bluuebunny/crossref_metadata_2025_split huggingface dataset:
CaO from chicken eggshell supported on activated carbon and KOH (CaO/C/KOH) as catalyst for biodiesel production from off grade palm oil
Authors: Helwani Z , Zahrina I , Amraini S Z , Sianturi R I , Idroes G M , Muslem  , Idroes R 
Published: February 2021

Abstract
This study carried out the catalyst synthesis of calcium oxide (CaO) from chicken eggshells supported on activated carbon (C) and activated by KOH solution (CaO/C/KOH). The effects of variation of KOH concentration and the CaO:C mass ratio to catalyst performance were also investigated. The catalyst was used in the biodiesel production from off-grade palm oil. The catalyst with the highest catalytic activity was obtained at the CaO:C mass ratio of 12:6 and the KOH concentration of 25%. The transesterification that was performed under the conditions of the oil: methanol molar ratio of 1:10, the catalyst concentration of 1% -b oil, the reaction temperature of 65 °C, and reaction time of 3 hours produced a biodiesel yield of 85.74%. The catalyst characterization by using XRD, Hammet indicator, and Brunauer-Emmet-Teller (BET) showed the product was in the crystalline phase of CaO, K2CO3, K2O Ca(OH)2, and CaCO3, the base strength of H_> 12.2, and the specific surface area of 17.890 m2/g, respectively. The results showed that the KOH concentration in the catalyst activation process was directly proportional to the biodiesel yield. Several methyl esters such as methyl palmitate and methyl oleate were found in biodiesel through Gas Chromatography-Mass Spectrometry (GC-MS) analysis.
Modification of polyetersulfone (PES) membrane by using jernang (daemonorops draco blume) as a natural additive on humic acid fouling
Authors: Ambarita A C , Mulyati S , Arahman N , Suhendrayatna  , Rosnelly C M 
Published: February 2021

Abstract
This paper reports on the effect of adding Jernang additives on the performance of PES membranes. The membrane was made by mixing PES 16.5%, Jernang 1%, and NMP 82.5%, using the Non-solvent Induced Phase Separation (NIPS) method. The chemical group of Jernang has been studied in this paper. The addition of Jernang additives has succeeded in improving the performance of PES membranes. Pure water flux increases to 18.77 LMH from the initial flux of 1.66 LMH. Humic acid removal showed reasonable results up to 77.52%. Moreover, this membrane has good antifouling properties, but less stable under strong acid and alkaline solution.
The effect of KOH concentration and calcination temperature on the cement clinker catalyst activity in the transesterification of off-grade palm oil into biodiesel
Authors: Helwani Z , Negara W S , Zahrina I , Amraini S Z , Idroes G M , Muslem  , Idroes R 
Published: February 2021

Abstract
Cement clinker has been researched and has shown good performance as a heterogeneous catalyst in the biodiesel production process. The purpose of this study was to synthesize and characterize a cement clinker/KOH catalyst, to determine the effect of KOH concentration and calcination temperature on biodiesel yield. The catalysts were prepared by impregnation-calcination in the various KOH concentrations of 5, 10 and 15% and the calcination temperature of 500, 600 and 700 °C. The transesterification process was carried out for 3 hours with a mole ratio of oil: methanol of 4:1, reaction temperature of 65 °C, catalyst concentration of 6% wt oil, and stirring of 400 rpm. The results showed that the catalyst with the KOH concentration of 15% and the calcination temperature of 700 °C had the best performance with a biodiesel yield of 88.82%. The catalyst has a surface area of 9.622 m2/g, basicity of H_> 12.2 and a crystalline phase of 3CaO.SiO2, K2CO3, Ca(OH)2, and K2O. From the research, it is known that calcination temperature and KOH concentration in the impregnation process are directly proportional to the biodiesel yield.
Influence of EDTA on thermal properties of magnetic chitosan as an adsorbent of methylene blue
Authors: Rahmi  , Lelifajri  , Aulia C P , Fathana H 
Published: February 2021

