Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2733

SRE Articles

September 2013

Salient features of vector control in AC motor drives: A review

This paper presents a review of vector control methods for AC drives for the last decade. A variety of techniques with different concepts are mentioned for the control of induction motors (IMs), permanent magnet synchronous motors (PMSMs), double fed induction generators (DFIGs) and switched reluctance motors (SRMs). Vector control has advanced its concept to AC drives for high performance applications with the help of...

Author(s): Sarat Kumar Sahoo and A. Ramulu

September 2013

Field-programmable gate array (FPGA)-based designed using VHDL hardware description language transmission performance analysis of binary phase shift keying (BPSK) and quadrature phase shift Keying (QPSK) modulators

Binary phase shift keying (BPSK) and quadrature phase shift Keying (QPSK)modulation techniques are often proposed for satellite communications and band-limited communication channels; however, both modulations are important in high speed data communications. High speed data communications are implemented on high speed hardware in wireless systems. The paper presents the design of a QPSK and BPSK...

Author(s): Mehmet SÖNMEZ and Ayhan AKBAL

September 2013

Implementation of Fourier Expansion Based Differential Quadrature Method (FDQM) and Polynomial Based Differential Quadrature Method (PDQM) for the 2D Helmholtz Problem

The polynomial-based differential quadrature method (PDQM) and Fourier expansion-based differential quadrature method (FDQM) are examined to solve 2D Helmholtz problem expressing definition of many electromagnetic problems. PDQM and FDQM solution of the problems were calculated and compared, analytically. While grid node and wave number are steady, the PDQM and FDQM were applied to 2D Helmholtz problem for calculation...

Author(s): Ahmet Rifat GORGUN, Sukru OZEN and Selcuk HELHEL

September 2013

Comparison of design alternatives generated by computer aided design and user expectations from small urban spaces

This study investigates the compliance of alternative design models based on perception of designer and users by creating 3D models of the fields before construction. The application part of this work presents 4 different ground cover materials, modeled on the computer, that were proposed for 2 predetermined small urban areas to apply the design in the highest demand. Questionnaire participants were then asked to...

Author(s): Buket Özdemir Işık and Öner Demirel

September 2013

Artificial neural network approach to buckling coefficients of laminated orthotropic rectangular plates with a centrally rectangular hole

The objective of the present study is to describe the results of research that has been conducted on the buckling behavior of rectangular laminated orthotropic plates that have a rectangular hole. As a result of using some geometrical holes which cause stress concentrations on laminated orthotropic plates, the analysis about the buckling coefficient of the elements become very important. This work deals with buckling...

Author(s): Mehmet Fatih Altan

September 2013

Chemokine receptor 3 (CXCR3) and its ligands contribution to virus-induced acute hepatic failure

The role of chemokines in virus-induced acute hepatic failure is not well defined. In this study, we investigated the role of CXC chemokine receptor 3 (CXCR3) and its ligands chemokine Mig/CXCL9 (monokine induced by IFN-gamma) and IP-10/CXCL10 (interferon-gamma-inducible protein 10) in the recruitment of intrahepatic lymphocytes and subsequent acute hepatic failure. Balb/cJ mice (6 to 8 weeks, female) were...

Author(s): Yong Zou , Junjie Bao and Yuesi Zhong

September 2013

Morphotaxonomic evaluation of the relationship between four species of Crassocephalum (Moench.) S. Moore (Asteraceae) in southwestern Nigeria

The morphotaxonomic identity of Crassocephalum biafrae (Oliv. & Hiern.) S. Moore was compared with other three taxa namely: Crassocehalum crepidioides (Benth.) S. Moore, Crassocephalum rubens (Juss.ex.Jacq.) S. Moore and, Crassocephalum togoense C.D. Adams in the genus Crassocephalum tribe Senecioneae; with the intent of establishing some delimiting...

Author(s): A. S. OYELAKIN and M. S. AYODELE

August 2013

Ocean wave energy – An option for Nigerian power situation

As energy presents itself in various forms, here we will be looking at it from the perspective of wave energy. This paper investigates wave theory and use of some forms of mechanical wave fronts to generate electrical energy. A major means of production of these waves is discussed - being the wave front from the ocean, which is presently a source of worry to the people of Lagos State, Nigeria. These wave fronts from the...

