cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2012.511
title: Diversity of corticolous lichens on some host plants in limestone forest, Amphoe Nong Hin, Loei province

description: The effect of habitat characteristics and properties on corticolous lichen diveristy in three host plants including Cycas pectinata Griff., Dracaena cochinchinensis (Lour.) S. C. Chen, and Dracaena jayniana Wilkin & Suksathan was studied in limestone forest at Amphoe Nong Hin, Loei Province. The hypothesis is that habitat characteristic and properties have the effects on corticolous lichen diversity in the three host plants. This study found a total of 14 families, 32 genera and 57 species of lichens. There are 14 families, 23 genera and 40 species of lichens on C. pectinata, 12 families, 22 genera and 39 species on D. cochinchinensis and 9 families, 17 genera and 35 species on D. jayniana. The species richness (Shannon-Wiener Index) of lichens on C. pectinata, D. cochinchinensis and D. jayniana are 8.70 ± 0.06, 10.71 ± 0.06 and 8.91 ± 0.08 respectively. This study found 4 new lichen species of records including Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb., Julella vitrispora (Cooke & Harkness) M. E. Barr., Pyrenula interducta (Nyl.) Zahlbr. and Pyrenula leucotrypa (Nyl.) Upreti. Moreover, bark water-holding capacity, bark crevice depth and bark pH were not correlated with the number of species per plant.
DOI: 10.15468/6evldg
title: Guaricicana, a new genus of Hyalojassini (Hemiptera: Cicadellidae: Iassinae) from the Brazilian Atlantic Forest

description: This dataset contains the digitized treatments in Plazi based on the original journal article Domahovski, Alexandre C., Cavichioli, Rodney R. (2019): Guaricicana, a new genus of Hyalojassini (Hemiptera: Cicadellidae: Iassinae) from the Brazilian Atlantic Forest. European Journal of Taxonomy 547: 1-12, DOI: https://doi.org/10.5852/ejt.2019.547
DOI: 10.7925/drs1.ucdlib_255944
title: Boatstrand Harbour point cloud

description: LAS (LASer file format) point cloud of Boatstrand Harbour created using onsite LiDAR laser scans.
description: Keywords: Harbours, Ireland, Maritime, Engineering, Heritage at Risk, LiDAR, Transportable Data, Boat Strand, Dunbrattin, Dunabrattin, 19th century, 21st century, Thomas Ingham Dixon, Robert Manning, concrete, granite, limestone, reinforced concrete, Malachy Walsh & Partners, Waterford County Council, Waterford.
description: Restrictions: Access to this document is restricted as it is embargoed until 2023. To apply for permission to access this document please email Elizabeth Shotton (elizabeth.shotton@ucd.ie).
DOI: 10.14457/cu.the.2012.512
title: Association between herbicide contamination and reproductive effects in freshwater mussel uniandra contradens in agricultural areas, Nan province

