Effect of cross exercise on quadriceps acceleration reaction time and subjective scores (Lysholm questionnaire) following anterior cruciate ligament reconstruction

Abstract Background Anterior cruciate ligament (ACL) injury or reconstruction can cause knee impairments and disability. Knee impairments are related to quadriceps performance – accelerated reaction time (ART) – and disability to performance of daily living activities which is assessed by questionnaires such as the Lysholm knee score. The purposes of this study were to investigate the effect of cross exercise, as supplementary rehabilitation to the early phase of ACL reconstruction: a) on quadriceps ART at the angles 45°, 60° and 90° of knee flexion and, b) on the subjective scores of disability in ACL reconstructed patients. Methods 42 patients who underwent ACL reconstruction were randomly divided into 3 groups, two experimental and one control. All groups followed the same rehabilitation program. The experimental groups followed 8 weeks of cross eccentric exercise (CEE) on the uninjured knee; 3 d/w, and 5 d/w respectively. Quadriceps ART was measured at 45°, 60° and 90° of knee flexion pre and nine weeks post-operatively using an isokinetic dynamometer. Patients also completed pre and post operatively the Lysholm questionnaire whereby subjective scores were recorded. Results Two factor ANOVA showed significant differences in ART at 90° among the groups (F = 4.29, p = 0.02, p Significant differences were also found in the Lysholm score among the groups (F = 4.75, p = 0.01, p Conclusion CEE showed improvements on quadriceps ART at 90° at a sequence of 3 d/w and in the Lysholm score at a sequence of 3 d/w and 5 d/w respectively on ACL reconstructed patients.</p

Effects of experimental challenge of ewes with Mannheimia haemolytica on subsequent milk composition

The objective was to describe the physicochemical changes during the early phase of subclinical mastitis and to associate them with pathological findings. A Mannheimia haemolytica strain was deposited into one teat duct of 25 ewes and the clinical, bacteriological, cytological, physicochemical (pH, milk composition), gross-pathological and histological findings were subsequently recorded. The organism was consistently isolated from samples of teat duct material (140/150) but not from mammary secretion (50/150). California Mastitis Test (CMT) scores increased (> 1) and remained high (143/150 samples) after challenge; polymorphonuclear neutrophils (PMN) predominated in milk films, but the proportion of lymphocytes and macrophages progressively increased. Increased pH values (> 7.0) were recorded in the mammary secretion from the challenged side. Furthermore, content of fat, total proteins and lactose therein decreased markedly. Histological changes (leucocytic infiltration, destruction of epithelial cells) were observed in the mammary parenchyma of the ewes. The present results confirm that the reduction of milk constituents is the effect of cellular damage and can occur soon after infection

Achievement goals and self-talk in physical education: The moderating role of perceived competence

Self-talk plays a key role in performance and self-regulation. One of the antecedents that may influence individual's self-talk are achievement goal orientations. Three studies of 628, 313 and 1,169 participants were conducted to examine the relationships between positive and negative self-talk, perceived competence and achievement goals using two theoretical models of achievement goals. The participants completed the Automatic Self-Talk Questionnaire for Sports, the Task and Ego Orientation in Physical Education, the physical self-perception profile, and the Achievement Goal Questionnaire-Revised. The results revealed additive and interactive effects of achievement goals and perceived competence on students' positive and negative self-talk. Overall, the results stressed the potential role of achievement goals and perceived competence as personal factors that influence students' self-talk

Sonochemical degradation of ofloxacin in aqueous solutions

Summarization: The use of low frequency (20 kHz), high energy ultrasound for the degradation of the antibiotic ofloxacin in water was investigated. Experiments were performed with a horn-type ultrasound generator at varying applied power densities (130–640 W/L), drug concentrations (5–20 mg/L), hydrogen peroxide concentrations (0–100 mM) and sparging gases (air, oxygen, nitrogen and argon). In general, conversion (which was assessed following sample absorbance at 288 nm) increased with increasing ultrasound energy and peroxide concentration and decreasing initial drug concentration. Moreover, reactions under an argon atmosphere were faster than with diatomic gases, possibly due to argon's physical properties (e.g. solubility, thermal conductivity and specific heat ratio) favoring sonochemical activity. Overall, low to moderate levels of ofloxacin degradation were achieved (i.e. it never exceeded 50%), thus indicating that radical reactions in the liquid bulk rather than thermal reactions in the vicinity of the cavitation bubble are responsible for ofloxacin degradation.Presented on: Water Science and Technolog

