bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Analysis of Secure Multiparty Computation Protocol
Authors: Shukla Samiksha , Mishra D. K.
Published: June 2019

In this paper we address the issue related to privacy, security, complexity and Implementation, various adversaries exist which hamper the secure multiparty computation. In the secure multiparty computation, a set of parties wishes to jointly compute some function of their inputs. Such a computation must preserve certain security properties, like privacy and correctness, even if some of the participating parties or an external adversary colludes to attack the honest parties.
Different Types of Connected Spaces
Authors: Sattanathan M. , Sebastian Jomon K.
Published: June 2019

This paper deals with the various forms of open sets and their relations. The relation is represented by a diagram. The relation is same for the closed sets also. The main part defines different types of connectedness and their relations. It is notable that openness and connectedness are in opposite order. Some results on Q-sets are also included here.
Associate Ring Graphs
Authors: Subhakar M. James
Published: June 2019

R is a commutative ring with unity. The associate ring graph AG(R) is the graph with the vertex set V = R • {0} and edge set E = {(a, b) / a, b are associates and a ≠ b}. Since the relation of being associate is on equivalence relation, this graph is an undirected graph and also each component is complete. In this paper, I present some of the interesting results majority of which are for the ring of integers modulo n, n is a positive integer.
Rule Based and Supervisory Training Approach to Develop Expert System Tool for Detecting Lung Cancer Disease
Authors: Balachandran K. , Anitha R.
Published: June 2019

Knowledge-based expert systems, or expert systems, use human knowledge to solve problems that normally would require human intelligence. These expert systems represent the expertise knowledge as data or rules within the computer. These rules and data can be called upon when needed to solve problems. Lung cancer is one of the dreaded disease in the modern era. It is responsible for the most cancer deaths in both men and women throughout the world. Early diagnosis and timely treatment are imperative for the cure. Longevity and cure depend on early detection. This paper gives on insight to identify the target group of people who are suffering or susceptible to suffer lung cancer disease. Seeking proper medical attention can be initiated based on the findings. Expert system tool developed, to find this target group based on the non-clinical parameters. Symptoms and risk factors associated with Lung cancer are taken as the basis of this study. This expert system basically works on the rule based approach to collect the data. Then Supervisory learning approach is used to infer the basic data. Once sufficient knowledge base is generated the system can be mode to adopt in unsupervised learning mode.
Boundary Layer Impact on Mountain Waves across Western Ghats of India
Authors: Kumar Naresh , Mohapatra M. , Yadav B. P.
Published: June 2019

A two- layer model has been developed assuming a steady, non- rotating and frictionless flow of vertically unbounded Boussinesq fluid across 2-D profile of Western Ghats of India. Further, it is assumed that lower layer is inviscid with neutral stability (N=0) and upper layer has constant static stability with respect to height, given by N= Constant (where N is Brunt- Väisälä frequency). The analytical expressions for vertical velocities and mountain drag have been derived across Western Ghats of India. It is found that vertical velocities are dependent on the characteristics like size and height of ridge as well as plateau region to the eastern side of the Western Ghats. However, the mountain drag is not dependent on the above characteristics of the plateau region to the east of Western Ghats confirming the earlier findings.
Numerical Solution for Mixed Convection Heat Transfer from a Vertical Heated Plate Embedded in a Sparsely Packed Porous Medium
Authors: Nalinakshi N. , Dinesh P.A. , Shivakumara I.S. , Chandrashekar D.V.
Published: June 2019

An improved numerical study on mixed convection from a heated vertical plate embedded in a Newtonian fluid saturated sparsely packed porous medium is undertaken by considering the variation of permeability, porosity and thermal conductivity. The boundary layer flow in the porous medium is governed by Lapwood – Forchheimer – Brinkman extended Darcy model. Similarity transformations are employed and the resulting ordinary differential equations are solved numerically by using shooting algorithm with Runge – Kutta – Fehlberg integration scheme to obtain velocity and temperature distributions. Besides, skin friction and Nusselt number are also computed for various physical parameters governing the problem under consideration. It is found that the inertial parameter has a significant influence in decreasing the flow field, whereas its influence is reversed on the rate of heat transfer for all values of permeability considered. Further, the obtained results under the limiting conditions were found to be in good agreement with the existing ones.
Low Temperature Fluorination of Superconducting and Non-superconducting Compounds Using NH4F
Authors: Thomas George
Published: June 2019

Compounds Y1Ba2Cu3, Pr1Ba2Cu3O7 and La2CuO4 were fluorinated by a low temperature fluorination method using NH4F.The fluorinated samples were analysed by x-ray diffraction and resistivity measurements. The x-ray diffractogram of the fluorinated samples indicated broadening of the peaks. None of the fluorinated samples showed any superconducting behaviour.
Biologically Important Schiff Bases and Their Transition Metal Complexes
Authors: Datta Riya , V Ramya
Published: June 2019

Transition metal complexes with different ligand systems have been developed. Majority of them are derived from heteroaromatic cycles and Schiff bases of variety of aromatic aldehydes, diketones with amino acids, polyamines, N-aromatic cycles and ethylenediamines. Metal complexes of Schiff bases are used as polymers, dyes and in various biological systems. They show antimicrobial activity and can be used as suitable drug to treat bacterial and fungal infections. Most of the Cu, Ni and Co complexes are also capable of binding and cleaving DNA.
On the Nonlinear Stability of Inviscid Homogeneous Shear Flows in Sea Straits of Arbitrary Cross Sections
Authors: Ramakrishnareddy V , Subbiah M
Published: June 2019

