Effect of Date of Harvest and Floral Preservatives on Vase Life of Cut Flowers in Tuberose (Polyanthes tuberosa L.) cv. Double

Studies conducted to find out the effect of date of harvesting and floral preservatives on vase life and quality of tuberose cv. Double revealed that among treatments, harvesting on 1st October (D8) was better for longer vase life, whereas, 15th August (D5) for minimum loss of water, maximum fresh weight of the spike and percentage of opened florets. Similarly, harvesting on 15th September (D7) was found better for longest floret longevity as well as loss uptake ratio. In case of floral preservatives, the treatment 500 ppm aluminum sulphate + 4% sucrose (C6) was found better for longer vase life, maximum uptake of water, lowest loss-uptake ratio and maximum fresh weight of spike, whereas, 400 ppm 8-HQS + 4% sucrose (C8) for maximum floret longevity and floret circumference as well as maximum percentage of opened and lowest percentage of neck bent florets. The treatment, 50 ppm silver nitrate + 4% sucrose (C3) exhibited lowest loss of water. In case of interaction effect, 1st October with 500 ppm aluminum sulphate + 4% sucrose (D8C6) was found superior for maximum vase life of spike, highest uptake of water and fresh weight of spike

Effect of Stem Length and Stage of Harvest on Vase-Life of Cut Flowers in Tuberose (Polianthes tuberosa L.) Cv. Double

A study was carried out to explore the effect of length of stem and stage of harvest on vase life and display quality of tuberose. As regards stem length, 90 cm stem length (L4) had longest vase life, maximum uptake of water, minimum loss-uptake ratio, maximum fresh weight and percentage of opened florets, and, lowest percentage of abscised floret; whereas, 60 cm stem length (L2) enhanced longevity of individual florets. In the case of stage of harvest, significantly high vase life, least loss of water, minimum loss-uptake ratio and lowest physiological loss of weight were recorded in two-florets open stage (S3). Maximum percentage of opened florets and lowest percentage of abscised florets were observed in three-florets open stage (S4), whereas, maximum uptake of water and fresh weight of spike were seen in one-floret open stage (S2). Interaction effect of stem length and harvest stage was also found to be significant showing that 75 cm of stem length with one-floret open stage (L3S2) was superior for maximum vase life of spike as well as lowest physiological loss of weight

Effect of Drying Conditions and Embedding Materials on Post-Harvest Quantitative Parameters in China Aster (Callistephus chinensis) Flowers

The study was undertaken to optimize conditions for dry flower production in China aster flowers. The experiment was conducted with eight treatment combinations consisting of two drying conditions viz., room drying (C1) and sun drying (C2) and four media viz. Sand (M1), Sand:Borax (1:1) (M2), Borax (M3) and Silicagel (M4) with factorial concept in completely randomized design. Per cent weight loss and moisture loss were signiflcantly higher under sun drying and silicagel during the entire process of drying from first day to fourth day. Moisture content was higher under room drying and borax from first day to fourth day

Performance of Banana Cultivars in Gujarat

Field experiments were conducted for three years to assess the performance and select the cultivar ideally suited to Saurashtra region in Gujarat. The cultivars evaluated were Basrai, Harichal, Robusta, Gros Michel, Gandevi Selection and Lacatan. Of these, Gandevi Selection proved superior, with regard to growth parameters, yield characters and its attributes. It also yielded the highest benefit cost ratio

The relative involvement of anterior cingulate and prefrontal cortex in attentional control depends on nature of conflict.

Abstract While numerous studies have implicated both anterior cingulate and prefrontal cortex in attentional control, the nature of their involvement remains a source of debate. Here we determine the extent to which their relative involvement in attentional control depends upon the levels of processing at which the conflict occurs (e.g., response, non-response). Using a combination of blocked and rapid presentation event-related functional magnetic resonance imaging techniques, we compared neural activity during incongruent Stroop trial types that produce conflict at different levels of processing. Our data suggest that the involvement of anterior cingulate and right prefrontal cortex in attentional control is primarily limited to situations of response conflict, while the involvement of left prefrontal cortex extends to the occurrence of conflict at non-response levels

Singularities of nn-fold integrals of the Ising class and the theory of elliptic curves