Author(s): Collins Neku NWAOKOCHA and Abayomi Temitope LAYENI

August 2013

Improved (G’/G)- expansion method for constructing exact traveling wave solutions for a nonlinear PDE of nanobiosciences

In the present paper, the improved (G’/G) - expansion method combined with suitable transformations is used to construct many exact solutions involving parameters of a nonlinear equation describing the nano-ionic currents along microtublues. As a result, hyperbolic function solutions, trigonometric function solutions and rational function solutions with parameters are obtained. When these parameters are taken...

Author(s): Elsayed M. E. Zayed, Yasser A. Amer and Reham M. A. Shohib

August 2013

Impact of computer graphics on the engineering product design: Conceptual analysis

Computer graphics matured over many years and played an important role in the development of engineering products like automotive and aircraft components. The current CAX (CAD/CAM/CAE) tools use computer graphics extensively, while helping in conceiving better designs with improved quality. Nowadays, engineering product development is being done concurrently and collaboratively, due to the advances in computer graphics....

Author(s): Osama Harfoushi, Ruba Obiedat, Rizik Al-Sayyed and Bashar Al-Shboul

August 2013

Diagnosis and recommendation integrated system (DRIS) model establishment for diagnosing Sorghum (Sorghum bicolor) nutrient status in Benin (West Africa)

The Diagnosis and Recommendation Integrated System (DRIS) is a potential method for interpreting plant foliar nutrient composition. It provides a reliable means of linking leaf nutrient concentrations to the yield of sorghum, and has been developed for this crop using experimental data from organic and inorganic trials carried out in the Upper Catchment of Benin. Grain yield and leaf nutrient concentration were used to...

Author(s): Gustave D. Dagbenonbakin, Valentin Kindomihou, Emile C. Agbangba, Nestor Sokpon and Brice Sinsin

August 2013

An inverse feedback fuzzy state space modeling (FFSSM) for insulin-glucose regulatory system in humans

The complexity and nonlinearity of the insulin-glucose regulatory system in humans demands for an inverse modeling technique. In this study the insulin-glucose regulatory system was modeled with the help of an inverse feedback fuzzy state space modeling (FFSSM) approach. The feedback insulin regulatory system was presented as a state space model, its input/output parameters fuzzified and the optimized values...

Author(s): Izaz Ullah Khan,, Tahir Ahmad, and Normah Maan,

August 2013

A robust digital watermarking technique based on feature and transform method

This paper proposed a new robust digital watermarking technique with an aim of image protection. The proposed technique incorporates both the transform and feature methods. Initially, the Harris Laplacian detector extracts the features from the cover image that suites well for the watermarking. The extracted characteristic regions are grouped to form a primary feature set where the secret message is embedded to form a...

Author(s): A. Umaamaheshvari and K. Thanushkodi

August 2013

Aircraft noise pollution assessment of Port Harcourt International Airport, Omagwa, Rivers State, Nigeria

An expressive survey, measurement and analysis of aircraft noise pollution assessment at the Port Harcourt International Airport, Omagwa, Rivers State, Nigeria has been performed. The study collaborated both sound levels and environmental pollution of aircrafts noise impact on the communities. Physical/acoustic measurements of the airport were carried out through the use of a BK Precision digital sound level meter....

Author(s): Ogobiri, Godwin Ebikabowei, Owate, Israel, Avwiri, Gregory Onomakereand Mebine Promise

August 2013

A combinatorial approach to human face recognition and expression identification

A new integrated approach to human face recognition and expression identification based on Gray Level Co-occurrence Matrix (GLCM) technique that will be useful for  Human Face Recognition and Feature Extraction system based on Local Ternary Pattern (LTP) for expression identification was introduced. It applies GLCM operation to extract the features of facial images to different classes for the purpose of image...

Author(s): M. Madhu and R. Amutha

August 2013

Placement of distributed generation units using multi objective function based on SA algorithm

This article presents an optimal placement method in order to size and sit distributed generation in IEEE 33 bus test system. The algorithm for optimization in this paper is Simulated Annealing. The proposed objective function considers active power losses of the system and the voltage profile in nominal load of system. In order to use Simulated Annealing algorithm, at first, placement problem is written as an...

