Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2746

SRE Articles

Sharing healthcare information based on privacy preservation

March 2015

The evolution and development of information technology have facilitated greater sharing of data and knowledge management for the collection of electronic information by data owners such as governments, corporations, and individuals. Therefore, they have created huge opportunities for knowledge management and information retrieval. Recent develoments have helped improve decision making especially in the fields of...

Author(s): Asmaa Hatem Rashid and Norizan Binti Mohd Yasin

Antimicrobial activity and phytochemical screening of crude water extract of the stem bark of Ficus glumosa.

March 2015

Water and methanol extracts of the stem bark of Ficus glumosa were screened for their antimicrobial properties against Salmonella species. Preliminary results showed that the active compound was in the water extract. Therefore, the water extracts (hot and cold) were subjected to column chromatographic fractions and antibacterial screening. The most active fraction was subjected to phytochemical screening and finally Gas...

Author(s): H. A. Kwazo, U. Z. Faruq, S. M. Dangoggo, B. S. Malami and D. O. Moronkola

A study on current status of herbal utilization in Bulgaria: Part 1 - Application of herbal medicines

March 2015

Despite increasing interest in phytotherapy, little is known about patterns of herb utilization in modern society. Ethnobotanical studies are useful tool to evaluate the dynamics of traditional knowledge. To our knowledge, there is no study focused on collection of information about herbal utilization from a wide range of people in Bulgaria. 1) the attitudes toward benefits of medicinal plants; 2) the most popular...

Author(s): Asya Pencheva Dragoeva, Vanya Petrova Koleva, Zheni Dimitrova Nanova, Teodora Veselinova Koynova and Pavlina Kalcheva Jordanova

Front line demonstrations on need based plant protection in pulses for enhancing productivity and profitability under farmer’s condition

March 2015

Pulses have high nutritional value and worldwide commercial importance because these are rich source of protein and fibers. The productivity of pulses is lower in comparison to potential yield due to several biotic and abiotic stress. To show the productivity potential and profitability of need based plant protection in pulse crops (Black gram, Pigeonpea, Gram, pea and Lentil) total 74 front line demonstrations (FLDs)...

Author(s): A. K. Tripathi, K. S. Yadav & V. P. Srivastava

Investigation of resonance characteristics and effective parameters of a metamaterial structure with split rings

February 2015

This paper presents a new metamaterial, based on SRR structure and systematically investigate the various properties of the metamaterial structure. The resonant frequency of the proposed metamaterial structure is first estimated using its equivalent circuit model and the estimated value thus obtained is then compared with the values obtained by High Frequency Structure Simulator (HFSS) simulations. The negative...

Author(s): R. Singh, N. Kumar and S. C. Gupta

Tracheal relaxant effect of aqueous-methanol leaf extract of Rumex vesicarius L. in rabbits

February 2015

Rumex vesicarius L. has traditionally been used in folkloric medicine to manage respiratory disorders. The present study was designed to evaluate the effect of aqueous-methanol extract of R. vesicarius on isolated rabbit tracheal preparations, an attempt to validate its folkloric use in traditional medicine for respiratory ailment. The application of the extract to isolated rabbit tracheal preparations relaxed...

Author(s): Imran Ahmad Khan, Khalid Hussain Janbaz, Abdul Aziz, Muzammal Sattar, Shaukat Hussain Munawar, Zahid Manzoor, Muhammad Asif Raza, Ghayoor Fatima and Abdul Hannan

Proposition of a low cost field assay to determine antiproliferative properties of indigenous plants using Dugesia dorotocephala (brown planaria)

February 2015

Cancer is a major health problem, not only in developed countries, but also in developing countries where the number of cancer-related ailments is growing. Chemotherapy is the most commonly used treatment option but side effects associated with its use necessitates the search for alternatives. Over 80% of the population in developing countries relies on ethnomedicinal plants for primary healthcare including cancer....

