Abstract：
:The aim of this study is to determine some physical and mechanical properties of Paulownia tomentosa wood grown in Turkey. The samples trees harvested from Kargi in Corum. Physical properties including air-dry density oven-dry density basic density swelling, shrinkage and oven-dry and air-dry thermal conductivity coefficients; mechanical properties including bending strength, modulus of elasticity in bending, compression strength parallel to grain, hardness, bonding strength were analyzed. Paulownia tomentosa wood's air dry and oven dry densities were determined as 0.317 and 0.294 g cm(-3); basic density was determined as 0.272 g cm(-3); volumetric shrinkage and swelling were determined as 7.78 and 8.41%; tangential, radial and longitudinal air-dry thermal conductivity coefficients were determined as 0.089, 0.090 and 0.133 kcal/mh degrees C, respectively. Fiber saturation point (FSP) was found 28.79%; bending strength, Modulus of elasticity in bending, compression strength parallel to grain and Brinell hardness values (parallel and perpendicular to grain) were determined as 43.56 N mm(-2), 4281.32 N mm(-2), 25.55 N mm(-2), 2.01 kgf mm(-2) and 0.88 kgf mm(-2), respectively. Consequently paulownia wood can be widely used for various purposes such as house construction, furniture making, pulp and paper and handicrafts.
journal_name
J Environ Bioljournal_title
Journal of environmental biologyauthors
Akyildiz MH,Kol HSsubject
Has Abstractpub_date
2010-05-01 00:00:00pages
351-5issue
3eissn
0254-8704issn
2394-0379journal_volume
31pub_type
杂志文章abstract：:Three trace heavy metals viz., nickel, copper and zinc were studied for their toxic action against Poecilia retriculata (Peters). Among these, copper was found to be most active followed by zinc and nickel. Accumulations of these metals as well as behavioural studies were carried out after exposing fish to sub-lethal ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2001-04-01 00:00:00
abstract：:Photocatalytic degradation of chemical pollutants in water was investigated using semiconductor oxide catalysts, zinc oxide (ZnO) and titanium dioxide (TiO2) and phenol as the substrate. Influence of various parameters such as characteristics of the catalyst, irradiation time, substrate and catalyst concentrations, pH...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2010-05-01 00:00:00
abstract：:A bacterium capable of biodegrading surfactant sodium dodecyl sulphate (SDS) was isolated from Antarctic soil. The isolate was tentatively identified as Pseudomonas sp. strain DRY15 based on carbon utilization profiles using Biolog GN plates and partial 16S rDNA molecular phylogeny. Growth characteristic studies showe...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2013-11-01 00:00:00
abstract：:The aim of the present study was to study the effects of straw enriched environment on behaviors of nursery piglets reared in the farrowing pens. Fourteen litters (Large White x Landrace) weaned at 35 days of age were reared in the modified farrowing pens, flatdecks (F) or straw enriched pens (P), until 70 days of age...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2014-05-01 00:00:00
abstract：:Vertical distribution of polychaetes in a semi-enclosed brackishwater pond of Nethravathi estuary was studied for one year from February 2004 to January 2005. The semienclosed brackishwater pond is a shallow water body with an average depth of 1-1.5 m with an area of 12 ha having direct connection with the estuary whi...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2009-11-01 00:00:00
abstract：:Genetic variation was assessed utilizing intron-flanking EST-specific markers among genotypes of Artemesia annua collected from two sampling sites viz. Nubra (9,600 ft) and Leh (11,500 ft) valleys of the trans-Himalayan region, Ladakh, India. The available ESTs (3,60,906) sequences of A. annua were aligned with the ge...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2012-11-01 00:00:00
abstract：:The present study was carried out on Paulownia tomentosa (6), Paulownia elongate (4), Paulownia fortunei (5) and Paulownia fortunei x tomentosa (1) origins at Kastamonu Forest Nursery. The seedling height growth (SH), root collar diameter (RCD), dry root percentage (DRP) and seedling percentage (SP) of one-year old se...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2006-07-01 00:00:00
abstract：:Time is particularly critical for an oil spill occurring in the ocean as wind and current can rapidly spread the oil over a large area in a short time. Using the features of sensor surveillance system and mathematical trajectory models, the cooperation of surveillance and trajectory under oil spill emergency response ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2016-09-01 00:00:00
abstract：:The present study illustrates the phytotoxic effect of As on wheat seedlings and pre-application of salicylic acid in alleviating toxic effect of arsenic. Wheat seedlings treated with different concentrations (50-400 μM) of arsenic decreased the germination rate (34.7% and 86.9%), root and coleptile length, fresh and ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2015-01-01 00:00:00
abstract：:Petrochemical industry have severe problem in disposing effluent and semisolid sludge despite repeated recycling. It requires further treatment prior to disposal of sludge. In recent years biological treatment methods received much attention and considered as an efficient low-cost treatment. One such method is vermicu...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Nickel chloride, heavy metal widely used in industries was investigated in the present study for histopathological studies in silver carp (Hypophthalmichthys molitrix). Fish were exposed for 10, 20 and 30 days in sublethal concentration of nickel 5.7 mg/l. The histopathological changes were studied in the gill, liver,...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2006-05-01 00:00:00
abstract：:The present study investigates the responses of Indian palak (Beta vulgaris L. cv. All Green H1) exposed to cadmium (Cd) and zinc (Zn) at growth, biochemical and physiological levels. The results revealed that Cd and Zn accumulation was higher in shoots as compared to the roots of B. vulgaris plants. The increased app...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2014-07-01 00:00:00
abstract：:Ultrastructural changes in the gills of cat fish Heteropneustes fossilis exposed to coal mining effluent water collected from Rymbai river in Jaintia hills, Meghalaya, India was investigated under scanning electron microscopy (SEM). The pH of effluent water in the river was significantly low (2.5-3.0) due to coal mini...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2012-07-01 00:00:00
