1,307 research outputs found

    Haematological and Genotoxic effects of cadmium chloride on Mesopotamichthys sharpeyi

    Get PDF
    The present study investigated Haematological changes in Mesopotamichthys sharpeyi, as well as determination genotoxic effects of cadmium chloride on bunni fish by using 120 fingerlings, fish were distributed randomly into four treatments in addition to control group. Fish in first group treated (T1) with cadmium 0.093mg/L with changing water and added cadmium continuously, fish in the second group treated (T2) with cadmium 0.093mg/L with changing water without adding cadmium, third treatment (T3) with cadmium 0.046mg/L with changing water and adding cadmium continuously, and fourth treatment (T4) with cadmium 0.046mg/L with changing water without adding cadmium. Results of blood picture in T1 and T3 showed a significant reduction in red blood cells count, hemoglobin concentration, packed cell volume values, while the number of white blood cells showed a significant increase in its values. Results showed presence of improvement of clinical and microscopical signs and blood picture in T2 and T4, were changed water aquarium continuously and added cadmium only once compared withT1 and T3. Results of the present study concluded that changing water aquarium in the treatments without adding cadmium led to improvement of health status of fish which increased with the passage of time results of blood picture were almost the same of the control group. It could be concluded from the current study that the adding of cadmium to water aquarium containing bunni fish led to decrease in red blood cells count, hemoglobin and packed cell volume values and increase in micronuclei number

    Localization Enhanced Mobile Networks

    Get PDF
    The interest in mobile ad-hoc networks (MANETs) and often more precisely vehicular ad-hoc networks (VANETs) is steadily growing with many new applications, and even anticipated support in the emerging 5G networks. Particularly in outdoor scenarios, there are different mechanisms to make the mobile nodes aware of their geographical location at all times. The location information can be utilized at different layers of the protocol stack to enhance communication services in the network. Specifically, geographical routing can facilitate route management with smaller overhead than the traditional proactive and reactive routing protocols. In order to achieve similar advantages for radio resource management (RRM) and multiple access protocols, the concept of virtual cells is devised to exploit fully distributed knowledge of node locations. The virtual cells define clusters of MANET nodes assuming a predefined set of geographically distributed anchor points. It enables fast response of the network to changes in the nodes spatial configuration. More importantly, the notion of geographical location can be generalized to other shared contexts which can be learned or otherwise acquired by the network nodes. The strategy of enhancing communication services by shared contexts is likely to be one of the key features in the beyond-5G networks

    Surgeon Personal Factors Associated with Care Strategies in Musculoskeletal Telehealth

    Get PDF
    Background: Most surgeons used, or are currently using telehealth during the SARS-CoV-2 (COVID-19) pandemic. We studied surgeon personal factors associated with relative use of telehealth during the worldwide height of the pandemic. Questions/Purposes: (1) Are there any personal factors/characteristics associated with use and utilization of telehealth? (2) What are surgeon’s perspectives/ opinions with regard to use of telehealth for five common upper extremity conditions in terms of future prospects and viability? Methods: Hand and upper extremity surgeons in the Science of Variation Group (SOVG) were invited to participate in a web-based survey. The first part of the survey focused on surgeon characteristics and work preferences. The second part focused on care strategies during the pandemic and utilization of telehealth. The final part of the survey addressed the care of five common upper extremity conditions during the pandemic. Results: Ninety percent of surgeons used telehealth during the first few months of the pandemic, but only 20% of visits were virtual. A greater percentage of telehealth visits compared to office visits was independently associated with a policy of only seeing people with emergencies in person (RC: 0.64; CI 95%: 0.21 to 1.1; P&lt;0.01). Surgeons found it difficult to reproduce most parts of the physical examination on video, but relatively easy to make a diagnosis, with both ratings associated with less belief that the physical exam is essential. Comfort in offering surgery by video visit was associated with having young children, preference for remote meetings, and less belief that the physical exam is essential. Conclusion: Utilization of, and comfort with, telehealth is related to personal factors and preferences, acceptance of a more limited physical examination in particular. Utilization of early adopters and training to increase comfort with the probabilistic aspects of medicine could facilitate incorporation of telehealth into standard practice.</p

    Structural characterization of wheat starch granules differing in amylose content and functional characteristics.