Author(s): Florence Dushimemaria and Davis R. Mumbengegwi

Investigations on optimum possibility of replacing cement partially by redmud in concrete

February 2015

Red mud is an industrial waste material generated during production of alumina from bauxite by Bayer process. These industrial wastes hold some heavy metals which are hazardous in nature. The aim of the paper is to investigate the possibility of partially replacing Portland cement in concrete by red mud and evaluating its compressive and splitting tensile strength. This study examines the effect of red mud on the...

Author(s): D. Linora Metilda, C. Selvamony, R. Anandakumar and A. Seeni

Production of laccase from a white rot fungi isolated from the Amazon forest for oxidation of Remazol Brilliant Blue-R

February 2015

The purpose of this study was to investigate the production of laccase from a white rot fungi isolated from the Amazon forest for oxidation of Remazol Brilliant Blue-R (RBB-R). Initially, a small screening was carried out aiming to find laccase producers. The next step was to investigate, using factorial design and Response Surface Methodology (RSM), the influence of the content of glucose, peptone and CuSO4 in the...

Author(s): Yago Vinícius Serra dos Santos, Davi Almeida Freire, Silviane Bezerra Pinheiro, Luciane Fontão de Lima, Joao Vicente Braga de Souza and José Renato Pereira Cavallazzi

High sensitive C-reactive protein (hs-CRP) level and lipid profiles of healthy volunteers with prehypertension

February 2015

Coronary atherosclerosis still represents one of the main causes of death. Efficacious prevention should focus on early control of cardiovascular risk factors, including lipid profiles, which unable detect on sub-clinical cases. High-sensitive C-reactive protein (hs-CRP) can prove to be an early cardiac risk predictor. Aims of this study were to compare hs-CRP levels between healthy volunteer with normal blood pressure...

Author(s): Yuttana Sudjaroen

Determination of the priority areas for the rehabilitation of degraded forest lands

February 2015

Turkey has more than 21.67 million ha forest areas and 10.11 million ha of these forest areas are still degraded or highly degraded in 2012 year. These areas can only be transformed into a productive state with implementation of rehabilitation treatments. Determination of the priority of degraded forest areas for the rehabilitation is important issue and affected by many parameters in Turkey. Some important indicators...

Author(s): Ali Ä°hsan KADIOÄžULLARI and Ä°brahim TURNA

Ultrastructural changes in the neuronal superior colliculus in the early stage of streptozotocin-induced diabetes mellitus in rats

February 2015

The superior colliculus (SC) is a visuomotor center involved in the autonomic reflex adjustments of eye movements in response to visual stimuli. Diabetes mellitus (DM) is known to affect some visual pathway structures, but few studies have assessed the effects of diabetes on the SC. The aim of this study was to investigate the ultrastructural changes of SC neurons in the early period of streptozotocin (STZ)-induced...

Author(s): Tosawan Upachit, Passara Lanlua and Sirinush Sricharoenvej

A hybrid multilevel text extraction algorithm in scene images

February 2015

The textual pieces in scene images might often provide vital semantic data for visual content understanding, indexing and analysis; as a result, text extraction had become a significant research area in image processing and computer vision. In this paper, we propose a new hybrid multilevel algorithm to extract text in various scene images. The algorithm converts the Red – Green –Blue (RGB) image into...

Author(s): Tahani Khatib, Huda Karajeh, Hiba Mohammad and Lama Rajab

Effects of a Tabebuia avellanedae extract and lapachol on the labeling of blood constituents with technetium-99m

February 2015

Tabebuia avellanedae extract has been used in folk medicine in the treatment of some clinical disorders. Lapachol is an active compound from this medicinal plant. The procedure of labeling of blood constituents with technetium-99m (99mTc) could be used as an in vitro assay to evaluate some properties of natural and synthetic drugs. The aim of this work was to evaluate the effect of a T. avellanedae extract and lapachol...

Author(s): Ana Cristina da Silva Braga, Maria Luisa Gomes, Joelma Fonseca de Oliveira Fernandes, Nasser Ribeiro Asad, Sebastião David Santos-Filho, Carlos Alberto Sampaio Guimarães, Eric Heleno Freire Ferreira Frederico, and Mario Bernardo-Filho

Exact solutions for the nonlinear KPP equation by using the Riccati equation method combined with the G'/G - expansion method

February 2015

The improved Riccati equation method combined with the improved  - expansion method is an interesting approach to find more general exact solutions of the nonlinear evolution equations in mathematical physics. The objective of this article is to employ this method to construct exact solutions involving parameters of a nonlinear Kolmogorov-Petrovskii-Piskunov (KPP) equation. When these parameters are taken to be...

