نتایج جستجو برای: leaf copper

تعداد نتایج: 167486  

Journal: :محیط شناسی 0
علیرضا پورخباز استادیار گروه محیط زیست، دانشکدۀ منابع طبیعی و محیط زیست دانشگاه بیرجند زهره شیروانی دانشجوی کارشناسی ارشد گروه محیط زیست، دانشکدۀ منابع طبیعی و محیط زیست دانشگاه بیرجند محمد قادر قادری استادیار گروه زراعت و اصلاح نباتات، دانشکدۀ کشاورزی دانشگاه بیرجند

introduction environment is a very great and complexity collection which has been created by a process and evolution of live existences and composer elements of ground area, and so affect the human activities and is affected from that. industrialization and modernization has let lots of heavy elements to entire into the atmosphere. elements of the atmosphere will locate on the surface of soil a...

Journal: :Plant signaling & behavior 2013
Brian M Waters Laura C Armbrust

Iron (Fe) and copper (Cu) homeostasis are tightly linked across biology. Understanding crosstalk between Fe and Cu nutrition could lead to strategies for improved growth on soils with low or excess metals, with implications for agriculture and phytoremediation. Here, we show that Cu and Fe nutrition interact to increase or decrease Fe and/or Cu accumulation in leaves and Fe uptake processes. Le...

Journal: :Chemical communications 2013
Jong-Chul Yoon Chang-Sung Yoon Jung-Soo Lee Ji-Hyun Jang

By simply heating commercial copper foil under an oxygen atmosphere and subsequently annealing CuO under a hydrogen atmosphere, the 3D Cu structures in the form of double hierarchical bumps are generated. The contact angle of a lotus leaf-inspired graphene grown on the reconstructed 3D Cu structures is 154.2°.

Journal: :journal of agricultural science and technology 2011
m. hejazi-mehrizi h. shariatmadari a. h. khoshgoftarmanesh f. dehghani

plant growth is often limited by low levels of soil micronutrients such as copper (cu), ‎especially in calcareous salt-affected soils of arid and semiarid regions. the aim of this ‎work was to investigate individual and combined effects of salinity and cu on growth, leaf ‎relative water content (lrwc), cell membrane permeability, lipid peroxidation, and total ‎phenolic content (tpc) of rosemary...

2012
Yu-Long FENG Zhi LI

Fruit yield decreases gradually after several years of cultivation in Amomum villosum, an important Chinese medicinal herb, which is generally attributed to plant senescence. However, the reasons for plant senescence are still not clear until now. In this study, we investigated the effects of micronutrient deficiencies on leaf senescence. We hypothesized that micronutrient deficiencies may caus...

2010
C. E. Williamson A. W. Dimock

2.5 pounds of lime to 100 gallons of water) or zinc oxide (2 pounds to 100 gallons) may be used. For severe cases in Florida, twice the indicated dosage of zinc sulfate and lime is recommended. Sprays should be applied soon after new growth appears. Iron deficiency occasionally occurs in California, primarily in trees on calcareous soils. It is characterized by yellowing of the major portion of...

Journal: :Revista de biologia tropical 2008
S R Joshi

The North Eastern region of India is undergoing industrial development at a faster rate than expected. Roads form the main system of transportation and communication owing to the hilly topography of the region. Automobiles discharge a number of gaseous and trace metal contaminants. Human activities like stone grinding, road construction and sand milling also increase the atmospheric dust and he...

2010
Naser Hamdi Fahmi A. Abu Al-Rub Munther Kandah Hussein Allaboun Julie Hamdi

In this study, the potential use of Palm Tree Leaf (PTL) particles for the removal of copper ions from aqueous solution was investigated. The effects of shaking time, Cu concentration and equilibrium pH on the biosorption of copper ions from aqueous solution were studied. Batch biosorption experiments proved the technical feasibility of using PTL particles to remove copper ions from aqueous sol...

Journal: :Journal of environmental biology 2007
Fikriye Kirbag Zengin Sevda Kirbag

The effect of copperchloride (CuCl2) on the level of chlorophyll (a+b), proline, protein and abscisic acid in sunflower (Helianthus annuus L.) seedlings were investigated Control and copper treated (0.4, 0.5 and 0.6 mM) seedlings were grown for ten days in Hoagland solution. Abscisic acid content was determined in root, shoot and leaf tissues of seedlings by HPLC. Copper stress caused significa...

2014
Monika Singh Shilpi Saxena Ajay Pratap Singh

Effluent from electroplating industry involved in copper plating and other metal polishing work contain various heavy metal(Cu, Fe, Ni, Pb, Mn and Zn) which have severe adverse effect on health . The present work analyzes heavy metal present in plating shops for a period of one year. Highest copper metal concentration (27.60mg/L) was observed during post monsoon at site AB-5, least copper metal...

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