scholarly journals Insecticidal Trials Against Vanda Thrips on Orchids, Hawaii, 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 381-381
Author(s):  
T. Y. Hata ◽  
A. H. Hara ◽  
B.K.S. Hu
Keyword(s):  
Acetic Acid ◽  
Treatment Efficacy ◽  
Analysis Data ◽  
Polyethylene Film ◽  
Light Bulb ◽  
Incandescent Light ◽  
Newport News ◽  
The University ◽  
Experimental Plots ◽  
Basalt Rock

Abstract Insecticides were evaluated for efficacy from 8 Dec through 15 Dec 94 at the University of Hawaii Waiakea Experiment Station in Hilo, Hawaii. Plants (approximately 6.5 ft in height) growing in basalt rock under 6 mil. clear FVG 3HLFI polyethylene film covering were used in this study. Experimental plots were arranged in a RCB with 3 blocks, 30 plants per block. A spreader-sticker (Ad-here, J. R. Simplot, Lanthrop, CA) was added to all treatments, including the control, at a rate of 5 ft. oz. per 100 gals. The control was sprayed with water. Insecticides were applied once at approximately 200 gpa using a backpack sprayer (Solo, Newport News, VA) equipped with an 8004 Teejet nozzle at 40 psi. Treatment efficacy was evaluated by randomly harvesting 30 blossoms from each block. Thrips were extracted from the blossoms with Berlese funnels heated with a 60 watt incandescent light bulb and collected in an 8:2:1:1 solution of ethanol, distilled H2O, acetic acid and glycerin. The number of nymphs and adults was pooled for analysis. Data were transformed to log10(x + 1) and analyzed by ANOVA.

scholarly journals Efficacy of Insecticides Against Thrips on Dendrobium, Hi, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 295-295 ◽  
Author(s):  
T. Y. Hata ◽  
A. H. Hara ◽  
Ben K. S. Hu
Keyword(s):  
Acetic Acid ◽  
Water Treatment ◽  
Treatment Efficacy ◽  
Cultural Practices ◽  
Basaltic Rock ◽  
Light Bulb ◽  
Incandescent Light ◽  
Newport News ◽  
Four Blocks ◽  
Experimental Plots

Abstract Tests were conducted from 14 Jul through 8 Sep 1994 on 8 year old orchid plants at a commercial dendrobium farm in Kailua-Kona. Plants were growing in 1.3 cm crushed basaltic rock under 30% polypropylene shade using standard cultural practices. Experimental plots measured 40 ft2 with 58 plants per plot arranged in a RCB with four blocks. Four weekly applications of insecticides were applied beginning 14 Jul and ending 4 Aug. A spreader-sticker (Ad-here, J. R. Simplot, Lanthrop, CA) was added to all foliar treatments, including the control, at a rate of 0.5 ml per liter solution. Insecticides were applied at 1,345 liters/ha using a backpack sprayer (Solo Inc., Newport News, VA) equipped with an 8004 Teejet nozzle (Spraying systems Co. Wheaton, IL) at 276 KPa. The control was sprayed with water. Treatment efficacy was evaluated by randomly harvesting 5 inflorescences weekly from each block. Blossoms were removed from the inflorescences, counted, and placed in Berlese funnels heated with a 60 watt incandescent light bulb. Thrips were collected in an 8:2:1:1 solution of ethanol, distilled H20, acetic acid and glycerin, and the number of nymphs and adults counted. Because the number of blossoms per inflorescences varied, thrips counts were adjusted to the number of thrips per blossom by dividing the total number of thrips recovered by the total number of blossoms. Data were transformed to log,0(x + 1) and analyzed by ANOVA.

