186,226 research outputs found
Measuring rheological properties for applications in quality assessment of Traditional Balsamic Vinegar: Description and preliminary evaluation of a model
No full textIn this research, a study of fundamental rheological properties of Traditional Balsamic Vinegar (TBV) was conducted by using a liquid food model system. With this purpose, aqueous solutions containing the main chemical constituents of TBV were prepared according to a Central Composite Design (CCD) and flow experiments were conducted by using a controlled-strain rotational rheometer. Surface response methodology was used successfully to describe effects of the chemical composition on the rheological behavior of the investigated TBV-like model system (TBV-M). It was found that glucose mass fraction and glucose to fructose ratio strongly affected the steady shear viscosity of TBV-M and that the viscosity changed with temperature according to the Arrhenius's law in the range of 20-60 degrees C. We propose both the shear viscosity and flow activation energy as potential candidates to the rapid and objective evaluating of TBV quality before performing of sensorial analysis as specified by the specific production disciplinary. (c) 2006 Elsevier Ltd. All rights reserved
Prevalence and predictors of left ventricular dysfunction among patients with chronic kidney disease attending Muhimbili National Hospital in Tanzania — a cross-sectional study
No full textPilly Chillo, Eva Mujuni Department of Internal Medicine, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania Purpose: Chronic kidney disease (CKD) is prevalent in sub-Saharan Africa and is a significant cause of mortality, which may result from kidney failure or congestive heart failure – a frequent complication of CKD. There is however scarcity of documented literature on the magnitude and associated factors of echocardiographically determined left ventricular (LV) dysfunction among CKD patients in Tanzania. Patients and methods: A prospective cross-sectional study was conducted from May 2014 to January 2015 at Muhimbili National Hospital (MNH) in Dar es Salaam, Tanzania. Patients ≥18 years with CKD were consecutively enrolled. Clinical characteristics, cardiovascular risk profiles, and laboratory findings including serum creatinine, urea, hemoglobin, and cholesterol levels were collected. Echocardiography was performed to assess LV function using standard criteria. Results: One hundred and ninety-one CKD patients fulfilled the inclusion criteria. The mean ± SD age was 48 ± 13 years, and 54.5% were men. A total of 98.4% of the patients were hypertensive, and diabetes was present in 22.8% while 97.9% had end-stage renal disease. The prevalence of LV systolic and diastolic dysfunction was 16.2% and 68.6%, respectively. A ­clinical finding of heart failure was the only independent predictor of LV systolic dysfunction (odds ratio [OR] = 2.9, p = 0.012), while independent predictors of LV diastolic dysfunction were anemia (OR = 4.9, p = 0.01), severe hypertension (OR = 9.2, p = 0.001), and female gender (OR = 1.7, p = 0.002). Conclusion: LV dysfunction is prevalent among CKD patients seen at MNH and is associated with clinical heart failure, anemia, severe hypertension, and female gender. Echocardiography should be performed in patients with CKD to detect overt or subclinical LV dysfunction. Keywords: chronic kidney disease, left ventricular dysfunction, sub-Saharan Afric
Influence of the addition of buckwheat flour and durum wheat bran on the spaghetti quality
No full textThe quality of nine spaghetti typologies, produced by using wheat durum semolina as a base plus the addition of buckwheat and durum wheat bran, was investigated. The quality of the produced spaghetti was compared with that of spaghetti made only of durum semolina (CTRL). Tests were run on the samples to determine breakage susceptibility and colour of dry spaghetti, the cooking resistance, instrumental stickiness at optimal cooking time (OCT) and overcooking, the cooking loss and sensorial attributes at the optimal cooking time. Results suggest that the breakage susceptibility decreases with the addition of 15% and 20% bran, the spaghetti dry colour changes with the addition of buckwheat flour and bran compared to the spaghetti made only of durum semolina, while the cooking resistance, instrumental stickiness and the cooking loss, in general, were equal to that of the CTRL. However, the addition of buckwheat flour and bran affected the sensorial attributes differently
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Rheological characterization of deacylated/acylated-gellan films carrying L-(+)-ascorbic acid.
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Use of a Natural Antimicrobial Substance to Prolong the Shelf-Life of the Mozzarella Cheese
No full text
Quality of spaghetti in base amaranthus wholemeal flour added with quinoa, broad bean and chick pea
No full textAppropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
