scholarly journals Postmortem aging and freezing and thawing storage enhance ability of early deboned chicken pectoralis major muscle to hold added salt water

2012 ◽  
Vol 91 (5) ◽  
pp. 1203-1209 ◽  
Author(s):  
H. Zhuang ◽  
E.M. Savage
Keyword(s):  
Salt Water ◽  
Pectoralis Major Muscle ◽  
Pectoralis Major ◽  
Freezing And Thawing ◽  
Postmortem Aging ◽  
Added Salt

Surfactant Impurities Can Explain the Jones-Ray Effect

2018 ◽  
Author(s):  
Timothy Duignan ◽  
Marcel Baer ◽  
Christopher Mundy
Keyword(s):  
Surface Tension ◽  
Electrostatic Potential ◽  
Driving Forces ◽  
Salt Water ◽  
Fundamental Property ◽  
Apparent Contradiction ◽  
Low Salt ◽  
Air Water Interface ◽  
Added Salt ◽  
Effect Of Surface

<div> <p> </p><div> <div> <div> <p>The surface tension of dilute salt water is a fundamental property that is crucial to understanding the complexity of many aqueous phase processes. Small ions are known to be repelled from the air-water surface leading to an increase in the surface tension in accordance with the Gibbs adsorption isotherm. The Jones-Ray effect refers to the observation that at extremely low salt concentration the surface tension decreases in apparent contradiction with thermodynamics. Determining the mechanism that is responsible for this Jones-Ray effect is important for theoretically predicting the distribution of ions near surfaces. Here we show that this surface tension decrease can be explained by surfactant impurities in water that create a substantial negative electrostatic potential at the air-water interface. This potential strongly attracts positive cations in water to the interface lowering the surface tension and thus explaining the signature of the Jones-Ray effect. At higher salt concentrations, this electrostatic potential is screened by the added salt reducing the magnitude of this effect. The effect of surface curvature on this behavior is also examined and the implications for unexplained bubble phenomena is discussed. This work suggests that the purity standards for water may be inadequate and that the interactions between ions with background impurities are important to incorporate into our understanding of the driving forces that give rise to the speciation of ions at interfaces. </p> </div> </div> </div> </div>

Possibility of simultaneous transposition of segments of the pectoralis major muscle to restore flexion in the shoulder and elbow joints (clinical observation)

MedAlliance ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 61-68
Keyword(s):  
Anterior Part ◽  
Pectoralis Major Muscle ◽  
Elbow Flexion ◽  
Functional Results ◽  
Proximal Part ◽  
Deltoid Muscle ◽  
Pectoralis Major ◽  
Orthopedic Surgeons ◽  
Active Function ◽  
Head Neck

The pectoralis major is a widely used muscle in reconstruction surgery for replacement soft tissue defects of a head, neck, thorax, upper limbs and restoration of muscle active function. The peculiarities of anatomy of the pectoralis major makes it possible to divide the muscle into several segments with their own innervations and supply and use them independently from each other. This article describes the anatomy of the pectoralis major and the opportunity for clinical applications of different segments of this muscle. The authors demonstrate the result of the restoration of shoulder and elbow flexion in a patient with arthrogryposis due to simultaneous transfer of the proximal part of pectoralis major to the anterior part of the deltoid muscle and the distal part of pectoralis major to the biceps with good functional results. The article will be useful for plastic surgeons, orthopedic surgeons and physiotherapists.

Regional differential stretching of the pectoralis major muscle: An ultrasound elastography study

2021 ◽  
Vol 121 ◽  
pp. 110416
Author(s):  
Jun Umehara ◽  
Yusaku Sato ◽  
Tome Ikezoe ◽  
Masahide Yagi ◽  
Shusuke Nojiri ◽  
...  
Keyword(s):  
Pectoralis Major Muscle ◽  
Pectoralis Major ◽  
Ultrasound Elastography

scholarly journals Unilateral pectoralis major muscle flap for the treatment of sternal wounds due to Ludwig's angina

2017 ◽  
Vol 15 (1) ◽  
pp. 174-177 ◽  
Author(s):  
Antonio Albacete Neto ◽  
Pedro S Coltro ◽  
Grazielle S Horácio ◽  
Ivan R Almeida ◽  
Jayme A Farina Junior
Keyword(s):  
Pectoralis Major Muscle ◽  
Muscle Flap ◽  
Pectoralis Major ◽  
Pectoralis Major Muscle Flap ◽  
Ludwig’S Angina ◽  
Ludwig's Angina

Modifying surface forces through control of surface potentials

2017 ◽  
Vol 199 ◽  
pp. 261-277 ◽  
Author(s):  
Ran Tivony ◽  
Jacob Klein
Keyword(s):  
Surface Potential ◽  
Electrolyte Solution ◽  
Strong Electric Field ◽  
Salt Water ◽  
Surface Force ◽  
Adhesion Energy ◽  
Force Balance ◽  
Electrostatic Energy ◽  
Added Salt ◽  
Vdw Interaction

Combining direct surface force measurements with in situ regulation of surface potential provides an exceptional opportunity for investigating and manipulating interfacial phenomena. Recently, we studied the interaction between gold and mica surfaces in water with no added salt, while controlling the metal potential, and found that the surface charge at the metal may vary, and possibly even change its sign, as it progressively approaches the (constant-charge) mica surface [Langmuir, 2015, 31(47), 12845–12849]. Such a variation was found to directly affect the nature of the contact and adhesion between them due to exclusion of all mobile counterions from the intersurface gap. In this work, we extend this to examine the potential-dependent response of the adhesion and interaction between gold and mica to externally applied voltages and in electrolyte solution. Using a surface force balance (SFB) combined with a three-electrode electrochemical cell, we measured the normal interaction between gold and mica under surface potential regulation, revealing three interaction regimes – pure attraction, non-monotonic interaction from electrostatic repulsion to attraction (owing to charge inversion) and pure repulsion. Accordingly, the adhesion energy between the surfaces was found to vary both in no added salt water and, more strongly, in electrolyte solution. We justify this potential-dependent variation of adhesion energy in terms of the interplay between electrostatic energy and van der Waals (vdW) interaction at contact, and attribute the difference between the two cases to the weaker vdW interaction in electrolyte solution. Finally, we showed that through abruptly altering the gold surface potential from negative to positive and vice versa, the adhesion between gold and mica can be reversibly switched on and off. We surmise that the process of bringing the surface into contact is associated with the formation of a strong electric field O (108 V m−1) in the intersurface gap.

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