596 research outputs found
Kemampuan Mengenal Pola Abcd dengan Media Gambar di Taman Kanak-kanak PGRI Karya Nilam Ketapang
This research is motivated in a child's cognitive ability to know ABCD-ABCD pattern is still not optimal development as the children can not distinguish a pattern ABCD-ABCD, children may not be able to sort the ABCD-ABCD pattern, children may not be able to complete the pattern ABCD-ABCD. Learning activities that teachers do not show the maximum results, especially in improving cognitive abilities in a familiar pattern of ABCD-ABCD. This research is a form of action research with descriptive methods. Subjects were children who totaled 15 children. Based on the research that has been done and through the results obtained after the analysis of the data held, in general can be drawn a conclusion that: 1) Planning learning include: formulating the Core Competencies, Basic Competence, Indicators, learning outcomes, 2) Implementation of the lesson, including: implement environmental footing, footing before playing, while playing a foothold, footing after the play. The planning that teachers do with the criteria of "good". 3) the child's response to learning include: a) Children sort the ABCD-ABCD pattern, b) Children complement ABCD-ABCD pattern, c) Child find ABCD-ABCD pattern
Sleep, sedentary time, and physical activity in heart failure subtypes: Multi-ethnic study of Atherosclerosis (MESA)
INTRODUCTION: Previous studies have examined the associations between physical activity (PA), sedentary time (ST), and sleep on the risk of heart failure (HF). The primary aim of this study was to examine PA, ST, and sleep quality (SQ) in those diagnosed with preserved ejection fraction HF (HFpEF) and reduced ejection fraction HF (HFrEF). The secondary aim of this study was to examine these relationships in those with and without HF, independent of sub-type.
METHODS: The Multi-Ethnic Study of Atherosclerosis (MESA) collected data from 6,814 adults from a diversified cohort who range in age from 45 to 84. Subjects were classified with the following HF subtypes: HFpEF (ejection fraction ≥ 50%) or HFrEF (ejection fraction ≤ 40%). A total of 178 participants reported or were diagnosed with HF (HFpEF=74, HFrEF=69). Continuous PA and ST variables were created from self-reported minutes per week and SQ was reported via questionnaire.
RESULTS: No significant differences were found when examining the associations of ST and SQ between HF sub-types. However, an association of PA between subtypes was found to be significant. Those with HFrEF reported 401 (P
CONCLUSIONS: Our findings suggest that PA significantly differs between HF subtypes. When examining those with and without HF, those with HF reported significantly less TPAV, light-, moderate-, and vigorous-intensity PA, and significantly more ST. Future studies with greater power and objectively measured PA, ST, and SQ data may improve both internal and external validity of HF research
Rapid tests and urine sampling techniques for the diagnosis of urinary tract infection (UTI) in children under five years: a systematic review
Background: Urinary tract infection (UTI) is one of the most common sources of infection in children under five. Prompt diagnosis and treatment is important to reduce the risk of renal scarring. Rapid, cost-effective, methods of UTI diagnosis are required as an alternative to culture. Methods: We conducted a systematic review to determine the diagnostic accuracy of rapid tests for detecting UTI in children under five years of age. Results: The evidence supports the use of dipstick positive for both leukocyte esterase and nitrite (pooled LR+ = 28.2, 95% CI: 17.3, 46.0) or microscopy positive for both pyuria and bacteriuria (pooled LR+ = 37.0, 95% CI: 11.0, 125.9) to rule in UTI. Similarly dipstick negative for both LE and nitrite (Pooled LR- = 0.20, 95% CI: 0.16, 0.26) or microscopy negative for both pyuria and bacteriuria (Pooled LR- = 0.11, 95% CI: 0.05, 0.23) can be used to rule out UTI. A test for glucose showed promise in potty-trained children. However, all studies were over 30 years old. Further evaluation of this test may be useful. Conclusion: Dipstick negative for both LE and nitrite or microscopic analysis negative for both pyuria and bacteriuria of a clean voided urine, bag, or nappy/pad specimen may reasonably be used to rule out UTI. These patients can then reasonably be excluded from further investigation, without the need for confirmatory culture. Similarly, combinations of positive tests could be used to rule in UTI, and trigger further investigation
Assessing the Degree of Food Insecurity among Farming Households: Evidence from the Central Region of Ghana