Author(s): Mohammad Salehi Maleh, Ramtin Rasouli Nezhad and Noradin Ghadimi

August 2013

Efficiency of slash bundling in mature coniferous stands

The biomass of forests is one of the oldest and most popular sources of renewable energy. Aside from round wood, logging residue is also being used with increasing frequency to produce energy. Under European conditions, the most frequently implemented technology of using logging residue is chipping, either directly at the cutting site or at the forest roadside. However, for over a dozen years now, with more and more...

Author(s): Tadeusz Moskalik, Jarosław Sadowski, Wojciech Sarzyński and Dariusz Zastocki

August 2013

Open sources three-dimensional ultrasound volumetric rendering in object oriented approach

On account of the advanced technology in recent years, the increasing demand for an effective medical imaging system has addressed its significance in diagnosis especially in the development of three-dimensional medical image reconstruction. Based on literature revise on various computational investigated, none of them show efficiency in terms of cost and computing performance. Owing to this fact, a method of 3D...

Author(s): Lai Khin Wee, Hum Yan Chai and Eko Supriyanto

August 2013

Stability analysis for a turbocharger rotor system under nonlinear hydrodynamic forces

Turbocharger is a high speed rotor system supported by a pair of floating ring bearings which comprise of double oil films. The stability of its rotor system is governed by not only the structure of the rotor but also by the nonlinear hydrodynamic force of two oil films. In this paper, a lumped dynamics model is developed for a turbocharger rotor system. In order to investigate the nonlinear behavior of the rotor...

Author(s): Hao Zhang, Zhanqun Shi, Shunxin Zhang, Fengshou Gu and Andrew Ball

August 2013

Smart structures and material technologies in architecture applications

Smart structures and material technologies are a tool for sharing the knowledge of how various building materials can significantly increase production and profit using advanced communication, collaboration and management technologies. The paper provides an overview of the types of materials available giving a new insight into innovative methods and techniques that will be available, and open new doors for advancement...

Author(s): Sherif Mohamed Sabry Elattar

August 2013

A collection of new preconditioners for solving linear systems

In this paper, new preconditioners from class of (I+S)-type for solving linear systems are developed and preconditioned, accelerated overrelaxation (AOR) method is used for the systems. The proposed algorithms have a simple and graceful structure. Asymptotic convergence of the sequence generated by the methods to the unique solution of linear systems is proved, along with a result regarding the convergence rate of the...

Author(s): H. Saberi Najafi and S. A. Edalatpanah,

August 2013

On meromorphic functions with fixed residue defined using convolution

In this paper, we introduced a new subclass of meromorphic functions with residue, which is defined by means of a Hadamard product (or convolution). Then we determine some properties such as coefficient bound, distortion theorems, radius of starlikeness and convexity for this class.   Key words: Analytic, meromorphic functions, Hadamard product, convolution.

Author(s): F. Müge Sakar and H. Ozlem Güney

August 2013

In vitro study of fungicides and biocontrol agents against Fusarium oxysporum f.sp. pini causing root rot of Western Himalayan fir (Abies pindrow)

Nine fungicides namely: carbendazim, hexaconazole, thiophonate methyl, triadimefan, metalaxyl, mancozeb, captan, copper oxychloride and chlorothalonil and seven bioagents namely: Trichoderma harzianum, Trichoderma viride,Gliocladium virens, Lacaria laccata, Boletus edulis, Suillus placids and Russula lutea were evaluated in vitro by using dual culture and cultural filtrate...

Author(s): W. A. Dar, M. A. Beig, S. A. Ganie, J. A. Bhat, Shabir-u-Rehman and S. M. Razvi

August 2013

Influence of seed polymorphism on physical, physiological and biochemical seed quality characters of endangered medicinal tree Bael (Aegle marmelos (l.) corr.)

Bael is a medicinal tree with multipurpose utility propagated through seeds. Bulk seeds of Bael exhibit polymorphism in seed characteristics. Hence, a study was undertaken to evaluate the influence of seed polymorphism on physical, physiological and biochemical seed quality characters. Polymorphic seeds based on size were separated by size grading the seeds using round perforated metal sieves of sizes 6.4, 6.0 and 5.5...

Author(s): B. Venudevan and P. Srimathi

August 2013

Saline stress on seed germination

Salinity is one of the major abiotic stresses in arid and semi-arid regions and it affects 7% of the world’s land area of about 930 million ha (Munns et al., 2006). Salinity reduces the ability of plants to take up water, leading to metabolic effect that reduces plant growth. It may reduce crop yield by upsetting water and nutritional balance of plant. The deleterious consequences of high salt concentrations in...