    Get PDF
    Small-angle X-ray scattering (SAXS) together with several complementary techniques such as differential scanning calorimetry and X-ray diffraction, have been employed to investigate the structural features that give diverse functional properties to wheat starches (Triticum aestivum L.) within a narrow range of enriched amylose content (36-43%). For these starches, which come from a heterogeneous genetic background. SAXS analysis of duplicate samples enabled structural information to be obtained about their lamellar architecture where differences in lamellar spacing among samples were only several tenths of nanometer. The SAXS analysis of these wheat starches with increased amylose content has shown that amylose accumulates in both crystalline and amorphous parts of the lamella. Using waxy starch as a distinctive comparison with the other samples confirmed a general trend of increasing amylose content being linked with the accumulation of defects within crystalline lamellae. We conclude that amylose content directly influences the architecture of semi-crystalline lamellae, whereas thermodynamic and functional properties are brought about by the interplay of amylose content and amylopectin architecture. © 2008, Elsevier Ltd

    Combined Effect of Nano Ferrite and Nano Silica on Properties of Cement Mortar

    Get PDF
    This study investigates the effects of adding nano-ferrite (N.F.) and nano-silica (N.S.) on the mechanical and biological properties of mortar. By assessing four water-to-cement ratios (1-4%), the ideal nanoparticle doses were determined. Results indicated that both N.F. and N.S. significantly increased the mortar\u27s strength at ratios between 1% and 4%, while combinations of N.F. and N.S. improved strength up to 3% and 4% substitution, respectively. The mechanisms of strength enhancement were attributed to nanoparticles acting as fillers and hydration accelerators, which densify the mortar microstructure and promote the production of calcium silicate hydrate (C-S-H) gels. In terms of biological properties, the study examined the antibacterial effects of nano-silica and nano-ferrite. Nano-silica demonstrated greater antibacterial potency against all bacterial strains assessed. Both materials exhibited a stronger antibacterial impact on Gram-positive bacteria (Staphylococcus aureus) compared to Gram-negative bacteria (Escherichia coli), due to differences in cell wall structures. The study emphasizes the importance of optimal nanoparticle dosages and identifies limitations that warrant further research, such as durability and potential downsides at higher concentrations. Despite these challenges, the findings underscore the potential of nanoparticles to enhance mortar performance and suggest promising applications in construction and the development of antibacterial materials. Future research should focus on overcoming these constraints and exploring the practical applications of nanoparticle-enhanced mortar in real-world scenarios

    The Evolution of Ḍād: A Synchronic and Diachronic Analysis of the Emphatic Arabic Ḍād

    Get PDF
    The purpose of this study is to: (1) examine how the original ḍād consonant and its description evolved from how Sibawayh documented it, and (2) discuss the historical context surrounding the distribution of the ḍād across the Arabic-speaking world. The ḍād is one of the most controversial consonants in the Arabic language, and therefore is a fascinating linguistic phenomenon to study. Almost none of the current dialects resemble the probable original variety introduced when the Arabic language was spread throughout the Middle East and North Africa around the birth of Islam. In the course of this study, the phonetics and phonology of the Arabic emphatic consonant ḍād will be analyzed in detail, as well as the broader history of this emphatic across the Arabic-speaking world. Specifically, the historical context surrounding the development of the consonant will be examined. In addition, ideas about both the contact situation surrounding the consonant and factors that may have influenced its present realization will be explored

    HPLC Analysis of Chemical Composition of Selected Jordanian Medicinal Plants and their Bioactive Properties

    Get PDF
    Three medicinal plants grown wild in Jordan, namely Achillea santolina L, Achillea fragrantisimma, Asteriscus graveolens (Forssk.) Less, were extracted with ethyl acetate by continuous shaking at room temperature for three days. The antibacterial activity of the crude extract was evaluated. The extracts were analyzed for their phenolic and flavonoids content by HPLC-PDA. The HPLC analysis of the plant extracts revealed the presence of flavonoids and phenolic compounds in the three plant extracts. Results revealed a strong antibacterial activity of A. graveolens against three bacterial strains (B. subtilis, E. coli, and S.aureus). while A. fragrantissima inhibited the growth of B. subtilis. Bioactivities were attributed mainly to the immense content of phenol-based compounds in plants.University and Al-Quds University for providing facilities, and encouragemen

