Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2731

SRE Articles

May 2014

The reliability test assessment of three-parameter Weibull distribution of material life by Bayesian method

This paper is mainly according to Bayesian formula and using Bayesian method to estimate parameter truth-values of three-parameter Weibull distribution to achieve material reliability evaluation. The parameter values estimated by maximum likelihood method as the prior information of Bayesian estimation, assume that the parameter obeys a certain distribution and let the certain distribution as the prior distribution of...

Author(s): Xintao Xia, Yuanyuan Qin, Yinping Jin and Ming Qiu

May 2014

Assessment for the quality of rolling bearing parts based on fuzzy theory

There are many factors leading to rolling bearing failure, and the issue of parts quality like roller error and inner ring error is one of the main influence factors causing premature failure of the bearing. Assessment for bearing parts quality can obviously eliminate or minimize the chance of potential failure, and can improve the service life of bearing, wear-resisting property and reliability. For the sake of the...

Author(s): Xintao Xia, Yanyan Meng, Yantao Shang and Ming Qiu

May 2014

Safe and efficient mining technology for full-mechanized caving face of deep mine with capacity of ten million tons

Based on a highly intensive mining mode of “one mine, one coalface, ten million tons”, safe and efficient mining technology for full-mechanized caving face of deep mine with capacity of ten million tons is proposed to deal with technical problems such as high ground pressure, high ground temperature, high water pressure and easy spontaneous combustion of coal seam in Longgu coal mine. The surrounding rock...

Author(s): Ma Liqiang,, Sun Hai,, Jin Zhiyuan,, Wang Fei, and Li Pan,

May 2014

Microarrays revealed general-key genes responsive to implantation of low-energy N+ ion beam in rice

Implantation with low-energy ion beam can induce various plant biological effects including stimulation, damage and mutation. But the adaptive mechanism altering gene expression in response to this stressor in plant is not fully understood. A highly thorough and comprehensive analysis to investigate the general-key genes responsive to implantation with low-energy ion beam in plant is important to understand the diverse...

Author(s): Ya Huiyuan, Chen Qiufang, Wang Weidong and Jiao Zhen

May 2014

Study on the warp and weft direction conductivity of anti-radiation knitted fabric

Measured by electrical experiments involving knitted warp and weft direction conductivity, we concrete analysis on the factors that affect electromagnetic shielding effectiveness of the knitted fabric. The influence factors of preventing electromagnetic radiation fabric shielding performance is associated with the organization structure and related parameters of knitted fabric. These include: organization type, the...

Author(s): Zhu Xiao Yu

April 2014

A review on nanotechnology as a tool of change in Nigeria

Nanotechnology has generated diverse awareness and attentions nowadays and stand as one of the foremost alternative modern clean technologies of the 21st century.  In spite of the essential benefits of nanoscience and technology, Nigeria is yet to key into nanotechnology initiative and strategy towards improving her socio-economic development as well as transformation of important sectors. The benefits and...

Author(s): M. T. Bankole, Jimoh O. Tijani, I. A. Mohammed, and A. S. Abdulkareem,

April 2014

Effect of routine pathological procedure on morphometric parameters of the heart in rat models

In this study, the aim was to investigate effects of routine protocols commonly used in pathology (formalin fixation, paraffin embedding, slicing and staining) on morphometrical parameters of hearts in rats. Six males and 6 females rats were used. All of the subjects were euthanized and then hearts were fixed in formalin solution. Hearts were cut at the level of musculus papillaris and cut surfaces area were...

Author(s): Ozgur Ozdemir, Orhan Yavuz and Fatih Hatipoglu

April 2014

The driving forces of fertilizer use intensity by crops in China: A complete decomposition model

Fertilizer plays an important role in raising agricultural production in China. However, the negative environmental consequences resulting from high fertilizer use intensity have posed serious challenges to agriculture sustainability in China. The goal of this study is to identify the underlying driving forces of fertilizer use intensity by crops that help to identify challenges and opportunities and provide advices for...