scholarly journals Efficacy of Hot Air as a Postharvest Disinfestation Treatment Against Thrips on Cut Chrysanthe-Mums, Hawaii, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 399-399
Author(s):  
A. H. Hara ◽  
B.K.S. Hu ◽  
T. Y. Hata
Keyword(s):  
Agricultural Research ◽  
Tap Water ◽  
Analysis Data ◽  
Research Station ◽  
Cross Contamination ◽  
Light Bulb ◽  
Hot Air ◽  
Efficacy Trials ◽  
Air Chamber ◽  
The University

Abstract Efficacy trials were conducted at the University of Hawaii at Manoa, Waiakea Agricultural Research Station in Hilo, HI. Flowers were harvested on 2 Apr from a commercial planting in Mt. View, HI, and transported to the Experiment Station for subsequent tests. Flower stems were divided into 18 groups arranged in 6 treatments with 3 replicates of 10 stems each and held in 19 liter buckets containing 11 liters of tap water. Flowers were treated on 3 Apr (rep 1) and 8 Apr (reps 2 and 3). Treatment consisted of placing the bucket of flowers in the hot air chamber at 44.4 °C, 60% r.h., 0.23 m3 s-1 fan circulation at 26 °C (measured) for 1-5 h at 1 h interval. The check was not treated. Immediately after treatment, flowers were enclosed in bags made from spunbonded polyester (Reemay 2006 UV [20 g/m2], DuPont Wilmington, DE) to prevent cross contamination. Twenty-four hours after treatment, thrips were extracted from 10 flowers (1 flower per stem) using Berlese funnels heated with a 60 watt incandescent light bulb. Thrips were collected in a 8:2:1:1 solution of ethanol, distilled H2O, acetic acid and glycerin. The number of adults and nymphs were counted and pooled for analysis. Data were subjected to ANOVA and means separated by Waller Duncan k-ratio t test k = 100.

scholarly journals Residual Activity of Insecticides on Dendrobium for Control of Orchid Weevils, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 369-369
Author(s):  
A. H. Hara ◽  
T. Y. Hata
Keyword(s):  
Residual Activity ◽  
Exposure Period ◽  
Compressed Air ◽  
Polyethylene Film ◽  
Experiment Station ◽  
Arundina Graminifolia ◽  
The University ◽  
Basalt Rock

Abstract Bioassay tests were conducted from 10 Mar through 8 Apr (study 1) and 31 Aug through 22 Sep (study 2) at the University of Hawaii at Manoa, Waiakea Experiment Station in Hilo, HI. Established plants ‘Uniwai Supreme’ (study 1), and ‘Uniwai Pearl’ (study 2) growing in 0.5 inch crushed basalt rock under a Conley cold frame greenhouse (6 mil. clear FVG 3HLFI polyethylene film covering) were used in this study. Insecticides were applied once at 1,375 liters/ha using a compressed air sprayer with a 8004 Teejet nozzle at 40 psi. Sixteen leaves per treatment, 4 leaves per replicate, were removed weekly from the plant and placed into 12.0 × 10.5 cm unwaxed paper containers. Ten orchid weevils, field collected on bamboo orchids, Arundina graminifolia (D. Don) Hochr., were added to each container and covered with organdy. In study 1, leaf residues were assayed 7, 14, and 21 d after treatment. Weevil mortality and the number of feeding marks (injury) were assessed using a 5d exposure period. In study 2, residues were bioassayed 7 and 14 d after treatment and mortality and injury were assessed after a 2 d exposure period.

scholarly journals Field Insecticidal Trial Against Certain Pests of Red Ginger, Hawaii, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 297-297
Author(s):  
T. Y. Hata ◽  
A. H. Hara ◽  
B. K. S. Hu
Keyword(s):  
Experimental Design ◽  
Treatment Efficacy ◽  
Insect Pests ◽  
Leaf Sheath ◽  
Square Root ◽  
Newport News ◽  
Experiment Station ◽  
Efficacy Trials ◽  
Red Ginger ◽  
The University