    Theoretical study on the efficiency of utilization of nanoclay-CFRP composite materials in the root area of wind turbine blades

    Get PDF
    In this study, theoretical calculations were performed to determine the most efficient utilization of nanoclays added as reinforcement for CFRP composite materials used for wind turbine blade manufacture. Four different V39 blade models were created, and numerical simulations by FEA were performed. Glass Fibre Reinforced Polymers (GFRP), whole model made of Carbon Fibre Reinforced Polymers/nanoclay (2%) (CFRPN2), Hybrid Glass and Carbon/nanoclay (2%) (HGCN2) and Hybrid Glass and Carbon/nanoclay (5%) (HGCN5). The targeted part was the joining zone between the root and the blade. The most important finding to emerge from this study is that the modest addition of nanoclay (2%) with carbon fiber reinforced polymer leads to a significant stiffer blade, with a minimal deflection, about 70% lower than GFRP. Furthermore, the HGCN2 model is considered to be safer as it has a lower stress concentration than others (52.84 kN/m2). It can be considered that the probability of failure of the entire root area will be decreased if nanoclay-CFRP hybrid blades are used, yielding higher durability and lower overall costs. These findings contribute to decisions related to materials selection, structural, aerodynamic design and layup schedule choice

    Are Patient Linguistic Tones Associated with Mental Health and Perceived Clinician Empathy?

    Get PDF
    Background:Musculoskeletal specialists have the expertise to distinguish between (1) symptoms that correspond well with observed pathophysiology and (2) disproportionate or incongruent symptoms that may suggest mental and social health opportunities. There is evidence that patient verbal and nonverbal communication can help with this discernment. This study carried this line of research one step further by addressing whether patient linguistic tones, as assessed with use of Linguistic Inquiry and Word Count (LIWC), are associated with symptoms of depression and health anxiety. We also sought associations between both patient and clinician linguistic tones and patient-perceived clinician empathy.Methods:A secondary analysis of transcripts of video and audio recordings of 109 adult patients seeking musculoskeletal specialty care was performed. Patients also completed questionnaires quantifying symptoms of depression (PROMIS [Patient-Reported Outcomes Measurement Information System] Depression computerized adaptive test), self-efficacy when in pain (Pain Self-Efficacy Questionnaire, 2-question version), symptoms of health anxiety (5-item Short Health Anxiety Inventory [SHAI-5]), and perceived clinician empathy (Jefferson Scale of Patient Perceptions of Physician Empathy [JSPPPE]). LIWC was used to detect the relative strength of various emotional tones, cognitive processes, and core drives and needs. Bivariate and multivariable regression analyses sought factors associated with symptoms of depression, symptoms of health anxiety, and patient perception of clinician empathy.Results:After accounting for demographic variables, there were no specific patient linguistic tones (e.g., sadness, positive emotions, negative emotions, anger, and the use of adjectives) associated with health anxiety and symptoms of depression, pain, self-efficacy, and patient-perceived clinician empathy. There were no clinician linguistic tones associated with perceived clinician empathy. There was no relationship between the sum of emotional words and symptoms of depression.Conclusions:Musculoskeletal specialists cannot depend on people experiencing symptoms of psychological distress to verbally express their feelings.Clinical Relevance:Specialists may be more likely to identify important symptoms of psychological distress if they anticipate lower emotional expressiveness and are attentive to specific words, concepts, and mannerisms known to be associated with distress.</p

    Identification and Antibacterial Evaluation of Selected Jordanian Medicinal Plants

    Get PDF
    Dried aerial parts of three medicinal plants grown wild in Jordan, namely Ononis natrix L, Salvia spinosa L. and Salvia verbenace L, were extracted upon soaking with ethyl acetate by continuous shaking at room temperature for three days. The extracts were analyzed for their phenolic and flavonoids content by HPLC-PDA. The HPLC analysis of the plant extracts revealed the presence of flavonoids and phenolic compounds in the three plant extracts. The antibacterial activity of the crude extract was evaluated. The PDA wavelengths range was from 227-347 nm. Bioactivities were attributed mainly to the immense content of phenol-based compounds in plants.Authors wish to acknowledge Mutah University and Al-Quds University for providing facilities, and encouragement
    corecore