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 10 of 10 for “"growth sites"”.
-
Biological Indicators of Forest Dieback
… of Sitka spruce. A survey was made of nineteen sites in the Afan 1 forest in South Wales. The results obtained indicates that there are two distinct types of site, namely good growth sites and poor growth sites. The poor growth sites were found to be at higher elevations.<br/><br/>Further …
-
A comparison of floristic diversity in old-growth versus mid-successional secondary-growth hardwood forests of the White Mountain National Forest, New Hampshire, United States
… will ever regain the species diversity of old-growth stands. While succession and response to disturbance of tree species has been extensively researched, little similar effort has focused on understory herbaceous communities. This study conducted large-scale, comprehensive botanical …
-
Low temperature epitaxial silicon growth using electron cyclotron resonance plasma deposition
… of a process for the low temperature (<600° C) growth of epitaxial silicon is an important technological issue. Conventional growth processes involve temperatures in excess of 1000° C. At these temperatures autodoping and impurity redistribution limit the feature size achievable in VLSI …
-
Havana ruins : post-embargo habitación regenerative prototypes
… as well as an opportunity for future tourism growth. Sites of decay become the vessels for prototypical exploration and thus create a new urban experience for both locals and future tourists. This prototypical approach is applied in 2 key areas, new accommodation typologies as well as …
-
In Situ Studies of Corrosion and Electrodeposition Using Atomic Force Microscopy
… inclusions varies. Pit initiation at inclusion sites was geometry dependent. Results confirmed that a high local pH, resulting from oxygen reduction on the iron-rich inclusion, initiated pitting corrosion. Attempts to study pitting at intermetallic inclusions in stainless steel 304 exposed to …
-
A novel low-temperature growth method of silicon structures and application in flash memory.
… However, current high temperature (>600 °C) growth techniques of the Polycrystalline silicon floating gate material are incompatible with 3-D flash memory; with vertically stacked memory layers, which require process temperatures to be ≤ 400 °C. There already exist some low temperature …
-
Direct 3D and in situ characterization of light metal hydrides for hydrogen storage
… increasing the number of nucleation and growth sites for the Mg/MgH2 phases, and may also act as hydrogen gateways to facilitate the transport of hydrogen to the interior material, helping explain the exceptional sorption behavior of this system. Structural differences in the oxide layers …
-
Development of novel nano-coating applied on metal stencils used in the manufacture of printed circuit boards and similar products
… coating with various reinforcing nanocomposites is performed. The physical parameters, duty cycle and current density of Ni-Co coating are varied in order to obtain the optimum properties. The duty cycle is varied from 20% to 100% with 20% increment and current density 3 A/dm2 to 9 A/dm2 …
-
Effects of Crystallite size and water partial pressure on the activity and selectivity of low temperature iron-based fischer-tropsch catalysts
… result leads to the conclusion that less chain growth sites and more methanation sites may be available on smaller crystallites leading to an increased methane selectivity on small crystallites. iv Chapter 0. Synopsis Other product selectivities such as olefin and oxygenate formation did not …