Abstract Efficacy trials were conducted from 20 May through 26 Sep in an existing, 4 year old ginger planting at the University of Hawaii at Manoa, Waiakea Experiment Station (Hilo), HI. Treatments consisted of 4 replicates with 5 plants per replicate arranged in a RCB experimental design. Selected insecticides were applied at the following rates: Talstar T&O; 0.1 lb AI/100 gal, Pageant DF; 0.5 lb AI/100 gal, Marathon 1G; 0.4 lb Al/acre, Mavrik Aquaflow; 0.08 lb AI/100 gal combined with M-Pede 1855 ml AI/100 gal by volume. Foliar insecticides were applied biweekly beginning 14 Jun through 25 Jul for a total of four applications using a solo back pack sprayer (Solo Inc., Newport News, VA) equipped with an 8004 Teejet nozzle at 276 KPa (702 liters/ha). A spreader sticker (Adhere, J. R. Simplot, Lanthrop, CA) was added to all foliar treatments including the control at a rate of 0.39 ml/liter solution. Marathon 1G was applied once, around and within the ginger stalks, and watered immediately after treatment. Treatment efficacy was determined by dissecting the flower bracts and terminal leaf sheath and observing for various insect pests. Flowers were considered infested if a single live (moving) insect was found. The three species of mealybugs and two ant species were each pooled for analysis. The percentages of infested flowers were transformed to arcsine square root and subjected to ANOVA. Back transformed means are presented.

scholarly journals A Teaching Experience through the use of Tasks: Limits and possibilities for learning Mathematics in a university context

2020 ◽  
Vol 22 (2) ◽  
Author(s):  
Alessandro Ribeiro ◽  
Juliana Paulin
Keyword(s):  
Teaching And Learning ◽  
Teaching Practice ◽  
Teaching Experience ◽  
Analysis Data ◽  
University Teaching ◽  
Mathematical Tasks ◽  
Integral Calculus ◽  
Mathematical Concepts ◽  
Fundamental Theorem Of Calculus ◽  
The University

Context: Rethinking mathematics teaching practices in a university context is an emerging research theme. Objectives: In this article, we aim to discuss the limits and possibilities of using mathematical tasks in the teaching and learning processes of the concepts of Derivative, Integral and the Fundamental Theorem of Calculus. Design: The study is based on a qualitative-interpretative perspective of research, with methodological procedures inspired by a Design-Based Research. Environment and participants: The research was developed with students attending a Functions of a Variable class in a public university in the state of São Paulo. Data collection and analysis: Data were collected through mathematical tasks on Differential and Integral Calculus solved by students. The protocols produced were analysed, pointing out the main aspects identified, which led us to organize categories of analysis and dimensions (i) knowledges mobilized and developed by students in relation to mathematical concepts; (ii) main errors and difficulties presented by students in the development of tasks; (iii) limits and possibilities of the practice of exploratory teaching in the university context. Results: The results reveal aspects that characterize a process of resignifying the mathematical concepts discussed with the students and a deepening of their knowledge about the concepts of the DIC. Conclusions: As future notes, we suggest rethinking university teaching practice, since the study indicated possibilities and potentialities of the use of exploratory tasks in the teaching of Differential and Integral Calculus.

Advances in Alkene and Alkyne Metathesis

2011 ◽  
Author(s):  
Douglass Taber
Keyword(s):  
Acetic Acid ◽  
Diels Alder ◽  
Alkyne Metathesis ◽  
Santa Barbara ◽  
Ring Closing Metathesis ◽  
Enol Ethers ◽  
Cross Metathesis ◽  
Simple Filtration ◽  
The University ◽  
Academy Of Sciences

