31 research outputs found
Nutrients In situ Degradability of Almond Hulls and Cucumber Wastes from Greenhouse
Aims: Information about degradability of nutrients, effective degradability (ED) values and digestion kinetics of agricultural wastes is important for feed manufacturing industry and farmers performing feed mixing practices who currently rely on nutritive values published by research institutions. Almond hull (AH) and cucumber plant (CW) were evaluated for ruminal dry matter (DM), crude protein (CP), acid detergent fiber (ADF) and neutral detergent fiber (NDF) degradation kinetics.
Methodology: Duplicate bags containing 3 g ground raw material each were incubated in the rumen of two ruminally cannulated Assaf rams for 4, 8, 16, 24, 48 and 72 h. Rate and extent of ruminal degradation were estimated.
Results: Significant effects of byproduct type were observed in rapidly soluble and potentially degradable fractions, and degradation rates of DM, CP, ADF and NDF. The rapidly soluble DM, CP, ADF and NDF fractions were 16.10, 15.2, 10.64 and 14.06% for CW, and 7.21, 6.64, 6.00 and 5.62% for AH. The potentially degradable DM, CP, ADF and NDF fractions, respectively, were 55.82, 62.30, 49.40 and 55.09% for CW, and 47.61, 44.26, 46.34 and 48.53% for AH. The DM, CP, ADF and NDF disappearance in CW were higher (P < 0.05) compared to those in AH. Similarly, the effective degradability (ED) of DM, CP, ADF and NDF in AH were higher compared to AH (P < 0.05).
Conclusion: The new data presented in this study could be useful for the purposes of ration formulation and ruminants’ performance. Considering these findings, one can propose using both byproducts, together or separately as part of ruminant rations. It can be introduced in these rations as part of roughage (wheat and barley straw). CW can be incorporated in ruminant rations as part of better quality roughage (legume hay)
Infection Control Measures in Private Dental Clinics in Lebanon
Purpose. Evaluate infection control knowledge, attitude, and practice in Lebanese private dental clinics. Materials and Methods. A survey including 46 questions related to routine safety procedures was sent to 1150 Lebanese dentists between July 1st and 2nd, 2015. The study sample was selected from the database of registered dentists based on a proportional random sampling ensuring equitable representation of the 5 geographic regions of Lebanon. A subset of 29 questions was used to generate an overall score of compliance (excellent, good, fair, and poor). Comparisons according to gender, type, region, and years of practice were performed. Results. 417 dentists returned the completed questionnaires. 96% expressed concern about infection transmission, 90.6% were vaccinated against Hepatitis B, and 61.8% asked routinely about patients medical history. Only 43% used protective eyewear. Although most dentists (65%) used autoclaves, dry heat was still used. Significant correlations were found between gender and use of personal protective equipment. Less compliance was shown by clinicians with fewer years of experience. In the overall compliance questionnaire, the mean percentage of correct answers was roughly 54% with <5% of the practitioners scoring “excellent.” Conclusions. The study found inadequacy of compliance in private Lebanese dental clinics necessitating improved educational training and sustained monitoring by regulatory bodies
Linkage disequilibrium fine mapping of quantitative trait loci: A simulation study
Recently, the use of linkage disequilibrium (LD) to locate genes which
affect quantitative traits (QTL) has received an increasing
interest, but the plausibility of fine mapping using linkage
disequilibrium techniques for QTL has not been well studied. The main
objectives of this work were to (1) measure the extent and pattern of
LD between a putative QTL and nearby markers in finite populations and
(2) investigate the usefulness of LD in fine mapping QTL in simulated
populations using a dense map of multiallelic or biallelic marker
loci. The test of association between a marker and QTL and the power
of the test were calculated based on single-marker regression
analysis. The results show the presence of substantial linkage
disequilibrium with closely linked marker loci after 100 to 200
generations of random mating. Although the power to test the
association with a frequent QTL of large effect was satisfactory, the
power was low for the QTL with a small effect and/or low
frequency. More powerful, multi-locus methods may be required to map
low frequent QTL with small genetic effects, as well as combining both
linkage and linkage disequilibrium information. The results also
showed that multiallelic markers are more useful than biallelic
markers to detect linkage disequilibrium and association at an equal
distance
Linkage disequilibrium interval mapping of quantitative trait loci
BACKGROUND: For many years gene mapping studies have been performed through linkage analyses based on pedigree data. Recently, linkage disequilibrium methods based on unrelated individuals have been advocated as powerful tools to refine estimates of gene location. Many strategies have been proposed to deal with simply inherited disease traits. However, locating quantitative trait loci is statistically more challenging and considerable research is needed to provide robust and computationally efficient methods. RESULTS: Under a three-locus Wright-Fisher model, we derived approximate expressions for the expected haplotype frequencies in a population. We considered haplotypes comprising one trait locus and two flanking markers. Using these theoretical expressions, we built a likelihood-maximization method, called HAPim, for estimating the location of a quantitative trait locus. For each postulated position, the method only requires information from the two flanking markers. Over a wide range of simulation scenarios it was found to be more accurate than a two-marker composite likelihood method. It also performed as well as identity by descent methods, whilst being valuable in a wider range of populations. CONCLUSION: Our method makes efficient use of marker information, and can be valuable for fine mapping purposes. Its performance is increased if multiallelic markers are available. Several improvements can be developed to account for more complex evolution scenarios or provide robust confidence intervals for the location estimates
Effect Of System Quality and Information Quality on Crisis Management - An Empirical Study on Jordanian Mobile Telecommunications Companies.
