This paper investigates the effect of peristaltic flow of a Jeffrey nanofluid in endoscope. The flow is streaming through a tapered artery having a mild stenosis. The influences of heat and nanoparticle concentration on blood flow are also taken into account. Both velocity and thermal slip conditions are considered. The governing equations of motion, energy and nanoparticles are based on a perturbation technique. This technique depends on two parameters. Firstly, the amplitude ratio. Secondly, the small wave number. The distributions of the axial velocity, temperature and nanoparticle volume fraction are analytically derived. The pressure rise and friction force are numerically calculated. The numerical calculations are adopted to obtain the effects of several physical parameters, such as the slip parameter, Brownian motion parameter, thermophoresis parameter, the Reynolds number, the taper angle, nanoparticles Rayleigh number, thermal Rayleigh number and the maximum height of stenosis. It is found that the axial velocity increases with the decrease of the slip parameter. Meanwhile, it increases with the increase of both the nanoparticles Rayleigh number and the thermal Rayleigh number in the region of stenosis. The stream lines are also depicted. It is observed that the trapped bolus decreases in size with the increase of both the Brownian motion parameter and the thermophoresis parameter. In addition, the trapped bolus increases in size with the increase of both the maximum height of stenosis and the taper angle.
Wavelet has wide range of use in the present scientific universe. At present using wavelet through MATLAB different types of tasks are done. For instance biometric recognition (fingerprint recognition, voice recognition, iris recognition, face recognition, pattern recognition and signature recognition), signal processing, human voice activity detection etc. are done using wavelet and wavelet transform. Among these here I have discussed about "Human Voice Activity Detection". At first a human voice is taken as the input sound to MATLAB command window using a good headphone for a few second. Then the sound taken as input give a graphical representation that is saved for future activities. After that using the wavelet toolbox of MATLAB the image of the input sound is taken for analyzing it. Using discrete wavelet transform the image is analyzed. During this analysis a "10 level wavelet" tree is generated by Haar wavelet with 10 decomposition level. At the same time the original signal is reconstructed. At the first time six different human voice activities of the same persons are analyzed. The Norm and the SNR (Signal to Noise Ratio) are counted. The data of the SNR are counted in decibel (db.) unit. Also the bit rates of the three different voice are counted. In this way total 18 different experiments are done for the different five persons where except the first person for all the person three experiments are dine.. The numerical data of the experiments are shown as graphical representation as well as in histogram analysis. In this process the whole experiments are done for the activity detection of human voice.
Static converters are used in many different areas of the conversion of electrical energy. Significant developments in electric power switches and variety of design techniques of control and regulation circuits bring very advantageous solutions for congestion, reliability, performance and maintenance of converters. The present work focuses on the study and implementation of an Arc cosine pulse generator for commutated converter acting on a composite bridge in order to linearly control the speed of a DC motor. The principle of the control of the Arc cosine pulse generator for commutated converter is based on the fact the average rectified voltage is proportional to the control voltage as the rectified voltage is a function of the average cos?, which over a wide beach, is clearly non-linear. But for tension adjustment needs over a wide range, with a control voltage and constant ratio, it is often necessary to linearize the control. This allows a similarly linear variation in the speed of the DC motor.