description: Nan Province, in the northern part of Thailand, is a fertile area for agricultural activities. Crop rotations in this area lead to widely uses of agrochemicals especially herbicides. To examine whether an intensive use of herbicide could lead to contamination in aquatic environment, sediment and water samples collected from an agricultural catchment in Nan Province were screened for atrazine (GC-MS), paraquat and glyphosate (HPLC). The results showed that detectable levels of atrazine residue were found in water (&lt;0.01-0.16 µg/mL) and sediment (&lt;0.01-0.23 µg/g) of the reservoir. To examine an extent of contamination in biological samples, a freshwater mussel Uniandra contradens collected quarterly from the reservoir during July 2010 to June 2011 were examined for herbicide contamination by enzyme-linked immunosorbent assay. The results showed that detectable levels of herbicide including atrazine (1.26-88.86 ng/g dry weight), paraquat (23.30-55.97 ng/g dry weight) and glyphosate (5.34-11.90 ng/g dry weight) were found in every mussel examined. Monthly sampling and health monitoring of the mussels showed a seasonal change in condition factor, an indicative of overall health, with a significant negative correlation with atrazine and glyphosate residue in the tissue. Reproductive activities as determined by gross- and microanatomical as well as biochemical markers showed that mature sperms can be found throughout the year, indicating prolonged male gametogenic activities. A similar pattern was observed in female mussels with an exception in dry season when oocytes became larger, the vitellogenin level was at peak and swelling gills with mature egg deposition was evident. These indicatives of a spawning period occurred in dry season when atrazine contamination was evident, indicating a potential window of susceptibility of the mussel reproduction and development. Using U. contradens as a sentinel of contamination in two reservoirs with different agricultural activities, it was further proven that the mussel could be used as an effective biomonitor with a measurable and correlative response to herbicide contamination. The data from this study could be used as an early warning of the effects of herbicide contamination on freshwater animals and maybe used as a potential link to predict the reproductive health risk of other organisms including human living in this area.
DOI: 10.14457/cu.the.2012.513
title: Mechanistic study of methanol conversion to propylene by phosphorus-modified H-ZSM-5 catalysts using DFT method

description: In this work, reaction mechanism for conversion of methanol to propylene (MTP) over P-H-ZSM-5 catalysts with several models has been theoretically investigated using ONIOM(B3LYP/6-31G+(d,p):AM1) method. The MTP includes three reactions such as methanol conversion to dimethyl ether, ethanol conversion to ethylene, and dimethyl ether conversion to propylene. The reaction energies, thermodynamic properties, rate and equilibrium constants of the MTP reaction over the P-H-ZSM-5 catalysts are reported.
DOI: 10.14457/cu.the.2012.514
title: Synthesis of polyether-polyol grafted with poly(styrene-co-acrylonitrile-co-hydroxyethyl methacrylate)

description: Poly(styrene-co-acrylonitrile-co-hydroxyethyl methacrylate) (polyol-g-PSAH) was grafted onto commercial polyether polyol via radical polymerization using benzoyl peroxide (BPO) as initiator to produce the grafted polyol having high hydroxyl group contents for making polyurethane foam. The structure of polyol-g-PSAH was confirmed by NMR, FT-IR, and GPC. The product obtained was pale yellow colloid. The viscosity and particle size of colloid were in the range of 2,200–19,000 cPs and 0.18-0.71 µm, respectively. Increasing hydroxyethyl methacrylate (HEMA) concentration led to a decrease in its viscosity and particle size.The concentration of initiator that yielded the most appropriate viscosity is 6 mol%. At high reaction temperature afforded small particle size and high viscosity. Investigation of factors on grafting properties revealed that high concentration of HEMA and initiator afforded high grafting efficiency of St/AN/HEMA and low free homopolymer content. The optimum of reaction temperature to obtain high PSAH grafting was observed at 115°C. Using polymer polyol of 50% wt based on total polyol in synthesis of flexible polyurethane foam (FPU) showed high compression strength (240 kPa) while the density of FPU foam preserved at the same level with the unmodified foam.
DOI: 10.14457/cu.the.2012.515
title: Development of oil sorbents from cellulose by acetylation

description: Oil spills impose a global impact on the environment, living organisms and economy. This study attempted to develop materials for oil spill cleanup from acetylation of jointed grass pith and kapok fiber with acetic anhydride in solvent free system. The extent of acetylation was quantitatively determined using the degree of substitution (DS), which varied acetic anhydride content, amount of catalyst, reaction temperature and reaction time. The results showed that acetylated jointed grass pith and acetylated kapok fiber with high degree of substitution (DS=2.79 and 2.59) were achieved with 40 and 80 mL of acetic anhydride, 80˚C, 2.0 hours of reaction time using 1.5% N-bromosuccinimide (NBS) as a catalyst. The characterization of the acetylated products was evaluated by SEM, FT-IR, 13C-NMR and TGA. The acetylated product showed high sorption capacity than the non-acetylated ones. The acetylated jointed grass pith had the same oil sorption capacity as commercial sorbent at 7.46, 7.61 and 7.70 g oil/g sample for machine oil, motor oil and Bunker C, respectively. While acetylated kapok had much higher oil sorption capacity at 76.72, 76.74 and 79.89 g oil/g sample. Accordingly, the acetylated kapok fiber can be the alternative oil sorbent to substitute the non-biodegradable materials for oil spill clean up.
DOI: 10.14457/cu.the.2012.516
title: Synthesis and characterization of 1,3-alternate calix[4]arene-based metal-organic frameworks