Author(s): Dan Pan

April 2014

The improved generalized Riccati equation mapping method and its application for solving a nonlinear partial differential equation (PDE) describing the dynamics of ionic currents along microtubules

In this paper we apply the improved Riccati equation mapping method to construct many families of exact solutions of a nonlinear partial differential equation involving parameters of a special interest in nanobiosciences and biophysics which describe a model of microtubules as nonlinear RLC transmission lines. As results, we can successfully recover the previously known results that have been found using other methods....

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

April 2014

Genetic diversity of Quercus liaotungensis Koidz populations at different altitudes

To estimate genetic diversity and genetic structures of Q. liaotungensis at different altitudes in Xingtangsi, eight natural populations were surveyed by sequence-related amplified polymorphism (SRAP) markers. A total of 179 bands were amplified by 12 pairs of SRAP primer combinations. The average number of amplification band for each pair primers was 14.9. The percentage polymorphic band (PPB) of Q. liaotungensis was...

Author(s): J. Wang, Q. Y. Wei, S. J. Lu, Y. F. Chen and Y. L. Wang

April 2014

Synthesis of Chebyshev-I filter using folding and retiming

In synthesizing Digital signal processing (DSP) architecture, maintaining low silicon area and high performance becomes an important factor which can be achieved by various optimization techniques. To achieve this, we employ two design optimization techniques: folding and retiming, which are applied to 3rd order Chebyshev I high pass digital filter to minimize the functional units (adders, multipliers) and to reduce the...

Author(s): Nongmaithem Lalleima Chanu and Vimal Kant Pandey

April 2014

Geometry optimization for heat sinks using thermography and finite element

Cooling systems based on Peltier cells have great advantages to be energized by renewable energy sources. This paper describes the optimization of operation of a heat exchanger which was located in the side cool on Peltier Cell. For this work, we performed infrared shots of the experiment in order to establish and analyze the pattern of heat distribution. Infrared results as well as boundary conditions fueled our...

Author(s): I. J. Valencia Gómez, F. Hernández Hernández , J. A. Duarte-Moller, O. Jiménez Sandoval, A. Marroquín de Jesús and J. M. Olivares Ramírez

April 2014

4F_C: A conceptual framework for understanding architectural works

This paper presents a conceptual framework for understanding an architectural building by qualitatively discerning the complex issues involved in building design and systematically integrating them into a theoretical construct. The premise behind this framework is that, in design, a better understanding of what to design leads to a more informed understanding of how to design, resulting in a more structured and...

Author(s): Saleem M. Dahabreh

April 2014

Comparative study of protective effect of separate administration of vitamin C and folic acid in act therapy induced hepatic injury

Artemisinin and its derivatives are among the most effective antimalarial drugs used today. This study compared the effects of pre-treatment with vitamin C and folic acid on the hepatotoxic effect of artemisinin combination. Thirty male wistar rats randomly assigned to six groups of five rats each were used in the study. Group A was the normal control; groups B, C, D, E and F were placed on therapeutic doses of leonart,...

Author(s): Adegbesan, Bukunola O., Ogunlabi, Olugbenga O., Aroyewun,  Aramide, O. and Ajani, Emmanuel O.,

April 2014

Estimation of number of generations of Spodoptera litura Fab. on peanut in India during near and distant future climate change scenarios

Studies were conducted to estimate the impact of increase in temperature on number of generations of tobacco caterpillar, Spodoptera litura on peanut for seven different locations of various agro ecological zones of the country for baseline (1961 to 1990), present (1991 to 2005), near future (2021 to 2050) and distant future (2071 to 2098) climate change (A1B) scenarios. The daily minimum and maximum temperature (MinT...

Author(s): Rao, M. Srinivasa, Rama Rao, C. A., Vennila, S., Manimanjari, D., Maheswari, M. and  Venkateswarlu, B.

