Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"perlite"”.
-
Vacuum insulation using perlite powder sealed in plastic and glass
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
-
Design, fabrication and testing of low-cost vacuum insulated packaging
A design for the use of evacuated Perlite insulation in the shipment of perishable goods was analyzed, implemented, and evaluated, with the goal of replacing or reducing the amount of phase-change materials needed to ship such goods by standard package carriers. The package design makes use of …
-
The casing layer in the culture of Agaricus bisporus, the cultivated mushroom
… medium based on the light glass-like mineral, perlite, was developed. The best formula obtained was -.1 part perlite: 1 part montmorillonite clay (by weight): 3 parts 0.01% glucose solution. Perlite/montmorillonite casing could be improved by adding compost colonised by mycelium of A.bisporus, …
-
Evaluation of eastern redcedar as a substrate for container-grown plant production
… major substrate components; pine bark (PB), perlite, or peat moss. Four studies evaluated ornamental crop growth: two focused on comparing nursery crop production in PB and JVC, one focused on greenhouse production in peat moss, and the last on plant propagation in perlite. The first …
-
Συμβολή στη μελέτη διόγκωσης ηφαιστιτών
THE EXPANSION OF PERLITE IS FOR THE GREEK INDUSTRY OF ROCKS AND MINERALS OF GREAT IMPORTANCE. THE REALIZATION OF THE PRESENT THESIS WITH REGARDS TO THE DEFINITION OF THE VARIOUS PARAMETERS AND THE WAY THAT THEY INFLUENCE THE PERLITE'S EXPANSION OFFERS THE POSSIBILITY OF EXTRACTING VALUABLE, FOR THE …
-
An Experimental Investigation into NOx Control of a Gas Turbine Combustor and Augmentor Tube Incorporating a Catalytic Reduction System
… tube, 21 feet in length and containing a perlite catalyst, were used as a gas generator and catalytic reduction system. Four data runs were made. Three runs were completed without the catalyst installed. Temperature and velocity profile measurements were obtained in order to calculate …
-
Challenges in the Greenhouse Production of Rosmarinus officinalis L.
… media [Fafard 52 (24% peat, 60% bark, 8% perlite, 8% vermiculite); Fafard 3B (45% peat, 25% bark, 15% perlite, 15% vermiculite); Scott's Sierra Perennial Mix (25% peat, 65% bark, 10% perlite); Scott's Metro Mix 700 with Coir (25% coir, 50% bark, 10% perlite, 15% vermiculite); and a nursery …
-
Horticultural utilization of waste products from sustainable forestry practices in the Pinelands National Reserve
… were un-amended or amended with either sand or perlite producing a total of six different media. After mixing, the experimental propagation media were transferred to 38 round cell propagation trays. Hardwood cuttings of American Cranberry (Vaccinium macrocarpon cv. Stevens), 7.6 cm (3 inches) in …
-
Soilless media for seed germination and growth of tomato transplants, and for the rooting of certain herbaceous stem cuttings
… combinations of sand, peat moss, Weblite, and perlite. Their root system and foliage condition were evaluated 18 days later. Weblite was significantly better in rooting Chrysanthemums than the six other media.Dianthus caroyphyllus cv Caribe stem cuttings were rooted in nine media. These media …
-
Verticordia micropropagation through direct ex vitro rooting
… and aerated substrate (a mixture of peat and perlite 1:3) in crack pots. These were initially placed into a greenhouse (with controlled temperature & light conditions) in order to maintain high humidity. Over time humidity was reduced and after 112 days the plantlets were transferred to larger …
-
Micropropagation of Paraserianthes falcataria
… investigated for soil acclimation, with peat: perlite : coarse sand being the best soil conditions. In conclusion, Paraserianthes falcataria can be propagated in vitro and is a promising species for revegetation and agroforestry practices.
-
In vitro propagation of Betula uber (Ashe) Fernald
… using a conventional potting mix of sand-peat-perlite (1:2:1 v/v/v) was superior to all in vitro rooting treatments. Plantlets were acclimated successfully to greenhouse conditions. Genotype differences with regard to both rooting and shooting abilities were observed.
-
Modular Plancha Cookstove Design for Capacity Building in Santa Catarina, Guatemala
… fiber-reinforced concrete rocket stove with perlite insulation and a plancha (flat stovetop), similar to but smaller than traditional Guatemalan stoves. The size and geometry was designed for modularity and portability, allowing multiple stoves to be used in various configurations, and to …
-
Controlled and protected environment production of blueberries in the Midwest United States
… success than ‘Brunswick’. Three-to-one peat: perlite was the best substrate with up to 96% rooting success. Cococoir was similarly effective at 88% rooting success. Both shredded rockwool and rockwool cubes resulted in relatively poor rooting of about 50%. Rooting hormone had no effect on …
-
The Safe Removal of Frozen Air from the Annulus of a Liquid Hydrogen Storage Tank
… Eventually, air may leak into the evacuated and perlite filled annular region of these tanks. Although the vacuum level is monitored in this region, the extremely cold temperature causes all but the helium and neon constituents of air to freeze. A small, often unnoticeable pressure rise is the …
-
Stock plant nutrition and stem cutting water relations during propagation of four woody nursery crops
… crenata ‘Helleri’, were propagated in 1 peat : 1 perlite (v/v) at 125 %, 250 %, 375 %, 500 %, and 625 % moisture. Stem cutting survival and rooting, midday xylem water potential, and basal water uptake all generally increased with increasing medium moisture level. Incidence of cutting basal rot …
-
Study on the performance of different slope inclination of vegetated roof
… layer, 80 mm thickness with the same mixture of perlite, vermiculite and peat moss and the plants used for this study are Portulaca Grandiflora. Based on the first findings, vegetated with 30° roof angle collected 4.20 mm while 10° roof angled collected 0.48 mm of rainfall. There is approximately …
-
Development of Pythium oligandrum drechsler for biological control of fungal soil-borne diseases.
… naturally infested soil. Alginate pellets and a perlite preparation survived well in laboratory storage at 5-25° for at least 24 wk. Seeds of cress and sugar beet were coated with oospores using commercial seed-pelleting and film-coating procedures. Both types of seed treatment reduced …
-
THE CHARACTERIZATION AND UTILIZATION OF BARK AS A FLORICULTURE GROWING MEDIUM
… bark blends in combination with vermiculite and perlite were evaluated. Treatments consisting of various formulations and rates of the slow-release fertilizers Magamp and Osmocote were applied in three separate experiments. In a fourth experiment, four different rates of NH(,4)NO(,3) were …
-
The influence of plant age and nitrogen rate on nutrient removal from the container medium solution
… in 500 cc plastic pots containing 1 peat: 1 perlite (v/v) medium and fertilized daily with 200 ppm N as ammonium nitrate. Thirty, 35, 40, 45 and 50 day old plants were subjected to either 20, SO, 80 or 110 ppm N. Medium solutions were tested at hour 0 and 6, and analyzed for N, P and K. …
Page 1 of 2