Sonolytic degradation of diclofenac and ofloxacin in aqueous solutions

Μη διαθέσιμη περίληψηNot available summarizationΠαρουσιάστηκε στο: Xenobiotics in the Urban Water Cycl

Cross-community context management in Cooperating Smart Spaces

International audienceRecently, social networks have become the most prevalent IT paradigm, as the vast majority of Internet users maintain one or multiple social networking accounts. These accounts, irrespectively of the underlying service, contain rich information and data for the owner's preferences, social skills, everyday activities, beliefs and interests. Along with these services, the computation, sensing and networking capabilities of the state of the art mobile and portable devices, with their always-on mode, assist users in their everyday lives. Thus, the integration of social networking services with current pervasive computing systems could provide the users with the potential to interact with other users that have similar interests, preferences and expectations; and in general, the same or similar context, for limited or not time periods, in order to ameliorate their overall experience, communicate, socialise and improve their everyday activities with minimal effort. This paper introduces a cross-community context management framework that is suitable for Cooperating Smart Spaces, which couple the advantages of pervasive computing and social networking. This framework goes beyond the state of the art, among others, in that cross-community context from a multitude of sources is collected and processed to enhance the end user experience and increase the perceived value of the services provide

Facilitating Conservation and Bridging Gaps for the Sustainable Exploitation of the Tunisian Local Endemic Plant Marrubium aschersonii (Lamiaceae)

In the frame of conservation and sustainable utilization of neglected and underutilized phytogenetic resources, this study produced for the first time a detailed ecological profiling for the local Tunisian endemic Marrubium ascheronii (Lamiaceae) using Geographical Information Systems and open-source data. This profile was used to illustrate the abiotic environmental conditions of its wild habitats; the profile facilitated the examination of the effect of temperature on its seed germination and may inform species-specific guidelines for its cultivation in man-made environments. With effective seed propagation firstly reported herein (68.75% at 20 &deg;C), species-specific in situ conservation efforts and ex situ conservation or sustainable exploitation strategies were enabled for M. aschersonii. The first-reported molecular authentication (DNA barcoding) of M. aschersonii may facilitate its traceability, allowing for product design. This study also reports for the first time the effects of chemical and integrated nutrient management (INM) fertilizers on the growth and pilot cultivation of M. aschersonii seedlings, with the latter being advantageous. This multidisciplinary approach has bridged important research gaps that hindered the conservation efforts and/or the sustainable exploitation for this local endemic plant of Tunisia. Based on all the above, we re-evaluated and updated the feasibility and readiness timescale for sustainable exploitation of M. aschersonii in the medicinal-cosmetic, agro-alimentary and ornamental-horticultural sectors

DNA Barcoding, GIS-Facilitated Seed Germination and Pilot Cultivation of Teucrium luteum subsp. gabesianum (Lamiaceae), a Tunisian Local Endemic with Potential Medicinal and Ornamental Value

In the context of plant conservation and sustainable use of unique neglected and underutilized phytogenetic resources, this study focused on the Tunisian local endemic Teucrium luteum subsp. gabesianum (Lamiaceae). Using Geographical Information Systems and online databases, detailed taxon-specific ecological profiling was produced for the first time, which illustrated the temperature and climate conditions in its wild habitats and facilitated the investigation of how temperature affects its seed germination, thus making its cultivation in anthropogenic environments possible. Following the seed propagation first reported herein (77.5&ndash;81.25% at temperatures between 15 and 25 &deg;C), species-specific in situ and ex situ conservation efforts or sustainable exploitation strategies can be enabled. This study also reported for the first time how chemical and integrated nutrient management (INM) fertilizers affect the growth and pilot cultivation of its seedlings (INM more advantageous). The firstly-reported herein DNA barcoding may enable its traceability, allowing future product design. The multidisciplinary approach followed has paved the way to bridge important research gaps hindering conservation efforts and/or the sustainable exploitation of this local Tunisian endemic plant to date. Based on the aforementioned results, the feasibility and readiness timescale for its sustainable exploitation was overviewed and re-evaluated herein, upgrading (&gt;two-fold) its potential value for the medicinal-cosmetic, agro-alimentary, and ornamental-horticultural sectors