Abstract
Scanning electron microscopy (SEM) is a valuable method for examining surface structures. Taking wax impressions of plant structures, such as leaves, is a nondestructive procedure that makes it possible to view changes in surface structures over time, such as during development. This protocol descri...
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PMID: 20810626
PDF is available here.
Abstract
We reported high performance OLED devices with transparent and conductive carbon nanotube anodes after modification. The modifications include IMRE proprietary PEDOT:PSS composite top coating (PS(C)), concentrated HNO(3) acid soaking, and polymer encapsulation. For PS(C)-modified nanotube thin film...
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PMID: 19588907
PDF is available here.
Abstract
Amine monofunctional gold nanoparticles (1-AuNPs) were synthesized by employing a solid-supported technique and pH-switchable pseudorotaxane formation. Purification was repeatedly facilitated using crown ether peripherally coated superparamagnetic iron oxide microspheres to yield the monofunctional...
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PMID: 19621879
PDF is available here.
Abstract
We have measured the dispersibility of single-walled carbon nanotubes in a range of solvents, observing values as high as 3.5 mg/mL. By plotting the nanotube dispersibility as a function of the Hansen solubility parameters of the solvents, we have confirmed that successful solvents occupy a well-def...
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PMID: 19655724
PDF is available here.
Abstract
A concentrated fish soup could be gelled in the winter and re-solled upon heating. In contrast, some synthetic copolymers exhibit an inverse sol-gel transition with spontaneous physical gelation upon heating instead of cooling. If the transition in water takes place below the body temperature and th...
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PMID: 18648673
PDF is available here.
Abstract
I bands indicated that the adsorption of fibrinogen on 316LVM results in significant changes in the protein's secondary structure that occur predominantly within the first minute of adsorption. Among the investigated structures, the alpha-helix structure undergoes the smallest changes, while the bet...
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PMID: 18446250
PDF is available here.
Abstract
A series of PCL-based shape memory polyurethanes was synthesized via bulk pre-polymerization. Their thermal, mechanical properties, shape memory properties, softening and hardening processes were investigated by the experimental approach and made comparison with a commercially available orthotic mat...
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PMID: 18973722
PDF is available here.
Abstract
A highly pH-sensitive hybrid hydrogel with semi-interpenetrating networks (semi-IPN)composed of co-polymer networks of acrylamide-methacrylic acid (P(AAm-co-MAA)) and polyaniline (PANI)/carboxyl-functionalized multi-walled carbon nanotubes (MWNTs-COOH) was designed and synthesized by a cross-linking...
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PMID: 18973726
PDF is available here.
Abstract
Nanotechnology is a new field of science and technology that has already had significant impact in the development of novel products in industry. In medicine, application of nanotechnology has the potential to develop new imaging agents, pharmaceutical drugs and medical devices with unique physical...
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PMID: 17390307
PDF is available here.
Abstract
The study was completed by 107 patients (53 with PMMA and 54 with titanium cage). No significant difference between the two groups could be established with respect to the clinical outcome. In each group, 26 patients scored excellent. Good results were found in 19 PMMA patients and 16 titanium cage...
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PMID: 16969747
PDF is available here.
Abstract
Infection is still a major complication associated with surgery in orthopedics and traumatology. The implant design, the implant material, and the implantation technique may play essential roles in preventing infection. The goal of this paper is to discuss a series of experiments evaluating differen...
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PMID: 16651074
PDF is available here.
Abstract
We focused on the novel methods that involve SBSE with in situ derivatization, SBSE with in situ de-conjugation, thermal desorption (TD) in the multi-shot mode and TD with in tube derivatization method. Those methods were applied successfully to the trace analysis of environmental and biological sam...
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PMID: 16242285
PDF is available here.
Abstract
Biomedical materials developed from the first- and second-generations to the third-generation in the 1990s. Regenerative medicine was able to help the injured tissues and organs to be regenerated by the use of the capability of healing themselves. This kind of medicine included the technologies of t...