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

Assessment of non-ionizing radiation from radio frequency energy emitters in the urban area of Natal City, Brazil

January 2015

The massive increase of wireless communications in the world calls for responsible actions by governments in order to prevent possible health hazards. In addition to cellular towers overcrowding in urban areas, it is also important to consider other radio frequency radiations from different sources. The electric field intensity is one of the fundamental parameters to assess the exposure of human beings to Non-Ionizing...

Author(s): Fred Sizenando Rossiter Pinheiro, Técia Maria de Oliveira Maranhão, Mário Bernardo Filho, Márcio Eduardo da Costa Rodrigues, Gutembergue Soares da Silva, Thiago Palhares de Sousa, Manuel Antonio Bouzas Sanchis, André Luiz Severiano Câmara, João Paulo da Silva Gonçalo and Andrei de Abiahy Carneiro da Cunha Braga

Effect of the aging process on mechanical properties and machinability in AA6013 aluminum alloys

January 2015

This study investigated the effects of aging process on the mechanical properties and machinability in AA6013 aluminum alloy. To this end, AA6013 aluminum alloy samples were maintained in heat treatment furnace at 530°C (for 8 h) and placed in hot water (at 70°C), and then subjected to aging process by storing in heat treatment furnace (at 180°C) for various times (1, 3, 6, 9, 12 and 24 h). Changes in...

Author(s): Birol Akyüz and Safa Åženaysoy

Trade, population study and conservation aspects of Choraka/Choru in Kumaun Himalayas

January 2015

Medicinal plants constitute an effective source of traditional and modern medicine. Angelica glauca Edgew. is a high value medicinal aromatic plant species of the Himalaya. In this article, a brief profile of the herbal medicinal plant Choraka (A. glauca Edgew.) which is used in the traditional system of medicine and in folk medicines in the Kumaun Himalayas was presented. Regular supply of raw material for...

Author(s): D. Arya, D. Bhatt, G. C. Joshi and L. M. Tewari

Growth pattern of two crop species on bio-remediated hydrocarbon polluted soils

January 2015

The effectiveness of agricultural wastes as bioremediation materials is gaining research attention as a better option in mitigating the issue of crude oil effects in soil environment. In the present study, the growth performance of Telfairia occidentalis and Arachis hypogaea linn in crude oil polluted soil amended with plantain peels (PP) and cocoa pod husks (CPH) were investigated. Eight kilograms (8 kg) each of dried...

Author(s): Agbor R. B., Ekpo I. A., Kalu S. E., Bassey I. U., Okoi E. P. and Ude E. O.

Safety analysis on hazardous chemicals transportation by Indian roads

January 2015

In engineering industries, necessary safety measures during manufacturing, storage and loading of the chemicals which are dangerous in nature, also known as hazardous chemicals are generally taken. There are means to monitor and control the same, but once the product vehicle is loaded and leaves the plant premises, there is hardly any control over it. The safety of it largely depends on the condition of vehicles and the...

Author(s): Palanisamy Sivaprakash, Sebastian Joseph and Venkatesan Satheeswaran

Laminar free and forced convection cooling of a semi permeable open cavity

January 2015

Heat transfer inside a semi porous two-dimensional rectangular open cavity was numerically investigated. The open cavity comprises two vertical walls closed to the bottom by an adiabatic horizontal wall. One vertical wall is a porous and an inflow of fluid occurs normal to it. The other wall transfers a uniform heat flux to the cavity. It shows how natural convection effects may enhance the forced convection inside the...