Abstract
Magnetic chitosan has been functionalized with EDTA in order to improve its adsorption capacity for the removal of methylene blue from water. The adsorbent was prepared using chitosan, PEGDE as a crosslinking agent, iron oxide prepared from local iron sand, and EDTA. The addition of EDTA on the adsorbent preparation was performed with different contents of EDTA. Adsorption experiments showed the EDTA addition improved the adsorption capacity of the adsorbent. The optimal content of EDTA in the adsorbent was 0.005 g. DSC and TGA analysis showed that the decomposition temperature of the adsorbent increased by increasing the EDTA content in the adsorbent.
Fourier Transformed Infrared (FTIR) spectroscopy analysis of patchouli essential oils based on different geographical area in Aceh
Authors: Sufriadi E , Meilina H , Munawar A A , Idroes R 
Published: February 2021

Abstract
Studies on the quality difference between oils in various provinces have been conducted with varied results, especially between Acehnese Patchouli and Javanese Patchouli. However, studies on quality differences of Acehnese Patchouli based on geographic differences have never been carried out, thus, still leaving a big mystery in determining whether geographical differences such as coordinates and height from sea level produce different quality. The purpose of this study was to determine the effect of geographic location (coordinates and height of water MASL) of the patchouli cultivations on oil quality by conducting Principal Component Analysis (PCA) on the FTIR spectrum of patchouli oil from 3 different districts, namely South Aceh, Aceh Tamiang and South-West Aceh. The results indicate a water content difference as it is close to the O-H group wave number, which usually indicates the presence of Patchouli alcohol. The PCA analysis results show that there is a very significant difference between patchouli oil from South Aceh and Aceh Tamiang and South-West Aceh, caused by the height and patchouli variety difference. The PCA method validation is also quite reliable, which is proven by an explained variance plot.
Bedrock identification using resistivity method at campus II of Universitas Syiah Kuala, Banda Aceh
Authors: Syukri M , Taib A M , Fadhli Z 
Published: February 2021

Abstract
Research of resistivity method at campus II Universitas Syiah Kuala has been conducted with the SuperSting 68 instrument. There were three lines, each 330 meters long with a spacing of 6 meters. The purpose of the research was to determine the depth of the bedrock at campus II of Universitas Syiah Kuala. The results showed that there was a conductive and resistive coating with a resistivity value of between 2–1250 Ωm. The rock types were composed of water-saturated rocks, Tuffs sandstone, and andesite. The supposed bedrock rock is an andesite rock with a resistivity of 170-1250 Ωm with good density. In conclusion, the separation between the sediment and the bedrock was visible at a depth of up 10 meters across the measuring track.
Simulation of synchronization photovoltaic system and low voltage grid
Authors: Akbar M K , Syukriyadin S , Siregar R H , Syahrizal S 
Published: February 2021

Abstract
In this research, the synchronization between the PV system and grid designed with synchronization parameters are voltage, frequency, and phase angle difference. As a result, by using a synchronization system, the PV system and grid could be parallelized and supplying power into the load at the same time. The synchronization method used is zero-crossing detection because it is simple than the other method. The synchronization system consists of several components; voltage detector, frequency detector, phase angle detector, and switch controller which all of them are controlled using the Arduino board. The switch controller will be functioned based on input from the detector to do synchronization or parallelize the PV system and grid. Testing is done by simulating running in Proteus. Based on the result of the simulation, the system is successful to do synchronization between the PV system and grid, it can be observed from the grid and PV inverter voltage graph and current which is measured from load, grid, and inverter.
Soliton solution of stationary discrete nonlinear Schrödinger equation with the cubic-quintic nonlinearity
Authors: Qausar H , Ramli M , Munzir S , Syafwan M , Fadhiliani D 
Published: February 2021