In this paper we study the nonlinear stability of steady flows of inviscid homogeneous fluids in sea straits of arbitrary cross sections. We use the method of Arnol'd [1] to obtain two general stability theorems for steady basic flows with respect to finite amplitude disturbances. For the special case of plane parallel shear flows we find a finite amplitude extension of the linear stability result of Deng et al [2]. We also present some examples of basic flows which are stable to finite amplitude disturbances.
Antibandwidth of a Graph
Authors: Shastry Aditya , Khandelwal Nidhi
Published: June 2019

The antibandwidth problem consists of placing the vertices of a graph on a line in consecutive integer points in such a way that the minimum difference of adjacent vertices is maximized. This problem is NP- hard. In this paper, we find some bounds for antibandwidth using some invariants of graphs. We prove that considerating the interior boundary and the exterior boundary when estimating the antibandwidth of connected graphs gives the same results.
Mitigating Black Hole Attacks in AODV Routing Protocol Using Dynamic Graph
Authors: Pal Arunangshu , Choudhury Prasenjit
Published: June 2019

With the advancement of wireless technologies, Mobile Ad hoc NETwork (MANET) has been an important field of study. MANETs find useful applications in the real world, for example in military battlefield and disaster management. Since MANET is dynamic in nature, it must be represented by dynamic graph. Evolving graph, a form of dynamic graph, may be used for the purpose. When we talk about a network, a routing protocol comes into the question, and one of the most popular routing protocols is AODV. However, since AODV suffers from a drawback that it may be a victim of black hole attack, we need to find a technique to eliminate the possibility of the phenomenon. This paper makes a study of MANET and an efficient way of representing MANET by dynamic graph. It explains the AODV routing technique and the black hole attack. It then extends the idea of dynamic graph to propose a technique to solve the problem of black hole attack in AODV.
The Graphs Whose Sum of Global Connected Domination Number and Chromatic Number is 2n-5
Authors: G Mahadevan , Avadayappan A Selvam , Johns Twinkle
Published: June 2019

A subset S of vertices in a graph G = (V,E) is a dominating set if every vertex in V-S is adjacent to atleast one vertex in S. A dominating set S of a connected graph G is called a connected dominating set if the induced sub graph < S > is connected. A set S is called a global dominating set of G if S is a dominating set of both G and . A subset S of vertices of a graph G is called a global connected dominating set if S is both a global dominating and a connected dominating set. The global connected domination number is the minimum cardinality of a global connected dominating set of G and is denoted by γgc(G). In this paper we characterize the classes of graphs for which γgc(G) + χ(G) = 2n-5 and 2n-6 of global connected domination number and chromatic number and characterize the corresponding extremal graphs.
Electrical Conductivity of the Stratosphere
Authors: Nagaraja Kamsali , Pawar S D , Murugavel P , Gopalakrishnan V
Published: June 2019

Ionic conductivity of the stratosphere is one of the important parameters for understanding the electrical state of the region. This parameter is sensitive to the presence of aerosols and thus, aerosol loading on the stratosphere has a bearing on the conductivity. Preliminary efforts were made to study the behaviour of stratospheric ion conductivity and its variation under enhanced aerosol conditions by making use of an Ion-aerosol model. The aerosol ion-small ion recombination coefficient obtained from the model determines the extent to which aerosols can alter the conductivity of the stratosphere. This necessitates the requirement of experimental measurements of attachment and recombination coefficient along with simultaneously measured aerosol density to have the proper information on electrical conductivity of the region.
H-bonded Chains and Networks: A Recurring Feature in the Solid State Structures of Manganese (III) Carboxylate Schiff Base Complexes
Authors: Sasi Biny , S Swathy , V S Thampidas , Robert Pike D
Published: June 2019

Two new manganese(III) Schiff base complexes,  [Mn(salen)(m-NO2-C6H4CO2)(H2O)] (1) and  [Mn(msalen) (p-OH-C6H4CO2)(H2O)] (2), where H2salen = N,N'-bis(salicylidene)-1,2-diaminoethane, H2msalen = N,N'-bis (3-methoxysalicylidene)-1,2-diaminoethane were synthesized from the manganese (II) carboxylates.  Single crystal X-ray diffraction studies show that the Jahn-Teller distorted octahedral complexes are stabilized by              H-bonded chains and networks in the solid state.
Sterol Composition of the Indian Green Lipped Mussel Perna virdis
Authors: Anuradha V , Vineetha P V , Amruta Mano , Stephy P S , Byju K , Shameem K , Vasundhara G , Kuma N C , Nair S M
Published: June 2019

Sterol composition of green lipped mussel Perna virdis was analysed using GCMS. Cholesterol was found to be the dominant sterol (54.162% of the total sterol content). Other sterols such as Cholesta-5,22-dien-3-ol (3β), ergosta-5,22-dien-3-ol (3 β,22E, 24S),  26,26-dimethyl-5,24 (28)-Ergostadien-3β-ol, 26-nor-5cholesten- 3β-ol, stigmasterol and γ sitosterol were also detected. Presence of phytosterols like stigmasterol and γ sitosterol underlines high nutritional potential and food value of this bivalve mollusk.
Synthesis of a New Series of Quinolinoxymethylcoumarins as Potent Anticancer Agents
Authors: Shamala D , Shivashankar K , Vijaykumar Rasal P , Vineela Pandi
Published: June 2019

4-Bromomethylcoumarins (1a-f) were reacted with 8-hydroxyquinoline to yield quinolinoxymethylcoumarins (2a-f). The structure of all the synthesized compounds were confirmed by spectral studies and screened for their anticancer activities against Dalton’s Ascitic lymphoma (DAL) and Ehrlich Ascites Carcinoma (EAC) cell lines.  Out of these, compound (2b) (R = 6-OMe) was found to be the most potent cytotoxic compound against DAL and EAC cell lines.
Solutions of Graph Equations Involving Line, Middle and Mycielski Graphs
Authors: R. P. Raj H. P. Patil
Published: June 2019

