ◽

Reservoir Systems ◽

Hard Shell ◽

Cardiovascular Implants

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The Effectiveness of Candidate Probiotic Bacteria to Control Vibriosis Disease

Aquatic Science and Technology ◽

10.5296/ast.v5i2.11594 ◽

2017 ◽

Vol 5 (2) ◽

pp. 1

Author(s):

Mulyati Mulyati ◽

Suryati Suryati ◽

Irfani Baga

Keyword(s):

Survival Rate ◽

Sea Water ◽

Challenge Test ◽

Probiotic Bacteria ◽

Pathogenicity Test ◽

Inhibitory Ability ◽

Significant Difference ◽

Portunid Crab

The study aims to isolate, characterize, and examine probiotic bacteria's inhibitory ability against Vibrio harveyi bacteria, both in-vitro and in vivo. Methods used in the study consist of 1) An Isolation of Candidate Probiotic Bacteria, 2) An Antagonistic Test of Candidate Probiotic Bacteria in vitro, 3) An Identification of Bacteria, 4) A Pathogenicity Test of Candidate Probiotic Bacteria, 5) An Antagonistic Test of Candidate Probiotic Bacteria against V. harveyi in vivo. According to the isolation of candidate probiotic bacteria, there are 18 isolated candidate probiotic. After being tested for its inhibitory ability in vitro, there are 8 isolates with zone of inhibition as follows: isolate MM 7 from intestine (22 mm), isolate MM 6 from intestine (12 mm), isolate MM 10 from sea water (10 mm), isolate MM 5 from intestine (9 mm), isolate MM 4 from intestine (8 mm), isolate MM 3 from intestine (7 mm), isolate MM 2.2 from intestine (7 mm), isolate MM 2.1 from intestine (7 mm). Eight genera of the candidate probiotic bacteria is derived from Portunid crab, they are Staphylococcus, Streptococcus, bacillus, vibrio, Alcaligenes, Lactobacillus, micrococcus. Before proceeding the V. harveyi bacterial challenge test in vivo, three potential isolates consisting of MM6, MM7 and MM10 as the probiotic bacteria are pathogenicity-tested against V. harveyi. The survival rate of Portunid crab on pathogenicity test using MM6, MM7 and MM10 generates 91.11-100%, while the control generates 100% survival rate. Variance analysis result through post-hoc Tukey's Honest Significant Difference (HSD) test at 95% confidence interval indicates that isolate MM7 and MM10 are significantly able to increase hatchling Portunid crab's survival rate.

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‘Soft Law in a Hard Shell’: India, International Rulemaking and the International Solar Alliance

Transnational Environmental Law ◽

10.1017/s2047102520000400 ◽

2021 ◽

pp. 1-25

Author(s):

Vyoma Jha

Keyword(s):

Developing Countries ◽

Leadership Role ◽

Soft Law ◽

Legal Form ◽

The Social ◽

Climate Action ◽

Hard Shell ◽

The Creation ◽

State Actors ◽

Political Economy Approach

Abstract This article examines the creation of the International Solar Alliance (ISA), a new international organization led by India and backed primarily by developing countries. Official documents and wide-ranging interviews offer insights into the treaty-making process. Using a political economy approach to the study of international law, the article analyzes politico-legal issues associated with the creation of the ISA. The legal form of the ISA is best described as ‘soft law in a hard shell’: it uses the legal infrastructure of a treaty while relying on the social structure of participating actors for its future implementation. Empirical evidence suggests that three factors explain the treaty structure of the ISA: India's leadership role in the treaty-making process, the early involvement of non-state actors, and the preference of developing countries for legal form. Ultimately, the case illustrates India's shift towards a leadership role in climate change governance, and the steady emergence of non-state actors in driving climate action.

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Pressure Sensor System for Customized Scoliosis Braces

Sensors ◽

10.3390/s21041153 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1153

Author(s):

Franz Konstantin Fuss ◽

Asliza Ahmad ◽

Adin Ming Tan ◽

Rizal Razman ◽

Yehuda Weizman

Keyword(s):

Pressure Sensor ◽

Testing Machine ◽

Force Plate ◽

Cost Effective ◽

Mobile Systems ◽

Sensor System ◽

Closed Cell ◽

Hard Shell ◽

Energy Absorbers ◽

Material Testing Machine

Hard-shell thoracolumbar sacral orthoses (TLSOs) are used for treating idiopathic scoliosis, a deformation of the spine with a sideways curvature. The pressure required inside the TLSO for ideal corrective results remains unclear. Retrofitting TLSOs with commercially available pressure measurement systems is expensive and can only be performed in a laboratory. The aim of this study was to develop a cost-effective but accurate pressure sensor system for TLSOs. The sensor was built from a piezoresistive polymer, placed between two closed-cell foam liners, and evaluated with a material testing machine. Because foams are energy absorbers, the pressure-conductance curve was affected by hysteresis. The sensor was calibrated on a force plate with the transitions from loading to unloading used to establish the calibration curve. The root mean square error was 12% on average within the required pressure range of 0.01–0.13 MPa. The sensor reacted to the changing pressure during breathing and different activities when tested underneath a chest belt at different tensions. The peak pressure reached 0.135 MPa. The sensor was further tested inside the scoliosis brace during different activities. The measured pressure was 0.014–0.124 MPa. The results from this study enable cheaper and mobile systems to be used for clinical studies on the comfort and pressure of braces during daily activities.

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