N. Sreenivas*, P. Anil Kumar and Ch. Tulasi
Zooplankton is an important biological component of any aquatic ecosystem. Its high rate of production influences enrichment of organic matter and it plays a vital role in secondary and tertiary productions. Zooplankton in the Indian estuaries had been widely studied. Though extensive studies were made on the distribution of zooplankton of estuarine and coastal waters, studies related to mangrove regions were meager. The mangrove ecosystem in the vicinity of Kakinada Bay is a complex environment since this happens to be a transition zone between limnetic and marine regions of the diverse aquatic regimes. Zooplankton form Gaderu and Coringa rivers of the mangrove area of the Kakinada were collected. The results reveal that during the months of November and December coinciding with the post monsoon period peak abundance of zooplankton was noticed. The post monsoons period is the period of re-colonisation. The meroplankton abundance varied between 25.04 % to 32.35 % in the Gaderu River and the similar observation was noticed in the Coringa River also. Since the mangrove habitat provides the natural nutrients through leaching activity, it supports higher percentages of meroplankton.
Neelima Routhu, Bandaru V Rao*, G. Ramakrishna and N. Nagaraju
The aim of this study was to characterize the phytochemical composition and evaluation of antioxidant and antibacterial potentials of Tamarindus indica leaves in different in vitro assays.The antioxidant activity of different solvent extracts of leaves of Tamarindus indica were studied using FRAP assay, DPPH free radical scavenging activity and Superoxide peroxidase activity.Antibacterial activity against two Gram-positive (Bacillus subtilis,and, Staphylococcus aureus) and three Gram negative (Klebsiella pneumonia,Proteus vulgaris and Escherichia coli) bacterial species was investigated using agar well diffusion method. Significant activity was observed against the tested microorganisms. The results of antibacterial screening assaydisplayed broad spectrum antibacterial activity by Tamarindus indica.
Abanikannda Dahood Tunji* and Oke Olanrewaju Oluwaseun
The paper expatiated on the salient matters of the economy development in Africa through Agriculture in the following three sub-headings; food security, health and employment opportunity. It is imperative to know that agriculture is the backbone of Africa’s economy. About 70% of Africans and roughly 80% of the continent’s poor live in rural areas and depends mainly on agriculture for their livelihood. Furthermore, the Current and emerging research in Africa focuses on most critical issue on agriculture related health problems such as; malnutrition, water-related diseases, health effects of pesticide use, food safety, livestock-related health and zoonotic diseases, aflatoxins, and medicinal plant production and when well managed could save the nation from excessive spendings which bounce back on national economy. Another reason why agriculture needs to be developed is that it has a way of providing an employment opportunity and curbs the problems that might want to spring forth from unemployment vogue in the economy. The unemployment problem has increased poverty rate, prostitution, ethnic conflicts, dejection, increase in crime as well as family disputes and broken marriages. Unemployed individuals become more and more dissatisfied and resort to riots and demonstrations. Due to unemployment, the economy’s GNP will be less than the potential GNP. Therefore it is then recommended that, more effort should be made on Agricultural sector because of the strategic relevance of the sector to the nation’s economy especially in the areas of health, food security and employment generation.
Santhosh Kumar Dhavala, V. Siva Krishna Neelam* and N. E. Gideon.
Our energy consumption relies heavily on the three components of fossil fuels (oil, natural gas and coal) and nearly 83% of our current energy is consumed from those sources. The use of fossil fuels, however, has been viewed as a major environmental threat because of their substantial contribution to greenhouse gases which are responsible for increasing the global average temperature. Last four decades, scientists have been searching for alternative sources of energy which need to be environmentally clean, efficient, cost-effective, renewable, and sustainable. One of the promising sustainable sources of energy can be achieved by harnessing sun energy through silicon wafer, organic polymer, inorganic dye, and quantum dots based solar cells. Among them, Dyesensitized solar cell (DSSC) is the only solar cell that can offer both the flexibility and transparency. Its efficiency is comparable to amorphous silicon solar cells but with a much lower cost. DSSCs differ from conventional semiconductor devices in that they separate the function of light absorption from charge carrier transport. Dye sensitizer absorbs the incident sunlight and exploits the light energy to induce vectorial electron transfer reaction.