description: This research involves the syntheses of 1,3-alternate calix[4]arene derivatives to use as organic linkers in the construction of calix[4]arene-based metal-organic frameworks (MOFs). These organic linkers, 1,3-alternate calix[4]arene tetra-p-benzoic acid (3A) and 1,3-alternate calix[4]arene tetra-m-benzoic acid (3B) are structural isomers which the carboxylic acid groups are at para and meta positions of phenyl substituent units, respectively. Each of organic linkers was synthesized in 3 steps with total yields of 38 % for 3A and 34 % for 3B. The obtained organic linkers were employed in synthesis of metal-organic frameworks with various metal ions in dimethylformamide solvent by solvothermal syntheses methods in various containers; round-bottom flask, sealed tube, auto clave and the obtained 1,3-alternate calix[4]arene-based MOFs were investigated their morphologies and gas adsorption properties for the potential use in gas storage. Morphologies of obtained MOFs as micro-particles of MOFs were found in various forms, such as needle-like, cubic, rod and platelet shapes. The nitrogen adsorption-desorption isotherms featured as type III adsorption isotherm which was typical for nonporous materials. Fortunately, the single-crystals of both organic linkers and 1,3-alternate calix[4]arene-based MOFs were obtained which have been characterized by sc-XRD technique. The single-crystal structures of MOF prepared by using 3A and Zn(II) ion (named, CU-SCRU1) exhibited as three dimension structure via the arrangement of the polymeric coordinated linear chain. In the case of MOF that synthesized by using 3B and Zn(II) ion (named, CU-SCRU2), the coordinated bond between organic linker, 3B and Zn(II) ion formed to be a zig-zag polymeric chain and extended by intermolecular interaction to provide the three dimension frameworks. Moreover, in the reaction of 3B and Cd(II) ion yielded two different single-crystal structures. Their single-crystal X-ray diffraction study revealed that they were three dimensional framework, crystallizing in monoclinic (named, CU-SCRU3) and orthrorombic (named, CU-SCRU4). Apart from their gas adsorption property of 1,3-alternate calix[4]arene-based MOFs, their catalytic property were preliminary investigated but it was revealed that they were not suitable for using as catalyzing in Friedel-Craft alkylation reaction.
DOI: 10.14457/cu.the.2012.517
title: Polyaniline/montmorillonite nanocomposites for corrosion protection of steel

description: Polyaniline/montmorillonite (PANI/MMT) nanocomposites were synthesized by in situ chemical oxidative polymerization for corrosion protection of steel. The polymer clay nanocomposites were prepared by varying the MMT content (1, 3, 5 and 7 wt% based on monomer content). The results showed that the maximum monomer conversion was 75.8% at MMT content of 1 wt%. PANI/MMT nanocomposites was characterized by Fourier-transform infrared spectroscopy (FT-IR). The results showed functional groups of hydroxyl (-OH), cyanide (-CN) and amide (RCONHR) which attributed to PANI and MMT characteristic. PANI intercalated between the layers of MMT was confirmed by X-ray diffractometer. The montmorillonite layer and the agglomerated spheres of polyaniline dispersed in the nanocomposites morphology were observed by scanning electron microscope (SEM). The thermal stability of PANI/MMT nanocomposites, examined by thermogravimetric analysis (TGA), was enhanced by an increasing in MMT content. From corrosion study in 1.0 M sulfuric acid solution, steel coated with PANI/MMT nanocomposites film showed better corrosion resistant than steel coated with PANI film. The increased in the amount of MMT in nanocomposites and film thickness could improve anticorrosive properties due to an increasing in tortuosity of diffusion pathway of corrosion agents. The steel coated with 50 µm thickness of PANI/MMT (5 wt%) showed the best corrosion resistance comparing to the other coated steel.
DOI: 10.14457/cu.the.2012.518
title: Production of isomalt with hydrogenation method