As alkene metathesis is extended to more and more challenging substrates, improved catalysts and solvents are required. Robert H. Grubbs of Caltech developed (Organic Lett. 2008, 10, 441) the diisopropyl complex 1, that efficiently formed the trisubstituted alkene 6 by cross metathesis of 4 with 5. Hervé Clavier and Stephen P. Nolan of ICIQ, Tarragona, and Marc Mauduit of ENSC Rennes found (J. Org. Chem. 2008, 73, 4225) that after cyclization of 7 with the complex 2b, simple filtration of the reaction mixture through silica gel delivered the product 8 containing only 5.5 ppm Ru. The merit of CH2Cl2 as a solvent for alkene metathesis is that the catalysts (e.g. 1 - 3) are very stable. Claire S. Adjiman of Imperial College and Paul C. Taylor of the University of Warwick established (Chem. Commun. 2008, 2806) that although the second generation Grubbs catalyst 3 is not as stable in acetic acid, for the cyclization of 9 to 10 it is a much more active catalyst in acetic acid than in CH2Cl2 . Bruce H. Lipshutz of the University of California, Santa Barbara observed (Adv. Synth. Cat . 2008, 350, 953) that even water could serve as the reaction solvent for the challenging cyclization of 11 to 12, so long as the solubility- enhancing amphiphile PTS was included. Ernesto G. Mata of the Universidad Nacional de Rosario explored (J. Org. Chem. 2008, 73, 2024) resin isolation to optimize cross-metathesis, finding that the acrylate 13 worked particularly well. Karol Grela of the Polish Academy of Sciences, Warsaw optimized (Chem. Commun. 2008, 2468) cross-metathesis with a halogenated alkene 16. Jean-Marc Campagne of ENSC Montpellier extended (J. Am. Chem. Soc. 2008, 130, 1562) ring-closing metathesis to enynes such as 19. The product diene 20 was a reactive Diels-Alder dienophile. István E. Markó of the Université Catholique de Louvain applied (Tetrahedron Lett. 2008, 49, 1523) the known (OHL 20070122) ring-closing metathesis of enol ethers to the cyclization of the Tebbe product from 23. The ether 24 was oxidized directly to the lactone 25.

“Impossible to stop just now. Why, if I could only prove one simple little lemma”

Propelled ◽  
2020 ◽  
pp. 94-112
Author(s):  
Andreas Elpidorou
Keyword(s):  
Personal Meaning ◽  
Light Bulb ◽  
Incandescent Light ◽  
Fermat's Last Theorem ◽  
Fermat’S Last Theorem

By presenting real stories of frustrations, failures, and successes—Andrew Wiles’ proof of Fermat’s Last Theorem, Keith Jarrett’s unforgettable 1975 Köln performance, and Thomas Edison’s struggles with the incandescent light bulb, among others—the chapter further investigates the value and importance of frustration. Whereas Chapter 6 was concerned with articulating the motivational value of frustration, this chapter demonstrates the capacity of frustration to structure our lives and to endow them with significance and personal meaning. Specifically, the chapter describes how what we experience as frustrating, difficult, and effortful can often become valuable precisely because it is frustrating, difficult, and effortful to us. The chapter thus makes clear that the experience of frustration can lead to the generation of value and argues that a life devoid of frustrations runs the risk of becoming meaningless.

Data Management at the University of Iowa: A University Libraries Report on Campus Research Data Needs

2020 ◽  
Author(s):  
Shawn Averkamp ◽  
Xiaomei Gu ◽  
Ben Rogers
Keyword(s):  
Data Collection ◽  
Data Management ◽  
Data Storage ◽  
Analysis Data ◽  
Data Publishing ◽  
Second Phase ◽  
Sensitive Data ◽  
University Of Iowa ◽  
Challenges And Opportunities ◽  
The University

<p>This data management report was commissioned by the University of Iowa Libraries with the intention of performing a survey of the campus landscape and identifying gaps in data management services. The first stage of data collection consisted of a survey conducted during summer 2012 to which 784 responses were received. The second phase of data collection consisted of approximately 40 in-depth interviews with individuals from the campus and were completed during summer 2013. Findings are presented as challenges and opportunities within five broad areas of data management: data management planning, data storage, data organization and analysis, data publishing and dissemination and sensitive data and compliance, with additional findings reported in the areas of research culture and funding models.</p>

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