Let
Synthesis and Characterization of Transition Metal Complexes of 2-Benzoylpyridine benzoylhydrazone
Authors: M C Vineetha P V Anila
Published: June 2019

Cobalt(II), zinc(II) and mercury(II) complexes have been synthesized by the reaction of cobalt chloride, zinc chloride, zinc bromide and mercuric chloride with 2- benzoylpyridine benzoylhydrazone and characterized by analytical and spectral studies .
Kinetics of Oxidation of Hexakis (P-chloroaniline) Cobalt (II) Chloride by Potassium Iodate
Authors: Edison B. , Peter S.
Published: June 2019

Vit B12 is an important complex of cobalt3 . The rate of oxidation of the Synthesized complex Hexakis(p-chloral aniline) cobalt((II) chloride follows first order kinetics with respect to the complex and oxidant potassium iodate1,2,4-8 in aqueous medium. Increasing in the concentration of complex solution increases the rate of the oxidation. The rate of the reaction is studied by changing the acid concentrations of the medium , by changing the temperature and by introducing the neutral salt (NaCl) in the Medium. From this study the kinetic parameters Ea, A,∆S#,∆G#,∆H# are found out. From the observed fats it is inferred that the reaction follows three steps.
A Bivariate Optimum Model on Recruitment and Promotion Based on Efficiency and Seniority
Authors: Jeeva M. , Rajagopal Rajalakshmi
Published: June 2019

In Manpower planning quantitative models have been used for predicting the future structure and cost associated with it, given the current structure and policies on promotion, recruitment and wastage. In this paper a bivariate model has been discussed on fresh recruitment's and promotion based on efficiency and seniority with the assumption on the maintainability of grade structure.
A Preliminary Study of Faunal Diversity in Madiwala Lake
Authors: Syama A. , Antony P. U.
Published: June 2019

The need to maintain and enhance the urban and suburban populations of wild life has greatly increased in recent due to c desire to observe wild life closer to home and c concern to protect the habitat from rapid urbanization (Shahn ef al ; 1974; Hoover 1976 j. There is an urgent need to foster wild life awareness ornong urban dwellers so that policies made for wild life protection issues can be better evaluated.
Gradient on Rayleigh–Bénard – Marangoni – Magnetoconvection in a Micropolar Fluid with Maxwell – Cattaneo Law
Authors: Kiran R V , Kalyani Attluri
Published: June 2019

The effect of non-uniform temperature gradient on the onset of Rayleigh-Bénard-Marangoni- Magneto-convection in a Micropolar fluid with Maxwell-Cattaneo law is studied using the Galerkin technique. The eigen value is obtained for rigid-free velocity boundary combination with isothermal and adiabatic condition on the spin-vanishing boundaries. A linear stability analysis is performed. The influence of various parameters on the onset of convection has been analyzed. One linear and five non-linear temperature profiles are considered and their comparative influence on onset is discussed. The classical approach predicts an infinite speed for the propagation of heat.  The present non-classical theory involves a wave type heat transport (Second Sound) and does not suffer from the physically unacceptable drawback of infinite heat propagation speed.
The Study of Navier Slip Condition on the Flow and Heat Transfer in a Coolant Surrounded an Exponentially Stretching Sheet
Authors: Manjunath S , Sreelakshmi D
Published: June 2019

The paper presents the study of velocity profiles in a hydrodynamic flow and heat transfer in a Newtonian fluid over an exponentially stretching sheet. Navier slip condition is used at the boundary. The stretching of the sheet is assumed to be nonlinearly proportional to the distance from slit. Non-linear partial differential equations characterize the flow phenomenon with boundary conditions in a semi infinite domain. The equations are transformed to nonlinear ordinary differential equations by applying suitable local similarity transformation. The series solution of the transformed equations are obtained by using differential transform method and Pade approximation with assistance from the shooting method in obtaining the unknown initial values. The solution is obtained in a power series with assured convergence. The effects of various parameters on velocity and temperature profiles are presented graphically.
The Effect of Heavy Metals on In Vitro Adventitious Shoot Production and Bacoside A Content in Bacopa Monnieri (L)
Authors: Manoj Godbole Poornananda Madhava Naik
Published: June 2019

In the present study the effect of heavy metals (MnSO 4, ZnSO 4 and CuSO 4 ) on adventitious shoot regeneration, biomass and bacoside A accumulation in Bacopa monnieri was carried out. The leaf explants were cultured on Murashige and Skoog (MS) medium supplemented with 2.0 mg l -1 kinetin (Kin) with varying concentration of heavy metals (Control: Mn-0.10 mM, Zn-0.03 mM and Cu- 0.0001mM; Mn: 0.20, 0.40, 0.80 and 1.60 mM; Zn: 0.06, 0.12, 0.24 and 0.48 mM; Cu: 0.02, 0.05, 0.10 and 0.20 mM). Optimum number of adventitious shoots (123.50 shoot/explants), fresh weight (3.826 g) and dry weight (0.226 g) of Bacopa monnieri were obtained in the medium with 0.12 mM Zn concentration. The highest production
Optical Properties of Erbium doped Molybdenum Tellurite Glasses
Authors: Eraiah B
Published: June 2019