Govathoti Sudeepthi* Santhosh Kumar Dhavala and G. Rajendra Kumar
Activates in allocated processing developments impelled the idea of providing details exploration as a management from thought to truth. Continuous performance of machines like Stat crunch, Data wrangler and so on appears verification to above case. A company (information holder) that needs aptitudes or computational resources can delegate its exploration requirements to an outsider reasoning management provider (daas). Business security defending framework is of most excessive important in these sort of freelancing workouts. It contains the details owners transforming their details and distribution them to server and after that launchs exploration questions to the server, and recuperates the example outcomes from the queries sent to the server. Previously works considered the 1-1 replacement determine content just attack design, where the adversary despite the fact that gets access to the scrambled factors, is not in a position to utilize the outcomes. Be that as it may this technique drops smooth in the attack designs where the aggressor knows a few places of factors and their determine principles. So rather than 1-1 replacement determine, we recommend to realize outstanding secret shows that require the area of a key for each details, enciphered details couple. It is implemented on the details candidate set totally to prohibit these rumours attacks. Our plan assures that whole factor places are uncertain, w.r.t. the aggressor's experience details of factor places. Test repercussions of our technique on a wide and true deal data source are at standard with former strategies featuring the expertise of our framework regarding flexibility, and security.
Kiran Kamath, Shashikumar Rao* and Shruthi
In the present study, a 60-storey 3-D RC frame with core wall at the centre is considered for finding out the shortening of column. The parameter considered to reduce the effect of differential column shortening is the effects of outriggers at different levels under the action of elastic, creep and shrinkage shortening. It was found that the differential column shortening is reduced by 34% when one outrigger is introduced at the optimum level of H/h1=1.715. Along with this optimum position of the outrigger, another outrigger is introduced at different levels to further reduce the differential column shortening and the optimum position of second outrigger is found out that will give the minimum differential column shortening. It was found that second outrigger at H/h2=1.33 level reduces the differential shortening by 14% in addition to that reduced by first outrigger. The present analysis is carried out using a finite element software MIDASGen and by plotting storey height versus differential column shortening between the outer peripheral column and the core wall for different positions of the outriggers.
Alaa Sameer Ibrahim* and Praveen Raj Saxena
To assess the suitability in relation to drinking water purpose fifteen ground water samples have been collected in and around Musheerabad area. The physico chemical parameters like pH, Conductivity, total dissolved solids (TDS), calcium (Ca2+),magnesium (Mg2+), sodium (Na+), potassium (K+), bicarbonate (HCO32-) chloride (Cl-),fluoride(F-) sulphate (SO42-) and nitrate (NO3-) were analyzed using standard methods to know the groundwater quality. Except for fluoride and nitrates, values of most of these parameters fall within prescribed limits for drinking purpose (BIS:2012).
Barium cerate BaCeO3 is obtained by a coprecipitation method. The crystallized samples are characterized by X-ray diffraction and electron microscopy. The structural and thermodynamic analyses revealed several transitions as a function of temperature according to the phase transformation. The electrical properties are studied using electrical impedance spectroscopy as a function of temperature. The Nyquist representations are semi-circles, characteristic of electron and ionic conduction. A series of electrical transitions are observed, which are in good agreement with structural transitions. The catalytic properties of these powdered materials in presence of air and 2500 ppm of carbon monoxide gas flows are studied by Fourier Transform Infrared spectroscopy (FTIR). The catalytic activity given rise to the total oxidation reaction and has been determined from the CO2 FTIR absorption band intensities. This activity reaches the complete transformation at 400°. The conversion rate of CO into CO2 is analyzed as a function of temperature and reaction time.
Hesham A. Yousef*, Gehad M. Saleh, A. H. El-Farrash and A. Hamza
Radon concentrations and exhalation rate were measured using Can Technique with CR-39 plastic track detectors for phosphate rocks samples from Safaga and El-Hamrawayn areas in the Eastern Desert, Egypt. The values of radon concentrations ranged from 1362.21- 20045.30
Bqm-3, 764.84 -17828.48 Bqm-3 and the values of surface exhalation rate ranged from 1.22-18.07
Bqm-2h-1, 1.09-16.07 Bqm-2h-1 for Safaga and El-Hamrawayn, respectively. From the results we can conclude that the values of radon concentration in Safaga higher than El-Hamrawayn. The present study aimed to detect any harmful radiation that would affect the human and radioactivity background levels.
Haripriyani. A* and D. Santha rao
In this study an attempt has been made to manufacture the Aluminum metal matrix (AMC) through a liquid metallurgical route. The matrix used in the study is Aluminum cast alloy 64430 and reinforcement particles selected are Silicon Carbide (SiC) particles ranging its size from 50-70 microns. Application of these materials in many areas is due to its light weight, good wear resistance and machinability. End milling is one of the most commonly used metal removal operation in industry because of its ability to remove material faster with good surface finish. The parameters that influence the surface roughness are spindle speed, depth of cut, feed rate, material and geometry of tool. The study also focuses to Optimize process parameters using Taguchi design of experiments. The three process parameters and three levels are selected and orthogonal array L9 is used for experimentation and the surface roughness is measured and optimized. Analysis of variance (ANOVA) is performed to know the impact of individual factors on surface roughness and material removal rate. Using regression analysis the theoretical values are predicted and compared with the experimental values for validation.
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