AbstractThis research discusses stationary discrete nonlinear Schrödinger equation with cubic-quintic nonlinearity. This equation is interesting to study because it has a unique solution known as a soliton. This solution has a fixed profile and speed when propagating and in the context of applications in the optical field, soliton can also be engineered as a carrier of information that can propagate on media with very long distances without experiencing significant interference. This paper only focuses on on-site type soliton (soliton that peak in the middle on one site). The method of determining solution on stationary discrete nonlinear Schrödinger equation with cubic-quintic nonlinearity is divided into two cases. The first case for the value of parameterCis zero and the soliton solution is determined analytically. In this case the soliton solution can be stated explicitly, therefore the soliton solution will be displayed and also the boundaries on the parameters that make the solution in the form of on-site soliton. The second case for the value of parameterCis not zero and the soliton solution is determined using a numerical approach namely Trust Region Dogleg Method. In this case the soliton solution cannot be stated explicitly, therefore only boundaries of the parameters that make the solution in the form of on-site soliton will be displayed.
Seawater modification of lignocellulosic fibers: comparison of rice husk and rice straw fibers
Authors: Jiang Liangpeng , Du Peng , Wang Hao 
Published: February 2021

Abstract
Scientific investigations on the non-chemical modification of lignocellulosic fibers are important for engineers when they design green wood-plastic composites. Two types of lignocellulosic fibers, namely rice husk and rice straw fibers, were studied. The physicochemical and thermal properties of the fibers with and without seawater modification were compared. The results suggested that seawater modification improved the physicochemical and thermal properties of the fibers, and that it specifically increased the surface roughness, crystallinity, and pyrolysis temperature at 5% weight loss, and decreased the silicon, hemicellulose, and lignin content of the fibers. Compared with rice husk fibers, rice straw fibers exhibited a high growth ratio of crystallinity and pyrolysis temperature at 5% weight loss, and a high loss ratio of silicon. Seawater modification of rice husk and rice straw fibers could improve fiber–polymer compatibility.
Three Novel Genetic Variants in the FAM110D, CACNA1A, and NLRP12 Genes Are Associated With Susceptibility to Hypertension Among Dai People
Authors: Zhang Lin , Sun Yun , Zhang Xiaochao , Shan Xiyun , Li Jianmei , Yao Yao , Shu Yun , Lin Keqin , Huang Xiaoqin , Yang Zhaoqing , Chu Jiayou , Huang Lifan , Sun Hao 
Published: February 2021

Abstract

BACKGROUND
Although the genetic factors associated with hypertension remain unknown, genetic variations in genes related to ion channels, inflammation, and the cell cycle may affect susceptibility to hypertension. In the present study, the association between hypertension and 10 candidate single-nucleotide polymorphisms (SNPs) was evaluated among Chinese Dai people, who have a smaller gene pool than Han individuals.

METHODS
A total of 1,193 samples from Dai people were collected, including 488 with hypertension and 705 with normal blood pressure. Based on the preliminary results of whole-genome sequencing among pools of individuals (Pool-seq), 10 candidate SNPs in 6 genes (FAM110D, ADD1, RAG1, CACNA1C, CACNA1A, and NLRP12) were genotyped in the case and control groups by multiplex PCR for SNP genotyping with next-generation sequencing (MultiPCR-NGS). The relationship between hypertension and each candidate SNP was evaluated using the χ 2 test and multiple logistic regression analysis.

RESULTS
The χ 2 test showed that the allele frequencies of rs3748856 in FAM110D, rs139118504 in CACNA1A, and rs34436714 in NLRP12 were significantly different between the case and control groups (P &lt; 0.005). After adjusting for age, body mass index, total cholesterol, triglyceride, and low-density lipoprotein, logistic regression analyses revealed that the association between the 3 SNPs and hypertension among Dai people remained significant (P = 0.012, 2.71 × 10−4, and 0.017, respectively).

CONCLUSIONS
These findings indicate that there may be different molecular pathogeneses of hypertension among Dai people, which should be noted in future studies.
Acute and severe ribavirin-associated hyperuricemia and acute kidney injury: An underrecognized adverse effect
Authors: Sakran Razan , Frisch Avraham , Elias Adi , Sliman Hend , Ammuri Hanna , Kurnik Daniel 
Published: February 2021

Abstract

Purpose
To report a case of ribavirin-associated severe hyperuricemia in an immunocompromised patient treated for respiratory syncytial virus (RSV) infection.