Author(s): C. A. Chaves, W. Q. Lamas, J. R. Camargo, F. J. Grandinetti, C. A. C. Altemani

The fatigue flexural behavior of fiber reinforced concrete: Effect of the parameters of coarse aggregates

January 2015

The effect of the coarse aggregate type on the fatigue flexural behavior of concrete was investigated in this work. Three types of the coarse aggregates were selected from three different careers (CA1, CA2 and CA3). The mechanical parameters of these aggregates were determined (Los Anglos and Micro Deval). Prismatic specimens (70×70×280 mm) for each concrete mixture were made with aggregates of each source....

Author(s): H. Dilmi, C. Aribi, B. Safi, B. Bezzazi, M. Saidi and O. Lounas

Exploring the effectiveness of dialogue in improving health facility deliveries

January 2015

Maternal mortality is a concern worldwide with higher disparities of 1 in 16 in developing compared to 1 in 2800 in developed countries. Kenya’s maternal mortality ratio has increased from 414 per 100,000 live births in 2003 to 488 per 100,000 live births in 2009. In 2010 the figure increased to 530 per 100,000 live births. The purpose of the study was to explore the effectiveness of dialogue in improving health...

Author(s): Moth, Iscah A., Kamiruka Jack and Olayo Rose

An efficient hybrid distributed document clustering algorithm

January 2015

Recent advances in information technology have led to an increase in volumes of data thereby exceeding beyond petabytes. Clustering distributed document sets from a central location is difficult due to the massive demand of computational resources. So there is a need for distributed document clustering algorithms to cluster documents using distributed resources. The greatest challenge in this area of distributed...

Author(s): J. E. Judith and J. Jayakumari

Coastal climate and beach dynamics at Ponta do Ouro, Mozambique

January 2015

Annual field surveys conducted at Ponta do Ouro in Southern Mozambique have determined that coastal variability is driven by high wave energy and consequent northward longshore drift. There is a log-spiral headland-bay system marked by 80 m tall forested dunes in the south that give way to a broad flat sandy beach. Marine climate processes that affect coastal erosion and accretion are studied using local and remote data...

Author(s): Mark R. Jury,

Nutritional composition, functional properties and sensory evaluation of breads based on blends of ‘orarudi’ (Vigna sp) and wheat flour

December 2014

The proximate composition, functional and physical properties, as well as sensory evaluation of breads based on blends of wheat and ‘orarudi’ (Vigna sp) flour were investigated. Batches of ‘orarudi’ (Vigna sp) were separately put in a container and subjected to natural lactic acid fermentation in deionized water in a ratio of 1:3 (w/v) at 28 ± 2°C for 24 h. The fermented samples were...

Author(s): Onoja, U. S., Akubor, P. I., Njoku Ivoke, Atama, C. I., Onyishi, G. C., Ekeh, F. N.,  Eyo, J. E. and Ejere, V. C.

Influence of nanosilica and a polycarboxylate superplasticizer on the rheological and electrokinetical properties of cement pastes

December 2014

The effect of individual and combined addition of both nanosilica (NS) and polycarboxylate ether plasticizer (PCE) admixtures on cements pastes was studied. The sole incorporation of NS increased the water demand, as proved by the mini-spread flow test. An interaction between NS and hydrated cement particles was observed in fresh mixtures by means of particle size distribution studies, zeta potential measurements and...

Author(s): Madjid Samar, Abdelbaki Benmounah, Brahim Safi, Rabia Kheribet and Mohammed Saidi

Knowledge management for plant biosecurity in South Asia

December 2014

Knowledge management promotes an integrated approach to identify, capture, evaluate, retrieve and share information assets for enhanced knowledge processing. Agriculture forms the backbone of rural livelihoods and national economy in South Asia. The food security which largely depends on plant biosecurity in South Asian countries is challenged by devastations in agricultural crops caused by diseases and pests and the...

Author(s): R. K. Khetarpal and Kavya Dashora

Reiter's syndrome presenting with lumbar and leg pain as the chief complaint: A case report and literature review

December 2014

Reiter’s syndrome is usually known as a clinical triad of arthritis, urethritis, and conjunctivitis. Peripheral nerve involvement in Reiter's syndrome is extremely rare. We report here on a 36-year-old man presenting to the orthopedic department with a chief complaint of lumbar and leg pain who initially was found to have lumbar intervertebral disc and was diagnosed as Reiter’s syndrome 3...