description: In this research, the effects of operating conditions on the hydrogenation of isomaltulose were evaluated. The reaction was catalyzed with Ru/C catalysts prepared from the impregnation of Ruthenium on activated charcoal powder. The catalysts were characterized by N2 physisorption, XRD and XRF techniques. The reactions were carried out in a pressure vessel stirring reactor, with isomaltulose (40 wt% in DI water) where the impeller speed was maintained at a maximum speed of 670 rpm. The Ru/C catalyst was calcined in argon at 500°C for 4 h, and reduced at 200°C under flowing H2 for 2 h. The hydrogenation of isomaltulose was successfully performed with 10% Ru/C catalysts. The rate of reaction increased with increasing weight ratio of catalyst/reactants at the reaction temperature of 130 °C and 50 bar. The reaction rate followed the first order dependency with respect to hydrogen. The kinetics fitted best with Langmuir-Hinshelwood-Hougen-Watson (LHHW). The observed activation energy confirmed that the reaction was under chemical control. The Ru/C catalyst seemed to be relatively stable as it still provided a complete hydrogenation of isomaltulose even after reusing in three consecutive batches
DOI: 10.14457/cu.the.2012.519
title: Biodiesel production from different palm-oil feedstocks with hydroprocessing process over Ni-Mo/Al₂O₃and Co-Mo/Al₂O₃ catalysts

description: In this research, relevant palm oil i.e. degummed palm oil (DPO), refined palm stearin (RPS) including hard and soft stearin are employed as feedstock to produce bio hydrotreated diesel. The reaction was performed in parallel small batch reactor under reduced pressure of 50 bar catalyzed by sulfided NiMo/y-Al₂O₃ and CoMo/y-Al₂O₃ catalyst. CoMo catalyst shows much lower catalytic activity than NiMo catalyst at low opearting temperature (&lt;360 °C) and become comparable to NiMo catalyst at higher temperature. However, NiMo catalyst generally gives higher selectivity of diesel range hydrocarbon therefore higher diesel yield. Under the defined operating condition, conversion (of triglyceride and fatty acid) could be in order of RPS hard &gt; RPS soft &gt; DPO which indicating that higher degree of saturation of feedstock lead to obtain higher conversion. Maximum of diesel range hydrocarbon yield of 71% could be obtained from RPS hard at reaction temperature of 360 °C for 4 h with sulfided NiMo/y-Al₂O₃ catalyst.
DOI: 10.14457/cu.the.2012.520
title: Synthesis of polyisoprene/montmorillonite nanocomposites via differential microemulsion polymerization

