scholarly journals Novel Alaska Pollock Gelatin Sealant Shows High Adhesive Quality and Conformability

2019 ◽  
Vol 107 (6) ◽  
pp. 1656-1662
Author(s):  
Masatoshi Yamaoka ◽  
Naoki Maki ◽  
Ashoka Wijesinghe ◽  
Shoko Sato ◽  
Takahiro Yanagihara ◽  
...  
Keyword(s):  
Adhesive Quality

Ultrastructural and molecular characterization of Bacillidium vesiculoformis n. sp. (Microspora: Mrazekiidae) in the freshwater oligochaete Nais simplex (Oligochaeta: Naididae)

Parasitology ◽  
2004 ◽  
Vol 130 (1) ◽  
pp. 31-40 ◽  
Author(s):  
D. J. MORRIS ◽  
R. S. TERRY ◽  
K. B. FERGUSON ◽  
J. E. SMITH ◽  
A. ADAMS
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Infected Cell ◽  
Host Cell ◽  
Developmental Stages ◽  
Parasite Development ◽  
Adhesive Quality ◽  
Transmission Studies ◽  
A New Species

The development of a new species, Bacillidium vesiculoformis n. sp. (Microspora, Mrazekiidae), is described from the freshwater oligochaete Nais simplex (Oligochaeta, Naididae). Initial stages of parasite development consist of a monokaryotic merogony within a haemocyte of the intestinal blood sinus. The resulting hypertrophied haemocyte is attached to the chloragocytes of the sinus by fine cytoplasmic extensions with the sinus around the cell becoming greatly enlarged. The meronts within the haemocyte form diplokaryotic sporonts that undergo sporogenesis directly within the cytoplasm of the host cell. The infected cell becomes packed with spores and developmental stages, causing it dramatically to increase in size, eventually rupturing the oligochaete and cell. Sporogony appears to be disporoblastic. Released spores were observed to have an adhesive quality. Transmission studies conducted with mature spores failed to transmit the parasite horizontally although vertical transmission was observed. Phylogenetic analysis of the parasite demonstrated that B. vesiculoformis clustered with microsporidian parasites of bryozoa and two other microsporidians, Janacekia debaiseuxi and an unidentified Bacillidium sp.

An ovomucin-like protein on the surface of migrating primordial germ cells of the chick and rat

Development ◽  
1996 ◽  
Vol 122 (3) ◽  
pp. 915-923
Author(s):  
W. Halfter ◽  
B. Schurer ◽  
H.M. Hasselhorn ◽  
B. Christ ◽  
E. Gimpel ◽  
...  
Keyword(s):  
Germ Cells ◽  
Primordial Germ Cells ◽  
Major Constituent ◽  
Vitelline Membrane ◽  
Relative Molecular Mass ◽  
Male Chick ◽  
Dissociated Cells ◽  
Pas Staining ◽  
Adhesive Quality

A mucin was discovered on the surface of migratory primordial germ cells (PGCs) from chick and rat embryos by means of two monoclonal antibodies. The protein was found to be identical or closely related to ovomucin, a 600 X 10(3) relative molecular mass glycoprotein, and a major constituent of the vitelline membrane of the avian yolk. Based on its resemblance to ovomucin it is referred to as ovomucin-like protein (OLP). The OLP was expressed on PGCs from E3 to E7 female, and from E3 to E12 male chick embryos as the PGCs migrate and colonize the gonadal ridges. After the PGCs have settled in the gonads, they no longer express OLP. In tissue cultures of dissociated cells from E6 gonads, OLP was present only on cells that were positive for PAS staining, the standard histological method to identify PGCs in the chick embryo. Since unfixed PGCs were recognized by the antibodies, at least part of the OLP is localized on the cell surface. The anti-OLP antibodies also stained PGCs in the gonads of the rat embryo, showing that the expression of this antigen on PGCs is phylogenetically conserved. Ovomucin isolated from vitelline membrane prevented adhesion of fibroblasts but not PGCs when used a as a substratum in vitro. The anti-adhesive quality of the mucin resides in the sialic acid residues of the carbohydrate side chains. We propose that OLP has a similar anti-adhesive quality as the ovomucin from vitelline membrane, and that this anti-adhesive property is important to prevent precocious adhesion of migrating PGCs to blood vessel walls and to connective tissue in the mesentery as they migrate toward the gonadal ridges.

