bluuebunny/crossref_metadata_2025_split huggingface dataset:
Warehouse management model using FEFO, 5s, and chaotic storage to improve product loading times in small- and medium-sized non-metallic mining companies
Authors: Espinoza-Camino P , Macassi-Jaurequi I , Raymundo-Ibañez C , Dominguez F 
Published: April 2020

Abstract
This article addresses one of the main problems faced by small- and medium-sized business in the non-metallic mining sector in Peru. These companies own warehouses and face the major problem of failing to deliver orders correctly and in a timely manner. This problem usually occurs when the business grows from a small- to medium-sized company in a short span of time; this situation leads to new processes within warehouses that are mostly not standardized. Besides, facilities are no longer optimal in space and the workers are not properly trained. The case study shows that the orders were not delivered on time due to factors such as lack of product identification, although the products have an expiration date and a warehouse without signaling and surrounded by traffic. To tackle this situation, a labeling process has been designed for the products, an adequate distribution technique is used in the warehouse through a newly designed warehouse layout, and a First Expired, First Out system has been implemented. Similarly, the design is accompanied by the 5s tool to provide a basis for order and continuous improvement. The results show that deliveries with delays were reduced from 38% to 10%. These results show that companies can grow rapidly and maintain quality of service through orderly management.
Production management model through MPS and line balancing to reduce the non-fulfillment of orders in lingerie clothing MSEs in Peru
Authors: Flores-Andrade K , Guardia-Miranda R , Castro-Rangel P , Raymundo-Ibañez C , Perez M 
Published: April 2020

Abstract
The focus of this research is to establish control and planning management in the sewing production process of lingerie clothing to better prepare companies for demand growth. The lack of improvement tools in this sector, the lack of staff training and a lack of quality culture has led to companies, especially MYPES, not being able to meet the established delivery times and non-fulfillment of orders with the customers, which represents 80% of dissatisfied orders due to the limited production capacity and non-productive time in the plant. This problem is due to limited production capacity, deficient production planning, and lack of materials. In order to solve this problem, industrial engineering tools were used. The application of these tools improved production from 79% to 95%.
Analysis of electricity energy savings with Grid-Tie system connected to utility grid
Authors: Away Y , Adria A , Syahrizal  , Rizal M S , Walidainy H 
Published: April 2020

Abstract
The microgrid consists of at least one energy source that is connected to a load in a relatively small area. In practice, microgrid are divided into two types, off-grid systems or often said to be standalone systems and on-grid systems that are connected to utility networks. The use of renewable energy sources, such as photovoltaic, has become an alternative energy for the problem of electricity energy deficits. This research examines the possibility of saving power consumption from the network using a grid-tie inverter (GTI) power converter in a microgrid configuration so synchronization can be made between renewable energy systems and utility networks. The integration of photovoltaic energy resources with the grid system will increase the value of electricity capacity while reducing the use of fossil fuels, as well as a positive impact where the use of renewable energy can reduce energy use and bills to be paid. Integration of grid tie testing carried out without a load can convert the power generated by almost 90% distributed in the utility network, while testing with a load using a grid tie system, can save power up to 70% of the energy supplied by the utility network.
User requirements elicitation in web-based Participatory Geographic Information System interface design
Authors: Sofyan Z , Zulkifli  , Bustami  
Published: April 2020

Abstract
This ongoing work is aimed to collect a set of specific user requirements to develop a participatory web-based Geographic Information System using the User Centered Design approach. By using several techniques of requirement specification as the part of the User Centered Design such as observation of user behavior, interview session and paper prototyping design for testing user interaction, this initial stage in the development of the application could identify the important features to increase the usability of the application. These key features needed by the user are divided into three categories; the type of available maps, the data input features, and the data management features. The categories founded will help the system developer prioritize the important features to create an application to support spatial-based planning and to support the coordination between government agencies in Banda Aceh Municipality.
Implementation of SMS Gateway in the Flood Notification System using Raspberry Pi
Authors: Satria D , Yana S , Munadi R , Syahreza S , Yusibani E , Hidayat T 
Published: April 2020

