cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2018.149
title: Development of composite polyelectrolyte complex membrane for cationic dye and heavy metal sorption

description: The sorption process is most useful in water treatment because it provides high sorption efficiency, low cost and rapid method. Polyelectrolyte complex (PECs) is a novel polymeric membrane prepared by mixing between oppositely charged polyelectrolyte solution of PDADMAC and PSS. Activated carbon (ACs) is used to improved adsorption efficiency in PECs. Non-stoichiometric PDADMAC/PSS membrane were prepared by mixing excess PSS concentration to get the negative charges on the membrane surface. Sorption efficiency was evaluated by methylene blue, cationic dye and heavy metal ions based on the same material, the difference sorption mechanism were observe. In the cationic dye, the adsorption mechanism operated by excess PSS on membrane surface via electrostatic interaction. The maximum adsorption capacity occur in a removal salt 1:2 PDADMAC:PSS mole ratio (R-1:2) without AC which is 4.9 mg g-1 with 10 mg l-1 of methylene blue concentration. Furthermore, R-1-2 fitted with pseudo-second order kinetic model and Temkin isotherm model with physical adsorption type and also regenerated by salt solution. In contrast, the heavy metal ions sorption operated ion exchange mechanism, 1:2 PDADMAC:PSS without AC show highest sorption capacity which is 30 mg g-1 with 50 mg l -1 of Cu2+ ions concentration. The mechanism occur between Na+ on PSS chain and Cu2+ ions in solution. The metal ions sorption fitted with pseudo-second order kinetic model and Freundlich isotherm model with chemical sorption type and bilayer surface sorption and shows high selective of Pb2+ and Cr 3+metal ions.
DOI: 10.13145/bacdive142438.20191129.4.1
title: Ochrobactrum anthropi

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142439.20191129.4.1
title: Ochrobactrum anthropi

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.150
title: Optimization of single refrigerant conocophillips lng cascade process

description: An LNG cascade process operates under high pressure and extremely low temperature to liquefy natural gas, requiring very high work input to the compressors. This thesis performed the optimization of the single refrigerant ConocoPhillips LNG process by a global optimization technique based on the domain and image partitioning methodology (Faria and Bagajewicz, 2012) to minimize work input to the system. The procedure consists of an NLP upper bound and MILP lower bound models. The lower bound model was formulated by discretizing and linear relaxation of the upper bound non-linear equations by assigning new integer variables and a set of linear constraints. To guarantee the global optimum, the difference between objective function of the upper and lower bound model must be small. The ConocoPhillips LNG process consists of three liquefaction loops which are propane, ethylene and methane loops. Thermodynamic properties prediction model consisted of a metamodel based on quadratic polynomials regressed from Peng-Robinson EOS. Several minimum approach temperatures were performed and the results showed that the lowest approach temperature of 3 K was the most efficient case that gave the lowest refrigerant flowrates, and the lowest total work input to the compressors. A simple cost analysis was performed both CAPEX and OPEX. The problem was solved in GAMS and the results were verified by PRO/II simulation software.
DOI: 10.13145/bacdive142440.20191129.4.1
title: Oligella ureolytica

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.151
title: Light responsive with metallo-, and hydrogen bonded benzoxazine dimer-based supramolecular structure

description: The present work focuses on multi-responsive molecule based on supramolecular chemistry of benzoxazine dimer as a benzoxazine supramolecular crosslinker, fluorescent labelling benzoxazine conjugated with rotaxane system and benzoxazine pendant group block copolymer. The use of azobenzene derivatives in benzoxazine synthesis provides light responsive behaviour. The remained hydroxyl group from aminoalcohol allows benzoxazine to conjugate with desired functional group. The dihydroxyl benzoxazine acts as molecular crosslinker for poly(acrylic acid) by conjugation. The ring-opening reaction brings benzoxazine dimeric unit on the crosslinker which also showed metal ion complexation. The complexation strengthens the cross-linked polymer network. The complex can reversely form by treating with EDTA and CuCl₂ solution in cycle. The use of fluorescent phenol in the ring opening also brings fluorescent property. The conjugation of light responsive benzoxazine with rotaxane system followed with ring opening reaction using fluorescent phenol allows us to detect the shuttling of rotaxane. Moreover, the metal ion complexation and cis/trans isomerization were also detected by fluorescent property. The benzoxazine side group polymer can be obtained from conjugation of light responsive benzoxazine with acrylate derivatives. The polymerization with ATRP provides block copolymer. The UV light exposure and metal ion complexation affects morphology of the block copolymer.
DOI: 10.13145/bacdive142441.20191129.4.1
title: Agrobacterium radiobacter

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142442.20191129.4.1
title: Agrobacterium radiobacter

