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Structural modification induced by air pollutants in Plantago lanceolata leaves  [PDF]
Irina Neta GOSTIN
Analele Universitatii din Oradea, Fascicula Biologie , 2009,
Abstract: Some structural parameters of Plantago lanceolata leaves, which may be considered as biomarkers, were investigated, in order to establish what modifications occur under the pollutants action. The material was represented by leaves of different ages collected from sites with different pollution degrees of the Ceahlau Mountain.External symptoms such as necrotic areas were observed on plants leaves exposed to air pollution. The leaf structure of the analyzed species show some dark deposits in the assimilatory cells, especially from palisade parenchyma. The necrotic areas shows hypertrophied assimilatory cells with thick walls and tannin deposits. Solid deposits are present on both on upper and lower epidermis.
Radiochemical Pollutants Concentration in Ghanaian Cement by Instrumental Neutron Activation Analysis and (γ-Ray Spectrometry
D.O. Kpeglo,H. Lawluvi,A. Faanu,A.R. Awudu
Research Journal of Environmental and Earth Sciences , 2012,
Abstract: Instrumental Neutron Activation Analysis (INAA) has been used to identify and quantify concentrations of eighteen major, minor and trace elements (Ca, Fe, Al, Sc, Na, K, Ti, Mn, Cr, Zn, Co, As, Cd, Hg, V, La, U and Th) in five different brands of Ghanaian cement samples used in the building and construction industry. The (γ-spectrometric and INAA techniques used for the determination of U, Th, and K complemented each other very well in this study. Generally, concentrations of toxic elements determined in the five brands were low. However, the continuous inhalation or ingestion by occupational staff makes the smallest concentration of these toxic elements a potential risk to their health.
MEDITERRANEAN FOREST TREE DECLINE IN ITALY: RELATIONSHIPS BETWEEN DROUGHT, POLLUTANTS AND THE WAX STRUCTURE OF LEAVES  [cached]
E. PAOLETTI,F. BUSSOTTI,P. RADDI
Annali di Botanica , 1996,
Abstract: After presenting the situation of forest decline in Italy and analyzing the factors that play a contributing role, tbis paper studies the response of the epicuticular wax structures and the stomata in ten broadleaf species and one conifer to fog-like treatments with acids andlor surfactants and to severe water stress. The main results are that wax structure alterations vary in intensity in the different species studied and that the microstructural alterations observed in field conditions cannot be attributed only to severe drought. since sample trccs put through water stress simulations do nol differ significantly from controls. In the artificial surfactant treatment, a positive relationship between structural damage to tbe stomata and transpiration suggests possible synergies between the effects of drought and those of pollutants in inducing stress conditions in Mediterranean vegetation.
Compressive and Flexural Strengths of Cement Stabilized Earth Bricks Reinforced with Treated and Untreated Pineapple Leaves Fibres  [PDF]
Nounagnon A. Vodounon, Christopher Kanali, John Mwero
Open Journal of Composite Materials (OJCM) , 2018, DOI: 10.4236/ojcm.2018.84012
Abstract:
This study compares the effect of treated pineapple leaves fibres (T-PALF) with sodium hydroxide solution and untreated fibres (N-PALF) on the compressive and flexural strength of earth bricks stabilized with 3% and 5% cement. The fibre content ranged from 0% to 5% in steps of 1% by weight. The compressive strength tests were made at 7, 14, 21 and 28 days of curing; the flexural strength test were conducted at 28th day only. The results show that the T-PALF had a higher compressive strength when comparing to the N-PALF. The highest compressive strength of the bricks was obtained at 28 days of curing. The compressive strength at 28 days of stabilized brick at 3% and 5% of cement reinforced with T-PALF were 4.01 and 4.81 MPa, respectively, while the one reinforced with N-PALF was 3.19 and 4.63 MPa, respectively. The results further show that the highest flexural strength of both stabilized bricks at 3% and 5% of cement reinforced with T-PALF and N-PALF was obtained with the bricks stabilized with 5% of cement reinforced with T-PALF. This results show that bricks stabilized with 5% cement and reinforced with 3% of treated fibres content are good for construction of load bearing walls. It was observed; a significant improvement of the reinforced blocks under flexure than under compression.
Evaluation structural diversity of Carpinus betulus stand in Golestan Province, North of Iran
VAHAB SOHRABI,RAMIN RAHMANI,SHAHROKH JABBARI,HADI MOAYERI
Nusantara Bioscience , 2011,
Abstract: Sohrabi V, Rahmani R, Jabbari S, Moayeri H. 2011. Evaluation structural diversity of Carpinus betulus stand in Golestan Province, Northern Iran. Nusantara Bioscience 3: 23-27. In order to investigate structural diversity of Carpinus betulus type in Golestan province 30 modified Whittaker plots by systematic random system were located. Per plot the characteristic of trees and shrubs species (Species name, diameter and height of trees) are recorded. The heterogenity indices of Simpson, Shannon–Wiener, Simpson’s reciprocal and number of equally common species were used for the quantitative data. Toward better understand from diversity condition in horizontal and vertical composition of stand, the diameter divided in 10 cm classes and Method of Mohajer and the height divided in 10 m height classes and dominant height, then number of diversity of each class extracted by Ecological Methodology software V.7. The results showed with increase of diameter and height classes, decrease species diversity. Also regeneration layers diversity has significant difference with trees layers. Thus, the study of biodiversity changes in different diameter and height category cause ecologically precise perspective in management of forest stands.