An Effective Method to Inspect Adhesive Quality of Wind Turbine Blades Using Transmission Thermography

2018 ◽  
Vol 37 (2) ◽  
Author(s):  
Xiao-li Li ◽  
Jiangang Sun ◽  
Ning Tao ◽  
Lichun Feng ◽  
Jing-ling Shen ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Adhesive Quality

An Experiment with DDT against Pests of stored Products

1947 ◽  
Vol 38 (2) ◽  
pp. 347-352 ◽  
Author(s):  
B. M. Jones
Keyword(s):  
Gum Arabic ◽  
Stored Products ◽  
Limited Time ◽  
Short Term ◽  
Carrier Medium ◽  
Rhizopertha Dominica ◽  
Term Basis ◽  
Adhesive Quality ◽  
Increased Activity ◽  
Very High

(1) The experiment was carried out on a short term basis due mainly to the limited time available for stored food products work, but it does show the possibilities of giving to the carrier medium an “adhesive” quality for the purpose of retaining an external layer of DDT upon bagged commodities.(2) The increased activity at night of insects attacking stored food is interesting and the movement of insect densities in bags containing foodstuffs needs further detailed investigation. It does seem that a very high percentage of adult beetles will migrate to the surface of bags from inside the contained foodstuffs, and this makes it possible to achieve a fair measure of control by coating bags with a deposit of DDT.(3) When a concentrate mist of a DDT emulsion-gum arabic solution is allowed to settle upon a bag surface, there is no detectable penetration of DDT through the sacking texture and therefore no danger of contaminating the contained foodstuffs.(4) A deposit of such a DDT film, at a concentration rate of 50 mgm. DDT/sq.ft. upon a jute bag surface, remains appreciably toxic to Tribolium castaneum, Calandra oryzae, Rhizopertha dominica and Laemophloeus spp. for a period of approximately 60 days.

Efficacy of phototherapy with different conventional surface treatments on adhesive quality of lithium disilicate ceramics

2019 ◽  
Vol 25 ◽  
pp. 292-295 ◽  
Author(s):  
Fahad Alkhudhairy ◽  
Mustafa Naseem ◽  
Zeeshan H Ahmad ◽  
Abrar N Alnooh ◽  
Fahim Vohra
Keyword(s):  
Lithium Disilicate ◽  
Surface Treatments ◽  
Adhesive Quality

Making an open-tray implant or abutment-level impression technique easier

Dental Update ◽  
2021 ◽  
Vol 48 (7) ◽  
pp. 592-593
Author(s):  
Javed Ikram ◽  
Nabeel Essa
Keyword(s):  
Impression Material ◽  
Impression Technique ◽  
Adhesive Quality ◽  
Good Contact ◽  
Conventional Methods ◽  
Made In

Various methods exist for taking implant impressions. The open-tray or pick-up impression technique is one of the conventional methods for transferring the impression coping from the implant to the impression. In this method, a window directly above the implant is made in a stock or custom tray to allow access to the impression coping. Traditionally, the window is either left open, or closed with melted wax or foil. This technique tip describes a modification to create a stable and secure seal over the opening using rayon-based adhesive tapes. The benefits of this modification over the conventional open-tray technique are due to the enhanced adhesive quality of the materials to metal or plastic. Because there is less chance of impression material leaking from the tray window into the mouth, it is more comfortable for patients and less messy for clinicians. The benefit of this method over the closed-tray technique is the ability to feel for the head of the impression coping at the same time as making sure the impression material is in good contact with the underlying structures. It is easy to use, and efficient in terms of time and cost.

