bluuebunny/crossref_metadata_2025_split huggingface dataset:
CO2 removal via promoted potassium carbonate with glycine: solubility measurement at elevated pressure
Authors: Isa F , Zabiri H , Shaarif M A 
Published: December 2019

Abstract
Potassium carbonate promoted with glycine is considered as potential candidates for CO2 removal process as it demonstrated less energy usage during the regeneration process. Hence, in order to model the process at upscale condition, the loading of CO2 into the promoted solvent is measured at temperature (30-60 0C) over the elevated pressure (10 bar) using high pressure solubility cell. The equilibrium solubility data is measured for 15wt% potassium carbonate + 3wt% glycine and 20wt% potassium carbonate +5 wt% glycine. This work aims to study the solubility of CO2 into the promoted solvent at higher operating pressure, thus the vapor liquid equilibrium (VLE) can be derived and further facilitate the development of simulation for CO2 absorption process at the upscale condition. Results show that the CO2 is less favor to absorb into the promoted solvent at high temperature since the process is exothermic, thus increasing temperature would decrease the tendency of the absorption process. The comparative analysis also showed that solubility is improved at higher pressure as greater force assist to alleviate the surface stress of the solution.
Simulation of pressurized water scrubbing process for biogas purification using Aspen Plus
Authors: Abu Seman N , Harun N 
Published: December 2019

Abstract
Biogas produced from anaerobic digestion process has a major amount of biomethane (bioCH4), carbon dioxide (CO2), and traces amount of impurities. It must undergo biogas cleaning first to remove the impurities depending on the requirement of the applications. Pressurized water scrubbing is the most applicable method for removing CO2 because of its simplicity, low cost, and low toxicity. This study aims to develop a pressurized water scrubbing process model for biogas purification using Aspen Plus software. Several process parameters such as absorber column pressure and liquid to gas (L/G) ratios were varied to investigate their effects on bioCH4 purity and percentage of CO2 removal. The simulated results show good agreement with previous work and agreed well with the typical standard concentration of bioCH4 of over 95% to be used as vehicle fuels or in a gas grid.
Characterization of bioactive compounds extracted from patchouli: Comparing microwave-assisted hydrodistillation and hydrodistillation methods
Authors: Abdurahman N H , Sundarajan S 
Published: December 2019

Abstract
Microwave-assisted hydrodistillation (MAHD) is a promising and advanced technology that uses microwave heating to extract essential oils from dry leaves. Currently available conventional methods are time consuming, thermally unsafe and require costly solvents. In the current study, MAHD and traditional hydrodistillation (HD) techniques were compared and their effectiveness in the separation of the essential oil from dry patchouli leaves have been studied. The patchouli oil that obtained from MAHD and HD extraction methods were characterized using gas chromatography-mass spectrometry (GC-MS) analysis and the impact of the two extraction methods on the plant morphology were observed using scanning electron microscopy (SEM) analysis. The results indicated that MAHD method extracted 5 % of essential oil at solid to solvent ratio of 1:12 g/ml from patchouli leaves as compared to 4 % obtained using HD method at 45 minutes of extraction time. In addition, MAHD method can retain 16 compounds while only 11 chemical compounds were extracted using HD. Thus, MAHD showed a greater potential for better production of the essential oil from patchouli leaves as compared to HD method.
Performance profiling of UV-grafted forward osmosis polyethersulfone membrane using multivariate classical scaling technique
Authors: Rahman A F H A , Mohd Yunus M Y , Nasaruddin T S L M T A , Harun N , Abu Seman M N 
Published: December 2019