abstract：:The samples of ambient air collected from six different sites of the city during three different seasons on glass fibre filter papers were estimated for selected metals. The maximum value of Pb (0.191 microg m-3), Cd (0.015 microg m-3), Zn (0.198 microg m-3), Ni (0.582 microg m-3) and Cu (0.396 microg m-3) was observe...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2013-09-01 00:00:00
abstract：:The locomotion behavior of Pseudorasbora parva was observed in laboratory under various light intensity, turbidity, structural complexity and zooplankton size, focusing on swimming speed and time of search, approach, and attack. At low prey density, the satiation level affected the swimming speed only slightly. The se...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2005-04-01 00:00:00
abstract：:Raw pesticide import data from 1977 to 2009 obtained from the Ministry of Agriculture in Costa Rica were processed and analyzed. The quantity of specific active ingredients (a.i.), and chemical groups were calculated by year and presented in ten-year periods. Three sets of environmental hazard indicators were construc...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:Phytotoxic effect of diesel contaminated soil on germination rate of Lactuca sativa and Ipomoea batatas, at two concentrations ranges (0-6ml and 0-30ml), were investigated and compared. Diesel soil contamination was simulated and soil samples were taken from contaminated soil at 1, 5,10, 15, 25, 50, 75 and 100 days sh...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2015-11-01 00:00:00
abstract：:Local environment (temperature and relative humidity) affects reproductive biology in Pyrostegia venusta (Bignoniaceae) growing at Agra and Mysore. At Agra, the species flowers profusely during December to March, but fails to bear fruits. At Mysore, on the other hand it flowers during November to February and produces...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2009-03-01 00:00:00
abstract：:This investigation was conducted in an area of oil spill along the east coast of Thailand to examine the relations among cytochrome P450 1A activity in liver and PAHs in the bile of the tonguefish and petroleum hydrocarbons in the sediments. PAH sediment concentrations in the reference and oil spill areas were 5.03 +/...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2007-10-01 00:00:00
abstract：:Creating precise climatic maps (temperature and precipitation map especially) on small areas such as drainage basins or landform units is always very useful for ecology of plants, distribution of vegetation and also different types of agricultural land. The geographic information system (GIS) analysis of several key-f...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2012-04-01 00:00:00
abstract：:In freshwater ecosystems, rotifers and cladocerans are ideal prey for fish larvae whereas copepods, due to their purported low growth rate and predatory tendency, are not. We recently isolated the parthenogenetic Elaphoidella grandidieri (Gueme et Richard, 1893) a benthic freshwater harpacticoid, from a fish farm in t...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2011-07-01 00:00:00
abstract：:This paper presents the growth response of 25 yr old Lebanon cedar (Cedrus libani A. Rich.) plantation to thinnings of different intensities in Isparta in western Turkey. The thinning intensity was measured by using the residual basal area (%) as parameter. In spring of 2005, three treatments were tested; light, moder...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2010-09-01 00:00:00
abstract：:Traditional medicinal plants contain a wide variety of chemicals that have potent antibacterial activity. To find an alternative agent of overcoming the problems of methicillin-resistant Staphylococcus aureus (MRSA), the antibacterial mechanism of Ponciruss trifoliata against MRSA was investigated. Ethyl acetate (EtOA...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2016-01-01 00:00:00
abstract：:Spergularia marina (Caryophyllaceae) is a halophytic species and widely distributed among the sea shores of Turkey. Its seeds maybe unwinged or winged. Laboratory experiments were conducted to determine the effects of salinity (0, 50, 100 and 500 mM NaCl) and temperature (10, 15, 25, 30, 35 degrees C) on seed germinat...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-11-01 00:00:00
abstract：:Effects of basic oxygen furnace (BOF) slag, inorganic nutrients and H2S on the germination of resting cysts of two toxic dinoflagellates Alexandrium catenella/tamarense and Gymnodinium catenatum were studied in batch cultures. The germination rate of the test species has increased by 23-25%, when the concentration of ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2004-04-01 00:00:00
abstract：:Agricultural practices such as harvesting of crops cause the pathogens to disseminate in abundance and may cause diseases, like skin and respiratory allergies in an epidemic form. Also the farm workers were likely to be exposed repeatedly to high doses of fungal spore allergens from crop harvesting operations. At Srik...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:The gene induced in response to Cd exposure in microalga Nannochloropsis oculata was examined in this investigation. In order to isolate this gene by using nested PCR, degenerated primers were designed on the basis of highly conserved regions of the amino acid sequences of various phytochelatin synthase. The size of t...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-07-01 00:00:00
abstract：:Epigeic earthworm, Perionyx excavatus were cultured on a variety of organic wastes amended with cattle manure in different seasons to know the influence of different organic waste-diets and seasonal environmental factors on life activities of epigeic earthworm, Perionyx excavatus. Results showed that growth and reprod...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2015-09-01 00:00:00
abstract：:Alcoholic extract of whole fruit of Momordica charantia was prepared. Adult healthy albino rats were divided into four groups and received a dose of 6 mg/l00 gm. body weight of alloxan monohydrate. Animals of group I served as diabetic control group. The animals of II, III, and IV groups received 25 mg, 50 mg and 75 m...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:The boundaries of landscape policies often coincide with political or economic boundaries, thus creating a situation where a unit of landscape protection or management reflects more its present political status than its historico-geographical situation, its historical function and formation. At the same time, it is ev...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2012-04-01 00:00:00