April 2014

Antidiabetic activity and phytochemical screening of Acalypha wilkesiana (Euphorbiaceae) Mull Arg. roots in alloxan-induced diabetic rats

The aim of this study was to investigate the anti-diabetic effects and biochemical parameters of methanol root extract of Acalypha wilkesiana Mull Arg. (MEAW) in alloxan-induced diabetic rats. The effect of the extract (200 and 400 mg/kg, p.o.) on fasting blood glucose (FBG), total cholesterol (TC), triglycerides (TG), serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT) level...

Author(s): Odoh, U.  E., Ndubuokwu, R. I., Inya- Agha, S. I., Osadebe, P. O., Uzor, P. F. and Ezejiofor, M.

April 2014

Computational Fluid Dynamics (CFD) simulation to analyze the performance of tube-in-tube helically coiled of a heat exchanger

This work deals with a comparative performance study of two different helically coiled heat exchangers with two and three helical coils through a Computational Fluid Dynamics (CFD) simulation for heat transfer characteristics. The helically coiled heat exchangers are typical industrial equipments found in process applications, such as: chemical, food, energy, electronics, environmental, spatial, and cryogenic. Numerical...

Author(s): Chaves, C. A,  de Castro, D. R. F. ,  Lamas, W. Q., , Camargo, J. R., and Grandinetti, F. J.

April 2014

Failure model and detecting method for MOSFET degradation in DC-DC power converters

MOSFET is the most commonly used devices in DC-DC power converters, and its performance is important to the prognosis and health management of power. The paper proposes a degradation analysis model for MOSFET in DC-DC power converters. A method for detecting the degradation of MOSFET is also introduced. Simulations have shown that the method can predict deterioration in the performance of MOSFET. The simulation results...

Author(s): Wu, Li-Feng,, Dong, Peng-Fei,, Guan, Yong,, Wang, Guo-Hui,, and Li, Xiao-Juan,    

April 2014

Performance assessment of transferred irrigation management: Case study of Düzce Irrigation District in Turkey

In this study, physical and financial performance criteria of transferred irrigation management of Düzce Irrigation District were evaluated between 2006 and 2012. Physical and financial performances are irrigation ratio and sustainability of irrigated land, and cost recovery ratio, maintenance expenditure to revenue ratio, operational cost per unit area, total cost per personnel employed on water delivery, revenue...

Author(s): ÖZMEN, Selçuk

March 2014

Application of statistical techniques to evaluate the reliability of ultrasonic and rebound hammer measurements of compressive strength in the concrete of bridges

In order to assess the uncertainties in the experimental measurements, the use of statistical error analysis is essential for a reliable technical diagnosis on structural safety in reinforced concrete of bridges. Two non-destructive techniques (ultrasound and rebound hammer) were performed, resulting in conflicting technical diagnostics when analyzed without the study of the variability of experimental errors. It was...

Author(s): Carvalho, C. H., Severo Junior, J. B., Macedo, M. C. S. S., Griza, S., de Andrade, C. E. C., dos Santos, A. A. , and Barreto, L. S.

March 2014

Capacity enhancement of multicarrier code division multiple access (MCCDMA) using orthogonal complete complementary codes and adaptive constellations

The multicarrier code division multiple access (MCCDMA) is a strong candidate for the future wireless mobile communication systems put forth by service quality and system capacity. In order to exploit the maximum possible channel diversity and desirable correlation properties, the modification of MCCDMA system is addressed here to pave the way to remove the multiple access interference (MAI) effect and to increase the...

Author(s): Senthilkumar, G. and Amutha, R. 

March 2014

Variational cartographic projections for the Slovak Republic territory

Disadvantages of currently used Křovák`s projection in Slovak Republic such as large scale distortion became evident after dividing of Czechoslovakia. The new proposal of the cartographic projection for the Slovak Republic (Lambert`s conformal conic projection in normal position) was created in 2010. The aim of this paper is to define an optimal oblique position of map projections for the Slovak Republic...

