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The study investigated the effects of different methods of application of selected mordants on dyeing woven cotton with dyes from the stem bark of Albizia coriaria. The methods of application of mordants used includes; pre-mordanting, simultaneous mordanting and post-mordanting. The effects on cotton analyzed are color fastness to; light, washing, wet and dry rubbing and color characteristics on CIELab color coordinates. Aqueous extraction method was used to extract the dye. Some selected mordants were used for dyeing viz; alum, ferrous sulphate1, and iron water. In the control dyeing without the use of mordants, very good fastness were registered with the following fastness rating
Network coding has been recently applied to wireless networks to increase throughput. Back-pressure type algorithms based on the algorithmby Tassiulas and Ephremides have recently receivedmuch attention for jointly routing and scheduling over multi-hopwireless networks. we explore the performance of backpressure routing and scheduling for TCP flows over wireless networks. TCP and backpressure are not compatible due to a mismatch between the congestion control mechanism of TCP and the queue size based routing and scheduling of the backpressure framework. We decouple the routing and scheduling components of the algorithm by designing a probabilistic routing table that is used to route packets to per-destination queues. The scheduling decisions in the case of wireless networks are made using counters called shadow queues.
The study investigated the effects of different methods of application of selected mordants on dyeing woven cotton with dyes from the stem bark of Albizia coriaria. The methods of application of mordants used includes; pre-mordanting, simultaneous mordanting and post-mordanting. The effects on cotton analyzed are color fastness to; light, washing, wet and dry rubbing and color characteristics on CIELab color coordinates. Aqueous extraction method was used to extract the dye. Some selected mordants were used for dyeing viz; alum, ferrous sulphate, and iron water. In the control dyeing without the use of mordants, very good fastness were registered with the following fastness ratings; for washing (4-5), dry rubbing (5), wet rubbing (5) and light (4). The natural dye is a substantive dye since it registered very good fastness grades without the use of mordants. The use of mordants improved color fastness to light from ratings of (4) to (5) and (6) for iron water and ferrous
In order to establish a relationship between caffeine and serum and urinary electrolytes, 30 healthy males were given an oral dose of 400 mg caffeine over a period of 120 min in four divided doses and electrolyte concentrations were measured during control and experimental periods. Serum potassium decreased significantly(P<0.01) from 4.4±0.2 (control period) to 3.9±0.2 (experimental period at 400 mg of caffeine). Increased urinary sodium (i.e from 139±3 in the control period to 209±8) and increased chloride concentrations (i.e from 46±7 in the control period to 124±9) associated with increased urinary output was noticed significantly(P<0.01) at 400 mg of caffeine. These results helps in establishing a dose response relationship between caffeine and electrolytes.
The study aimed to develop a Training Module in Switching Logic as instructional material in the teaching of students of Bachelor of Technology in subjects such as Industrial Design Process and Control, Industrial Electronics and Industrial Motor Control. This was conducted at the University of Rizal System-Morong Campus during the First Semester of SchoolYear 2007-2008. Professors and Instructors of the College of Industrial Technology and College of Engineering as well as the fourth year students of Bachelor of Technology major in Electrical technology served as the respondents –evaluators in the study. The researchers used an adopted and modified questionnaire-checklist to determine the level of acceptability of the module with respect to its objectives, Contents, Pretest and post-test contents, Illustrations/photos and Usefulness.
Lognormal distribution has wide applications in the analysis of failure time data, stock prices and rainfall. In this paper we derive Bayes estimator and credible regions for the mean of the lognormal distribution. We compare the coverage probability and length of the Bayes credible interval with the confidence interval obtained from the maximum likelihood estimator of the log location and scale parameters. The procedure is illustrated using the failure time data of locomotive control and stock price.
- Aim: This paper aims to highlight the contraception related perceptions and practices of the women from an urban slum of Delhi. Methods: Data were gathered from a total of 201 pregnant women (belonging to lower income group) enrolled from a government run maternity clinic by the interview technique . Results: Data revealed that, at the time of conception, as high as 34% of the pregnancies were unwanted. Although the subjects had knowledge of contraception, the usage was very low (33%); and they considered contraception only as a means of limiting the family size which should be adopted once the family is ‗complete‘. Son preference, ignorance regarding importance of child spacing, limited control over personal lives and inhibitions/ fallacies regarding contraception were the main reasons behind far lower usage of the contraceptives. Also, lack of knowledge regarding the appropriate methods of contraception, their side-effects (if any), and the authentic source of...
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