description: Polyisoprene-montmorillonite nanocomposites were successfully synthesized via differential microemulsion polymerization by using 2,2-azoisobutylronitile. PIP-CS15A nanocomposites with particle size of 30 nm and narrow size distribution were obtained. PIP was intercalated in the layer of CS15A, as confirmed by X-ray diffractometer that d-spacing of CS15A layer was expanded from 3.11 nm to 3.82 nm. Morphology of PIP-CS15A nanocomposites was determined by transmission electron microscope (TEM). Surfactant concentration, monomer to water ratio and CS15A loading were found to affect monomer conversion, solid content and particle size of PIP-CS15A nanocomposites. The monomer conversion of 81% was achieved at 10 %wt CS15A loading, monomer to water ratio of 0.24:1, initiator concentration of 0.25 %wt and surfactant concentration of 12 %wt based on isoprene monomer. PIP-MMT nanocomposites could be used as an effective nano-filler in natural rubber (NR) latex for the preparation of NR/PIP-MMT composites by pre-vulcanization. For NR/PIP-MMT composites, the mechanical properties in tensile strength and modulus of elasticity were dramatically improved as compared to unfilled NR. The tensile strength of NR/PIP-CS15A composites of 17.7 MPa was obtained at 2 %wt of CS15A content. The stability of NR/PIP-CS15A composites after thermal ageing increased as compared to unfilled NR by maintaining 87.6% of its tensile strength and 84% of its modulus of elasticity at 2 %wt of CS15A content.
DOI: 10.5519/qd.8e7010xy
title: Query on the Natural History Museum Data Portal (data.nhm.ac.uk) (43 records)
DOI: 10.7925/drs1.ucdlib_255945
title: Boatstrand Harbour County Wexford poster

description: PDF poster with historical summary, plan view of LiDAR scan data, and perspective image for Boatstrand Harbour.
description: Keywords: Harbours, Ireland, Maritime, Engineering, Heritage at Risk, LiDAR, Transportable Data, Boat Strand, Dunbrattin, Dunabrattin, 19th century, 21st century, Thomas Ingham Dixon, Robert Manning, concrete, granite, limestone, reinforced concrete, Malachy Walsh & Partners, Waterford County Council, Waterford.
DOI: 10.7925/drs1.ucdlib_255946
title: Boatstrand Harbour photographic survey November 15, 2013

description: Site survey of Boatstrand Harbour before refurbishment by Malachy Walsh & Partners.
description: Breakwater -- Breakwater, Pier -- Pier -- Slipway -- Quay -- Quay to Pier -- Ladder at Quay, Erosion to Concrete -- Ladder on Quay -- Junction Quay to Pier -- Pier Head -- Stairs on Pier -- Breakwater Head -- Breakwater Head base -- Pier and quay -- Sluice in Breakwater -- Exterior of Breakwater -- Exterior Breakwater -- Pier and Breakwater Heads -- Exterior Face of Pier -- Exterior of Pier -- Detail Exterior of Pier - ties -- Exterior of Pier, repairs to base using 'rubble concrete' -- Repairs to base of Pier using 'Rubble Concrete' circa 1893? -- Erosion to base of exterior pier
description: Keywords: Harbours, Ireland, Maritime, Engineering, Heritage at Risk, Boat Strand, Dunbrattin, Dunabrattin, 21st century, reinforced concrete, Malachy Walsh & Partners, Waterford County Council, Waterford.
DOI: 10.7925/drs1.ucdlib_255947
title: Boatstrand Harbour photographic survey July 1, 2016