Egypt is one of the Arab developing countries that began establishing higher education earlier than most Arab countries. It used to be a source of educational, scientific, and culture diffusion to the Arab world. Thus, it is our expectation that Egypt should occupy a high status in higher education. However, the status of Egyptian higher education now is unsatisfactory, compared to Egypt's past and rapid, successive global developments. This status is based on lack of two basic elements- Equity and Quality. So the researcher will begin with brief of the notions of social justice and quality in higher education. Then, I will introduce an overview of the developments in Egyptian higher education in relation to equity and quality. In the third and fourth parts of this paper, the researcher will identify some trends of some international organizations about the equity and quality, which give us two essential aspects: First, to determine what we mean by equity and quality. Second, to explore and find out which of these global and international trends are more influential in the development of higher education decision-making and policy in Egypt. Then, I will deal with and evaluate the developments of Egyptian higher education from the perspective of quality and equity. In the end, the researcher will present the conclusions that include some suggestions to improve equity and quality of Egyptian higher education, which includes: - First: Inequality at Regional Level - Second: Inequality in terms of Gender - Third: Inequality in hiring and in the Egyptian Workplace Given these findings, the policies of free higher education introduced in the early 1960s have been entirely undermined and new policies are needed. Thus, the paper has six suggestions to improve the quality and equity of higher education in Egypt. The government should: - Look for new resources to provide quality free higher education to all those who need. - Redistribute of private, foreign and public higher institutes on the all regions especially in Upper Egypt and Suez Canal. - Push both public and private higher education institutes to assure the quality. - Push private and foreign universities' to commitments by requiring them to make education available to more students. - Offer new academic courses at public universities and bridge the quality gap with private and foreign universities - Finally the government should benefit from the World Bank and GATS policies to achieve merit access in higher education
This study was conducted in the Lubumbashi region (DR Congo) during the 2013-2014 cropping season to determine optimal doses of chemical fertilizers to be applied to new varieties of maize. Four doses of mineral fertilizers (D1 =
The present study looked at the effects of planting date and spaces on growth and yield of soybean (Glycine max L. Merr) in soil and climatic conditions in Lubumbashi region. The trial was installed following a split plot design with three replicates. The main plots consisted of sowing dates (15th December, 30th December and 15th January) and the second plots included all seeding rates leading to a population of 125,000 plants per hectare (40 Cm x 20 cm was due to seed per hole; 40 cm x 40 cm with 2 seeds per hole and 60 cm x 40 cm with 3 seeds per hole). The results showed that late planting leads to slower growth and reduced yield of soybean. However, different plant densities adopted included similar effects in all the parameters observed. Planting soybean on the 15th December at a space of 40 cm x 20 cm x 3 seeds per hole would effectively increase soybean yield in the Lubumbashi region. The increase in performance would be desirable in order to fight against bad nutrition considering the scarcity of animal protein and the low- income populations.
Machining is an integral and indispensable part of production technology with cutting tool playing key roles in its operations. This work therefore developed cutting tool from scrapped crank shaft, connecting rod, alloy additives and palm kernel shell. These materials were chosen due to their hardness and availability. The scrapped crankshaft and rod (100 kg) containing 0.560 % carbon were charged into electric induction furnace with maximum temperature 3000oC. The composition of the charged materials was analyzed with the UV-VIS spectrometer before and after melting. In order to raise the carbon content of the melt to 0.65% target (HSS) and upgrade relevant elements, alloy additives were added. Annealing was the first treatment carried out in muffle treatment furnace at temperature at 900oC for 9 hrs then cooled to 300oC. The annealed materials were machined into 20 pieces of long (199 x 12 x 12 mm) and short (20x 12 x12 mm) sizes. Further treatments of hardening, normalizing and tempering were also carried out on the cutting tools. The tools were then carburized with pulverized carbon using 20 % Barium trioxocarbonate (V) as an energizer in a muffle treatment furnace. Each of the samples was soaked at temperature of 800oC, 850oC, 900oC and 950oC for 60, 90 and 120 minutes holding time. Micro-hardness and surface hardness of the tool were 47.9 and 76.8HR, while for control sample were 46.1 and 76.3HR respectively.
Millettia laurentii De Wild. is the high value species most exploited for timber in the Democratic Republic of Congo. For this, the species suffers from natural regeneration deficit to overcome this drawback, this study aims to develop relatively simple and efficient methods of vegetative multiplication of this species: the macrocuting. Four silvicultural techniques have been tested on a plot of a quarter of hectare (n=196). Gathering respectively macrocuting up to 1.50, 1.30, 0.75 and 1 meter above ground. After 12 months of observation, the treatments 1 and 0.75 meter height showed the highest percentage by number of the granulations is 75.5% with a mean of 9.8
The learning of Cameroonian languages is timely. Technologies facilitate somehow this learning, yet they have a force that permits a bringing together of people and the wide dissemination of information. The production of documents in Cameroonian languages and their propagation remain shy to a certain extent because of difficult access to electric power, computer equipment and a reliable internet connection for the many. Learning is listed in the same category as the production and dissemination of documents. Such learning can be done, we suggest, from mobile phones, which numbers are growing dramatically. However, one obstacle is present: phones are not suitable for the simple reason that they do not have certain letters and diacritics in Cameroonian languages. Conviction that such contribution may participate in a burst of development, this paper proposes Cameroon phone keypads for entering data such as SMS in all languages of Cameroon. It exposes three multi-taps and a mono-tap telephone keypad. For instance, the article explains how these keyboards were designed, but also how the characters have been disposed on each keypad.
