Language And Communication: An Introduction To Approaches To Meaning And Text Analysis

This paper explores the concept of language and communication. It gives an exposition to the study of meaning as it diachronically investigates the theories and approaches to meaning. The crux of the study is that language is central to linguistic communication. It explains concept of meaning in language with the various theories of meaning, such as the traditional referential, ideational, behavioural, and contextual theories of meaning. It also examines some modern theoretical developments on meaning. It carries out the pragmatics and critical discourse analysis of some selected texts to demonstrate the application of some of the approaches to meaning in Language. It concludes on the ground that an understanding of approaches to meaning in language would enhance the development of knowledge and promote successful communication in various situations.     &nbsp

Exploring the role of wearable technology in sport kinematics and kinetics: a systematic review

The aim of this review was to understand the use of wearable technology in sport in order to enhance performance and prevent injury. Understanding sports biomechanics is important for injury prevention and performance enhancement and is traditionally assessed using optical motion capture. However, such approaches are limited by capture volume restricting assessment to a laboratory environment, a factor that can be overcome by wearable technology. A systematic search was carried out across seven databases where wearable technology was employed to assess kinetic and kinematic variables in sport. Articles were excluded if they focused on sensor design and did not measure kinetic or kinematic variables or apply the technology on targeted participants. A total of 33 articles were included for full-text analysis where participants took part in a sport and performed dynamic movements relating to performance monitored by wearable technologies. Inertial measurement units, flex sensors and magnetic field and angular rate sensors were among the devices used in over 15 sports to quantify motion. Wearable technology usage is still in an exploratory phase, but there is potential for this technology to positively influence coaching practice and athletes’ technique

Manual In-Line Stabilization of the Cervical Spine Increases the Rate of Difficult Oro-Tracheal Intubation in Adults - A Randomized Controlled Trial

Background: Patients with traumatic brain injury present with loss of consciousness andsuspected cervical fracture. The aim of this study was to determine the rate of difficult orotracheal intubation in surgical patients undergoing various procedures when manual in-line neck immobilization technique was applied. Methods: This was a randomized prospective study at the Lagos University Teaching Hospital. A total of 100 patients were enrolled into the study and were allocated into 2 groups of either Manual In-Line Stabilization (MILS) or Early Morning Sniffing position (EMSP) techniques during intubation. Successful or unsuccessful intubations within 30secs, as well as time to successful intubation were the outcome measures. Results: The mean ± SD intubation time for successful intubation was similar in both groups (MILS=17.9±7.7 seconds, EMSP=14.6±6.6 seconds (p=0.359)).There were more failed intubations in the MILS group (27%) and (2%) in the EMSP group (p=0.001). Conclusion: The study showed that patients who had MILS had more failed intubations than those that were intubated with the EMSP technique. With this level of failed intubations there is need for provision of difficult airway laryngoscopic adjuncts for patients with diagnosed cervical fracture and uncleared cervical injury who require orotracheal intubation.Key Words: Manual inline stabilization, Cervical spine injury, Orotracheal intubation, Difficult intubatio

Prevalence and Antibiotic Susceptibility Pattern of Staphylococcus Aureus in Clinical Specimens

The present study was carried out to determine the prevalence of Staphylococcus aureus in clinical samples and their susceptibility pattern to antibiotics. Standard microbiological and biochemical methods were used to screen 155 clinical specimens comprising of sputum, wound, urine and high vaginal swabs for S .aureus. Twenty eight (28) isolates was obtained from these samples. Antibiotic susceptibility results shows high percentage of sensitivity to gentamicin (89%,) azithromycin (89%), pefloxacin (79%)  followed by erythromycin (68%) ciprofloxacin (61%) streptomycin (61%)and sparfloxacin (54%). A high resistance was recorded for cotrimaxazole (90%), amoxycillin (88%), ampicillin (73%), tetracycline (65%), cefuroxime and cephalexin (40%) each. Key words: Staphylococcus aureus, antibiotic susceptibility, prevalence, resistance