This study attempts to identify the impact of system quality and information quality on crisis management in Jordanian mobile telecommunication companies. A survey method was applied through a questionnaire. Zain, Orange and Umniah are Jordanian mobile telecommunications companies that are working in the Hashemite Kingdom of Jordan. A sample of 80 managers participated in this study. The data was analyzed by a descriptive statistics method using the statistical package of social sciences (SPSS). The results showed a strong statistical significant effect of system quality and information quality on crisis management in the targeted telecommunication companies. The study concluded that 85.3 % of the variation in crisis management are explained by both (system quality & information quality) This is an high percentage which illustrates the importance of (system quality & information quality) and their impact on crisis management. The study recommends paying more attention and focus on studying the different factors of quality measurement in information systems and their impact on crisis management. Keyword: System Quality, Information Quality, Crisis management DOI: 10.7176/EJBM/12-1-07 Publication date: January 31st 202
Burden of disease scenarios for 204 countries and territories, 2022–2050: a forecasting analysis for the Global Burden of Disease Study 2021
Background: Future trends in disease burden and drivers of health are of great interest to policy makers and the public at large. This information can be used for policy and long-term health investment, planning, and prioritisation. We have expanded and improved upon previous forecasts produced as part of the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) and provide a reference forecast (the most likely future), and alternative scenarios assessing disease burden trajectories if selected sets of risk factors were eliminated from current levels by 2050. Methods: Using forecasts of major drivers of health such as the Socio-demographic Index (SDI; a composite measure of lag-distributed income per capita, mean years of education, and total fertility under 25 years of age) and the full set of risk factor exposures captured by GBD, we provide cause-specific forecasts of mortality, years of life lost (YLLs), years lived with disability (YLDs), and disability-adjusted life-years (DALYs) by age and sex from 2022 to 2050 for 204 countries and territories, 21 GBD regions, seven super-regions, and the world. All analyses were done at the cause-specific level so that only risk factors deemed causal by the GBD comparative risk assessment influenced future trajectories of mortality for each disease. Cause-specific mortality was modelled using mixed-effects models with SDI and time as the main covariates, and the combined impact of causal risk factors as an offset in the model. At the all-cause mortality level, we captured unexplained variation by modelling residuals with an autoregressive integrated moving average model with drift attenuation. These all-cause forecasts constrained the cause-specific forecasts at successively deeper levels of the GBD cause hierarchy using cascading mortality models, thus ensuring a robust estimate of cause-specific mortality. For non-fatal measures (eg, low back pain), incidence and prevalence were forecasted from mixed-effects models with SDI as the main covariate, and YLDs were computed from the resulting prevalence forecasts and average disability weights from GBD. Alternative future scenarios were constructed by replacing appropriate reference trajectories for risk factors with hypothetical trajectories of gradual elimination of risk factor exposure from current levels to 2050. The scenarios were constructed from various sets of risk factors: environmental risks (Safer Environment scenario), risks associated with communicable, maternal, neonatal, and nutritional diseases (CMNNs; Improved Childhood Nutrition and Vaccination scenario), risks associated with major non-communicable diseases (NCDs; Improved Behavioural and Metabolic Risks scenario), and the combined effects of these three scenarios. Using the Shared Socioeconomic Pathways climate scenarios SSP2-4.5 as reference and SSP1-1.9 as an optimistic alternative in the Safer Environment scenario, we accounted for climate change impact on health by using the most recent Intergovernmental Panel on Climate Change temperature forecasts and published trajectories of ambient air pollution for the same two scenarios. Life expectancy and healthy life expectancy were computed using standard methods. The forecasting framework includes computing the age-sex-specific future population for each location and separately for each scenario. 