BOND QUALITY EVALUATION USING ADHESIVE DOPED WITH MAGNETO-ELECTRIC NANOPARTICLES

2021 ◽  
Author(s):  
JULIETTE DUBON ◽  
GONZALO SEISDEDOSMARIANA ONTIVEROS ◽  
MARIANA ONTIVEROS ◽  
BENJAMIN BOESL ◽  
DWAYNE MCDANIEL
Keyword(s):  
Glass Transition ◽  
Composite Structures ◽  
Quality Evaluation ◽  
Adhesive Bonding ◽  
Curing Time ◽  
Bond Quality ◽  
Non Invasive ◽  
Mechanical Fasteners ◽  
Adhesive Quality ◽  
Looper System

Adhesive bonding for composite structures offers multiple advantages over mechanical fasteners. Although the use of adhesive bonding has increased in the aerospace industry, it has still not replaced mechanical fasteners due to it being harder to inspect for damage after being manufactured/assembled, causing unreliability. Therefore, intensive quality control is needed while manufacturing to avoid weak bonds or any type of imperfection at the adhesive-adherend interface. To ensure the reliability of an adhesive bond, this project focuses on the advancement of a non-invasive field tool for adhesive quality evaluation. The tool developed is based on a B-H looper system, which can approximate the quality of an epoxy-based adhesive containing magneto-electric nanoparticles (MENs) by detecting changes in electric fields at the molecular level. Epoxy based adhesive samples containing 5 vol. % of MENs were manufactured and then scanned using the B-H looper system to correlate their magnetic signature as a function of curing time. It was determined that the magnetic signal converged between curing hours 10 and 12, indicating proper curing. Plain adhesive dogbone samples were used to determine the maximum tensile stress of the adhesive as a function of curing time, which also started converging at around the same curing hours until reaching ~41 MPa. Additionally, the evolution of the glass transition temperature of the adhesive was evaluated during the first curing hours. Convergence began at a curing time of 10 hours until reaching ~137 ⁰ C for fully cured samples. B-H looper magnetic signatures, tensile stresses testing, and glass transition temperatures were all correlated indicating a fully cured adhesive sample between 10 and 12 curing hours. These studies demonstrate the capabilities of the B-H looper system as a non-invasive inspection tool for adhesive quality.

scholarly journals Autologous fibrin glue: automated production and adhesive quality

2017 ◽  
Vol 3 (2) ◽  
pp. 397-400
Author(s):  
Katharina Düregger ◽  
Sabrina Frenzel ◽  
Markus Eblenkamp
Keyword(s):  
Fibrin Glue ◽  
Fibrinogen Concentration ◽  
Automated Production ◽  
Immunological Responses ◽  
Promising Tool ◽  
Two Component ◽  
Autologous Fibrin Glue ◽  
Adhesive Quality ◽  
Blood Volumes ◽  
Reduced Risk

AbstractFibrin glue is a two-component adhesive used to stop bleeding, seal wound edges and for scaffolds in tissue engineering. Autologous products result in reduced risk of contamination and immunological responses compared to commercially available fibrin glue. However, reproducibility due to patient dependent sealant properties of autologous fibrin glue preparation is low. In this study a fully automated production process for both the fibrinogen and thrombin component from small blood volumes was developed. The resulting fibrinogen concentration, thrombin activity and sealant properties of the fibrin glue were determined. The fully automated and closed production system proved to be a promising tool for fast and easy production of autologous fibrin glue with an effective adhesive quality.

scholarly journals Adhesive quality inspection of wind rotor blades using thermography

2018 ◽  
Author(s):  
Xiaoli Li ◽  
Jiangang Sun ◽  
Jingling Shen ◽  
Xun Wang ◽  
Cunlin Zhang ◽  
...  
Keyword(s):  
Rotor Blades ◽  
Quality Inspection ◽  
Adhesive Quality
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