Sustainability and economic efficiency in corn production could increase by the integrated weed management to a tolerable level. A study was conducted at the Kasapa farm during the 2013-2014 crop year to assess growth, grain yield of two improved varieties of maize (UNILU and Bukidi-Bukidi) and production economics Starting from two modes of weeding (manual weeding hoe and chemical weeding) and 4 weed management alternatives: {Weeding Manual (TO), 3l / ha atrazine (T1), 3l / ha acetochlor (T2), 6l / ha atrazine and acetochlor mixture (T3)}. The results revealed that the two varieties were similar height perspective of seedlings and yield. Six species have been recorded, but only two species (Setaria pumila and Cyperus rotundus) were resistant to their presence in all plots. Compared to weed management practices, performance culture has evolved as follows: T2> T3> T1> T0.Cependant an acceptable economic return was obtained with 3l / ha acetochlor. To intensify maize production in the study area, the mixture of acetochlor and atrazine is Discourage while adoption of acetochlor requires an extension on these modes.
Objective: Identify the report of toxic habits with the evolution to vascular cerebral accidents among residents of the prefecture of Skhirat-Temara. Method: Retrospective of lifestyle analysis identified patients and two family members or relatives. Keeping a questionnaire to the personal character interesting items, social and toxic habits. Inclusion criteria: residents of the prefecture of Skhirat-Temara with vascular cerebral accidents and two witnesses relatives of the same age, socio-economic and health life-like. Results: Our series included 136 individuals: 46 patients and other witnesses that meet the inclusion criteria. The incidence of vascular cerebral accidents is 11.7 per 100,000 inhabitants. Despite the reduced number of our series, we find that the results are concordant with those described in the literature, in particular gender, age, IMC, toxic habits especially active smoking and passive imposed on the entourage of smokers in the absence of the implementation of smoke-free laws in public areas. Conclusion: This study evaluates the impact of toxic habits in the pathogenesis of vascular cerebral accidents in the population studied. It provides food for thought regarding the measures to adequate prevention.
The production of porcelain face many obstacles in the Egyptian market, locally and in the international market as well. Some of these challenges include improving production and quality so that it abides by international standard that the Egyptian product greatly lacks. One of the most prominent challenges too is the increasingly huge gap between technology in industrial countries and third world countries. Without this modern technology it is nearly impossible for any country that lacks this technology to be part of this market, not even compete., since modern technology is intrinsic to all the elements of production, and export, which has complicated the market even more since the borders between local and international markets are nearly nonexistent .In a study about the role of manufacturing technology in the provision of Industrial exports to international markets, that the increase in technology leads to the decrease in production cost. Decrease in the quality of elements used and the increase in the elements used in technical production which leads to a reduction in the final product price the production that is high quality and can compete in international markets. The research will portray some of the new machines used in the production of tableware.
The purpose of this study is to raise the temperature of the pond water during cold in Lubumbashi, using different amounts of charcoal. Three ponds of 1.5 ares were used, and twenty barrels placed in two ponds due to ten per pond. The distance between the barrels was 2 m. The first pond was not heated, the second and the third was heated using respectively 15 and 30 kg of charcoal per day. Temperatures were taken at different times and the data obtained were subjected to analysis of variance using SPSS 16.0 software. The results obtained showed that the addition of 15 kg of charcoal increases the temperature of a unit, respectively 19.2
Congolese agriculture is still largely extensive, characterized by low yields. For maize, the yields obtained in rural areas are about 10 times less than the potential of the culture; low soil fertility levels coupled with the use of non-performance equipment are the major causes. This test was installed following a split plot design to evaluate the effects of increasing doses of nitrogen fertilization on the behavior of two varieties of maize (UNILU and Katanga). The main plots included two varieties of maize and secondary plots, the different levels of mineral fertilizers (N0 = 0kg, N1 = 30kg, 60kg = N2, N3 = 90kg, 120kg = N4, N5 = 150kg, N6 = 180kg, N7 = 210 kg urea per hectare). The results show similarities between the two varieties and significant differences were obtained with N rates on flowering insertion height, to flowering days and maize yield. However, the analysis of variance indicates that the different nitrogen inputs did not influence maize emergence and its lodging resistance. However, the high rates of nitrogen have led early onset of inflorescences and allowed obtaining large plants. The dose N4 has a higher acceptability index compared to other doses it would be most advisable.