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.152
title: Use of binary surfactant formulations in low ift foam and surfactant flood

description: Viscous fingering and early breakthrough are the main problems observed during the water flooding. These problems could be overcome by using foam flooding by coinjection of surfactant solution and nitrogen gas as a mobility control in a porous media to help improve the sweep efficiency. To gain the maximum benefits of foam flooding, ultra-low interfacial tension foam was studied to obtain a foaming system with high sweep efficiency and at the same time high oil solubilization to help mobilize the oil phase from reservoir rock. In this work, mixed surfactant systems between sodium dioctylsulfosuccinate (AOT) and internal olefin sulfonate (IOS) with three different carbon chain lengths were tested through phase behavior studies and interfacial tension measurements without adding alcohol. The optimal type III middle phase microemulsion with ultra-low interfacial tension in the order of 10-3 mN/m could be obtained from the mixed systems of 1:1 surfactant/cosurfactant ratio (AOT:IOS) with a wide range of optimum salinity. Surfactant and foam floodings were conducted by a sand pack glass column at atmospheric pressure and ambient temperature. High oil recovery (&gt;10% OOIP) at the optimum salinity was obtained in both surfactant flooding which Type III microemulsion played a key role in oil solubilization and better sweep efficiency by foam flooding.
DOI: 10.13145/bacdive142443.20191129.4.1
title: Kingella denitrificans

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.153
title: Conversion of n-Pentane to aromatics: effect of surface modification by chemical liquid deposition and promoter over nano scale Ga/HZSM-5

description: This work studied the effects of chemical liquid deposition, i.e., TEOS concentration and multicycle silylation on Ga/HZSM-5 on their catalytic performance in aromatization of n-pentane. The parent nano scale HZSM-5 zeolite catalysts were incorporated with Ga by impregnation method followed by silylation via chemical liquid deposition (CLD) using tetraethyl orthosilicate (TEOS) by varying concentrations and number of cycles. Moreover, the small amount of Pt, Zn, La and P was introduced by co-impregnation method to study the effect of promoter. The physical and chemical properties of catalysts were characterized by N2 physisorption, XRD, NH3-TPD, IPA-TPD, TPO, TPR, SEM and 27Al MAS NMR techniques. Catalytic activity was tested in a continuous flow fixed-bed reactor at 500 °C, atmospheric pressure, and WHSV of 5 h-1. The results indicated that the addition of Ga greatly improved the aromatics selectivity due to the presence of GaO+ species which acted as active site for dehydrogenation reaction. The TEOS concentration slightly increased the p-xylene selectivity while multicycle silylation significantly improved the p-xylene in mixed xylenes due to the formation of uniformity inert silica layer. The silylated catalyst exhibited the lower of n-pentane conversion resulting from its lower external acid sites. The co-impregnation with P promoted the aromatics selectivity because there was formation of SAPO interfaces, pentahedrally aluminium framework and medium acid sites.
DOI: 10.13145/bacdive142444.20191129.4.1
title: Anaerococcus prevotii

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142445.20191129.4.1
title: Pasteurella dagmatis

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.154
title: Kinetics study for fischer-tropsch synthesis over cobalt catalyst by kinetic monte-carlo simulation

description: Kinetic Monte-Carlo simulation was utilized to study the kinetic behaviors of C₁ and C₂ formation in the Fischer-Tropsch synthesis over the cobalt surface by varying reaction conditions. Two reaction models: the carbide mechanism and the CO insertion mechanism were applied to this simulation. The production rates and fractional coverages of each adsorbed species could be calculated under the steady state. Moreover, the combination between carbide and CO insertion mechanism was also studied to suggest the possibility of each reaction mechanism, and compared the results with the reported experimental results under the same conditions. It was ob-served that the C–C bond formation was mainly performed through the insertion of adsorbed CO into a metal–methyl bond. Based on the CO insertion mechanism, the results obviously presented that the process conditions essentially influenced on the reactivity and selectivity of the reaction. The system exhibited non-reactive regions at the temperature below 463 K and the H₂/CO feed molar ratio lower than 1.1. In the steady reactive states, the surface is predominantly covered with adsorbed H and CO, and played an important role in the hydrocarbon chain growth.
DOI: 10.13145/bacdive142446.20191129.4.1
title: Salmonella enterica

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142447.20191129.4.1
title: Salmonella enterica