Author(s): M. Ameer Junaithal Begum, P. Selvaraju and B. Venudevan

August 2013

Numerical evaluation of a landmine detection system based on the neutron back scattering technique

This paper describes an anti-personnel landmine detection system, which is based on the neutron back-scattering technique. It consists of a point-like isotopic neutron source (252Cf, 2,31 × 107 n/s), eight BF3 detectors and a neutron moderating and shielding block made from borated paraffin (3 wt%). It was modeled and tested by carrying out Monte Carlo calculations (MCNP-4C2 Code). The tests were performed in some...

Author(s): Derya Yılmaz Baysoy and Metin Subaşı

August 2013

Development of mini-infiltrometer for soil sorptivity test in the humid tropical climate of Nigeria

Mini-infiltrometer for determining soil sorptivity, hydro-repellency and other hydraulic properties of soil using water and other forms of fluid was designed and developed. It was made of quality pyrex glass tubes and calibrated to metric standard after manufacture. The component of the mini-infiltrometer include: the infiltrometer tube, which bears a porous sponge at the tip for moisture metering into soil samples,...

Author(s): Fasinmirin J. T., Reichert J. M. and Ajayi, A. E.

August 2013

Development and evaluation of gas sucking machine for tubewell pit

The use of tubewell irrigation has made it possible to increase crop productivity. While installing and using of tubewells cause many accidents to occur every year. Such accidents are reported by media in the rainy season. The purpose of this study was to develop a gas sucking machine for minimizing such fatalities. 30 tubewell pits were selected for the study, where such accidents happened. It was found that the depth...

Author(s): C. J. S. Pannu, Brajesh Nare, N. K. Chhuneja and P. K. Guru

August 2013

Some insights into the reproductive performance, selection criteria, production and market constraints in communal goat production systems of South Africa

A farmer participatory survey was conducted in four communities, Mount Frere, Mount Ayliff, Maluti A and Maluti B, to establish reproductive performance, goat production and marketing constraints, and to examine the selection criteria for replacement goat does and bucks. Goat flock sizes ranged from 5 to 200 goats per household across the communities. Kidding rate varied with the community and also with the feed...

Author(s): Marume U., Chimonyo M. and Dzama K.

August 2013

Alleviation of depression in teenagers using light-sound technology

Teenage years are a time of rapid psychological transition from child to adult. The myth of universal teenage turmoil must not cloud professional judgment to the point that teenagers are not treated seriously. Today Light and Sound Stimulation are very much effective for the teenage to stimulate the connative aspect and decrease depression of an individual. The study highlights research about the effect of light and...

Author(s): Poonam Dhaka, V. L. Chouhan, and Dharm Singh

August 2013

Apo lipoprotein E4 gene APOE4: An early predictor of Dementia / Alzheimer’s disease

The present study aimed to determine the relationship of APOE4 with socio demographic variables as well as with co-morbidities including hypertension and diabetes mellitus. In this study, 200 subjects with dementia were recruited, out of these 200 patients APOE4 was present in 130 cases, 85 (65.4%) were male and 45 (34.6%) females. However, in 70 cases APOE4 was missing, 41 (58.6%) males...

Author(s): Nelofar Sultana, Masood .A. Qureshi, Rukhshan Khurshid and Fatima Shad .K.

August 2013

Volume based expression of soil variables: Good descriptor of soil-plant interrelationships

This research compared the gravimetric method of expression of soil nutrient concentration with actual soil volume based expression in terms of yield response using rubber as a test crop. A rubber plantation (planted in year 1989 under a NPK fertilizer trial) was investigated. The experiment was laid out with thirteen treatments in three replications in a randomized block design planted with rubber (Clone RRII 105) at a...

Author(s): D.V.K. Nageswara Rao

August 2013

Pneumococcal meningitis induced neuronal injury in motor cortex and cerebellum in Wistar rats

Bacterial meningitis is known to cause neurodegenerations in the hippocampus, a region of the brain concerned with learning and memory. Aim of the present study was to investigate the effect of pneumococcal meningitis on motor cortex and cerebellum in rats. 30 days old rats were divided into normal control (NC) and meningitis (M) groups. Rats in the meningitis group were infected with Streptococcus pneumonia...