Identification and seroepidemiological and molecular study were conducted for diabetic mellitus patients to investingate the infected person with Toxoplasmosis in the Babylon province for two sexes during the period from October 2013 till July 2014. Latex agglutination (LA) tests were used for 550 serum samples and ELISA technique for 350 serume samples (where positive with LA test) and polymerase chain reaction (PCR) technique for 100 blood samples (where positive with ELISA technique), according to epidemiological criterions (Sex , area region , age group , educational level , presence or absence of animals and presence or absence of other companion diseases). The results showed that the total toxoplasmosis samples positive using the test latex (63.6%) and ELISA antibody IgG (51.4%) and antibody IgM (% 11.4). polymerase chain reaction technique was (45%) and the results showed that there were significant differences between males and females for tests the above three, the housing area for testing latex the city were more prone to infection (65.1%) The ELISA test was the city more susceptible to infection (53.4%) for antibody IgG were districts and suburban more vulnerable to infection (9.7%) for the antibody IgM.
Reading, auditory discrimination and matching abilities of 34 Arabic-speaking students into two groups (good readers and poor readers) were examined using the Labbel to check the validity of auditory discrimination as dyslexia diagnostic indicator. The subjects' results at the four spots of labbel (reading words / no words with diacritical, reading words / no words without diacritical, auditory discrimination of words and letter matching heard / letter) showed a significant difference between the results of the good readers and those of poor readers. All the results confirm the validity of auditory discrimination as reading disorder screening tool.
In this paper we present the relation between theoretical and practical linguistics with the education. We discuss several theories which aim to define the process followed by the teacher to improve learner's skills. We will focus particularly on two notions: skill and competence, we present also a strategic model of second year baccalaureate, taking into consideration the mental and emotion level of the learner.
The elaboration of vulnerability maps remains a fundamental tool in the management and study of flood-related risks (floods and hydric erosion). This study aims to develop these maps through Geographic Information Systems (GIS), which can be used as basic documents for any action of developments in the watershed of Oued El Maleh in M'Saken region (eastern Tunisia). This region is characterized by the weakness of its topography and its slopes. Its rainfall, generally irregular and sometimes aggressive and torrential, can transform rivers which are often very little marked in nature, to real torrents with great erosive power, able to lead to flooding. This natural vulnerability is accentuated by the spreading of several urban areas in submersibles zones, in particular that of M'Saken, and by the development of the agricultural lands. In this context, the present study focused on the collection of digitized topographic maps, of Landsat images and others of Google Earth in order to create an integrated database in a Geographic Information System. The results are thematic maps which make it possible to define and analyze, by superposition of several layers of information, the natural environment; and to carry out a spatial analyzes required to characterize, map, and study the vulnerability.
Pb(MnxTi1-x)O3 (PMTx) samples have prepared using the conventional solid state reaction and their structures examined with X-ray diffraction (XRD) technique. The latter showed that these materials, heat treated at 800
This study was undertaken to assess the financial profitability of aromatic rice production. A total of 45 farmers of some selected villages of Chirirbandar upazila of Dinajpur district were considered as sample for achieving these objectives. To collect data, a questionnaire was administrated through face-to-face interviews of the sample farmers. Collected data were analyzed with descriptive statistics. The result of descriptive analysis revealed that the average family size of aromatic rice growers was 4.64 and 88.88 percent of total sample farmers were literate. Total costs for aromatic rice was estimated at Tk. 64446.51 per hectare and per hectare gross return of aromatic rice was Tk. 114243.71. Gross margin for aromatic rice was estimated at Tk. 59999.29 per hectare. Thus, the net return was estimated at Tk. 49797.20 for aromatic rice production. The undiscounted Benefit Cost Ratio on the basis of total cost was 1.77 implying that the aromatic rice production was highly profitable. Finally, some policy recommendations based on the findings of the study were suggested in the study.
