Kent a?açlar? karbon sal?n?m?n? azaltmaya yönelik depolayan ve tutan en önemli havuzlar?ndand?r. Karbon depolama tutma oran? her bir a?ac?n a?aç türü, boyu, ya?? yaprak biyokütlesi sa?l?kl? durumuna ba?l? olarak do?rudan ili?kilidir. Bu çal??mada; kentsel yol a?açlar?n?n yüzeyi biyokütlesinin hesaplanmas?nda Nowak (1996) taraf?ndan geli?tirilmi? formül, yapraklardaki tahmini için ise Tu?luer (2...

Cupressaceae pollen is responsible for winter respiratory allergies in the Mediterranean area. Pollen grains of this diverse family share same characteristics under light microscopy. Consequently, partial contribution each species to airborne spectrum cannot be determined with conventional aerobiological methods. Studies on major aeroallergens offer better information allergic sensitization and...

BACKGROUND Bee pollen has been proposed as a food supplement, but it can be a dangerous food for people with allergy. We study an allergic reaction after ingestion of bee pollen in a 4-year-old boy who had developed rhinitis in the last spring and autumn. METHODS We performed a prick-by-prick test with bee pollen and skin prick tests with the most important local pollens, house dust mites, co...

The one-seeded, serrate leaf margined junipers of Southwestern United States and northern Mexico consist of J. angosturana, J. californica, J. coahuilensis var. arizonica, J. c. var. coahuilensis, J. monosperma, J. pinchotii, J. occidentalis var. australis, J. o. var. occidentalis and J. osteosperma. Recent nrDNA and trnC-trnD sequence data were compared with RAPDs analysis and two of the taxa ...

environmental pollution with heavy metals is a global struggle. phytoremediation is an effectiveand low-cost technology for refinement of polluted soils. this research was conducted in zanjan province(located in north west iran) where metallurgical industries are developed quickly. in this study, based on theheavy metals contamination of soil in the studied area six sampling sites were selected...

Minimizing air, water, and soil pollution are very important for a sustainable environment. Particularly, ensuring the continuity of fertility without deteriorating structure is important. This objective can be achieved only by determining physical, biological, chemical properties atmospheric deposition taking required measures in agricultural lands. Trees plants reflect quality especially they...

In flammability assessment, the terpene effect is usually studied using their total or subgroup content, missing, therefore, information that could be provided by molecules themselves. this study, specific role of terpenes on leaf was sought comparing different levels identification—total, (i.e. mono-, sesqui-, and diterpene), single compound—as well as interactions with fuel moisture content (...

Recent taxonomic treatments of the genus Harpagonella have included only one lower taxon, Harpagonella palmeri A. Gray. However, a larger-fruited variety of Harpagonella palmeri from Arizona and Sonora was described by I.M. Johnston in 1924. He continued to recognize this taxon - Harpagonella palmeri var. arizonica - in his treatment of the genus in Kearney and Peebles's Arizona Flora in 1960. ...