This study seeks to determine the level of food insecurity among farming household in the Central Region of Ghana. A multistage sampling technique was used to select the respondents that were interviewed using a structured questionnaire. In all 240 households were interviewed for the study (i.e., 120 farming households in each of the Forest Communities and Coastal Communities). Data was obtained from 1690 individuals for the analysis of the food security status of the households. The empirical results reveal that majority of the respondents were food insecure. Though majority of the households were food insecure, the level of food insecurity was not severe. The months of April and May are the periods in which households experience severe food shortage. The immediate food insecurity coping strategies households adopt when faced with food insecurity are eating less preferred food, food rationing and skipping meal within a day. Most of the food insecurity coping strategies used by farming households are moderate, and only employed to temporarily minimize the impact of food insecurity. These results have implications for agricultural food policy in developing countries. Key words: Food insecurity, farming households, copping strategies, Ghan
In vitro and in vivo tissue harmonic images obtained with parallel transmit beamforming by means of orthogonal frequency division multiplexing
Observed cumulative time delay between second harmonic and fundamental component of pressure wave fields propagating through ultrasound contrast agentss
Several studies on the propagation velocity of pressure wave fields through ultrasound contrast agents (UCAs) have been reported in the literature. However, the variation of propagation velocity between the fundamental and the second harmonic component generated during the propagation of ultrasound through UCAs has, to our knowledge, not been studied yet. To this scope, dedicated transmission and backscattering measurements of pressure wave fields propagating through SonoVue and Definity contrast agents, are analyzed. Results show the occurrence of a cumulative delay between the time signals related to the second harmonic and fundamental component, suggesting a smaller propagation velocity for the second harmonic as compared to the fundamental component. Moreover, this time delay increases with increasing UCA concentration and propagation path length of ultrasound trough microbubbles, depends on mechanical index and frequency, and, most importantly, is not observed in the absence of UCAs. These results may be relevant to contrast-enhanced ultrasonography, opening up to new possibilities to increase contrast-to-tissue ratios and to quantify UCA concentration
Contractual approach to optimising risk sharing: A quantitative study of the multidimensional nature of risk in private provision of road infrastructure
In 2009 and 2010, we conducted an international survey to identify the extent to which risk-sharing in tollroad projects procured under the public-private-partnership (PPP) method and the structures of PPP concession contracts lead to the value for money outcome. The survey was conducted using an advanced computer-aided personal instrument technique within which the stated choice methodology was deployed to capture the risk perceptions of contracting parties. Information drawn from the project experience of 101 respondents over 32 countries was used to test the impact of contractual conditions and external institutional variables on their risk preferences, and hence, their choice behaviour in relation to the PPP procurement. The empirical findings affirmed a number of significant relationships that involve the risk preferences of contracting parties: choice of procurement method, contractual conditions, institutional environment, clarity of government’s strategic objectives, property rights, and the way in which risks are shared among contracting parties. We conclude that risk-sharing can be optimised through more equitable risk allocation, better handling of public misperception about the scheme and misperceived social risks associated with ownership transfer, undertaking reforms at the institutional level to make the environment more conducive to PPP investments, and selecting a reputable private partner for a sustainable partnership
Towards dynamic contrast specific ultrasound tomography
We report on the first study demonstrating the ability of a recently-developed, contrast-enhanced, ultrasound imaging method, referred to as cumulative phase delay imaging (CPDI), to image and quantify ultrasound contrast agent (UCA) kinetics. Unlike standard ultrasound tomography, which exploits changes in speed of sound and attenuation, CPDI is based on a marker specific to UCAs, thus enabling dynamic contrast-specific ultrasound tomography (DCS-UST). For breast imaging, DCS-UST will lead to a more practical, faster, and less operator-dependent imaging procedure compared to standard echo-contrast, while preserving accurate imaging of contrast kinetics. Moreover, a linear relation between CPD values and ultrasound second-harmonic intensity was measured (coefficient of determination = 0.87). DCS-UST can find clinical applications as a diagnostic method for breast cancer localization, adding important features to multi-parametric ultrasound tomography of the breast.</p
Inter- and intra-observer variability analysis of completely automated cIMT measurement software (AtheroEdge™) and its benchmarking against commercial ultrasound scanner and expert Readers