Author(s): Daphne Santhosh and Indira Bairy

August 2013

A computational approach to analyze unbalancing in rotational systems

Rotational systems are widely used in industrial application and its monitoring can improve production and decrease stop times of machines, for example. In industry these kind of problem is, in general, solved using a vibration meter and a phase meter in order to obtain the necessary data to correct the rotor unbalancing. This work presents the development of a computational application, using LabVIEW, for improving the...

Author(s): Bruna T. V. Silva, Álvaro M. S. Soares, Mauro H. Mathias, Pedro P. L. Prado, João B. Gonçalves

July 2013

(G´/G, 1/G)-expansion method for traveling wave solutions of (2+1) dimensional generalized KdV, Sin Gordon and Landau-Ginzburg-Higgs Equations

The-expansion method is one of the most direct and effective method for obtaining exact solutions of nonlinear partial differential equations (PDEs). In the present article, we construct the exact travelling wave solutions of nonlinear evolution equations in mathematical physics via (2+1) dimensional generalized KdV, Sin Gordon Equation and Landau-Ginzburg-Higgs Equation by -expansion method,...

Author(s): Amna Iftikhar, Aysha Ghafoor, Tamour Zubair, Sahar Firdous and Syed Tauseef Mohyud-Din

July 2013

Positioning fruit trees into climate change/variability scenarios: Opportunities and constraints in the placement of fruit tree species in payment for environmental services

Extreme environmental conditions due to climate change or variability are a threat to crop production, productivity and livelihoods. Thus, providing alternative livelihoods to communities, especially the rural masses remain an important catalyst in reducing poverty, food insecurity and deforestation in the development of climate change/variability scenarios. This is critical in southern Africa where poverty,...

Author(s): Simon A. Mng’omba and Tracy Beedy

July 2013

Interaction of the extracts of three medicinal plants with antibiotics against some antibiotic resistant bacteria

The outcome of in vitro interaction of standard antibiotics with ethanolic leaf extracts of three medicinal plants (Picralima nitida, Chromolaena odorata andAspilia africana) against antibiotic resistant bacteria was investigated by agar disc diffusion methods and macrobroth dilution techniques. At least three isolates each of Escherichia coli, Staphylococcus aureus and Pseudomonas...

Author(s): Eze, E. A., Oruche, N. E. and Eze, C. N.

July 2013

Technological quality attributes of pork from a small-holder abattoir as affected by breed, age and season of slaughter

The objective of the current study was to determine the effect of breed, age group and season of slaughter on technological quality attributes of pork from a smallholder abattoir. Meat from the Large White pig meat had higher (P < 0.05) pHuand lower a* than values of meat from the Landrace. No breed differences were observed in lightness (L*), yellowness (b*), shear force values, thawing loss, cooking loss and...

Author(s): C. S. Gajana, T. T. Nkukwana, U. Marume and V. Muchenje

July 2013

Breeding dynamics of rice (Oryza sativa) for enhanced adaptation and grain quality

Rice is a very important crop feeding half of the world population. Its importance is becoming increasingly high due to high nutritive value and high returns per given land area than any other cereal crop. However, its production is facing major challenges such as degraded soil, need for high grain quality, population growth, high input costs, climate change and variability threats and plateauing yields. There is now...

Author(s): Kimani JM, Tongoona P. and Derera J.

July 2013

A demonstration of correlation graphs to human body dimensions

A large number of variables and multivariate analyses are required to study complexity. Network analysis is also a valuable complex systems analysis tool. Recently techniques were developed where correlation matrixes are presented as networks, known as correlation graphs. These have been used mainly to study structures in time series data, often in the financial stock markets, and correlation graphs have not been widely...

Author(s): Carel Nicolaas Bezuidenhout and Ryan Rhett Domleo

July 2013

Allocation of capacitor banks in distribution systems using multi-objective function

This paper develops an optimal placement method in order to size and site capacitor banks in IEEE 33 bus test system. The proposed method in order of optimization in this article is Evolutionary programming and the objective function is composed of two parts. Most part of proposed objective function considers improvement of voltage profile and other part is active power losses of the system in nominal load of mention...

Author(s): Noradin Ghadimi

July 2013

Customer churn prediction using a hybrid genetic programming approach

A churn consumer can be defined as a customer who transfers from one service provider to another service provider. Recently, business operators have investigated many techniques that identify the customer churn since churn rates leads to serious business loss. In this paper, a hybrid technique has been used which combines K-means clustering with Genetic Programming to predict churners in telecommunication companies....