The glasses with the composition of xEr 2 O 3 -5AgCl- 15MoO 3 -(80-x) TeO 2 (x = 0, 0.5 and 1 mol%, named as SMT0, SMT1 and SMT2, respectively) were synthesized using conventional melt quenching method and their optical properties were investigated through UV-Visible spectrophotometer. Density and molar volume values of the glass samples were estimated, their values were found in the range from 5.52 to 5.64 g/cm 3 and 27.737 to 28.689 cm 3 , respectively. The UV absorption spectra were recorded at room temperature in the wavelength range 200-1100nm. From the absorption edge data, it is found that both the direct and indirect type transitions may takeplace. The direct and indirect band gap values are ranging from 1.92 to 2.29 eV and 1.24 to 1.77 eV, respectively. Also, the Urbach energy (E tail ) values were determined and their values are ranging from 0.33 to 0.54 eV. These obtained E tail values are well matched with amorphous semiconductors (0.046 to 0.66 eV).
Miscibility of Starch and Low Molecular Weight Poly (ethyleneglycol) Blends in Aqueous Medium
Authors: V S Sumana , Y N Sudhakar
Published: June 2019

The miscibility of starch and poly(ethyleneglycol) (PEG)blends in water were investigated by viscosity, densityand refractive index studies. The physical interactionparameters like poly-solvent and blend-solvent have beencalculated using viscosity and density data. Starch/PEGblends were found to be miscible in all studied ratios. Thestudy also revealed that variation of temperature does notaffect the miscibility of starch and PEG blends in theaqueous solution significantly. The miscibility occurs dueto presence of hydroxyl-hydroxyl interactions in theblends. The result obtained reveals that PEG can beeffectively used as gelating agent in starch solution.Keywords: Miscibility, viscosity, polymer interaction, starch, PEG
The k-Local Colouring of Jahangir Graphs and Some Characteristics of the k-Locally Rainbow Graph
Authors: Daniel Esther , Srinivasan P
Published: June 2019

The k-local chromatic number of the Jahangir graphs and some characteristics of the k-locally rainbow graphs are studied in this article.
Connected Weak Edge Detour Number of a Graph
Authors: Prabakar J M , Athisayanathan S
Published: June 2019

Certain general properties of the detour distance, weak edge detour set, connected weak edge detour set, connected weak edge detour number and connected weak edge detour basis of graphs are studied in this paper. Their relationship with the detour diameter is discussed. It is proved that for each pair of integers k and n with 2 <= k <= n, there exists a connected graph G of order n with cdnw(G)=k. It is also proved that for any three positive integers R,D,k such that k >= D and R < D <= 2R, there exists a connected graph G with radD (G) = R, diamD G = D and cdnw(G)=k.
Analysis of electrical measurements oncadmium chloridedoped PVA-PVP blend
Authors: Baraker Basavarajeshwari M , Lobo Blaise
Published: June 2019

Films of Poly(vinyl alcohol) (PVA) - Poly(vinyl pyrrolidone) (PVP) blend, doped withcadmium chloride (CdCl2) from 0.5 wt% up to 40 wt% andprepared by solution casting method,were studied using temperature dependent direct current (DC)electrical measurements. The DC electrical data were analyzed using Variable Range Hopping (VRH) modelin the temperature range varying from 303K up to 318K. The Mott parameters are determined. The study of time evolution of current passing through the sample, when a constant voltage is applied across it reveals that ions are the majority charge carriers, but the role of electrons in charge transport cannot be neglected. The activation energy (Ea) for mobility of charge carriers has been calculated from VRHand Arrhenius models.
Cu(II), Cd(II) and Ni(II) Complexes of 5-Bromosalicylaldehyde-4-hydroxybenzhydrazone: Synthesis and Spectral Studies
Authors: Reji Geo , Amrutha P S , Greeshma M R , Tom Lincy , Kurup M R P
Published: June 2019

Four complexes of 5-bromosalicylaldehyde-4-hydroxybenzhydrazone were synthesized and characterized by elemental analyses, electronic, and infrared spectra.  In all complexes, hydrazone exists either in the neutral form, deprotonated monoanionic form or in dideprononated dianionic form.  Structures were assigned to all the complexes based on the physico-chemical studies.
Hall Effect on Two-Phase Laminar Boundary Layer flow of Dusty Liquid due to Stretching of an Elastic Flat Sheet
Authors: Mahanthesh B
Published: June 2019

The present investigation is concerned with the effect of Hall current on boundary layer two-phase flow of an electrically conducting dusty fluid over a permeable stretching sheet in the presence of a strong magnetic field. The boundary layer approximation is employed for mathematical modeling. The governing partial differential equations are reduced to a set of ordinary differential equations using suitable similarity transformations. Subsequent equations are solved numerically by using Runge-Kutta-Fehlberg fourth-fifth order method. A comprehensive parametric study is conducted to reveal the tendency of solutions. It is found that the mass concentration of dust particles can be used as a control parameter to control the friction factor at the sheet. The influence of suction and injection are opposite on the momentum boundary layer growth.
Recalcitrant Seed Storage Behaviour of Tropical Forest Tree Species
Authors: Pratibha K.
Published: June 2019

Forest wealth plays an important role in a country's economic and ecological sta bility. Forests Of tropical countries are declining of an alarming speed due to the interference Of many factors urbanization, industrialization etc. Ecch r 16 mill ion hectares Of virgin forests are cut and burnt. Tropical forest, o storehouse o' Biodiversity for of the world. Indio possesses almost entire range of tropical forest, from dry deciduous to wet evergreen. There is an imbalance in the environment due to deforestation and nudation.
Evolution of Ideas ...as a source of impressive communication
Authors: Nagaraju M. R.
Published: June 2019

Popular science communication hos to be interesting, but science teaching has to be interesting and impressive, that the element of retention is high. Proof Of any effective cornmunicction is active participation. This can be achieved by taking into account, the five components of communication, denoted by the acronym STEEP S: Students — t;enogers T: Topics — Science E: Evaluation Systern E: Employer's needs/competitive emms p: parents
Innovative Methods in the Teaching Learning Process of Basic Sciences
Authors: B. Nagaveni , D'Souza M. Prem
Published: June 2019

