Strengh

The cooperative effect of random coupling strength and time-periodic coupling strengh on synchronization transitions in one-way coupled neural system has been investigated by mean field approach. Results show that cooperative coupling strength (CCS) plays an active role for the enhancement of synchronization transitions. There exist an optimal frequency of CCS which makes the system display the best CCS-induced synchronization transitions, a critical frequency of CCS which can not further affect the CCS-induced synchronization transitions, and a critical amplitude of CCS which can not occur the CCS-induced synchronization transitions...

BACKGROUND: Most operations for carpometacarpal joint osteoarthritis of the thumb irreversibly alter or destroy the anatomy. There is a high demand for minimally invasive alternatives. The authors report the results of autologous fat transfer for treatment of thumb carpometacarpal joint osteoarthritis. METHODS: In a prospective study, 50 patients with thumb carpometacarpal joint osteoarthritis were observed for 1 year after autologous fat transfer. Manual liposuction and centrifugation were performed...

BACKGROUND: Goal of the present study was the evaluation of clinical and radiological results after treatment of the first carpometacarpal joint by trapezium resection and implantation of a Swanson silicone prosthesis by means of a retrospetive study. However, up to now, only a few long-term data for this surgical technique are available. METHODS AND PATIENTS: Retrospectively the results of 100 trapezium resections in 72 patients with subsequent joint replacement by a Swanson silicone prosthesis have been followed up over 8...

BACKGOUND: A distraction arthroplasty of the trapeziometacarpal joint was introduced by Bufalini and Perugia for the treatment of the early stages of carpometacarpal osteoarthritis. Our retrospective study presents the results of this technique. Thereby, a tendon graft anchored to the distal second metacarpal is fixed at the base of the first metacarpal, keeping it in distraction. MATERIAL AND METHODS: 10 distraction arthroplasties were performed in 9 patients with carpometacarpal osteoarthritis stage I and II of the thumb after unsuccessful conservative therapy...

Plants, regenerated from callus cultures of sugarcane (Saccharum officinarum L.) clone IJ76-316, originated through somatic embryogenesis. Callus cultures were established from primordial leaves and apical meristems on Murashige and Skoog medium (MS) supplemented with 3 mg 1(-1) 2,4-dichlorophenoxy acetic acid and 100 ml 1(-1) coconut water (MSC3). Nodular calli formed within 2 weeks of culture. Calli were maintained on MSC3 medium by transfer every 3 to 4 weeks. Somatic embryogenesis occurred after 10 weeks culture of callus on MSC3 medium...

The hypervalent meat pigment ferrylmyoglobin, MbFe(IV)═O, characteristic for oxidatively stressed meat and known to initiate protein cross-linking, was found to be reduced by hydrogen sulfide to yield sulfmyoglobin. Horse heart myoglobin, void of cysteine, was used to avoid possible interference from protein thiols. For aqueous solution, the reactions were found to be second-order, and an apparent acid catalysis could be quantitatively accounted for in terms of a fast reaction between protonated ferrylmyoglobin, MbFe(IV)═O,H(+), and hydrogen sulfide, H2S (k2 = (2...

The combination of high-performance thermoplastic poly(ether ether ketone) (PEEK) with inorganic fullerene-like tungsten disulfide (IF-WS(2)) nanoparticles offers an attractive way to combine the merits of organic and inorganic materials into novel polymer nanocomposite materials. Here, we report the processing of novel PEEK/IF-WS(2) nanocomposites, which overcome the nanoparticle agglomerate formation and provide PEEK-particle interactions. The IF-WS(2) nanoparticles do not require exfoliation or modification, making it possible to obtain stronger, lighter materials without the complexity and processing cost associated with these treatments...

BACKGROUND: The aim of our study was twofold. The first was to investigate the optimum position of the elbow while measuring grip endurance. The second was to investigate the optimum position of the elbow while measuring peak grip strength. The American Society of Hand Therapists advocate estimation of grip strength with the elbow flexed at 90 degrees with the subject in the sitting position . As far as we are aware, there have been no reports in English literature regarding studies done to evaluate the position of the elbow while measuring grip endurance...

The phosphine oxide Cyanex 921 (tri-n-octylphosphine oxide) was found to be a very efficient extradant for gold from aurocyanide aqueous solutions. A system comprising a microcolumn packed with this new reagent was developed for the separation and enrichment of gold. Because of the high selectivity of the developed system it is possible to analyze gold in the presence of an excess of other metals and/or in high ionic strengh solutions.