SIMULATION OF HADRON MASSES AND ATOMIC NUCLEI EXITED STATES IN THE GLUON CONDENSATE MODEL Моделирование массы адронов и энергии возбужденных состояний атомных ядер в модели глюонного конденсата
Trunev A. P.
Polythematic Online Scientific Journal of Kuban State Agrarian University , 2012,
Abstract: In this article we consider a scalar model of the gluon condensate, in which bubbles are formed - glue balls. It is shown that the mass of the known hadrons as well as nuclei exited states are described with the acceptable accuracy by the integral of the condensate density in terms of the glueball
Study of the avalanche to streamer transition in the glass RPC exited by UV light  [PDF]
V. Ammosov,V. Gapienko,A. Kulemzin,A. Semak,Yu. Sviridov,V. Zaets
Physics , 2002,
Abstract: A small glass RPC filled with Ar/Isob./Freon mixture has been exposed to a UV laser light. Avalanche and streamer regimes of discharge were reached in a fixed region of the RPC exited by the UV. A dependence of avalanche to streamer transition process on the laser beam intensity and on the applied high voltage was studied. Two types of the streamer signal have been observed. Using a CCD TV camera, pictures on multi-streamer propagation over RPC were obtained.
Incidence of Childhood Cancers in Golestan Province of Iran
Abdolvahab Moradi,Shahryar Semnani,Gholamreza Roshandel,Narges Mirbehbehani
Iranian Journal of Pediatrics , 2010,
Abstract: Objective: This paper presents the incidence rates of childhood cancers using the data obtained from Golestan population based cancer registry (GPCR) between 2004 and 2006.Methods: GPCR registers only primary cancers based on standard protocols of the international association of cancer registries (IACR). We collect data on newly diagnosed (incident) cancer cases from all public and private diagnostic and therapeutic centers of the whole province. CanReg-4 software was used for data entry and analysis.Findings: Totally 5076 cancer cases (all ages) were diagnosed in GPCR between 2004 and 2006. Of these, 139 (2.74 %) were children (aged 0-14 years) with mean (±SD) age of 8.06 (±4.48) years. The age standardized incidence rates for childhood cancer were 119.8 and 78.3 per 1000000 person-years in male and female children, respectively. Leukemia was the most common childhood cancer in Golestan province of Iran. Lymphomas and central nervous system tumors were the second and third ones, respectively.Conclusion: The incidence rates of childhood cancers were relatively high in Golestan province of Iran. So, controlling of childhood cancers should be mentioned as an important issue in health policy making in this area.
Investigating the Perceptions of Residents in Golestan National Park, Iran  [cached]
reza leylian,aryan amirkhani,Ansari Mojtaba,Bemanian Mohammad Reza
Asian Social Science , 2010, DOI: 10.5539/ass.v6n9p64
Abstract: The natural characteristics of protected areas have changed for a variety of reasons through time. Changes in protected area landscapes can occur because of natural and/or cultural processes. Natural processes such as geomorphologic disturbance and climatic condition can permanently and/or temporarily change the characteristics of the environment. In addition, changes in human needs, knowledge and activities are the cultural driving forces behind changing characteristics of landscape through time. Herein, the contact between citizens and open spaces continues to block the successful movement of open and especially urban spaces. One of the most important parts of this relationship is local citizens’ awareness of open spaces. In this paper key issue in the contacts between citizens and Golestan National Park (GNP) in western part of Iranian capital, Golestan is investigated. In fact, in this paper our objectives are to describe and clarify residents’ attitudes regarding the costs and benefits of GNP, explore the effects of people’s awareness of park management through non- governmental organization.
WHITE CEMENT IN SUSTAINABLE DEVELOPMENT
Y.C.P RAMANA BABU,B.SAI DOONDI,N. M .V .VAMSI KRISHNA,K.PRASANTHI
International Journal of Engineering Science and Technology , 2013,
Abstract: India is one among the fast developing countries in the world in the areas of Infrastructure. Now a day, Carbon monoxide (CO) and carbon dioxide (CO2) are the temporary atmospheric pollutants in the environment chiefly emitted from the fuel burning vehicles and street lights which lead to global warming and pose a major threat tothe survival and sustainable development. This paper deals with the principal purpose of use of white cement in pavement design which will take care of the Green house gases (i.e., CO and CO2) and also saves lot of money in the long run process. A small amount of these gases in environment can cause major problems over time. Use of white cement in composite pavement design where there is heavy traffic loads are acting as well as number of vehicles are more such as junctions, bus stops, check posts etc., can perform better and acts asenvironment friendly. Its light colour reflects more than bituminous pavement so that it can be easily identified and avoid accidents to some extent. White cement helps to lower the average bus stop, junction temperature providing comfort to the people because it has high solar reflectance there by reducing “urban heat island” effect. In addition to this it has some more advantages which increase the sustainability, durability and workability of the pavements.
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