"The classroom is now a vital struggle for survival With the immensely persuasive 'outside world' created by new informational medic. Education must shift from instruction, from imposing of stencils, to discovery — to probing and exploration and to the recognition of the language Of fortns.•- Herbed Marshall McLuhan. Realizing the tremendous responsibility Of higher educctic•n towards the learner, the teacher creates a conducive climate to learning. The environment nurtures the learning behavior in a more permanent way When it is learner centered. Each subiect has its intrinsic value and no one can.say we do not use basic sciences in Our day to day living. Biology teaches us many lessons in physiology, biochemistry, heredity ond evolution, which need to be remembered beyond the classroom and the examination hall.
A Study of Streamlines in Second Grade Fluid Flows
Authors: Bagewadi C. S. , Bhagya S.
Published: June 2019

We obtain solutions for second grade fluid in (φ,φ) net where φ(x,y)= constant, an arbitrary family of curves and φ(x,y)= constant, stream lines. Further exact solutions are determined when the stream line patterns are of the form (y-g(x))/(f(x)) = constant or (x-k(y))/(m(y)) = constant. φ
Modified Second Order Slope Rotatable Designs using Symmetrical Unequal Block Arrangements with two Unequal Block Sizes
Authors: Victorbabu B. Re.
Published: June 2019

In this paper, a new method of construction of modified second order slope rotatable designs using symmetrical unequal block arrangements with two unequal sizes are constructed.
Hemicellulases Production by Aerobic Fungi using Banana Plant Substrate Residue as Substrate
Authors: Singh Ranjeet , Mandal S. K.
Published: June 2019

Hemicellulases Production by Aerobic Fungi using Banana Plant Substrate Residue as Substrate
Klein Paradox for Bound States - a Puzzling Phenomenon
Authors: Rao Nagalakshmi A. , Kagali B. A.
Published: June 2019

While Klien paradox is often encountered in the context of scattering of relativistic particles at a potential barrier,we presently discuss a puzzling situation that arises with the Klien-Gordon equation for bound states. With the usual minimal coupling procedure of introducing the interaction potential, a paradoxical situation results when the "hill" becomes a "well" ,simulating a bound state like situation.This phenomenal phenomenon for bound states is contrary to the convectional wisdom of quantum mechanics and is analogous to the well-known Klien paradox,a generic property of relativistic wave equation.
Xylanase Production in Submerged Fermentation by T. Longibractium MTCC-936
Authors: Singh Ranjeet , Mandal S. K.
Published: June 2019

Two thermophilic strains of fungi T.longibroctium MTCC 936 andT. harzimum MTCC 792 were examined for their ability to produceXylanose in submerged fermentations. The higher enzyme odivity 27.02 was obtained in submerged fermentation by T.longibroctium. The optimum yield of xylonase was obtained with xylan as a substrate along with combination of three nitrogen sources (Urea,(NH4)2SO4 and Bodopeptone 0.1% each) of pH 6 and temperature 55°C. This enzyme was purified by salt precipitation and ultra filtration technique.
Investigation on Liquid Crystalline Systems
Authors: S. Manu , Francis Fyna , Scaria Tobin
Published: June 2019

The results of experiments carried out by us on two samples exhibiting a macroscopic helical structure.While one of them shows a direct transition from chiral orientationally ordered fluid(referred to an N* phase) to a phase with one dimensional layer structure,the second sample exhibits a liquid crystal analog of the Abrikosov flux lattice of super conductors,between the N* and layered phase.The chapter compares and contrasts the differences in the behavior of the two compounds.
Dimensions of Epistemology and the Case for Africa’s Indigenous Ways of Knowing
Authors: Udefi Amaechi
Published: June 2019

philosophical practice has taken a new turn since it survived the large scale problems and debates which characterized its early beginnings in an African environment and intellectual community. The metaphilosophical issues then concerned about its status, relevance and methodology appropriate or usable for doing it. Although the issues that troubled African philosophers then may have subsided, yet some of them have and are still expressing reservations on the possibility of having Africa‟s indigenous ways of knowing, just as they deny the possibility of „African physics‟ or „African arithmetic‟. Paulin Hountondji, a leading African philosopher, is reputed for denying African traditional thought as philosophy, which he prefers to type as ethnophilosophy, simply because it thrives on orality and other ethnographical materials like proverbs, parables, folklores, fables, songs etc. For him, the piece, at best can qualify as ethnographical or anthropological monographs as opposed to philosophical work which relies on written texts and documentation on the basis of which “theoretical knowledge and significant intellectual exchange and innovation can” be achieved in Africa. Hountondji‟s position is, to say the least, exclusionist, since it denies and debars African modes of thought and heritage a position in the on-going philosophical conversation or discourse. The paper shares Hountondji‟s vision of adoption of an attitude of critical, scientific and skeptical orientation in African societies. However, it rejects the views of Hountondji and other scholars who deny African intellectual and cognitive systems and argues that their position rests on one sided conception or dimension of epistemology. The other intention of the paper is to show that philosophical practice is as old as the history of mankind in Africa, though Hountondj has expressed the view that philosophy as an academic discipline started in African Universities only in the 1960’s and 1970’s.
Theory of statistics
Authors: Громыко Галина , Gromyko Galina , Воробьев Александр , Vorobyev Alyeksandr , Иванов Юрий , Ivanov YUriy , Казаринова Светлана , Kazarinova Svyetlana , Карасева Лариса , Karasyeva Larisa , Мамий Ирина , Mamiy Irina , Матюхина Ирина , Matyukhina Irina , Охрименко Алексей , Ohrimenko Aleksey
Published: June 2019