The purpose of this study was to evaluate the measurement error and inter- and intra-observer variability of completely off-line automated and semi-automated carotid intima-media thickness (cIMT) measurement software (AtheroEdge™).Two hundred carotid ultrasound images from 50 asymptomatic women were analyzed. AtheroEdge™ was benchmarked against a commercial system (Syngo, Siemens) using automated and semi-automated modes. The measurement error and inter- and intra-observer variability of AtheroEdge™ were tested using three readings.The measurement error of AtheroEdge™ compared to the commercial software was 0.002±0.019. mm (r=0.99) in the automated mode and -0.001±0.004. mm in the semi-automated mode (r=0.99). The measurement error of AtheroEdge™ compared to the mean value of the three expert Readers (cIMT bias) for the automated and semi-automated methods was -0.0004±0.158. mm and -0.008±0.157. mm, respectively. The Figure-of-Merit was 99.8% and 99.9% when compared to the commercial ultrasound scanner (using the automated and semi-automated method, respectively) and was 99.9% and 98.9% when compared to the mean value of the three expert Readers. Regarding inter- and intra-observer variability, the intra-class correlation coefficient of the three independent users using the semi-automated AtheroEdge™ was 0.98.AtheroEdge™ showed a measurement performance comparable to the commercial ultrasound scanner software and the expert Readers' tracings. AtheroEdge™ belongs to a class of automated systems that could find application in processing large datasets for common carotid arteries, avoiding subjectivity in cIMT measurement
Eliminating Fc N-linked Glycosylation and Its Impact on Dosing Consideration for a Transferrin Receptor Antibody-Erythropoietin Fusion Protein in Mice
Erythropoietin (EPO), a hematopoietic growth factor and a promising therapy for Alzheimer’s disease, has low permeability across the blood–brain barrier. The transferrin receptor antibody fused to EPO (TfRMAb-EPO) is a chimeric monoclonal antibody that ferries EPO into the brain via the transvascular route. However, TfRMAbs have Fc-effector function-related adverse effects including reticulocyte suppression. To overcome this, we recently developed an effectorless TfRMAb-EPO fusion protein, designated TfRMAb-N292G-EPO, by eliminating the Fc N-linked glycosylation site at position 292 of the antibody heavy chain. The mutant fusion protein showed enhanced plasma clearance and dramatically reduced plasma concentrations compared with the wild-type (WT) nonmutant fusion protein. This increased clearance of the aglycosylated TfRMAb is expected to increase the injection dose of the mutant fusion protein. To provide a basis for future therapeutic uses of this IgG-neurotrophin fusion protein, the current study aimed to characterize the pharmacokinetic profile of this effectorless TfRMAb-N292G-EPO at different doses following different routes of administration in the mouse. Adult C57BL/6J male mice were injected with a single dose (3, 6, 9, or 20 mg/kg; n = 3–6 per dose) of TfRMAb-N292G-EPO through either the subcutaneous (SQ) or intraperitoneal (IP) route. TfRMAb-N292G-EPO plasma concentrations were determined using an enzyme-linked immunosorbent assay. Mice were sacrificed 24 h after injection, and terminal blood was used for a complete blood count. Brain concentrations in the WT- and mutant fusion protein-treated mice were compared. We observed stark differences in the plasma pharmacokinetics of TfRMAb-N292G-EPO between the IP and SQ routes of administration. Dose escalation from 3 to 20 mg/kg increased the plasma Cmax only 3.5-fold for the SQ route, compared with a 35-fold increase for the IP route. The plasma Cmax was 15.0 ± 2.0, 21.3 ± 4.1, 21.3 ± 6.4, and 52.8 ± 27.9 ng/mL following SQ injection and 288 ± 47, 389 ± 154, 633 ± 194, and 10,066 ± 7059 ng/mL following IP injection for 3, 6, 9, and 20 mg/kg doses, respectively. The plasma Cmax following the SQ route was therefore 19- to 190-fold lower than that following the IP route. This finding is consistent with a 31-fold higher apparent clearance following the SQ route compared with the IP route at the highest dose administered. The brain concentrations in the mice treated with a 3 mg/kg dose of the mutant fusion protein were lower than those in the nonmutant WT-treated mice. No reticulocyte suppression was observed at the 3 mg/kg SQ dose of TfRMAb-N292G-EPO. However, reticulocyte suppression increased with an increase in dose and area under the plasma concentration–time curve (AUC) for both the IP and SQ routes. Overall, elimination of Fc N-linked glycosylation, to mitigate TfRMAb effector function side effects, has a profound effect on the plasma exposure of TfRMAb-N292G-EPO at therapeutic as well as high doses (3–20 mg/kg). This effect is more pronounced following SQ injection. The low plasma concentrations of the mutant fusion protein following a 3 mg/kg dose resulted in negligible brain uptake. The beneficial rescue of reticulocyte reduction by the N292G mutation is a function of AUC and is negated at high doses of the N292G mutant
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