Abstract
In this work, Classical Scaling (CMDS) method was used to develop a set of membrane profile performance for various types of UV-grafted polyethersulfone (PES) membrane. Previously, there is no such profiling has been considered. The main motivation of the profiling is to determine what is the most preference impact factor which significantly influence the membrane strength during application. Initially, nine (9) different samples of modified PES membranes were prepared mainly by adopting numerous characterization parameters of acrylic acid monomer concentration and grafting time. Three (3) performance indicators namely water permeability (A), solute permeability (B) and structural parameter (S) were used as representing the foundation of membrane performance profile. In particular, the Euclidean and City-block scales were utilized to build up the multivariate profile based on two dimension configurations. The key finding suggests that the modified membranes were easily clustered based on its grafting mechanism. From the general observation on the compressed CMDS dimensional space, samples that fall above the x-axis in Euclidean scale configuration and those scattered samples in the City-block scale have relatively larger pores. Thus, the CMDS profiling tends to favor the pore size as the dominant impact factor in characterizing the membrane performance based on the three specified parameters that investigated.
Comparison of optimal solvent extraction stages between P204 and [A336][P204] for the separation of europium and gadolinium
Authors: Ismail N A , Mohd Yunus M Y , Abdul Aziz M A , Abidin M A 
Published: December 2019

AbstractThis study was designed to compare between the number of extraction stages required by 2-ethylhexyl phosphoric acid mono 2-ethylhexyl ester P204 and ionic liquid-based system of [A336][P204] in a cascade counter-current extraction process for the separation of europium (Eu) and gadolinium (Gd). Eu and Gd were chosen for this study as these metals are among the strenuous due to low availability in nature and small separation factor. The value of the separation factor (β) of both extractants, was obtained from the experimental work, while other process parameters were calculated using the counter-current model developed by Xu Guangxian. Extraction of Eu using [A336][P204] was found optimum at 3.5 M of nitric acid, with organic to aqueous (O/A) ratio of 9:1, while the optimum condition for P204 was determined at 3.0 M of hydrochloric acid and 9:1 of O/A ratio. The optimized β value for P204 was identified lower (β:2.38) compared to the condition for [A336][P204] (β:3.44). In order to obtain the optimal number of separation stages, the target purity and recovery rates were set to 99.9% and 90% respectively for both extractants. From the Xu model, the results show that [A336][P204] extractant requires at a minimum of four and two extraction and scrubbing stages respectively for maintaining the desired outputs. Meanwhile, P204 extractant needs to develop at least eight extraction stages as well as five scrubbing stages to produce the same production capacity. This finding generally suggests that [A336][P204] is favorable over P204 for the separation of europium and gadolinium particularly from the viewpoint of economic interest.
Diffusion coefficients of trivalent rare earth/actinide ions in acid and alkaline aqueous solutions
Authors: Liyananadirah M S , Deraman M R , Ibrahim W H , Harun N 
Published: December 2019

Abstract
Leaching is one of the key process of rare earth (RE) element recovery. This paper was set out to validate the effectiveness of acid/alkali in RE leaching by measuring the limiting ionic conductivity (λo), self-diffusion coefficient (Di) and overall diffusion coefficient (DAB) to obtain a clear insight on the transport properties of ions and salts in aqueous solution. The calculation diffusivity of Di
which is diffuse individual ions in pure water and DAB
diffuse in chemical reagents were determined using Nernst-Haskell equation, applicable for 25°C. The results of D
i
were found to be consistent with experimental data from the literature where most of calculation and experiment data are less than 5% error. The final outcome had managed to confirm that NaOH is best reagent for most RE element leaching, which suits the common practice of the industry.
Supported liquid membrane for acetic acid extraction: Screening of membrane support preparation factors
Authors: Malid S A A , Saufi S M , Harruddin N 
Published: December 2019