We introduce some multiple integrals that are expected to have the same singularities as the singularities of the $n$-particle contributions $\chi^{(n)}$ to the susceptibility of the square lattice Ising model. We find the Fuchsian linear differential equation satisfied by these multiple integrals for $n=1, 2, 3, 4$ and only modulo some primes for $n=5$ and $6$, thus providing a large set of (possible) new singularities of the $\chi^{(n)}$. We discuss the singularity structure for these multiple integrals by solving the Landau conditions. We find that the singularities of the associated ODEs identify (up to $n= 6$) with the leading pinch Landau singularities. The second remarkable obtained feature is that the singularities of the ODEs associated with the multiple integrals reduce to the singularities of the ODEs associated with a {\em finite number of one dimensional integrals}. Among the singularities found, we underline the fact that the quadratic polynomial condition $1+3 w +4 w^2 = 0$, that occurs in the linear differential equation of $\chi^{(3)}$, actually corresponds to a remarkable property of selected elliptic curves, namely the occurrence of complex multiplication. The interpretation of complex multiplication for elliptic curves as complex fixed points of the selected generators of the renormalization group, namely isogenies of elliptic curves, is sketched. Most of the other singularities occurring in our multiple integrals are not related to complex multiplication situations, suggesting an interpretation in terms of (motivic) mathematical structures beyond the theory of elliptic curves.Comment: 39 pages, 7 figure

Electromagnetic vertex function of the pion at T > 0

The matrix element of the electromagnetic current between pion states is calculated in quenched lattice QCD at a temperature of $T = 0.93 T_c$. The nonperturbatively improved Sheikholeslami-Wohlert action is used together with the corresponding ${\cal O}(a)$ improved vector current. The electromagnetic vertex function is extracted for pion masses down to $360 {\rm MeV}$ and momentum transfers $Q^2 \le 2.7 {\rm GeV}^2$.Comment: 17 pages, 8 figure

Testing in the incremental design and development of complex products

Testing is an important aspect of design and development which consumes significant time and resource in many companies. However, it has received less research attention than many other activities in product development, and especially, very few publications report empirical studies of engineering testing. Such studies are needed to establish the importance of testing and inform the development of pragmatic support methods. This paper combines insights from literature study with findings from three empirical studies of testing. The case studies concern incrementally developed complex products in the automotive domain. A description of testing practice as observed in these studies is provided, confirming that testing activities are used for multiple purposes depending on the context, and are intertwined with design from start to finish of the development process, not done after it as many models depict. Descriptive process models are developed to indicate some of the key insights, and opportunities for further research are suggested

Re-Generating Research Partnerships in Early Childhood Education: A Non-Idealized Vision

This chapter provides a challenge to positivist notions of partnership in early childhood education, and instead proposes a re-generative posthumanist perspective, based on relationality of partnerships. Specifically, the chapter addresses the troubles and struggles inherited in research partnerships through a non-idealized vision of research partnerships. It experiments with the notions of regenerating ‘change’ and regenerating ‘relationality’. It also addresses the multi-layered aspects of knowledge-in-the-making; non-innocent relations; difficulties of thinking change in research; and the potentialities of conflict and dissension. However, no certainties and closures about research partnerships are provided

The Strongly Coupled 't Hooft Model on the Lattice

We study the strong coupling limit of the one-flavor and two-flavor massless 't Hooft models, $large-{\cal N}_c$-color $QCD_2$, on a lattice. We use staggered fermions and the Hamiltonian approach to lattice gauge theories. We show that the one-flavor model is effectively described by the antiferromagnetic Ising model, whose ground state is the vacuum of the gauge model in the infinite coupling limit; expanding around this ground state we derive a strong coupling expansion and compute the lowest lying hadron masses as well as the chiral condensate of the gauge theory. Our lattice computation well reproduces the results of the continuum theory. Baryons are massless in the infinite coupling limit; they acquire a mass already at the second order in the strong coupling expansion in agreement with the Witten argument that baryons are the $QCD$ solitons. The spectrum and chiral condensate of the two-flavor model are effectively described in terms of observables of the quantum antiferromagnetic Heisenberg model. We explicitly write the lowest lying hadron masses and chiral condensate in terms of spin-spin correlators on the ground state of the spin model. We show that the planar limit (${\cal N}_c\longrightarrow \infty$) of the gauge model corresponds to the large spin limit ($S\longrightarrow \infty$) of the antiferromagnet and compute the hadron mass spectrum in this limit finding that, also in this model, the pattern of chiral symmetry breaking of the continuum theory is well reproduced on the lattice.Comment: LaTex, 25 pages, no figure