Author(s): Vajsáblová, Margita  and Szatmári, Daniel 

March 2014

Experimental study of anaerobic digestion of dog waste

Bioconversion of dog waste (dung) to energy as one of the ways for proper disposal of the waste was carried out through anaerobic digestion for biogas production. The 59-day experiment was performed within the slurry temperature range of 28 and 44°C using a 50 L metallic biodigester. Prior to charging the digesters, physico-chemical properties and microbial content of the waste were determined using standard...

Author(s): Okoroigwe, E. C., Ibeto, C. N. and Ezema, C. G.

March 2014

A Novel SPICE compatible behavioral model for molecular electronics having hysteresis effects

Although molecular electronics is in its infancy, there are many significant advances in understanding and implementing computational functions based on molecular electronic devices. In order to evaluate a molecular electronic circuit, a model is needed. In existing literature, only a few models have been introduced for molecular electronics, all of which do not support the hysteresis phenomenon. To the best of the...

Author(s): Bahrepour, Davoud  and Sharifi, Mohammad Javad

March 2014

Comparative osteometric differences in humerus of bari Goat and Dumbi Sheep

Morphological studies were conducted on the Humerus of 60 clinically healthy animals (30 Bari goat and 30 Dumbi sheep) of both sexes, slaughtered at Tandojam and Tando Allahyar abattoirs. For comparative study, animals were divided in three age groups viz., lambs/kids (6-9 months), yearlings (13-21 months) and adult (21-24 months). The estimated age was determined through dental formula, whereas, the body weight was...

Author(s): Lochi, Ghulam Murtaza, Shah, Muhammad Ghiasuddin, Kalhoro, Illahi Bux, Gandahi, Jameel Ahmed, Khan, Muhammad Shoaib, Haseeb, Abdul, Khushk, Sheeraz Mustafa, Oad, Ameet and  Ansari, Mansoor Ibrahim

March 2014

Sorption mechanism of some heavy metal ions from aqueous waste solution by polyacrylamide ferric antimonate

Incorporation of a polymer material into an inorganic ion exchanger provides a class of hybrid ion exchangers with a good ion exchange capacity, high stability and high selectivity for heavy metals. We can see these properties in the present study. The kinetic of Fe (III), Pb (II), Cd (II), Cu (II), and Zn (II) ions on polyacrylamide ferric antimonate has been studied. The thermodynamic parameters such as activation...

Author(s): El-Naggar, I. M., Mowafy, E. A., El-Aryan, Y. F. and Abd El-Wahed, M. G.,

March 2014

Regional sustainability assessment and its sensitivity analysis based on ecological footprint model: A case study of Xingguo County in China

Based on the Ecological Footprint Model, a Sustainability Index is put forward to measure the degree of regional sustainable development. Using correlation and sensitivity analysis, this study explored the level of sustainable development in the Xingguo County of China from 1996 to 2005, and revealed the driving factors of human activities on sustainable development. The results indicate that the...

Author(s): Xie, Hualin, Liu, Qu , Wang, Peng and Liu, Zhifei,

March 2014

Development of a device adapted to perform the torch gas tungsten arc welding (GTAW) hardfacing using alloys in powder form

This work was aimed at developing a device adapted to any gas tungsten arc welding (GTAW) torch, allows obtaining hard coatings by depositing alloys in powder form. For the purpose of verifying the feasibility of implementing this process, the results and parameters were compared with the plasma transferred arc (PTA) process. Due to good wear resistance was used as the substrate alloy SAE 1020 and alloy STELLITE 6...

Author(s): Moselli, Paulo Cezar,  de Oliveira, Marcelo Falcão and Moreno, João Roberto Sartori 

March 2014

Toxicity and repellent effects of some botanical insecticides on the egg-larval parasitoid Chelonus oculator Panzer (Hymenoptera: Braconidae)

Chelonus oculator Panzer is an egg-larval parasitoid of the cotton leaf worm, Spodoptera littoralis (Boisd.) with a broad geographical area. Four botanical insecticides - azadirachtin (Neem Azal), pyrethrum (Spruzit Neu), capsaicin (Hotpepper wax) and d-Limonene (Orange guard) - were investigated regarding their side effects on C. oculator. Sub-lethal concentrations (LC25 and LC50) were determined for azadirachtin and...