Abstract
It is essential to remove acetic acid from the biomass hydrolysate during the biorefinery process. The product yield can be effected by the acetic acid due to it inhibition to the microorganism used during the fermentation. Supported liquid membrane (SLM) can be used to remove the acetic acid. The membrane support plays important role in the SLM process. However, due to the use of the commercial membrane support, lack of studied was conducted on the fabrication of custom made membrane support for the SLM process. In the current study, two level full factorial design was employed to screen three fabrication factors during preparation of polyethersulfone-graphene membrane support via vapor induced phase separation technique. The factors screened were temperature of water bath (A) (30-60 °C), exposure time (B) (10-60 s) and air humidity (C) (70-90 RH%). The response was evaluated based on the extraction percentage of the acetic acid from 10 g/L aqueous acetic acid feed solution. All three main factors were significant to the SLM performance. Air humidity factor (C) gave the highest contribution of 28.96% among the main factors. In term of the interaction between factors, water bath temperature (A) and exposure time (B) give the most significant effect with 45.01% percentage of contribution. The highest extraction percentage of the acetic acid using SLM system was 75.95% using the membrane prepare at 30 °C water bath temperature, 10 s exposure time and 70% air humidity.
23 fractional factorial design for polymer based thin film composite (TFC) membrane synthesis for CO2/CH4 separation
Authors: Ghazali A A , Roshan R K , Abd Rahman S , Abdul Wahab M S , Hazleen N S , Mandayar N 
Published: December 2019

Abstract
Membrane technology is dominating the industry as an attractive approach for biogas purification due to its outstanding performance. Recently, there have been intensive efforts in the development of better separation efficiency of membrane which include altering the materials and modifying the methods in preparing the membrane. A well-formed membrane is when they achieved both high permeability and excellent separation ability. Therefore, this study is focusing on identifying the best processing factors in PVC/Pebax thin film composite (TFC) membrane development towards CO2/CH4 separation by employing 23 fractional factorial design (FFD). A total of three factors; immersion times (5 & 15 min), Pebax concentration (1 & 5 wt%) and number of coating layers (1 & 4) were chosen to run simultaneously with CO2 permeability and ideal selectivity as the responses for this study. The results show that the most influential factors that affect the permeability are immersion time and Pebax concentration, while for selectivity are Pebax concentration and number of coating layer. The best condition was known to maximize the permeability and selectivity. The identified conditions were immersion time for 15 min, Pebax concentration at 5wt% and 4 layers of coating which gave CO2 permeability and gas selectivity of 19612 Barrer and 7.15, respectively. The outcome of this study indicates that FFD was suitable to minimize and eliminate factors by considering the interaction among the factors involves in membrane film synthesis for excellent gas separation performance. Besides, the existence of Pebax layer was verified by visual interpretation using Scanning electron microscopy (SEM) and Fourier Transform Infrared (FTIR).
A road map to generative safety culture: An integrated conceptual model
Authors: Shahid A , Zaidi M S , Azizan R 
Published: December 2019

Abstract
Evidence has shown that maturity models are a popular means of assessing safety culture in organizations. Maturity models involve defining maturity stages or levels from less to more advanced safety cultures. A maturity model is a descriptive model in the sense that it describes essential, or key, attributes that would be expected to characterize an organization at a particular level. Existing culture maturity models still lacks a concise roadmap of strategies that can guide an organization to progress through the maturity stages from less to advanced. This work proposes a concept to integrate the present general and workplace models and techniques that provides a roadmap to generative safety culture. In doing so, a summary of the current general and workplace literature will be provided, method to integrate them to develop an integrated conceptual model for a generative safety culture, as well as the final integrated model is discussed. This conceptual model can be the basis for further research in order to provide a comprehensive picture of the safety culture improvement and maturity process. Lastly, implications for specific interventions to develop targeted safety culture improvement practices and work towards achieving generative safety culture will be discussed.
Risk analysis of offshore pipeline due to third party damages
Authors: Amri E , Sulaiman N S , Alaw F A 
Published: December 2019