Microbial Quality of Public Swimming Pools in Lagos

The microbial quality of some public swimming pools in Lagos State, Nigeria was investigated to determine possible risks of infections to swimmers. Ten swimming pools (Pools AJ) were investigated for their microbial and physico-chemical qualities. The pH of the pools ranged from 5.24-8.71 and the residual chlorine ranged from 0.01-0.07. Water samples from the pools were cultured on differential and selective media. The microbial loads varied with different swimming pools. The fungal population ranged from 0-4.7× 10 4 cfu ml-1, while the bacterial population ranged from 0-1.12 x 10 5 cfu ml-1. Eight bacterial isolates were obtained and identified using Microbact 24E kit. Fungal isolates (6) were identified by microscopy, Gram’s staining and chloramphenicol test. The isolates include Aeromonas hydrophila (4), Burkolderia pseudomallei (2), Serratia marcescens (1), Enterobacter agglomerans (1), Candida albicans (3), Saccharomyces spp.(2) and Aspergillus flavus (1). Antifungal sensitivity test showed 50% susceptibility to nystatin and 50% resistance to voriconazole, while the bacteria were resistant to most of the antibiotic tested. The Multiple Antibiotics Resistance (MAR) index for the isolates ranged from 0.125 to 1.000. The feedback from the questionnaires administered, showed that unhygienic practices and maintenance of pools could contribute to low levels of swimming pool water quality. The high microbial loads and the types of microorganisms isolated from the pools show that contaminated swimming pools can constitute a serious public health hazard to the users

Accessory gene regulators and virulence genes associated with the pathogenicity of Staphylococcus aureus from clinical and community settings in Lagos, Nigeria

Staphylococcus aureus is a prominent pathogen that causes serious community and hospital-acquired infections globally. Its pathogenicity is attributed to a variety of secreted and cell surface associated proteins that are modulated by the quorum-sensing accessory gene regulator (agr) system. In this study, we investigated the presence of toxin genes and agr involved with S. aureus from clinical samples and apparently healthy individuals. Unequivocal identification of the isolates was obtained with the Vitek 2 system. We screened 70 clinical (CL) and 22 community (C) S. aureus strains for the methicillin resistance (mecA) gene, agr and superantigens (SAg) (enterotoxins and toxic shock syndrome toxin-1) using PCR techniques. A total of 12 clinical isolates were classified as methicillin-resistant S. aureus (MRSA); 89 isolates belonged to one of the four agr groups (agr1-4), and 3 isolates were non-typeable. Of the agr groups, agr1 was the most prominent and mostly consisted of isolates from pus/wounds. The methicillin-susceptible S. aureus (MSSA) isolates were distributed within the four agr groups while MRSA strains were restricted to agr1 and agr3. The most common enterotoxin gene, sei, was likewise more prevalent in MSSA strains than in MRSA strains, where sea predominated. The co-existence of two or more enterotoxins was confirmed in 40% of the isolates. sea occurred through all the agr groups except agr3 and sei was not found in agr1 and agr4. The toxic shock toxin (tst) gene was detected in six MSSA. These findings suggest that MSSA may cause more lethal infections than MRSA because of the increased frequency of toxic genotypes seen in MSSA strains. Significance: • Isolates in the agr1,3 groups had more SAg toxin genes, whereas isolates in the agr4 groups possessed more tst genes. • The MSSA isolates contained higher proportions of virulence genes than MRSA. • The clinical implications of this discovery include that MSSA may cause more lethal infections than MRSA due to the greater number of toxigenic genotypes discovered

Effect of Mulching Materials and Spacing on Growth and Yield of Two Varieties of Chilli Pepper (Capsicum annum L.) Planted in Experimental Plot in Jericho area of Ibadan Northwest Local Government, Oyo State, Nigeria

Mulching is covering the soil surface around the plants with organic or synthetic material to create favorable conditions for plant growth and proficient crop production. Hence, the objective of this paper is to investigate the Effect of Mulching Materials and Spacing on Growth and Yield of Two Varieties of Chilli Pepper (Capsicum annum L.) Planted in Experimental Plot in Jericho area of Ibadan Northwest Local Government, Oyo State, Nigeria using appropriate standard techniques. The results obtained from the experiment showed no significant difference in the growth parameters of both varieties except in the fruit yield data of the local variety assessed. Treatments which recorded highest values for hybrid and local variety on plant height, stem diameter, number of leaves, number of flowers and number of fruits were T2(27.7cm), T2(1.2mm), T2(64.0),  T2(5.00) and T2(17.0) while treatments which recorded least were T4(20.3cm), T4(0.7mm),T5( 20), T4 ( 1.00)  T3 (0.00) respectively. In conclusion, T1 (30x75cm+plantain leaves), hybrid variety recorded the best performance while for local variety, T2 (60cmx75cm+plantain leaves) recorded highest than other treatments assessed. It was therefore recommended that spacing of 30cmx75cm and plantain leaves should be adopted for the growth and yield of Capsicum annum hybrid varieties while 60x75cm and plantain leaves can be used for local varieties in the study area