Summary
A 21-year-old male with a past medical history of B-cell acute lymphoblastic leukemia was in full remission after allogenic bone marrow transplantation complicated with chronic graft-versus-host disease. He was hospitalized due to fever, malaise, and respiratory symptoms. A diagnosis of RSV upper respiratory tract infection complicated by secondary pneumonia was made, and oral ribavirin (600 mg in 3 divided doses daily) and intravenous levofloxacin (750 mg once daily) were initiated. On day 2 of the hospital admission, the patient’s uric acid levels had increased from a baseline of 4 to 6 mg/dL to 19.3 and 22.2 mg/dL after the fourth and fifth doses of ribavirin, respectively, and his serum creatinine steadily had increased from a baseline of 0.7 to 0.8 mg/dL to 1.6 mg/dL. Ribavirin was discontinued after the sixth dose, and a single dose of intravenous rasburicase (7.5 mg) was administered. On day 3, the patient’s serum uric and creatinine concentrations had decreased to 4.7 mg/dL and 1.1 mg/dL, respectively. He continued to recover on antibiotics and was discharged with normal uric acid and serum creatinine levels.

Conclusion
We report a case of severe hyperuricemia and acute kidney injury that developed early after initiation of ribavirin for RSV infection and suspected bacterial pneumonia in an immunocompromised patient without hepatitis C, requiring ribavirin discontinuation and rasburicase administration. To our knowledge, this is the first reported case of severe hyperuricemia in a patient treated with ribavirin for RSV infection rather than chronic hepatitis C. Clinicians should be aware of the possibility of acute and severe hyperuricemia following ribavirin administration.
Mitigating the risk of COVID-19 exposure by transitioning from clinic-based to home-based immune globulin infusion
Authors: Perreault Sarah , Schiffer Molly , Clinchy-Jarmoszko Virginia , Bocchetta Nicole , Barbarotta Lisa , Abdelghany Osama , Foss Francine , Huntington Scott , Seropian Stuart , Isufi Iris 
Published: February 2021

Abstract

Purpose
Intravenous immune globulin (IVIG) therapy is used in patients with hypogammaglobulinemia to lower the risk of infections. IVIG and subcutaneous IVIG (SCIG) therapy have been to shown to be safe and effective when administered as clinic-based infusions. Concern from both patients and providers for increased transmission of the coronavirus disease 2019 (COVID-19) virus to immunosuppressed patients with scheduled medical visits and procedures made it necessary for us to reassess our process of how we manage patient care in general and chronic clinic infusions in particular. Here we describe our experience of transitioning patients from clinic-based to home based IVIG and/or SCIG infusions to decrease the risk of COVID-19 exposure.

Methods
Criteria were developed to identify high-risk immunosuppressed patients who would be appropriate candidates for potential conversion to home based IVIG infusions. Data were collected via chart review, and cost analysis was performed using Medicare Part B reimbursement data. A patient outcome questionnaire was developed for administration through follow-up phone calls.

Results
From March to May 2020, 45 patients met criteria for home-based infusion, with 27 patients (60%) agreeing to home-based infusion. Posttransition patient outcomes assessment, conducted in 26 patients (96%), demonstrated good patient understanding of the home-based infusion process. No infusion-related complications were reported, and 24 patients (92%) had no concerns about receiving future IVIG and/or SCIG doses at home. No patient tested positive for COVID-19 during the study period. Clinic infusion visits decreased by 26.6 visits per month, resulting in a total of 106 hours of additional available infusion chair time per month and associated cost savings of $12,877.

Conclusion
Transition of clinic based to home based IVIG/SCIG infusion can be successfully done to decrease potential exposure during a pandemic in a high-risk immunosuppressed population, with no impact on patient satisfaction, adherence, or efficacy. The home-based infusion initiative was associated with a reduction in costs to patients and an increase in available chair time in the infusion clinic.
The Contribution of Occupation-Specific Factors to the Deaths of Despair, Massachusetts, 2005–2015
Authors: Hawkins Devan , Punnett Laura , Davis Letitia , Kriebel David 
Published: February 2021

Abstract

Objectives
In the USA, deaths from poisonings (especially opioids), suicides, and alcoholic liver disease, collectively referred to as ‘deaths of despair’, have been increasing rapidly over the past two decades. The risk of deaths from these causes is known to be higher among certain occupations. It may be that specific exposures and experiences of workers in these occupations explain these differences in risk. This study sought to determine whether differences in the risk of deaths of despair were associated with rate of occupational injuries and illnesses, job insecurity, and temporal changes in employment in non-standard work arrangements.