description: Representative selection of photographic site survey for Boatstrand Harbour.
description: Exterior of Breakwater -- Pier -- Breakwater and Pier Heads -- Breakwater -- Breakwater and sluice -- Breakwater and sluice at back quay wall -- New works at back of harbour by Malachy Walsh and Waterford Co. Co. -- New works at back of harbour by Malachy Walsh and Waterford Co. Co, meeting pre-existing quay wall -- Pier and quay wall -- Sluice in Breakwater -- Breakwater and Pier from back of harbour -- Quay Wall -- Exterior of Breakwater meeting new works and new slip -- Pier Head, with old concrete still exposed next to refurbishment works -- Pier, new concrete work -- Quay new concrete work -- Quay and new concrete slip -- Sluice in Breakwater showing junction between new cast-in-situ work and old concrete blocks -- Entrance to harbour -- New Concrete work at old Quay edge -- New concrete upstand and new ladders on quay - old stone coping still exposed -- New ladders on quay -- Breakwater Head -- Junction of Quay and Pier, start of limestone setts on pier -- Pier, new concrete cast against old wall, old stone coping still exposed -- Limestone setts and granite mooring posts on Pier -- Limestone setts on pier -- Concrete steps over road wall to exterior of harbour -- Rubble Concrete Parapet wall on Pier -- Pier head at steps -- Granite mooring post on pier -- Top of steps on pier -- End of pier head pre-refurbishment -- Mooring posts on pier -- New quay wall -- Exterior of pier head -- Cracking in exterior of pier -- Exterior face of pier with 'rubble concrete' repair at base -- Rubble concrete repair at base of pier, circa 1893 -- Rubble concrete repair meeting later [?] addition at corner to bedrock to pier -- Later [date?] rubble concrete wall supporting slab at corner of pier with bedrock -- Detail of ladder in new concrete facing -- Extra bollard/mooring post [2 positioned in beach in renovation] -- New works at rear of harbour -- New works at rear of harbour including 2 mooring posts set in sand -- Exterior face of pier -- Exterior base of pier at corner to bedrock -- Exterior base of pier -- Exterior base of pier at corner section - stone work is continuous? -- Exterior of pier - rubble concrete base with cast concrete above -- Exterior corner base of pier -- Rubble concrete base of exterior of pier -- Corner of base of pier meeting bedrock
description: Keywords: Harbours, Ireland, Maritime, Engineering, Heritage at Risk, LiDAR, Transportable Data, Boat Strand, Dunbrattin, Dunabrattin, 19th century, 21st century, Thomas Ingham Dixon, Robert Manning, concrete, granite, limestone, reinforced concrete, Malachy Walsh & Partners, Waterford County Council, Waterford.
DOI: 10.14457/cu.the.2012.521
title: Product development of pasteurized ready-to-cook marinated white shrimp Litopenaeus vannamei in green curry paste

description: The first part of this research aimed to study the effect of treated shrimp using 2% NaCl in combination with three additives: sodium tri-polyphosphate (STPP), sodium bicarbonate (NaHCO3) and microbial transglutaminase (MTGase) at different concentrations (2, 5 and 8%) and immersion times (10, 30 and 60 minutes) on the quality of white shrimp (Litopenaeus vannamei). In average, the three additives with 2% NaCl significantly affected the water holding capacity (WHC), cooking loss (CL), weight gain (WG), moisture content (MC) and total viable count (TVC) of white shrimps. Immersions in 5% MTGase with 2% NaCl for 30 minutes at 4±2°C improved the quality of white shrimp when compared with control. It increased weight gain (15.7%), maximizes WHC up to 94.5%, lowered CL to 10.1% and reduced 1.44 log CFU/g of total viable count (TVC). The second part studied the effects of pasteurization on marinated shrimp in green curry paste at 5 conditions (T1) 65°C for 32.5 minutes, (T2) 67°C for 18.5 minutes, (T3) 68°C for 17 minutes, (T4) 69°C for 7 minutes, (T5) 70°C for 7 minutes in comparison with the control (non-pasteurized) sample. TVC of pasteurized marinated shrimp (T1 to T5) was lower than 10 CFU/g and Listeria spp. was not detected in 25g sample, while the TVC for control was 3.67 log CFU/g and Listeria spp. was 1.18 log CFU/g. The pH value of pasteurized marinated shrimp (T1 to T5) was significantly lower than the non-pasteurized marinated shrimp. The shear force for samples pasteurized at T3, T4 and T5 was not significantly different from control. Sensory evaluation result showed that the highest score for overall acceptability was 5.75 for the product pasteurized at 70°C for 7 minutes (T5). Treatment 5 (70°C for 7 minutes) was selected to prepare pasteurized sample for the shelf life study. From shelf life study, the pasteurized marinated shrimp in green curry paste was safe for consumption until the end of storage period for 15 days at 0-3°C. There was no significant difference between pasteurized products stored at 0-3°C with freshly prepared product up to 15 days for all attributes that were sensorial tested.