Author(s): TUNCA, Hilal, KILINÇER, Neşet and ÖZKAN, Cem

February 2014

A review on Oat (Avena sativa L.) as a dual-purpose crop

The multifunctional uses of oats include forage, fodder, straw for bedding, hay, haylage, silage chaff, human food; most commonly, they are rolled or crushed into oatmeal, or ground into fine oat flour. Oatmeal is chiefly eaten as porridge, but may also be used in a variety of baked goods, such as oatcakes, oatmeal cookies, oat bread and raw material for food, health care and cosmetic products. The major components of...

Author(s): Ahmad, Mushtaq, Zaffar, Gul, Dar,  Z. A.  and Habib, Mehfuza 

February 2014

Comparative performance analysis of irrigation schemes in Kastamonu area located in northern Turkey

Performance analysis of six irrigation schemes in Kastamonu area located in northern Turkey were assessed using comparative performance indicators between the years 2008 and 2012. Performance indicators used for the analysis included relative water supply, financial performance as cost recovery ratio, maintenance expenditure to revenue ratio, operational cost per unit area, total cost per personnel employed on water...

Author(s): ÖZMEN, Selçuk 

February 2014

Effects of physiological status and seasonal variation on plasma mineral profile of sheep in Kashmir valley

Evaluating mineral profile of sheep, belonging to different physiological states and in different seasons, is an important indicator of their nutritional and health status. This is important to prevent health disorders which lead to production and reproductive disturbances. A total of 167 blood samples were collected in four different seasons of the year from sheep having varied physiological demands in Shuhama Alusteng...

Author(s): Dar, A. A., Jadhav, R. K., Dimri, U., Khan, A. A., Khan, H. M. and Sharma, M. C.

February 2014

Evaluation of management transfer of irrigation scheme in Düzce valley located in Western Black Sea Region of Turkey

Management transfer of Düzce irrigation scheme was evaluated using appropriate performance indicators and the effects of farmers' opinions on water using and agricultural effectiveness. The results of the analysis indicated that the transfer process was not useful for farmers generally. Transfer management had no effect on sufficiency, equality, and irrigation time. However, maintenance of irrigation channels...

Author(s): ÖZMEN, Selçuk 

February 2014

Metamaterials for performance enhancement of patch antennas: A review

This review paper focused on the use of metamaterials for the performance enhancement of microstrip patch antennas. In this work, the definition of metamaterials used in literature is first reviewed and then we consider various challenging issues for the microstrip patch antennas. The paper hence concludes some thoughts on the future scope of research in the field of metamaterials, discussing the advantages that...

Author(s): Singh, Ranjeeta, Kumar, Nitin and Gupta, S. C.

February 2014

Blood glucose level of plasma samples prepared from sodium fluoride and lithium heparin anticoagulants for diabetes mellitus diagnosis

The aim of this study was to compare blood glucose levels, which were prepared from NaF and lithium heparin anticoagulants for diabetes mellitus (DM) screening test. DM-check up Clinic at Kutchap Hospital, Udonthani province collected the blood samples and filled sodium fluoride (NaF) and lithium heparin tubes (Greiner Bio-One, Austria) from 300 customers. Then, plasma was separated immediately from each blood sample...

Author(s): Sudjaroen, Yuttana

January 2014

Saffron (Crocus sativus L.) in the light of biotechnological approaches: A review

Saffron (Crocus sativus L.) is a sterile triploid plant belonging to the Iridaceae (Liliales, Monocots). Saffron is a spice derived from the flower and has for decades been the world's most expensive spice. Saffron is propagated by corms as the flowers are sterile and fail to produce viable seeds. A corm survives for only one season, producing up to ten "cormlets" that eventually give rise to new plants....