Author(s): Ruba Obiedat, Mouhammd Alkasassbeh, Hossam Faris and Osama Harfoushi

July 2013

Heavy metals concentrations in selected areas used for urban agriculture in Dar es Salaam, Tanzania

This study was carried out to assess the concentration of heavy metals in selected areas used for urban agriculture in Dar es Salaam and compare them with permissible limit from the Tanzania Bureau of Standards (TBS) in order to establish risk levels. Samples were collected from six sites of Tazara mchichani, Ubungo darajani, Kigogo darajani, Temeke wailers, Tegeta and Bunju, which reflect frequently flooded and...

Author(s): Kibassa, D., Kimaro, A. A. and Shemdoe, R. S.

July 2013

Study of the mechanism that increases the hardness of groundwater: A case study from Beijing urban area

The rapid development of construction and the increase of population water demand were increased rapidly in Beijing, China’s capital city, yet one of its fastest-growing municipalities is running out of water. Today, more than 70% of the municipality’s total water supply comes from groundwater. Therefore groundwater has been over-exploited a long time which led to regional water level down and more and more...

Author(s): Mingzhu Liu, Seyf-Laye Alfa-Sika Mande,, Ibrahim Tchakala, Gbandi Djaneye-Boundjou, Moctar Limam Bawa and Honghan Chen

July 2013

An optimization study on the delivery distance of colloidal silica

The low initial viscosity of colloidal silica enables the use of low injection rates during soil treatment against liquefaction. Several large scale 3-D laboratory experiments show that colloidal silica treatment provides successful treatment coverage when the distance between injection and extraction wells is about 2.5 m. However the repeatability of such large scale experiments to optimize the injection procedure is...

Author(s): Murat Hamderi and Patricia M. Gallagher

July 2013

Acute effects of Zn(NO3)2 on gill and liver tissues of Silver Carp (Hypophthalmichthys molitrix)

Zinc is one of an environmental water pollutant, added to diet and water as a micronutrient for increase of plankton production and fish growth. Therefore, this research was carried out with the aims of studying on histopathology of Zn(NO3)2toxicity on gill and liver tissues of silver carp (Hypophthalmichthys molitrix) within the period of 96 h. Totally, 135 fishes with mean weight 50 ± 10 g were stocked in 12...

Author(s): Ali Hallajian, Ayoub Yousefi Jourdehi, Rezvanollah Kazemi and Mahzad Shakuri

July 2013

Reduction of corrosion in various concentrations of hydrochloric acid by compositional design

Experimental analysis has been advanced in the reduction of corrosion in various concentrations of hydrochloric acid (HCl) by compositional design. The analysis which involved metal matrix composite design and corrosion pattern determination by weight loss method and least square model showed that percentage weight loss, corrosion rates and reactivity decreased as Aluminum addition in the Al/Fe composite...

Author(s): Anyalebechi O., Owate I. O. and Avwiri G.

July 2013

Farmers’ perception on ante-mortem welfare of sheep and slaughter indicators in Eastern Cape Province, South Africa

A survey was conducted among 203 sheep farmers to investigate their perceptions on the significance of ante-mortem welfare and slaughter indicators for sheep. Descriptive statistics were computed for seasonal indicators, farmers’ age groups, gender and their distribution within the Eastern Cape Province (ECP). The X2-tests were also computed to determine the associations between the farmers’...

Author(s): Peter Olutope Fayemi and Voster Muchenje

July 2013

Molecular diagnosis of avian respiratory diseases in commercial broiler chicken flocks in province of Najaf, Iraq

Avian influenza virus subtype 9 and Newcastle virus have been recognized as the most important pathogens in poultry. In Najaf governorate, Iraq, many chickens’ flocks suffered from high mortality (about 30 to 70%) and respiratory signs. In this study, trachea swabs and tissue specimens from 53 commercial broiler chicken flocks suffering from respiratory diseases were tested initially by rapid test for antigen...

Author(s): Ali M. Al-Mohana, Haider M. Kadhimv, Alaa H. Al-Charrakh, Zainab Al- Habubi, Fadhil H. Nasir, Samer A. Al-Hilali and Zainab J. Hadi

Page 9 of 55, showing 50 records out of 2733 total, starting on record 401, ending on 450