Author(s): Qingjun Liu, Jianyun Miao, Kejian Lian and Lianshui Huang

Queue size comparison for standard transmission control protocol variants over high-speed traffics in long term evolution advanced (LTE-A) network

December 2014

The employment of the existing protocols such as Transmission Control Protocol (TCP) cannot achieve the requirements of high-speed networks such as long term evolution advanced (LTE-A) due to the large-bandwidth and low-latency links used in this network. LTE-A network is the continuation of 3GPP-LTE (3GPP: 3rd Generation Partnership Project) and it is targeted to advanced development of the requirements of LTE in terms...

Author(s): Ghassan A. Abed

Effect of welding parameters in flux core arc welding (FCAW) with conventional and pulsed current in the efficiency and fusion rate of melting coating

December 2014

This study was conducted over the welding parameters associated with three levels of pulse to lead to important data for the deposition of metal on martensitic stainless steel, through tubular electrode EC410NiMo MC – ESAB by the conventional and pulsed flux core arc welding (FCAW) process in SAE 1020 steel. Were applied three current levels, 170A, 200A e 230A with welding speed of 300 mm/s, 350 mm/s and 400 mm/s,...

Author(s): Celso Alves Correa, Niederauer Mastelari and Joao Roberto Sartori Moreno

Lipoxygenase assay and cutaneous erythema test have discovered a potent anti-inflammatory activity shown by some genus Prunus plants

December 2014

Medicinal plants have gained considerable interest in treatment of various medical conditions including inflammation. Rosaceae (the rose family) family of flowering plants having largest genus Prunus (plums, peaches, cherries and almonds) is one of the most economically important families.  In current study, anti-inflammatory activities of three fruit species Prunus persica, Prunus avium...

Author(s): Gulfishan, Naveed Akhtar, Tariq Mahmood, Qazi Adnan Jamil, Shafia Arshad, Hira Khan and Muhammad Sohail

Effect of transplanting age on seed yield and quality in Davana (Artemisia pallens)

November 2014

Davana (Artemisia pallens Wall ex. D.C.) is an important high valued annual medicinal and aromatic herb of India belonging to the family Asteraceae. An experiment was conducted at Department of Seed Science and Technology, Tamil Nadu Agricultural University, Coimbatore during 2011 to optimize the age of seedling for transplanting Davana to maximize the growth, herbage yield seed yield and seed quality attributes of...

Author(s): M. Jayanthi and A. Vijayakumar

Modification of the adaptive Nadaraya-Watson kernel regression estimator

November 2014

Nadaraya-Watson (NW) kernel regression estimator is a widely used and flexible nonparametric estimator of a regression function, which is often obtained by using a fixed bandwidth. Several studies showed that the adaptive kernel estimators with varying bandwidths have better performance results. In this paper, a new improvement of the NW kernel regression estimator is proposed and the bandwidth of this new improvement...

Author(s): Khulood Hamed Aljuhani and Lutfiah Ismail Al turk

Design considerations for a sustainablepower energy system in Khartoum

November 2014

Application of renewable energy in Sudan is a major issue in strategic planning for alternatives fossil fuels to provide part of local energy demand. Sudan is an important case study in the context of renewable energy because Sudan possesses relatively high profusion of solar radiation, moderate wind speeds. This paper discussed the efficient system of sustainable renewable energy for domestic used and its total cost....

Author(s): Abdallah Z. M. E., M. F. M. Zain and Sopin K.

Checklist of tropical algae of Togo in the Guinean Gulf of West-Africa

November 2014

The phytoplankton is an important part of the biodiversity and one of the bases of food networks of freshwater, brackish and marine environments. This study is carried out to record the algae flora (microalgae and macroalgae) in Togo regarding the floristic diversities. The results show that 795 species of microalgae have been recorded in Togo belonging to 134 families, nineteen groups among which the most important in...