The textbook deals with a wide range of issues of statistical methodology: the organization of statistical observation, data processing and analysis. Special attention is paid to statistical methods of analysis of variational series and series of dynamics, selective observation, study of correlation, index method. The Appendix contains the basic formulas and mathematical tables used in the analysis of statistical data and testing various hypotheses.
For students and teachers of economic universities and faculties.
Editorial: un nuevo periodo en la revista Avances en Psicología Latinoamericana (2016-2020)
Authors: Gutierrez-Peláez Miguel , Ramírez Luisa Fernanda
Published: June 2019

La revista Avances en Psicología Latinoamericana ingresa en una nueva etapa. Durante el periodo 2016-2020 asumiremos Miguel Gutiérrez-Peláez como director y Luisa Fernanda Ramírez como editora general. En su último editorial, AndrésPérez-Acosta y Gladys Martínez (2015) presentaron de manera clara la historia de esta revista y los logros alcanzados durante su gestión. Los retos para el nuevo equipo editorial no son pocos; pero con el apoyo, el impulso y la orientación que losequipos anteriores le han dado a la revista, asumimos la misión de seguir posicionándola como un referente de consulta científica para el gremio de la psicología en Latinoamérica y en el mundo.
Un arte con machete. Comentario sobre la obra de Alonso Jiménez
Authors: Gutierrez-Peláez Miguel
Published: June 2019

Con Alonso Jiménez hemos podido conversar sobre la anécdota que trae Umberto Eco a propósito del retrato que le realiza Pablo Picasso a la poeta estadunidense Gertrude Stein. Terminando el retrato, un observador lo increpa y le dice: “Perono se parece”, a lo que Picasso responde: “Pero se parecerá”. Hay múltiples efectos que se extraen de esta anécdota. Por un lado, el más evidente, es que nadie se acordará de cómo era Gertude Stein, pero todos podremos tener clara la imagen del retrato que hizo de ella Picasso.
A morte saiu à rua
Authors: Ferreira Pedro Lopes
Published: June 2019

O objetivo principal deste artigo é demonstrar a evidência que já existe no contexto português da avaliação de estados de saúde piores que morte. Pretende‑se também fazer uma reflexão pessoal sobre o estado atual da literatura sobre a medição destes estados de saúde e elencar alguns problemas existentes de natureza metodológica. Este tipo de estados de saúde existe de facto e é apercebido e compreendido pelos doentes e pela população em geral. Várias são as técnicas utilizadas para a determinação das preferências cardinais para estados de saúde piores que morte e a sua utilização é hoje corrente em avaliações custo‑efetividade ou custo‑utilidade. No entanto, a medição de preferências para estados de saúde piores que morte está ainda numa fase inicial de desenvolvimento, mantendo‑se a necessidade de técnicas de elicitação provavelmente mais válidas e fiáveis. É essencial aprofundar a discussão sobre o conceito de estado de saúde pior que morte.
Androcentrismo y espacio público: análisis exploratorio sobre la subrepresentación femenina en la nomenclatura urbana de la Ciudad Autónoma de Buenos Aires
Authors: Cavalo Lucía Elena
Published: June 2019

Con el advenimiento del orden industrial moderno, el espacio público quedó instituido como una esfera de dominio masculino. En concordancia, a lo largo de la historia, las ciudades fueron marcadas material y simbólicamente por aquellos varones que constituyen el centro hegemónico de la vida social y que han asumido el espacio público como propio. Asumiendo que las ciudades constituyen verdaderos macrotextos susceptibles de ser leídos e interpretados, este estudio ofrece un primer acercamiento a las maneras en que las asimetrías de género persistentes en nuestras sociedades encuentran continuidad en la trama simbólica de las ciudades. Con este propósito, se presenta un análisis cuantitativo de la nomenclatura urbana de la Ciudad Autónoma de Buenos Aires que, asumiendo una perspectiva de género, indaga los modos y grados en que las mujeres encuentran acogida en los nombres de las calles de esta ciudad.
Análisis de los avisos de la AEMET en la provincia de Sevilla entre los años 2011 y 2017
Authors: Peñuela Palma Andrés , Vallejo Villalta Ismael , Camarillo Naranjo Juan Mariano
Published: June 2019

Los riesgos meteorológicos se pueden predecir con horas e incluso días de antelación. La AEMET ha desarrollado una serie de planes que ponen en alerta a la población civil ante la llegada de fenómenos meteorológicos adversos (FEMA), siendo el último de ellos el METEOALERTA versión 7, de junio de 2018. En ellos se definen los fenómenos que pueden causar alertas, así como los umbrales y zonas de avisos.El presente trabajo recoge todos los avisos por FEMA emitidos por la AEMET para las tres demarcaciones sevillanas, Campiña, Sierra Norte y Sierra Sur, entre los años 2011 y 2017. Además de analizar la serie de avisos y sus principales características para cada tipo de fenómenos y para cada zona, se ha procedido a una comparación con los datos reales observados durante el mismo periodo en una serie de estaciones meteorológicas repartidas por la provincia. A partir de esta comparación se han analizado dos tipos de situaciones que incluyen aquellas en las que la observación alcanza o supera el umbral que contempla un nivel de aviso determinado, y aquellas otras en las que dicho umbral no se alcanza. Los resultados obtenidos, que no se consideran concluyentes, muestran unas diferencias destacables entre los valores observados y los pronosticados, diferencias que además resultan variables en relación a los tipos de fenómenos contemplados y a las zonas de aviso. Estos resultados preliminares se han considerado como un estímulo para desarrollar y profundizar en esta línea de trabajo.
Análisis de los retos de gestión del paisaje del Bien Pirineos-Monte Perdido tras dos décadas inscrito en la Lista del Patrimonio Mundial de UNESCO (1997-2018)
Authors: Gurrutxaga San Vicente Mikel , Porcal-Gonzalo María C.
Published: June 2019