Abstract
The third party damage also known as external factor that contributed to pipeline failure was an unexpected event that considered as threats to human safety. In this work, two risk assessment approaches namely qualitative and quantitative were adopted to predict and measure the causes of offshore pipeline failure due to the third party damages. Qualitative analysis involving causal and consequences of an event was developed using Bow-tie (BT) model to determine the contributing parameter of an event. The parameters obtained were then converted to Bayesian Network (BN) for a quantitative approach. Based on the qualitative analysis, the major threats identified in third party damage were categorized into “anchor impact” and “impact” meanwhile the consequences were human safety, marine life ecosystem and economical loss. Statistical data from PARLOC 2012 were utilized for BN model and transformed into conditional probability table (CPTs). the results generated indicate that the major contribution to pipeline damage was “trawling”. The utilization of Bow-tie and BN analysis may complement the risk analysis of offshore pipeline due to third party damage for more informed pipeline maintenance decisions.
Development of compliance checklist system for landed housing construction activities
Authors: Annuar S N H S M , Sukadarin E H , Zakaria J , Aziz H A 
Published: December 2019

Abstract
In the construction industry (landed housing), most of the accidents and near-misses in occur due to unsafe behavior of the employers and employees. Lacking compliance with regulations is also one of the causes of accidents and near-miss occurrence in the construction industry including for landed housing development). This paper aims to identify Building Operations and Works of Engineering Construction (BOWEC) requirements under Factories and Machinery Act with Regulations (Act 139), Law of Malaysia for landed housing construction activities. Behavior-Based Safety (BBS) approach is used to develop a compliance checklist based on the BOWEC requirements. The developed checklists were validated in terms of its validity by using case study in the construction industry. After the validation processes, the final checklist is ready to be used. The final checklists are divided into two parts; (1) the checklist for the employer and (2) the checklists for employees. Workplace assessment was conducted using the developed checklist. The finding reveals that more than half of the construction activities are comply with the legal requirements.
The implementation of lean manufacturing and ergonomics in Small Medium Enterprise – Case study
Authors: Rose A N M , Ab Rashid M F F , Nik Mohamed N M Z , Jubri M A S 
Published: December 2019

Abstract
Productivity can be increased by eliminating of all wastes. The objective of lean manufacturing is to eliminate wastes. Commonly, there are seven wastes known as transport, inventory, motion, waiting, over processing, overproduction and defects. However, ergonomics is a process to improve the working posture by designing or arranging a workplace, system and material handling. The aim of this study is to improve the productivity through the integration of basic lean manufacturing and ergonomics in the food company. The walkthrough and distribution of questionnaire have been conducted in this company. Each activity was observed to identify non-value-added activity and work related muscular skeletal disorder (WMSD) that affect the productivity by using questionnaire, motion study and Rapid Upper Limb Assessment (RULA). The questionnaire result has shown that the most of wasted motion is in weighing and measuring activity. In addition, all workers in this process were affected by the musculoskeletal disorder at their neck and shoulder. All movement were simulated through Delmia software. The RULA score shows that the worker had experienced pain at the arm and wrist. The score also suggested that the process should be changed immediately. The changes might reduce the worker’s pain and increase the productivity.
Compression power requirements for Oxy-fuel CO2 streams in CCS
Authors: Daud N K , Martynov S , Mahgerefteh H , Nasuha N 
Published: December 2019

Abstract
CO2 compression systems are commonly designed assuming negligible amount of impurities in CO2 fluid, it is of practical interest to evaluate the impact of impurities in oxy-fuel streams on the compression power requirements. Compared to more traditional postcombustion and pre-combustion capture methods, oxy-fuel technology produces a CO2 stream with relatively high concentration of impurities that may require partial or a high level of removal and whose presence can be expected to increase the costs of CO2 compression. Four types of compression technologies employed include four-stage compressor with 4 intercoolers, single-stage supersonic shockwave compressor, three-stage compressor combined with subcritical liquefaction and pumping and three-stage compressor combined with supercritical liquefaction and pumping. The study depicts that decrement of the impurities content from 15 to 0.7%v/v in the CO2 streams reduced the total compression power in the compression system. The study also concludes that three-stage compressor combined with subcritical liquefaction and pumping can potentially offer higher efficiency than four-stage compressor with 4 intercoolers for almost pure CO2 streams. In the case of raw oxy-fuel mixture, that carries relatively large amount of impurities, subcritical liquefaction proved to be less feasible, while supercritical liquefaction efficiency is only marginally lower than that in the four-stage compressor with 4 intercoolers.
Oil emulsions and the different recent demulsification techniques in the petroleum industry - A review
Authors: Abed S M , Abdurahman N H , Yunus R M , Abdulbari H A , Akbari S 
Published: December 2019