The teaching-learning processes for algebra are crucial, because they promote the cognitive bases for the study of other knowledge areas like engineering's; however, its topics are one of the most complicated to understand for many students. In the last years, the virtual learning environments have been taking importance to support the teaching-learning process in general way. In this work the development of a based games virtual learning environment, containing elementals topics of algebra and designed for first semester students on bachelor level, is described. The learning tool has been built with three main modules: 1) Learning, containing audiovisual lessons based on sensorial stimulus, designed with the cognitive theory principles; 2) Reinforcement, where the understanding of the lessons is practiced using an approach based on games and student centered; 3) Evaluation, where the level of learned and practiced topics of the lessons is evaluated. The three modules development of the learning virtual environment are detailed, so as the auxiliary modules for the management of the information of professors and students, queries and reports.
The improper knowledge of mothers is the most causes of the onset of malnutrition in young children. Growth chart is an essential tool in growth monitoring program for malnutrition prevention among children. This study is to investigate the impact of the modified growth chart that is called "Bubble Score Growth Chart" on mothers' knowledge and child calorie intake. Mothers in intervention group used bubble score growth chart while mothers in control group used the normal growth chart. Sixteen written questions were designed and tested to measure mothers' knowledge. Results : Before intervention, there was no significant difference of mothers' knowledge, comprehension and application(p>0.05) and child calorie intake (p>0.05) between intervention and control group. After intervention, there was significantly different of high knowledge (86% vs 52%); high comprehension (86% vs 54%) and high application (78% vs 46%, p<0.01) and high calorie intake (74% vs 46%, p<0.01) respectively for intervention and control groups. Modified growth chart effectively improved mothers' knowledge and child calorie intake.
The Mingosso watershed is located at periurban zone. It was influenced by high rate of occupation of space by the dwellings. This occupation of space has an impact on the groundwater quality exploited by the wells and the springs. These groundwaters make it possible to make up the deficit due to the lack of the distribution network of water. This water is also threatened by pollution rising from the anthropic activities. In order to protect groundwaters from the Mingosso watershed against pollution, the study on the evaluation of the intrinsic vulnerability in the aquifers of this watershed was carried out by applying methods DRASTIC, SI and GOD coupled with a Geographical Information System. The aim had by this study is to chart the zones likely to be more at the risk of contamination due to an activity coming from the soil surface. Three classes of degree of vulnerability similar to pollution are highlighted by methods DRASTIC, SI and GOD. They are the classes of low, average vulnerability (or moderate) and strong (or significant). The low class of degree vulnerability is most dominant, covering the surfaces respectively of 53,82%; 67,46% and 71,80% for these methods. This low degree vulnerability is due to low permeability, an average infiltration and average slopes. The rate of coincidence of the values of mineralisation of groundwaters with the definite zones of vulnerability is 37%, 18,5% and 25,9% respectively for methods DRASTIC, SI and GOD. Of this rate of coincidence, approach DRASTIC seems to better reflect reality on the ground and could be adequate for the tracing of the vulnerability in the Mingosso watershed.
Employees' job satisfaction is an old concept in industrial relations and is influenced by a number of factors. Since the promulgation of the Constitution of Kenya 2010, some of the government functions which used to be under the central government have since been devolved to the county governments. These functions include the Ministry of Health, Ministry of Water, Ministry of Agriculture and Ministry of Public works and roads among others. Employees working in these ministries, among others, had their functions devolved to the county governments. The deployment to the counties had adverse effects among employees as exemplified by strikes of the employees of the Ministry of Health. The main objective of this study was to assess the effect of selected job motivational factors on civil servants' job satisfaction within government devolved functions in Nakuru County. The target population was 1912 employees working in the devolved functions. The sample size of the study was 320 systematically picked across the devolved functions. The study used a close ended questionnaire as the main data collection tool. Both Pearson's correlation and regression analyses were used to establish whether the selected motivational factors were related to the exiting level of employees' job satisfaction. The study established that procedural justice and interactional justice contributed significantly to employees job satisfaction compared to communication and supervision.