Methods
Usual occupation information was collected from death certificates of Massachusetts residents aged 16–64 with relevant causes of death between 2005 and 2015. These data were combined with occupation-level data about occupational injuries and illnesses, job insecurity, and non-standard work arrangements. We calculated occupation-specific mortality rates for deaths of despair, categorized by occupational injury and illnesses rates and job insecurity. We calculated trends in mortality according to changes in non-standard work arrangements.

Results
Workers in occupations with higher injury and illnesses rates and more job insecurity had higher rates of deaths of despair, especially opioid-related deaths. Rates of deaths of despair increased most rapidly for occupations with increasing prevalence of workers employed in non-standard work arrangements.

Conclusions
The findings suggest occupational factors that may contribute to the risk of deaths of despair. Future studies should examine these factors with individual-level data. In the meantime, efforts should be made to address these factors, which also represent known or suspected hazards for other adverse health outcomes.
Resonance as an Applied Predictor of Cross-Cultural Interaction: Constructional Priming in Mandarin and American English Interaction
Authors: Tantucci Vittorio , Wang Aiqing 
Published: February 2021

AbstractIn Dialogic syntax (cf. Du Bois 2014; Tantucci et al. 2018), naturalistic interaction is inherently grounded in resonance, viz. the catalytic activation of affinities across turns (Du Bois and Giora 2014). Resonance occurs dynamically when interlocutors creatively coconstruct utterances that are formally and phonetically similar to the utterance of a prior speaker. In this study, we argue that such similarity can inform the machine learning prediction of linguistic and cross-cultural diversity. We compared two sets of 1,000 exchanges involving (dis)-agreement from the two balanced Callhome corpora of naturalistic interaction in Mandarin Chinese and American English. We found a correlation of overt use of pragmatic markers with resonance, indicating that priming does not occur as an exclusively implicit mechanism (as it is commonly held in the experimental literature e.g. Bock 1986; Bock et al. 2007), but naturalistically underpins dialogic engagement and cooperation among interactants. We fitted a mixed effects linear regression and a hierarchical clustering model to show that resonance occurs formally and functionally in different ways from one language to another. The applied results of this study can lead to a novel turn in AI research of conversational interfaces (McTear et al. 2016; Klopfenstein et al. 2017), as they reveal the fundamental role played cross-linguistically by resonance as a form of engagement of human-to-human interaction and the importance to address this mechanism in machine-to-human communication.
Tandem repeat interval pattern identifies animal taxa
Authors: Bhattacharyya Balaram , Mitra Uddalak , Bhattacharyya Ramkishore 
Published: February 2021

Abstract

Motivation
We discover that maximality of information content among intervals of Tandem Repeats (TRs) in animal genome segregates over taxa such that taxa identification becomes swift and accurate. Successive TRs of a motif occur at intervals over the sequence, forming a trail of TRs of the motif across the genome. We present a method, Tandem Repeat Information Mining (TRIM), that mines 4k number of TR trails of all k length motifs from a whole genome sequence and extracts the information content within intervals of the trails. TRIM vector formed from the ordered set of interval entropies becomes instrumental for genome segregation.

Results
Reconstruction of correct phylogeny for animals from whole genome sequences proves precision of TRIM. Identification of animal taxa by TRIM vector upon feature selection is the most significant achievement. These suggest Tandem Repeat Interval Pattern (TRIP) is a taxa-specific constitutional characteristic in animal genome.

Availabilityand implementation
Source and executable code of TRIM along with usage manual are made available at https://github.com/BB-BiG/TRIM.

Supplementary information
Supplementary data are available at Bioinformatics online.