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PMID: 16529332
PDF is available here.
Abstract
The objective of this study was to characterize a series of anionic biodegradable polymer resins for their compatibility in a biological environment, comparing them with respect to the influence of ionic function on enzyme catalyzed biodegradation when the polymers were incorporated into a porous ca...
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PMID: 15958241
PDF is available here.
Abstract
We attribute this effect to the "superhydrophilicity" of MPC-coated surfaces, whereas hydrophobic surfaces are well known to reduce bacterial retention and thus to inhibit a crucial step in the formation of bacterial biofilms that lead to biomedical device-related infections and complications....
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PMID: 15953697
PDF is available here.
Abstract
This crossover study evaluated the effect of calcium carbonate (CaCO(3))-based monofluorophosphate dentifrice on enamel remineralization. Ten volunteers wore palatal appliances containing four enamel blocks with caries-like lesions, two of them covered by a test plaque of mutans streptococci. The fo...
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PMID: 15914990
PDF is available here.
Abstract
Reconstruction of skull base defects following tumor resection is of paramount importance in avoiding serious and life-threatening complications. Cranial base surgery has evolved and outcomes have steadily improved as increasingly reliable reconstructive techniques have been adapted to repair the ch...
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PMID: 14515078
PDF is available here.
Abstract
Tissue reactions to active modified composite material were studied in experiments on Chinchilla rabbits. In the first series of experiments plates from composite material were implanted: polymethylmethacrylate (PMMA) plates were used in group 1, PMMA composition with hydroxyapatite (HAP) in group 2...
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PMID: 12772550
PDF is available here.
Abstract
We describe a model which can be used for in vitro biocompatibility assays of biomaterials. We studied the in vitro response of human osteoarthritis or rheumatoid arthritis fibroblast-like synoviocytes to Al2O3 or ZrO2 particles by analysing the production of interleukin-1 (IL-1) and interleukin-6 (...
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PMID: 12211691
PDF is available here.
Abstract
Flexible tubings are extensively used in pharmaceuticals, food industry, and in hospitals. This study was undertaken to compare various flexible tubings to determine their sorption characteristics, using methyl and propyl parabens. After 24 h, some tubings showed 100% sorption of propylparaben and o...
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PMID: 11485184
PDF is available here.
Abstract
Our case suggests that gripping an epidural catheter with a hemostat during the removal might result in accidental breakage of the catheter. To demonstrate the effect of the use of a hemostat, tensile strengths of catheters were measured while they were being held with either a stainless steel or ru...
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PMID: 11429367
PDF is available here.
Abstract
Scientific cooperation between laboratories in the United States is no longer confined to those at the same institution, nor even within the boundaries of the country. More than ever, scientists are forming collaborations with their peers outside the U.S., leading not only to the exchange of knowled...
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PMID: 18265035
PDF is available here.
Abstract
OBJECTIVE: To evaluate the ability of collagen film, collagen gel, sodium hyaluronate/carboxymethylcellulose film, and fibrin glue to prevent adhesion formation. DESIGN: Randomized trial using a rat model of a standardized abdominal wound and cecal wound. SETTING: University research laboratory. ANI...
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PMID: 10632432
PDF is available here.
Abstract
At low angles the scattering of X-rays in the diagnostic energy range (low-momentum transfer), it is probable that the scattering interaction will be coherent. This coherence gives rise to interference effects resulting in X-ray diffraction patterns that are characteristic of the scattering material...
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PMID: 11003511
PDF is available here.
Abstract
Densitometry with a hydrometer is an effective non-destructive method to identify RGP materials and to verify their quality. The method is easier when lens blanks are tested, but in spite of differences in shape, size, and weight, densitometry may also be used with new or used contact lenses. Its si...
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PMID: 10555734
PDF is available here.
Abstract
To improve existing products and create new ones manufacturers of medical devices need to consider the latest technology and materials. This review of recent developments in joining techniques describes alternative joining processes and how to establish best practice when working with adhesives and...
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PMID: 10186976
PDF is available here.