Author(s): ISSIFOU Liassou, Atanlé Kossivi, RADJI Raoufou, LAWSON H. Latekoe, ADJONOU Kossi, EDORH M. Thérèse , KOKUTSE A. Dzifa, MENSAH A. Akossiwoa and KOKOU Kouami

Evaluation of the drying rate constant, drying efficiency, nutrients and sensory qualities of dried vegetables using solar dryer and open-air sun drying methods

November 2014

Utazi (Gongromena ratifolia) and Nchuanwu (Occimum americanus) were dried using solar dryer and open- air sun drying methods. 200 g of each sample was used. The weight losses were used to determine the reduction in moisture content. Drying was assumed to have taken place in the falling- rate period, which enabled the use of only one drying rate constant, K. Graphs of ln(M0-M) versus time were used to obtain the drying...

Author(s): Onoja U. S., Iroegbu J. C., Akubor P. I. , Njoku Ivoke, Ekeh F. N., Ejere V. C., Eyo J. E., Attama C. I. and Onyishi G. C.

Retrofitting industrial in electrical motor type: A matter of energy efficiency and reduction of maintenance

November 2014

This report aims to identify, in terms of economic and technical aspects, an electric motor whose characteristics meet a proposed replacement of a direct current (DC) motor in an aluminum extrusion plant, whose preventive maintenance has in the last years, the problem of technical and operational orders. Data relating to the preventive maintenance of motors in operation were used to estimate the performance of an...

Author(s): Claudeir Alexandre Silvestre, Paulo Henrique Nicoletti and Marcio Abud Marcelino,

Effect of industrial tannery effluent on soil fungi and fungal protease/cellulase activity on modified rice husk /modified sawdust medium (MRHM/MSDM)

November 2014

The release of unprecedented tannery effluents into agricultural fields constitutes danger to land fill and nutrient cycling as well as organic matter processing. In the present study, tannery effluent discharged soil (polluted landfill), undischarged soil (control) and effluent discharged (waste) were collected from the surrounding areas of tannery industry. The physico-chemical and biological properties and soil...

Author(s): S. D. Emmanuel, I. K. Adamu, S. Y. Mohammed, A. Ejila, M. I. Ja’afaru, Y. Amos, M. Bobai and O. Agbor

Charaterization of galactose-specific lectin from the skin mucus of African catfish Clarias gariepinus aBurchell, 1822

October 2014

A galactose-specific lectin was purified from the skin mucus of African catfish (Clarias gariepinus) and the physicochemical properties determined. Phosphate buffered saline extract of the skin mucus of African catfish specifically agglutinated erythrocytes of rabbit and human blood group B, but did not agglutinate bat, rat, hen and human blood A and O erythrocytes. The haemagglutinating activity of the lectin was...

Author(s): ODEKANYIN Oludele Olayemi and KUKU Adenike

Isolation and identification of Staphylococcus aureus from bovine and the detection of its coagulase gene (coa) using polymerase chain reaction (PCR)

October 2014

Two hundred and fifty different samples were collected from bovine and examined for the presence of staphylococcal bacteria. 189 isolates were able to grow on the mannitol salt agar (MSA), known as staphylococci. Coagulase test revealed that 165 isolates were able to produce this enzyme;  138 of these isolates were Staphylococcus aureus which appeared in 55.2% of the isolates. Deoxyribonuclase (DNAase), urase and...

Author(s): Basil A. Abbas, Mohammed H. Khudor and Basim M. Hanoon

Semi-analytic solutions to Riemann problem for one-dimensional gas dynamics

October 2014

This work deals with the implementation of reduced differential transform method (RDTM) for solving the Riemann problem for gas dynamics in one dimension. The RDTM is an analytical method that can be applied to many linear and nonlinear partial differential equations and is capable of reducing the size of computations. Using this method, the solution is calculated in the form of convergent power series with easily...

Author(s): Emad A. Az-Zo’bi and Kamal Al Dawoud

Evaluation of risk factors for surfactant re-dosing in neonates with respiratory distress syndrome

October 2014

Respiratory distress syndrome (RDS) is a common cause of mortality and complications in the preterm neonates. Specific treatment of this disease is endotracheal surfactant administration. Some neonates need more than one dose of drug (re-dosing) so that in addition to the cost, avoidace of treatment complications and, if necessary, timely prescribtion are of high importance. In this study, the effects of the...

