Most gas barrier films produce cracks that lead to a significant loss of integrity when strain is applied. In order fabricate stretchable with low water permeability and high endurance after stretching, we used polydiallydimethylammonium (PDDA) mixed graphene oxide (GO) poly (vinyl alcohol) (PVA) montmorillonite (MMT). These were manufactured by layer-by-layer assembly on an Ecoflex/polydimethy...

BACKGROUND The relation between left ventricular (LV) oxygen consumption (MVO2) and pressure-volume area (PVA) developed in isolated hearts provides a powerful method to understand cardiac energetics. We investigated application of this relation to the intact circulation, determining its response to steady-state and transient load alterations and enhanced contractility in conscious animals. M...

We have reported the linear relation of myocardial oxygen consumption per beat (VO(2)) and systolic pressure-volume area (PVA) in the left ventricle of the cross-circulated rat heart. The VO(2) intercept (PVA-independent VO(2)) is primarily composed of VO(2) for Ca(2+) handling in excitation-contraction coupling and basal metabolism. Recently, we proposed a new index for oxygen cost of contract...

Prinzmetal's angina, often referred to as "variant" angina, is a temporary increase in coronary vascular tone (vasospasm) causing a marked, but transient reduction in luminal diameter. This coronary vasospastic state is usually focal at a single site and can occur in either a normal or diseased vessel. Patients are predominantly younger women who may not have the classical cardiovascular risk f...

We have previously indicated that porcine blastocysts can be produced by in vitro fertilization (IVF) and culture (IVC) in chemically defined porcine gamete medium (PGM) and porcine zygote medium (PZM)-5, respectively, In the present study, the effects of basic media and macromolecular components on in vitro maturation (IVM) were investigated to develop a defined system for in vitro embryo prod...

Genome-linked protein VPg of Potato virus A (PVA; genus Potyvirus) has essential functions in all critical steps of PVA infection, i.e. replication, movement, and virulence. Structural features of the recombinant PVA VPg were investigated with the aim to create an outline for structure-function relationships. Circular dichroism data of PVA VPg revealed a distinct near-UV spectrum indicating tha...

Portal vein aneurysm (PVA) is a rare abnormal dilatation of the portal vein, which has not been reported in dogs. We describe the findings of ultrasound and computed tomography in a case of PVA in a young male toy poodle, with the final diagnosis established by explorative surgical observation. The dog had an aneurysmal fusiform dilatation in the extrahepatic portal vein with portal hypertensio...

Introduction There are several materials currently used as tissue mimicking phantoms depending on the imaging modality in question. Poly(vinyl alcohol) cryogel (PVA-C) not only has the potential to be used as a multi-modality phantom, but it also has a variety of biomedical advantages, including its nontoxic, non-carcinogenic and biodegradable characteristics (1). This polymer is easily produce...

Poly (viny1 alcohol) (PVA) of 72000 g mol -1 molar mass was cross linked through cold cast esterification with different % MA and EDTA (10 , 20 30 ), two mixture l (20 %/5% 20%/10% .Molecular structures the produced membranes were identified by FTIR spectral analysis .Mechanical measurements showed that, PVA mol% gave higher tensile strength value, while 30mol% elongation value at break.Water s...

A Love wave humidity sensor is developed by using a multilayer structure consisting of PVA/SiO2 layers on an ST-90°X quartz substrate. The theoretical result shows that the sensor with such a two-layer structure can achieve a higher sensitivity and a smaller loss than the structures with a single polymer layer. Comparative experiments are performed for the sensor incorporating PVA/SiO2 layers a...