Author(s): Ahmad, Mushtaq, Zaffar, Gul, Habib, Mehfuza,  Arshid, Ameeque, Dar,  N. A. and Dar, Z. A. 

January 2014

Analysing social attributes of loan default among small Indian dairy farms: A discriminant approach

The study examines the socio-economic factors discriminating defaulters and non-defaulters of credit repayment. Multi-stage sampling design was adopted for selection of farm respondents. The data were collected through structured questionnaire by personal interview method. A linear discriminant function considered to examine the relative importance of different factors in discriminating between non-defaulters and...

Author(s): Sinha, Mukesh Kumar, Dhaka, J. P. and Mondal, Biswajit

January 2014

Evolution characteristics and driving forces of wetland changes in the Poyang Lake eco-economic zone of China

Wetland ecosystem is known as the “kidney” of earth and the “gene pool” of species. It has the functions of regulating climate, flood storage and degradation of pollution. In this paper, based on GIS technology and landscape ecology, wetland changes and its driving forces in the Poyang Lake Eco-economic Zone of China are analyzed. The analysis of landscape pattern demonstrates that there is an...

Author(s): Xie, Hualin, Liu, Qu and Liu, Guiying

January 2014

Development of UV digestion unit for natural rubber latex preparation before the determination of phosphorus residue with artificial neural network-digital image-based colorimetry

Digital image–based colorimetry (DIC) coupled with artificial neural network (ANN) was studied for the determination of phosphorus in natural rubber (NR) latex. The method is based on the RGB (Red, Green, and Blue) value of an image of phosphorus standard solution reacted with molybdenum blue solution. The picture of the complex solution was captured by using a complementary metal oxide semiconductor (CMOS)...

Author(s): Masawat, Prinya, Panwong, Benyanan and Udnan, Yuthapong

January 2014

Influence of season affecting flowering and physiological parameters in mango

A field experiment was conducted at State Horticultural Farm, Kanyakumari District undertaken by the Horticultural College and Research Institute, Tamil Nadu Agricultural University, Periyakulam during the year 2010 to 2012. In general, mango flowering is considered as a complex phenomenon. Besides, favorable climate conditions that favours off-season flowering, genetic potential of the varieties, physiological and...

Author(s): Kumar, M., Ponnuswami, V., Kumar, P. Jeya and Saraswathy, S.

January 2014

Effect of Phyllanthus amarus leaf extract on alterations of haematological parameters in Salmonellae typhi infested wistar albino rats

Haematological indices provide crucial information to assessing the well-being of an organism. In this present study, the antihaematotoxic effect of Phyllanthus amarus leaf extract on Salmonellae typhi–induced haematotoxicity in rats were investigated. The experimental animals were randomly divided into three study groups. Group 1 received feed and water and was not induced with typhoid (negative control). Groups...

Author(s): Nwankpa, P, Agomuo, E. N., Uloneme, G. C., Egwurugwu, J. N., Omeh, Y. N. and nwakwuo, G. C.

December 2013

Gene action and combining ability for fodder yield and its attributing traits in oats (Avena sativa L.)

Studies in forage oats (Avena sativa L.) were carried out to generate information on combining ability (general and specific), nature and magnitude of gene effects for forage yield and their attributing traits. The experimental materials comprised of ten diverse parents and 45 F1 crosses (excluding reciprocals) generated through 10 x 10 diallel mating design. The experimental material was evaluated in a randomized...

Author(s): Mushtaq Ahmad, Gul Zaffar, S. M. Razvi, S. D. Mir, M. A. Rather and Z. A. Dar

December 2013

Decomposition of productivity growth in watersheds: A study in Bundelkhand region of Madhya Pradesh, India

Total change in production and productivity are the two important dimensions of benefits of watershed development programmes along with the conservation of land and water resources. To segregate out the impact of various watershed-based interventions on crop productivity, a study was carried out in Bundelkhand region of Madhya Pradesh state of India. Data were collected from 240 farmers’ selected from eight...

