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.
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Showing 1 to 20 of 34 for “"Extenders"”.
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Comparative evaluation of different extenders of bull semen stored under different conditions
… evaluated the effectiveness of three different extenders to preserve bull semen stored under different conditions, as an alternative to frozen-thawed semen straws used for artificial insemination. Semen samples were collected from two Nguni bulls using an electro-ejaculator and transported to …
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Effect of bioxcell and triladyl extenders and removal of seminal plasma of equilibrated and cryopreserved goat semen
… of the study were to evaluate the effect of two extenders (Triladyl® and Bioxcell®) and the removal of seminal plasma on goat buck semen. Six ejaculates were collected from six indigenous bucks by means of electro-ejaculator method, and semen was pooled, and replicated 10 times. Raw semen were …
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A site-based study of durability indexes for concrete in marine conditions
… durable concrete can be produced, using three extenders and four site-curing methods over four seasons in the Port of East London (Eastern Cape). GGBS, FA and CSF were selected as extenders as it is well established that these extenders enhance the durability properties of concrete, relative to …
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Evaluation of Different Concentrations of Egg Yolk in Canine Frozen Semen Extender
… in the 0% extender during cooling and all extenders during freezing. The pH of the extenders before the addition of sperm was significantly different. Once sperm was added to the extenders, there was no longer a significant difference in pH. There was a positive correlation for both …
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Student perceptions of university faculty on the length of enrollment of university students
This study examined differences between Extenders (students who extended their continuous full-time enrollment beyond eight semesters) and Completers (students who completed their degree within eight semesters of continuous full-time enrollment). Student perceptions of the influences of faculty on …
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Cryopreservation of Domestic Cat Epididymal Spermatozoa
… was compared with the BioXCell® and Biolife® extenders (neither containing egg yolk, and predominantly used for cool liquid sperm storage) on their effectiveness to maintain feline epididymal spermatozoa at 4°C for 72 hours. Although no significant difference was noted, the TesT 2% egg yolk …
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New Segmented Block Copolymers Based on Hard and Soft Segments Using Selectively Reacting Bifunctional Coupling Agents
… pre-polymers and carboxylic terminated chain extenders using the above mentioned coupling agents. Several prepolymers were selected such as hydroxyl terminated liquid polybutadiene (PBD-OH), hydroxyl terminated liquid natural rubber (LNR) and amino terminated liquid …
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The influence of binder type and cracking on reinforcing steel corrosion in concrete
… of the current work is the study of how cement extenders impact on the corrosion characteristics of embedded steel in concrete. The investigation was limited to those materials commonly used in South Africa (slag, fly ash,and condensed silica fume) and performed under laboratory conditions at …
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Alkali-Aggregate reaction in Western Cape concrete
… and how to mitigate this expansion using cement extenders, which is the most common ASR mitigation measure. The long-term performance test, which allows testing of concrete, generally takes a minimum of 6-12 months to complete. As such, attention was turned towards the use of an accelerated …
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Effect of Avocado (Persea americana Mill) oil inclusion in the Tris-based extender on the quality of Boer goat semen stored at different temperatures
Semen extenders are chemical mediums used for preserving, and protecting spermatozoa against different shocks while processing, storing and transportation for use in artificial insemination (Raheja et al., 2018). There are challenges with the preservation of goat semen for Artificial Insemination …
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Closed loop supply chain waste reduction through predictive modelling and process analysis
… as set top boxes, broadband routers, and WiFi extenders to Fios customers via a variety of paths; for example: direct ship to customer (either for self-install or for later installation by a field technician), delivery via field technicians, or retail store pickup (primarily for self-install). …
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Texturization of soy protein via twin-screw extrusion
… range of applications as meat supplements or extenders. In this study, a Werner & Pfleiderer twin-screw extruder Model ZSK-30 was used to texturize defatted soy flour and soy protein concentrate. A cooled sheeting die was designed to enhance the texture integrity of the finished product. …
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Discourse‐pragmatic features of spoken French: analysis and pedagogical implications
… functions, including discourse markers, general extenders, presentational constructions and dislocated structures. I also address the question of how some of these typically spoken features develop in French youth language and the extent to which they may be considered innovative. 2) Discussion …
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Design and analysis of the front suspension geometry and steering system for a solar electric vehicle
… The steering knuckle and steering rack extenders, both made out of Aluminum 6061-T6, are designed based off of this geometry and are optimized for weight and machinability.
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Impact of an artificial insemination programme on reproductive efficacy and the cross-breeding if indigenous South African goats with Boer goats in Vhembe District
… focused on affordable and effective spermatozoa extenders and preservation methods. Experiment 1 aimed to evaluate the motility, velocity, morphology properties and viability of Boer goat sperm stored at 5°C for 168 hours. A total of 48 ejaculates were collected from four Boer goat bucks twice a …
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The experimental determination of rotor blade dynamic bending moments of a 10-kw wind turbine
… were obtained with strain gages mounted on blade extenders near the root of the instrumented blade. Rotor angular position data were obtained with a photocell arrangement. The one per revolution primary bending moment frequency was caused mostly by gravity-induced bending. Also present is the 6 Hz …
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Discourse-Pragmatic Features in English and Spanish Among Bilinguals
… and like in Spanish, quotatives, and general extenders. It was expected that these discourse-pragmatic features would be highly permeable in the speech of these bilinguals; however, contact with English did not radically influence the use of any of these discourse-pragmatic features in the …
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Investigation of polyethlyene passive samplers' efficacy in deducing sediment pore water concentrations of PCBs
… exchange fluids, flame retardants, and pesticide extenders, among other uses. About 450 million pounds of PCBs are estimated to have entered the environment since manufacture. Assessing the hazard posed by these PCBs is difficult due to PCBs' strong affinity for organic carbon and black carbon, …
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Long-term storage of liquid boar spermatozoa
… determine the optimum extender system for two extenders that will maintain the highest level of cellular integrity when stored at either 5C or 15C for a minimum of 72 hr; (b) evaluate the fertilizing capacity of stored spermatozoa using the optimum extender system; (c) critically analyze …
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Performance of hot mix asphalt using peat modified asphalt binder
… As a result modifiers such as fillers, extenders polymers (natural and synthetic), fibers among others, are introduced to be mixed with asphalt. This study was conducted to investigate the use of parit Nipah peat (PNpt) to be mixed with asphalt, both of unaged and aged conditions to …
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