Se realiza un análisis sobre los retos de gestión paisajística que presenta actualmente el Bien transfronterizo Pirineos-Monte Perdido, inscrito en la Lista del Patrimonio Mundial de UNESCO desde 1997. Para ello se analizan los informes de seguimiento sobre el estado de conservación del Bien que ha elaborado periódicamente el Centro del Patrimonio Mundial, así como las decisiones aprobadas por el Comité del Patrimonio Mundial referidas a las medidas a adoptar para corregir los problemas detectados. El análisis bibliográfico, cartográfico y estadístico completa el procedimiento metodológico empleado. Se identifican dos retos principales. El primero radica en aumentar la coordinación entre España y Francia, que se concrete en la aprobación de un Plan de Gestión del Bien. El segundo consiste en establecer medidas eficaces para mantener la actividad pastoril trashumante y el paisaje cultural asociado, como atributo fundamental del Valor Universal Excepcional del Bien. Debido a la complejidad de este propósito, se identifican los principales obstáculos sociales, económicos y administrativos a superar. Se concluye que para favorecer el pastoreo y conservar el paisaje cultural del Bien resulta imprescindible adoptar una visión territorial de conjunto, plasmada en una política integral e intersectorial al efecto y dotada de medios económicos y técnicos adecuados.
Reforestación, silvicultura e incendios forestales en la dinámica del paisaje del Espacio Natural de Sierra Nevada (1881-2018)
Authors: Mesa Garrido Miguel Ángel
Published: June 2019

El desarrollo del Plan General de Repoblación Nacional de 1939 consiguió reforestar en España más de tres millones y medio de hectáreas en los primeros cincuenta años. En la provincia de Granada, entre los años 1949 y 1974, fueron repobladas un total de 125.619 ha, y de ellas, cerca de 42.482 ha se emplazaron en el Espacio Natural de Sierra Nevada. Este proceso produjo modificaciones en los usos del suelo y especialmente sobre la vegetación y el paisaje, al realizarse tratamientos silvícolas en más de la mitad del área (22.257 ha). Los incendios forestales también dejaron su huella, resultando incendiadas en el último periodo más de 14.000 ha. El incremento de biomasa y la alta capacidad de regeneración vegetal provocaron una alta frecuencia de incendios sobre los bosques. En este contexto, la intervención forestal basada en repoblaciones, claras y clareos, cortafuegos e infraestructuras realizadas en los montes, además de los incendios forestales, son clave en la dinámica del paisaje de Sierra Nevada a lo largo de la última centuria. En este trabajo se analiza el alcance de la intervención repobladora y sus resultados, la silvicultura sobre los extensos pinares de repoblación, las infraestructuras basadas en caminos forestales y cortafuegos y la frecuencia de los incendios forestales y su reforestación, que interactúan en la dinámica del paisaje del Espacio Natural de Sierra Nevada.
Evaluation of phytochemical constituents and sedative-hypnotic activity of the methanol leaf extract of Ficus exasperata in mice
Authors: Mikail Hudu Garba , Akumka David Dezi , Adamu Mohammed , Zaifada Aishatu Ummi
Published: June 2019

Background and Aim: Sedative drugs mostly cause dose-dependent depression of the central nervous system which results in hypnosis and anesthesia possibly; however, these agents are associated with some side effects ranging respiratory, digestive, immune system dysfunctions, tolerance, cognitive function deterioration, and physical dependence; hence, investigations of newer and safer agents are, therefore, imperative. The current study was aimed at investigating the sedative-hypnotic (S-H) effects of the methanol leaf extract of Ficus exasperata in mice. Materials and Methods: Phytochemical screening of the leaf extract was conducted, and S-H activity of the plant extract was evaluated. Twenty Swiss Albino mice were randomly divided into four groups of five mice each. The mice in Groups A and B were injected with the extract intraperitoneally (IP) at the dose rate of 100 and 200 mg/kg, respectively, those in Group C were injected with xylazine at the dose rate of 10 mg/kg, while Group D mice received distilled water at the dose rate of 2 ml/kg. All the four experimental groups were injected with ketamine (IP) at the dose rate of 100 mg/kg after 30 min. Results: Phytochemical analysis of the extract revealed the presence of carbohydrates, cardiac glycosides, reducing sugars, steroids and triterpenes, saponins, tannins, condensed tannins, and flavonoids, while anthraquinones, anthracene derivatives, and alkaloids were absent. Results from the S-H evaluation show no significant difference (p≥0.05) on the onset of sleep time between the four experimental groups; however, statistically significant difference (p≤0.05) was recorded in the sleep duration time between the groups treated with only ketamine and the other experimental groups pre-treated with either the extract or xylazine before ketamine administration. The group pre-treated with a high dose of the plant extract (200 mg/kg) and the treated with ketamine after 30 min exhibited longer sleeping duration time. The plant extract, xylazine and ketamine, sedated the mice for some period of time after arousal from sleep. Conclusion: Our finding suggests that methanol leaf extract of F. exasperata possesses S-H potential that may require further scientific investigations.
Imprensa, modernização e sensibilidades: Atraso, abandono e (iso)lamento no norte de Goyaz (1905-1925)
Authors: Radamés Vieira Nunes
Published: June 2019