95% uncertainty intervals (UIs) for each individual future estimate were derived from the 2·5th and 97·5th percentiles of distributions generated from propagating 500 draws through the multistage computational pipeline. Findings: In the reference scenario forecast, global and super-regional life expectancy increased from 2022 to 2050, but improvement was at a slower pace than in the three decades preceding the COVID-19 pandemic (beginning in 2020). Gains in future life expectancy were forecasted to be greatest in super-regions with comparatively low life expectancies (such as sub-Saharan Africa) compared with super-regions with higher life expectancies (such as the high-income super-region), leading to a trend towards convergence in life expectancy across locations between now and 2050. At the super-region level, forecasted healthy life expectancy patterns were similar to those of life expectancies. Forecasts for the reference scenario found that health will improve in the coming decades, with all-cause age-standardised DALY rates decreasing in every GBD super-region. The total DALY burden measured in counts, however, will increase in every super-region, largely a function of population ageing and growth. We also forecasted that both DALY counts and age-standardised DALY rates will continue to shift from CMNNs to NCDs, with the most pronounced shifts occurring in sub-Saharan Africa (60·1% [95% UI 56·8–63·1] of DALYs were from CMNNs in 2022 compared with 35·8% [31·0–45·0] in 2050) and south Asia (31·7% [29·2–34·1] to 15·5% [13·7–17·5]). This shift is reflected in the leading global causes of DALYs, with the top four causes in 2050 being ischaemic heart disease, stroke, diabetes, and chronic obstructive pulmonary disease, compared with 2022, with ischaemic heart disease, neonatal disorders, stroke, and lower respiratory infections at the top. The global proportion of DALYs due to YLDs likewise increased from 33·8% (27·4–40·3) to 41·1% (33·9–48·1) from 2022 to 2050, demonstrating an important shift in overall disease burden towards morbidity and away from premature death. The largest shift of this kind was forecasted for sub-Saharan Africa, from 20·1% (15·6–25·3) of DALYs due to YLDs in 2022 to 35·6% (26·5–43·0) in 2050. In the assessment of alternative future scenarios, the combined effects of the scenarios (Safer Environment, Improved Childhood Nutrition and Vaccination, and Improved Behavioural and Metabolic Risks scenarios) demonstrated an important decrease in the global burden of DALYs in 2050 of 15·4% (13·5–17·5) compared with the reference scenario, with decreases across super-regions ranging from 10·4% (9·7–11·3) in the high-income super-region to 23·9% (20·7–27·3) in north Africa and the Middle East. The Safer Environment scenario had its largest decrease in sub-Saharan Africa (5·2% [3·5–6·8]), the Improved Behavioural and Metabolic Risks scenario in north Africa and the Middle East (23·2% [20·2–26·5]), and the Improved Nutrition and Vaccination scenario in sub-Saharan Africa (2·0% [–0·6 to 3·6]). Interpretation: Globally, life expectancy and age-standardised disease burden were forecasted to improve between 2022 and 2050, with the majority of the burden continuing to shift from CMNNs to NCDs. That said, continued progress on reducing the CMNN disease burden will be dependent on maintaining investment in and policy emphasis on CMNN disease prevention and treatment. Mostly due to growth and ageing of populations, the number of deaths and DALYs due to all causes combined will generally increase. By constructing alternative future scenarios wherein certain risk exposures are eliminated by 2050, we have shown that opportunities exist to substantially improve health outcomes in the future through concerted efforts to prevent exposure to well established risk factors and to expand access to key health interventions. Funding: Bill & Melinda Gates Foundation
Impact of opioid-free analgesia on pain severity and patient satisfaction after discharge from surgery: multispecialty, prospective cohort study in 25 countries
Background: Balancing opioid stewardship and the need for adequate analgesia following discharge after surgery is challenging. This study aimed to compare the outcomes for patients discharged with opioid versus opioid-free analgesia after common surgical procedures.Methods: This international, multicentre, prospective cohort study collected data from patients undergoing common acute and elective general surgical, urological, gynaecological, and orthopaedic procedures. The primary outcomes were patient-reported time in severe pain measured on a numerical analogue scale from 0 to 100% and patient-reported satisfaction with pain relief during the first week following discharge. Data were collected by in-hospital chart review and patient telephone interview 1 week after discharge.Results: The study recruited 4273 patients from 144 centres in 25 countries; 1311 patients (30.7%) were prescribed opioid analgesia at discharge. Patients