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.155
title: Methane hydrate formation and dissociation : roles of promoters

description: Roles of promoters become necessary in methane hydrate formation for the attempt of gas storage application, but some additives might cause unwanted results in gas recovery. The effects of amino acids (l-leucine and l-valine) and surfactants, sodium dodecyl sulfate (SDS), and methyl ester sulfonate (MES) was investigated at 8 MPa and 2 to 4 °C. L-leucine system enhanced hydrate formation because of its surface activity and surface adsorption at interfaces. A noticeable methane uptake yield was also observed in the l-valine solution. Its influences might be from the nature of l-valine that has non-polar, aliphatic hydrophobic side chain resulting in lower surface activity or surface adsorption at gas/liquid interfaces. Moreover, synergism between MES and SDS was observed with fast kinetics and high gas uptake because of micelle formation to lower the interfacial tension in the solution. At the same scale of the concentration, 0.23 wt% (CMC-SDS), amino acids cannot achieve methane hydrate formation compared to surfactants. The comparison of promoting an effect of each promoter at the optimum concentrations was exhibited by using 0.5 wt% l-leucine, 0.7 wt% l-valine, 0.23 wt% and 0.12 wt%. Although every promotor was possible to achieve high methane uptake, its pros and cons were clearly indicated. The formation with the amino acids was found with much slower formation rate. However, dissociated gas from the surfactants caused a lot of foam that could against the gas release, taking for a longer time to complete the gas recovery, and losing the amount of surfactant. Unlike the surfactants, methane could be recovered from the hydrate formed with the amino acids at a faster rate and reusability.
DOI: 10.13145/bacdive142448.20191129.4.1
title: Finegoldia magna

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.156
title: Adsorption of methane and carbon dioxide on activated carbon and metal organic frameworks

description: Natural gas has gain popularity for transportation among other fuels since it is the cleanest burning fossil fuel. However, the important challenge for utilizing natural gas is its comparatively low volumetric energy storage density. Consequently, a suitable natural gas storage is needed. Adsorbed natural gas (ANG) is an interesting alternative because it could be expected to reduce the cost and potential damage from compressed natural gas (CNG) and liquefied natural gas (LNG) technology. Comparative adsorption of methane and carbon dioxide on activated carbon ZIF-8, UiO-66, and MIL-53 (Al) was investigated at 35 °C and up to 100 psi. The addition of PVDF in ZIF-8 and activated carbon were also studied including 75 wt% ZIF-8, 50 wt% ZIF-8, 25 wt% ZIF-8, 50 wt% ZIF-8, and 25 wt% ZIF-8. The result shows that the methane and carbon dioxide adsorption increase with the pressure. MIL-53 shows the highest methane and carbon dioxide adsorption. The high surface area and micropore volume corresponds to the high methane and carbon dioxide adsorption. However, the high micropore volume to total pore volume ratio also contributes to higher methane adsorption in the case of ZIF-8 and UiO-66. ZIF-8 has higher methane adsorption than UiO-66 although they have about the same surface area and micropore volume. On the contrary, UiO-66 has higher carbon dioxide adsorption than ZIF-8 affecting from chemical properties such as an open metal site and an organic ligand. Moreover, ZIF-8 has the highest CH4/CO2 selectively because it has high surface area, high micropore volume, high micropore volume to total pore volume ratio, and proper open metal site and organic ligand.
DOI: 10.13145/bacdive142449.20191129.4.1
title: Gardnerella vaginalis

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142450.20191129.4.1
title: Capnocytophaga canimorsus

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.157
title: Heat Exchanger Network Design/Retrofit with Partitioning Technique for Linearization of Specific Heat Capacity-Temperature Relation

description: Heat Exchanger Network (HEN) design has been studied for 40 years starting from heuristic technique; pinch analysis and design method to mathematical programming. The stage-wise superstructure by mathematical programming from Yee and Grossmann (1990) was one of the famous models suitable for industrial HEN design under assumption of constant average specific heat capacity (Cp) which generally should be fitted by empirical form of cubic equation. Zhu and Asante (1999) and Ayotte-Sauvé et al. (2017) used piece-wise linearization called stream segment model, to approximate Cp. Their Cp approximation techniques used high number of piece-wises to calculate Cp accurately. This paper presents novel technique called partitioning technique; using less number of piece-wise to approximate temperature-dependent Cp more accurately along with stage-wise superstructure model. The concept is to linearize polynomial cubic equation of Cp as a function of temperature with different Cp approximation techniques from Zhu and Asante (1999) and Ayotte-Sauvé et al. (2017). Cp is approximated as a linear equation for each partition of temperature range. Our technique in weighted average Cp calculation at stage in stage-wise superstructure model is novel, giving more accurate Cp approximation and HEN synthesis at validation step. Our model synthesizes HEN with less total annualized cost (TAC) and exchanger area calculation error between our model and Pro/II simulated HEN compared to other models; constant Cp model and cubic equation technique from Kim and Bagajewicz (2017) represented by four examples. First, crude preheat train example from Pro/II library is used to validate new concept. Normally, constant specific heat capacity directly affects outlet temperature which increase error of area calculation. It shows that constant heat capacity flow rate can reach error of heat exchanger area 30 % but using the new model can reduce the error to less than 1 %. Next, two examples from Kim and Bagajewicz (2017) get better result when compared to previous solution of cubic equation technique. Forth example is to show new model in retrofit case. Therefore, new model has many advantages that it increases accuracy of HEN design and better solution can be obtained from variable of specific heat capacity.
DOI: 10.13145/bacdive142451.20191129.4.1
title: Flavobacterium sp.