Author(s): Ali Aghayar Macooie, Zahra Fakoor, Kamran Dehgan, Mohammad Nanbakhsh, Ahmad Ali Nikibakhsh, Hashem Mahmoodzade, Ahmad Jamei Khosroshahi and Hamid Reza Khalkhali

Comparison of oral to intranasal administration of midazolam in children for dental surgery

October 2014

The current study compares intranasal and oral midazolam for effect on sedation for patients requiring dental procedure. Eighty subjects between the ages of 5 and 12 years were received randomly either intranasal (0.2 mg/kg) or oral (0.5 mg/kg) midazolam. The observer assessed the children for sedation level at the following time points: Immediately before the drug was administered, and 20 and 30 min after drug...

Author(s): Maisa A. Kamar, Ghazi S. Aldehayat, Basel M. Makhamreh and Saba S. AlMadain

Influence of post-fire successional gradients in Pinus brutia forests on ground beetle community changes

October 2014

Fire is a common disturbance factor in Mediterranean ecosystems. It is a very spectacular ecological force because it destroys ecosystems in a very short time. Insect groups are commonly used as indicators to evaluate habitat changes after disturbances. In this study, the successional changes were evaluated by the composition of ground beetles communities in East Mediterranean pine forests. Ground beetle fauna was...

Author(s): Burcin Yenisey Kaynas

Numerical simulation of rainfall-induced rock mass collapse and debris flow

October 2014

Geologic disaster of rainfall-induced rock collapse and debris flow is an essential part of research in the field of geotechnical engineering. Based on the discrete element method, the article derived the constitutive model of particles bond-damage fracture-move. A two-dimensional slope model of rock mass collapse was established to simulate slide of rock mass collapse and dynamic evolution process of debris flow. The...

Author(s): Jikun Zhao, Dan Wang, Daming Zhang and Huiqing Zhang

Evaluation for nutritive values and antioxidant activities of Bang Chang’s Cayenne pepper (Capsicum annuum var. acuminatum)

October 2014

This objectives of this study were evaluated nutritive values of Bang Chang’s Cayenne pepper (Capsicum annuum var. acuminatum) and investigates its biological characteristics on health promotion, such as, antioxidant activities. The research was conducted by collecting sample, separating dried edible parts, which were determined nutritive values, including proximal analysis of water content, crude protein, crude...

Author(s): Yuttana Sudjaroen

Effects of elevated temperature on seed germination and seedling growth on three cereal crops in Nigeria

September 2014

The effect of elevated temperature on seed germination and seedling growth was investigated on three Nigerian cereal crops: maize, rice and sorghum. Seeds where then allowed to germinate in controlled growth at 37 (control: room temperature), 40, 42, 45 and 50°C and monitored for germination, shoot length and root length for 24, 48, 72 and 96 h, respectively. Seeds were also sown in small poly bags in triplicates...

Author(s): Iloh, A. C., Omatta, G., Ogbadu, G. H. and Onyenekwe, P. C.

Antioxidant and antibacterial activities of saponin fractions of Erythropheleum suaveolens (Guill. and Perri.) stem bark extract

September 2014

Erythropheleum suaveolens stem bark saponins fractions were investigated for antioxidant and antibacterial activities. In vitro systems such as, 1, 1- diphenyl-2-picrylhydrazyl (DPPH) radical, reductive potential and inhibition of lipid peroxidation were carried out to determine the antioxidant activities. The antimicrobial activity was determined using the hole-in-plate agar diffusion technique and the minimum...

Author(s): Akinpelu B. A., Igbeneghu O. A., Awotunde A. I., Iwalewa E. O. and Oyedapo O. O.

Southern Ethiopia Rift Valley lake fluctuations and climate

September 2014

This study describes hydrological fluctuations of Lake Abaya-Chamo via direct local measurements in relation to time-integrated climate anomalies. Reconstruction of an index involved compositing lake level and flow discharge station records in the period 1983-2009. Satellite and model interpolated rainfall, latent heat flux and run-off anomalies follow the hydrological records when summed over and lagged by one year....

Author(s): Mark R. Jury

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