Background. Since 1980's, shoulder arthroplasty has become more oftenly performed procedure, and for severe comminuted fractures of proximal humerus (fou r- fragmented fractures, according to Neer's classification) has become first - line therapeutic option. At the beginnig of 90's, contemporary prinicples of shoulder arthroplasty were introduced. It is assumed that 4 mechanical parameters, i.e. range of motion, joint stability, strengh and smoothness of prosthesis components contribute to shoulder function, and we sholud reach toward their reconstruction during surgical procedure...

Since 1990, when we had found the solutions about the oval of the face and the neck problems by the vertical lift, our whole attention was focused on the midface. We have been through the "cheek lift", high SMAS incision. We followed Oscar Ramirez and Richard Anderson in the subperiosteal undermining of the mid face under endoscopic control by a buccal and temporal incision. The actual technic made possible by Paul Tessier's work who initiated the subperiosteal undermining and Oscar Ramirez who initiated the endoscopy...

Spheroid body myopathy is a rare illness classified in the group of the congenital myopathies as a desmin-related neuromuscular disorder, presenting dominant autosomical origin with the beginning of the symptoms in the adult phase. We report on a seven years old girl with facial paresia, generalized muscular hypotrophy and hypotony, generalized deep areflexia, proximal upper and lower limbs muscular strengh and distal upper limbs grade 3 and distal lower limbs grade 1. Needle electromyography evidenced increased conscription and potentials of motor unit of short duration and low amplitude, characterizing a myopathic standard...

30 female soccer-national-players were examined sport-orthopedically in a yearly sport-medical examination. Beside the anamnesis, a clinical and manual-therapeutic examination took place with it, just as an isokinetic-strengh-performance-diagnostics of the thight-musculature. The averaged age of the players amounted to 23.6 +/- 3.6 years, the mean value for the BMI amounted 22.2 +/- 1.34 kg/m (2). The examination shows which injuries and overload-troubles appear at lady-soccer-national-players. The most frequent injuries represented band-capsule-damages and muscle strain...

In this work, the feasibility of employing Cyanex 923 as an extractant into the non-cerium REE (rare earth elements) impurity analysis of high-purity cerium oxide was investigated. Through investigations on the choice of the extraction medium, the optimium extraction acidity, matrix Ce4+ effect on the non-cerium REE ion extraction, the optimium extractant concentration and suitable extracting time, and oscillation strengh, it was found that when the phase ratio was at 1:1 and the acicidity was about 2% H2SO4, by gently shaking by hand for about 2 min, 10 mL of 30% Cyanex 923 could not extract even for a 20 ng amount of non-cerium REE3+ ions...

The release of dextromethorphan hydrobromide from matrices containing hydroxypropylmethyl cellulose (HPMC K100LV) and methacrylic acid copolymer (Eudragit L100-55) has been evaluated at different ratios of the polymers. The physicochemical properties (including weight, thickness, crushing strengh, friability and disintegration time) were also determined at 1000, 2000 and 4000 p compression forces. No significant differences in weight uniformity and thickness values were observed between the different formulations...

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No abstract text is available yet for this article.

In 76 patients with various pathologies of the nervous system accompanied with the pain syndrome, cutaneous electric stimulation was used for analgesia. The optimal effect was attained by proper positioning of the electrodes, use (as usual) of the monopolar method of the stimulation simultaneously in two sites, and maintenance of the definite parameters of the electric current (rectangular impulse duration 0.1 to 0.2 msec, frequency 60 to 70 o. p. s., current strengh 30 to 50 mA). A prolonged analgesic effect depended little on the disease entity: it was the duration of the pain syndrome that was the main factor predetermining the degree of the analgesic effect...

The effect of antibiotic colon preparation on the tensile strength and morphologic appearance of colonic anastomoses has been investigated in dogs. Preparation with preoperative kanamycin did offer a slight benefit over mechanical bowel cleansing. The addition of erythromycin and kanamycin to the preoperative bowel preparation significantly (p less than 0.001) improved the mean tensile strengh of the healing colonic anastomosis. Continuation of erythromycin and kanamycin for one week postoperatively almost doubled the mean tensile strength of the healing anastomosis...

Contractile activity was recorded from isolated canine ventricular muscle exposed to acetylstrophanthidin (AS), 0.5 to 2 X 10(-7) g/ml. Development of the positive inotropic effect of AS was accompanied by the appearance of aftercontractions (AC) coupled to the driven responses. The amplitudes of AC increased with the number of preceding beats. Test beats occurring during the ascending limb of AC were potentiated and the potentiation increased with the amplitude of the AC. Beats falling during the descending limb decreased in strength as the amplitude of the AC increased...