CARRIAGE OF MULTIDRUG RESISTANT ENTEROCOCCUS FAECIUM AND ENTEROCOCCUS FAECALIS AMONG APPARENTLY HEALTHY HUMANS

Enterococci are indigenous flora of the gastro-intestinal tracts of animals and humans. The recent years have witnessed increased interest in two major species, E. faecium and E. faecalis, because of their ability to cause serious infections and their intrinsic resistance to antimicrobials. In this study, human faecal samples were processed to determine the frequency of occurrence of E. faecium and E. faecalis and evaluate the susceptibility of the isolates to antibiotics. One hundred faecal samples were collected from apparently healthy individuals and 73 Enterococcus were phenotypically identified using conventional methods. The susceptibility profiles of the isolates to 9 different antibiotics were determined using disk diffusion method and the results were interpreted according to Clinical and Laboratory Standards Institute (CLSI) guidelines. Sixty-five isolates were differentiated into 36 (55.4%) E. faecium and 29 (44.6%) E. faecalis. No dual colonization by the two species was observed and isolation rate was independent of sex. Antimicrobial susceptibility testing revealed high occurrence of several different combinations of resistant patterns. The 65 isolates were resistant to ceftriaxone, cefuroxime and ceftizoxime. Enterococcus faecium exhibited resistance to erythromycin (88.9%), gentamicin (77.8%), amoxicillin-clavulanate (63.9%), ofloxacin (44.4%), teicoplanin (19.4%) and vancomycin (16.7%). Enterococcus faecalis showed the least resistance to vancomycin (13.8%) and teicoplanin (27.7%). The high prevalence of resistant strains in this study can be attributed to misuse of drugs. This can be curtailed by stopping the sale of antibiotics across the counter and creating awareness among the populace by Government and Health Agencies on the consequences of unregulated antibiotic use

Differential cartilaginous tissue formation by human synovial membrane, fat pad, meniscus cells and articular chondrocytes

Objective: To identify an appropriate cell source for the generation of meniscus substitutes, among those which would be available by arthroscopy of injured knee joints. Methods: Human inner meniscus cells, fat pad cells (FPC), synovial membrane cells (SMC) and articular chondrocytes (AC) were expanded with or without specific growth factors (Transforming growth factor-betal, Fibroblast growth factor-2 and Plate let-derived growth factor bb, TFP) and then induced to form three-dimensional cartilaginous tissues in pellet cultures, or using a hyaluronan-based scaffold (Hyaff(R)-11), in culture or in nude mice. Human native menisci were assessed as reference. Results: Cell expansion with TFP enhanced glycosaminoglycan (GAG) deposition by all cell types (up to 4.1-fold) and messenger RNA expression of collagen type II by FPC and SMC (up to 472-fold) following pellet culture. In all models, tissues generated by AC contained the highest fractions of GAG (up to 1.9 were positively stained for collagen type II (specific of the inner avascular region of meniscus), type IV (mainly present in the outer vascularized region of meniscus) and types I, III and VI (common to both meniscus regions). Instead, inner meniscus, FPC and SMC developed tissues containing negligible GAG and no detectable collagen type II protein. Tissues generated by AC remained biochemically and phenotypically stable upon ectopic implantation. Conclusions: Under our experimental conditions, only AC generated tissues containing relevant amounts of GAG and with cell phenotypes compatible with those of the inner and outer meniscus regions. Instead, the other investigated cell sources formed tissues resembling only the outer region of meniscus. It remains to be determined whether grafts based on AC will have the ability to reach the complex structural and functional organization typical of meniscus tissue. (C) 2006 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights rese