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142452.20191129.4.1
title: Gardnerella vaginalis

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.158
title: Removal of mixed VOCs of benzene, Toluene and xylene by a multistage corona discharge system

description: The oxidation of mixed volatile organic compounds (VOCs) of benzene, tol-uene and xylene in non-thermal plasma corona discharge was investigated. An initial total VOCs concentration of 100 ppm and feed flow rate of 50.0 ml/min were firstly fixed to investigate the effects of an applied voltage and input frequency on VOCs conversion, power consumption and CO₂ and CO selectivities. For a single stage plasma system, under the optimum applied voltage of 8 kV and input frequency of 500 Hz, the system gave the high CO₂ selectivity with the low CO selectivity and the lowest power consumption. At the optimum operationable conditions, the effect of reactant feed flow rate and stage number were examined. The increase in reactant feed flow rate from 25 to 125 ml/min corresponding to the reduction of residence time from 0.92 to 0.19 s resulted in decreases in both of VOCs conversion and CO₂ selectivity from 97.7 to 63.9% and 84.0 to 22.6%, respectively while the CO selectivity was increased from 8.2 to 62.4%. An increase in stage number from one to two stages caused an increase in the total VOCs conversion approximately 100% especially for the feed flow rate of 100 ml/min.
DOI: 10.13145/bacdive142453.20191129.4.1
title: Francisella philomiragia

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.159
title: Novel (Cu-Sn) AND (Ni-Sn) catalysts prepared by mechanical alloying

description: This research was aimed to synthesize intermetallic catalysts using mechanical alloying (Ma) technique. Copper (Cu) and nickel (Ni) were chosen to study since not only their properties are closed to the noble metal properties, e.g. platinum and palladium, but also they are not expensive. However, as also found in noble metals, both Cu and Ni metals are oxidized easily in air. To overcome this problem, either Cu or Ni was mixed with tin (Sn) to obtain bimetallics, viz. CuSn or NiSn, respectively. Therefore, this research was focused on finding the optimal conditions to synthesize both CuSn and NiSn bimetallics using the Ma technique and studied their catalytic activity on phenol hydroxylation and hydrogenation of cinnamaldehyde, as well. Structural characterization was carried out using various instrumental techniques.
DOI: 10.13145/bacdive142454.20191129.4.1
title: Aggregatibacter actinomycetemcomitans

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142455.20191129.4.1
title: Moraxella osloensis

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.14457/cu.the.2018.160
title: Evaluation of environmental impacts for non-metallic part in waste printed circuit boards (PCBs) using combined material flow analysis (MFA) and life cycle assessment (LCA)

description: Printed circuit boards (PCBs) have become common components in most electric and electronic equipment. Because of their wide ranges of application, waste PCBs is becoming one of the most rapidly growing wastes. Recycling of waste PCBs is an important subject not only for the protection of the environment but also for the recovery of valuable metals. This study aimed to evaluate the waste PCBs management strategies using the combination of material flow analysis (MFA, STAN v.2.6.801) and life cycle assessment (LCA, SimaPro v.8.3.0.0) methods. The waste management scenario was considered for three different options; disposal of the waste PCBs (Option 1), separation as metallic and non-metallic parts before final disposal of the waste PCBs (Option 2) and recycling non-metallic parts of the waste PCBs (NM-PCBs) as a filler additive in HPDE compounded plastic (Option 3). From MFA results, PCBs can be separated into 71 wt.% of NM-PCBs and 29 wt.%. For climate change impact, the results demonstrated that the least impact value was the recycling the NM-PCBs (Option III) about 21.63 kg CO₂-eq which lower than disposal to landfill and incineration (Option I) about 26.59 kg CO₂-eq. The recycling of NM-PCBs as the substitute material for the production of recycling plastic supported a better environment in terms of climate change (kg CO₂-eq), human toxicity (kg 1,4-DB-eq.), terrestrial ecotoxicity (kg 1,4-DB-eq.) and metal depletion (kg Fe-eq). The ratio of NM-PCBs in virgin HDPE had a linear effect on the environmental impacts. Furthermore, the combination of MFA and LCA methods suitable for a powerful assessment of impact which supporting management of waste PCBs.
DOI: 10.13145/bacdive142456.20191129.4.1
title: Salmonella enterica

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive142457.20191129.4.1
title: Salmonella enterica

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.