AbstractThe emulsions are formed during the production of crude oil, which is often accompanied by water. These emulsions are undesirable and should treat to remove the dispersed water and accompanying inorganic salts. so, many researchers have over the years focused to probe of the appropriate demulsification techniques in the petroleum sector in order to meet production and transportation requirements, and to reduce corrosion and catalyst poisoning and to maximize the overall profitability of the crude oil production. Therefore, this study presents an overview of the emulsions, formation, classification, Stability, and properties. practical demulsification techniques in the petroleum sector, including chemical, microwave irradiation, biological, thermal, membrane, electrical, and ultrasonic techniques for both oilfield and synthetic emulsions. Amongst these techniques, chemical demulsification has been the most widely applied and reported in the literature. Moreover, a more effective demulsification process could be attained by leveraging synergistic effects by combining one or more of these techniques
Third Consensus Development Conference on the Safety of Intravenous Drug Delivery Systems—2018
Authors: Gabay Michael , Hertig John B , Degnan Dan , Burger Maureen , Yaniv Angela , Mclaughlin Maureen , Lynn Moody Mary 
Published: December 2019

Abstract

Purpose
The Third Consensus Conference on the Safety of Intravenous Drug Delivery Systems was convened to evaluate the benefits and risks of available systems and assess ongoing threats to the safety of intravenous drug delivery.

Summary
The Third Consensus Conference on the Safety of Intravenous Drug Delivery Systems convened in Chicago, Illinois in November 2018. An expert panel of healthcare providers with experience in medication quality and safety, pharmacy and nursing operations, information technology, and/or sterile compounding led the conference. An experienced audience of approximately 30 healthcare leaders provided feedback to the panel via preconference survey and during the conference. Additionally, expert speakers presented on a range of issues, including the effects of drug shortages, the impact of standards and guidelines, and patient and administrator perspectives on the importance of intravenous drug delivery safety.

Conclusion
At the end of the conference, the expert panel concluded that manufacturer ready-to-use products remain the safest intravenous drug delivery system due to their many benefits and low overall risk profile. The panel identified various ongoing threats to the safety of intravenous drug delivery, with major concerns including the impact of drug shortages and lack of intravenous product standardization. Finally, the panel agreed upon a series of statements designed to advance the safety of intravenous drug delivery in healthcare institutions.
psSubpathway: a software package for flexible identification of phenotype-specific subpathways in cancer progression
Authors: Han Junwei , Han Xudong , Kong Qingfei , Cheng Liang 
Published: December 2019

AbstractSummarySubpathways, which are defined as local gene subregions within a biological pathway, have been reported to be associated with the occurrence and development of cancer. The recent subpathway identification tools generally identify differentially expressed subpathways between normal and cancer samples. psSubpathway is a novel systems biology R-based software package that enables flexible identification of phenotype-specific subpathways in a cancer dataset with multiple categories (such as multiple subtypes and developmental stages of cancer). The operation modes include extraction of subpathways from pathway networks, inference with subpathway activities in the context of gene expression data, identification of subtype-specific subpathways, identification of dynamic-changed subpathways associated with the cancer developmental stage and visualization of subpathway activities of samples in different phenotypes. Its capabilities enable psSubpathway to find specific abnormal subpathways in the datasets with multi-phenotype categories and to fill the gaps in the recent tools. psSubpathway may identify more specific biomarkers to facilitate the development of tailored treatment for patients with cancer.Availability and implementationThe package is implemented in R and available under GPL-2 license from the CRAN website (https://cran.r-project.org/web/packages/psSubpathway/).Supplementary informationSupplementary data are available at Bioinformatics online.