No norte goiano, nas primeiras décadas do século XX, as sensações de atraso, isolamento e abandono, exploradas pelo periódico da Tipografia Nortense, formam o tripé para toda obra que ajudou, entre outras coisas, a sustentar o norte goiano como região e na construção identitária da sua população. Nossa proposta é compreender como esse tripé de sensações foi levado ao paroxismo pelo proprietário do jornal Norte de Goyaz, Francisco Ayres, com o objetivo de ensejar desejos, temores e esperanças em seus (e)leitores. Para adentrar nestes aspectos, teceremos anteriormente, algumas considerações sobre o uso da imprensa como fonte nessa empreitada.
Inimigos Artificiais: 1968 nas crônicas de Carlinhos Oliveira e Nelson Rodrigues
Authors: Jean Carllo de Souza Silva
Published: June 2019

Este artigo trata brevemente sobre 1968 na perspectiva dos cronistas Carlinhos Oliveira e Nelson Rodrigues. Pretendemos com isso salientar como cada qual em um veículo, cada qual com perspectivas políticas e expectativas acerca do presente e do futuro distintas, cada qual entrincheirado em suas compreensões sobre o existir e o viver e, claro, a defender o seu quinhão no campo da intelectualidade perceberam e narraram alguns acontecimentos de um ano que se tornou emblemático para a memória social do século XX.
“Do samba e do amor, do sambista e do pai-de-santo”: interações e sentidos entre carnaval e afro religiosidade no bairro da Pedreira (1980-1990)
Authors: Juliana dos Santos Carvalho
Published: June 2019

Este artigo tem por objetivo analisar aspectos do mundo carnavalesco da cidade de Belém, com ênfase nas atividades festivas do bairro da Pedreira entre 1980 e 1990 observando quais as interações existentes entre o carnaval e a afro religiosidade no referido bairro. A partir das narrativas orais dos participantes de agremiações de carnaval, e de sujeitos do santo, (adeptos das religiões afro) e consultas a jornais de circulação na cidade é possível visualizar contribuições, sentidos e interações/trânsitos entre carnaval e religiosidade antes e durante os desfiles das Escolas de Samba. A partir dessas referências, observo como estes grupos evocam e redimensionam marcas identitárias do bairro da Pedreira, conhecido popularmente como bairro do samba e do amor.
Case-based Perspective-Taking as a Mechanism to Improve Metacognition and Higher-Level Thinking in Undergraduate Speech-Language Pathology Students
Authors: Vinney Lisa A. , Friberg Jennifer C. , Smyers Mary
Published: June 2019

This case study addressed the authors’ efforts to design an 8-week small-group independent study (IS) experience that facilitated undergraduate speech-language pathology students’ (n=19) higher-level thinking and overall metacognitive awareness. We hoped to encourage both in order to improve students’ overall cognitive growth while enhancing their reflection about and knowledge of professional perspectives regarding the assessment and treatment of laryngeal cancer. To take on this challenge, we combined case-based learning (CBL) and perspective-taking (PT) pedagogies across the IS. Students completed the Metacognitive Awareness Inventory (MAI) pre- and post-IS, and written reflections after each of eight weekly discussion meetings. The MAI was quantitatively analyzed, while reflections were qualitatively coded using Bloom’s taxonomy. Findings indicated that metacognitive awareness significantly improved and that higher-level cognitive processing was increasingly evidenced across students’ IS experience. Results indicate the potential to maximize metacognition and cognitive processing by combining CBL and PT by the methods used here. Applications of combined CBL and PT to other disciplines and teaching and learning situations will be discussed along with the implications of our findings.
Protective Effects of Olea europaea Fruit Extracts on Metabolic Disorders Associated With Sucrose-Induced Metabolic Syndrome in Rats
Authors: Ahangarpour Akram , Ramezani Ali-Akbari Fatemeh
Published: June 2019

Background: Metabolic syndrome (MetS) increases the risk of diabetes. Olea europaea fruit exerts protective effects on metabolic disorders. Therefore, the aim of the present study was to investigate the effect of O. europaea fruit extracts on sucrose-induced MetS in rats. Methods: Male adult Wistar rats (200±50 g, n=32) were randomly divided into four groups (n=8) consisting of control group, untreated sucrose group (sucrose 50% in drinking water for 10 weeks), sucrose plus aqueous extract of O. europaea fruit treated group (200 mg/kg) and sucrose plus hydroalcoholic extract of O. europaea fruit treated group (200 mg/kg) by gavage for 2 weeks. Body weight, serum glucose, insulin, leptin, lipid profile, homeostatic model assessment of insulin resistance (HOMA-IR) and hepatic enzymes were measured. Data were analyzed by one-way analysis of variance (ANOVA, SPSS, 16.0). P<0.05 was regarded as significance level. Results: The aqueous extract exhibited higher protective effects on serum glucose, insulin and HOMA-IR than hydroalcoholic extract (P<0.05). Body weight, serum glucose, leptin (P<0.01), insulin, triglyceride, very-low-density lipoprotein cholesterol (VLDL-C), HOMA-IR, alkaline phosphatase (ALP), (P<0.001) and aspartate aminotransferase (AST) (P<0.05) significantly elevated but high-density lipoprotein cholesterol (HDL-C) (P<0.05) decreased in the sucrose group. Aqueous extract of O. europaea fruit significantly improved blood glucose, triglyceride, VLDL-C (P<0.01), insulin, HOMA-IR, ALP (P<0.001), body weight, AST and leptin (P<0.05) levels. Hydroalcoholic extract of O. europaea fruit significantly restored insulin, HOMA-IR (P<0.01), ALP (P<0.001), body weight, leptin, VLDL-C, triglyceride, blood glucose and AST (P<0.05). Conclusion: Our results indicated O. europaea fruit extracts could improve metabolic disorders induced by MetS in the rats.