New L-serine derivative ligands were prepared and tested as co-catalyst in the DielsAlder reactions between cyclopentadiene (CPD) and methyl acrylate in the presence of several Lewis acids. The catalytic potential of the in situ formed complexes was evaluated based on the reaction yield. Bidentate serine ligands showed good ability to coordinate medium strength Lewis acids, thus boosting their ...

Ethylene sensitivity of grafted and nongrafted tomato ( Solanum lycopersicum ) seedlings with three to four true leaves was examined. The concentration exogenous ethylene that produced symptoms between 1 10 µL?L –1 regardless grafting. Symptoms exposure included leaf epinasty, decreased maximal photochemical quantum yield photosystem II F v / m ), increased plant height (nongrafted only). Graft...

Polypropylene (PP) has poor adhesion to metals and other surfaces for its chemical structure. Hence, chemical modification of PP is necessary for metal surface coating application. In this research, grafting of maleic anhydride (MA) onto co(propylene-b-ethylene) in the presence of a dicumyl peroxide (DCP) was accomplished in a single screw extruder. Characteristics of the modified polymer were ...

Much effort has been devoted to the synthesis of gold nanoparticles with different shapes, including the zero-dimensional nanospheres, one dimensional nanorods, and two-dimensional nanoplates. Compared to zero or one dimensional nanostructures, the synthesis of two-dimensional nanostructures in high yield has always been more involved, often requiring complex and timeconsuming steps such as mor...

water and nutrient absorption by plants is one of the most conspicuous factors which seriously affect plant productivity. improving physical properties of soilless media and their water retaining capacity can improve plant's nutrient absorption, growth and subsequent yield. in this study, we tried to improve plant nutrient absorption through incorporation of hydrogel into growth media and ...

rootstock and cultivar selection is the most critical decision at the time of an apple orchard establishment. tree size, yield and fruit quality are affected by roostock and cultivar. non-sufficient study of rootstocks and cultivars effects on mentioned traits will lead to incorrect result or failure in orchard managing. in this study the effects of three vegetative rootstocks (mm106, mm111 and...

abstract background and objectives: patients are oriented towards spirituality after coronary artery bypass grafting (cabg). the aim of this study was to explore the patients’ spiritual experiences after cabg. methods: this qualitative study was conducted using hermeneutic phenomenology. 11 participants (7 males and 4 females) were interviewed in tehran heart center hospital in 2013 using maxim...

The standard two-step methods for grafting horticultural crops involve cultivating the rootstock a period of time and then connecting scion. Medicinal Cannabis differs from most annual because it is usually clonally propagated cuttings. We developed methodology specifically medicinal Cannabis, involving single step, in which freshly cut scion grafted to donor stem that will become rootstock. Th...

ABSTRACT Supplemental lighting is becoming a common practice for horticultural greenhouse industries, especially at high-latitude countries. However, no scientific reports were found on this topic in tropical climate This study investigates the effects of LED-interlighting and grafting photosynthetic response yield quality mini cucumber (hybrid Larino). The experiment took place from April to A...