reported being in severe pain for 10 (i.q.r. 1-30)% of the first week after discharge and rated satisfaction with analgesia as 90 (i.q.r. 80-100) of 100. After adjustment for confounders, opioid analgesia on discharge was independently associated with increased pain severity (risk ratio 1.52, 95% c.i. 1.31 to 1.76; P < 0.001) and re-presentation to healthcare providers owing to side-effects of medication (OR 2.38, 95% c.i. 1.36 to 4.17; P = 0.004), but not with satisfaction with analgesia (beta coefficient 0.92, 95% c.i. -1.52 to 3.36; P = 0.468) compared with opioid-free analgesia. Although opioid prescribing varied greatly between high-income and low- and middle-income countries, patient-reported outcomes did not.Conclusion: Opioid analgesia prescription on surgical discharge is associated with a higher risk of re-presentation owing to side-effects of medication and increased patient-reported pain, but not with changes in patient-reported satisfaction. Opioid-free discharge analgesia should be adopted routinely
دراسة تجريبية للعلاقة بين محتوى التربة الانتفاخية المشبعة جزئياً من الرمل وبين مقاومتي القص المباشر والضغط الحر
تتأثر السلوكية الميكانيكية للتربة الغضارية الانتفاخية بحسب نسبة الرمل المضافة بها نظراً لاختلاف مكونات كلأ من الجزء الخشن(الرمل) والجزء الناعم (الغضار الانتفاخي) اللذان يتحكمان بالتماسك والاحتكاك للتربة كما يتحكم بخصائص المقاومة أيضاً كلاً من الكثافة ومحتوى المياه. تمّ في هذا البحث إجراء تجارب القص المباشر المستوي والضغط الحر لنسب مختلفة من الرمل المضاف تحت كثافات ودرجات اشباع مختلفة وتبيّن أنّ لكل من درجة الاشباع ونسبة الرمل المضافة تأثير كبير على المقاومة كما تمت مناقشة العلاقة بين التماسك ومقاومة الضغط الحر لكل نسب الرمل المضافة واستنتاج علاقة تربط بين التماسك ومقاومة الضغط غير المحصور. وتعتبر نسبة الرمل 30% هي النسبة المثلى التي يجب ألا تقل عنها نسبة الرمل في التربة الانتفاخية لتحقيق أفضل مقاومة عند الاشباع وتزيد هذه النسبة بانخفاض درجة الاشباع
Linkage disequilibrium fine mapping of quantitative trait loci: A simulation study
<p>Abstract</p> <p>Recently, the use of linkage disequilibrium (LD) to locate genes which affect quantitative traits (QTL) has received an increasing interest, but the plausibility of fine mapping using linkage disequilibrium techniques for QTL has not been well studied. The main objectives of this work were to (1) measure the extent and pattern of LD between a putative QTL and nearby markers in finite populations and (2) investigate the usefulness of LD in fine mapping QTL in simulated populations using a dense map of multiallelic or biallelic marker loci. The test of association between a marker and QTL and the power of the test were calculated based on single-marker regression analysis. The results show the presence of substantial linkage disequilibrium with closely linked marker loci after 100 to 200 generations of random mating. Although the power to test the association with a frequent QTL of large effect was satisfactory, the power was low for the QTL with a small effect and/or low frequency. More powerful, multi-locus methods may be required to map low frequent QTL with small genetic effects, as well as combining both linkage and linkage disequilibrium information. The results also showed that multiallelic markers are more useful than biallelic markers to detect linkage disequilibrium and association at an equal distance.</p
Clinical and socio-demographic parameters contributing to treatment incompliance in Palestinian patients with diabetes
Background: This research study investigates the degree of medication-related satisfaction experienced by Palestinian patients with diabetes. In addition, this study further assesses the association between certain clinical and socio-demographic factors and the degree of satisfaction among the patients. Methods: This cross-sectional, descriptive study design consisted of 415 randomly selected patients from the Palestine Medical Complex (PMC), the Palestinian Ministry of Health Clinics, and from the Palestinian Diabetes Institute (also known as: Al-Bireh Medical Center). The Diabetes Medication Satisfaction (DiabMedSat) questionnaire measured patients’ satisfaction levels regarding their medications. Results: Odds ratios from binomial logistic analysis and the analysis of variance determined statistically significant correlations. The analysis has displayed the presence of significant associations between clinical and socio-demographic factors and treatment satisfaction. Significance was determined at p values < 0.05 and p values < 0.01. Conclusion: This research identified statistically significant associations between certain clinical and socio-demographic factors and diabetic patients’ satisfaction regarding their treatment. Addressing the concerns and difficulties experienced by the patients may impede treatment incompliance and hinder the development of complications, or at least postpone them