Author(s): Biswajit Mondal, Alka Singh, S.D. Singh, Mukesh Kumar Sinha and D. Suresh Kumar

December 2013

Multiple attribute decision making for selection of mechanical cotton harvester

A numerical method called Multiple Attribute Decision Making (MADM) has been used for rational selection of a cotton harvester out of a finite number of cotton harvesters available the world over. In India, efforts are being made to design and develop a commercial cotton harvester to harvest selected cotton varieties sown by adopting common agronomic practices locally for cotton cultivation. The crop parameters for two...

Author(s): S. S. Kohli, Manjeet Singh, Karun Sharma and Gayatri Kansal

December 2013

Effective irrigation water management in Rabi Chilli for Bastar agro climatic zone

Chilli is one of the most promising vegetable crops for Bastar Agro Climatic Zone (ACZ) of Chhattisgarh State (India). Even though the region receives an average annual rainfall of 1200 to 1400 mm, it still lags double cropping system due to mismanagement of harvested and conserved rainfall. A field experiment was conducted on chilli crop (variety – NS 1701) to study the irrigation scheduling and effect of...

Author(s): D. Khalkho, R. K. Naik, A. K. Thakur, Y. Bisen and A. K. Chandraker

December 2013

An experimental setup to seek for maximum power point tracking of photovoltaic panels

Energy is a very important issue nowadays. In the last years a lot of researchers have dedicated their studies to looking for new energy sources. In Brazil, we have the privilege to have an amount of sunlight per year - very high all over the country. This fact motivated this research. In this work we present an experimental approach for achieving maximum power point tracking of photovoltaic panels. To do so, we...

Author(s): Henrique Silveira Meyer, Álvaro Manoel de Souza Soares, Otávio Simões de Araújo Neto, Pedro Paulo Leite do Prado and João Bosco Gonçalves

December 2013

Common fixed point theorems for some generalized non-expansive mappings and non-spreading mappings in CAT(0) spaces

We study the existence of a common fixed point for some generalized non-expansive mappings and non-spreading mappings in CAT(0) spaces. We also study an iterative method for approximating common fixed point of a pair of those mappings. Key words: CAT(0) Space, nonspreading mapping, common fixed  point.

Author(s): Tanaphong Prommai, Attapol Kaewkhao and Warunan Inthakon

December 2013

Measurement of trimethylamine contents and evaluation of pig meat natural quality by spectrophotometric method

Pig meat off-flavor was attributed to trimethylamine (TMA) contents, and to evaluate pig meat natural quality at different breeds, genders and days is reported. In this study, total 49 leg meat samples were used to assay TMA contents and 18 for measurement of TMA threshold to evaluate the natural quality. Xiang Mini pig contained the lowest TMA value (11.31±0.25 μg/g) in the four tested breeds, whose meat...

Author(s): Mohammod Abdul Hamid, Xi Wang, and Xingbo Zhao

December 2013

Heterobasidion root rot in forests on former agricultural lands in Poland: Scale of threat and prevention

This paper describes the specifics of forests on former farmlands in Poland and their protection as well as preventive measures taken. The review refers to polish literature on the threat by root rot caused by Heterobasidion annosum (Fr.) Bref. to pine and spruce plantations established on post-agricultural lands on an area of more than 1400 000 ha. In Europe, the latter presents an outstanding example of only one of...

Author(s): Zbigniew Sierota

December 2013

Chebyshev wavelets method for boundary value problems

Chebyshev wavelets method (CWM) is applied to find numerical solutions of fifth and sixth order boundary value problems. Computational work is fully supportive of compatibility of proposed algorithm and hence the same may be extended to other physical problems also.  A very high level of accuracy explicitly reflects the reliability of this scheme for such problems. Key words: Chebyshev wavelets method (CWM),...

Author(s): Ayyaz Ali, Muhammad Asad Iqbal and Syed Tauseef Mohyud-Din

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