Abstract
Flood disaster has become a national disaster that often occurs in the world today. Indonesia is one country that has a lot of flooding. The cause of the flooding is human error in environmental care. To overcome floods in the short term is to build a flood disaster mitigation system to anticipate more victims. This study aims to create an SMS gateway-based flood notification system. This mitigation system was built using ultrasonic sensors and rain sensors as input components, Raspberry Pi mini-computers as processors and GSM modems as outputs. This research resulted in a prototype of a flood notification system that can send SMS when floods occur. Tests have been carried out by varying the height of the water, which is between 0cm to 20cm. SMS will be sent to users when the water level is at 5cm, 10cm, 15cm, and 20cm. In prototype testing used a scale between 0 cm to 20 cm. From several tests conducted, the system has been able to send SMS to users. This research has provided innovations in the field of flood disaster mitigation using GSM communication systems and Raspberry Pi-based data processing.
Structural style of the North Sumatra basin, offshore Aceh
Authors: Muchlis  , Elders Chris 
Published: April 2020

Abstract
The Offshore North Sumatra Basin is an underexplored basin. Only a limited amount of exploration has occurred in the past resulting in the discovery of one economic field that is currently producing, a number of uneconomic discoveries and some unsuccessful wells. This is reflected in limited geological studies of the area. This paper demonstrates the importance of N-S trending faults associated with Basin formation in the Oligocene, continued fault activity in the late Oligocene and both compressional and extensional reactivation in the Miocene.
Application of precast foamed concrete panels for the structural deck of green roof system
Authors: Munir A , Muslimsyah  , Afifuddin M , Mahlil  
Published: April 2020

Abstract
Rapid development in urban areas has caused many environmental problems, one of which is the phenomenon of urban heat island (UHI) which results in excessive energy usage. The building sector is the most responsible for energy use, which accounts for 40% of total energy consumption. A green roof is a sustainable solution to solve the problems related to urban heat islands. To reduce more structural self-weight, lightweight foamed concrete could be applied as a roof construction material. This paper presents experimental results on the structural behavior of a U-shape precast panel made of lightweight foamed. Three foamed concrete panels in the U-shaped form having different width dimensions of 200mm, 400mm and 600mm with a clear span of 1800 mm were cast and tested until failure under a double mid-span concentrated load. The panels were considered as a simple U-shaped beam filled with a growing medium for a green roof system. This result shows a potential use of foamed concrete for roof deck structure integrated with a green roof system. The U-shaped panel with a width of 400mm is the optimal form of the three tested specimens for the structural roof deck of the green roof system.
Effect of Sodium Dodecyl Sulfate (SDS) on Polysulfone/Zeolite membrane for the removal of copper ions
Authors: Hamid S A , Ismail S 
Published: April 2020

Abstract
The influence of anionic surfactant, Sodium Dodecyl Sulfate (SDS) on Polysulfone (PSf) polymer impregnated with zeolite adsorbent for removing copper ions from aqueous solution is the main focus of this paper. The flat sheet membrane was prepared via blending and phase inversion methods. Different amount of SDS (1 wt%, 3 wt%, 5 wt%, and 7 wt%) were added into the polymer casting solution. Batch adsorption and continuous filtration studies were carried out to study the effect of SDS dosage on PSf/zeolite membrane for the removal of copper ion. The membrane characterizations such as pure water flux (PWF), water contact angle (WCA) and mean pore size were investigated. From the study, it was found that the presence of a high amount of SDS could enhance adsorption efficiency (99 %) by shortening the equilibrium time with adsorption of 9.4 mg/g. Filtration study indicates that a lower amount of SDS (1 wt%) results in high rejection value (70 %) of copper metal ions from the solution. Besides, as the amount of SDS increase, the PWF increases from 0 L/m2h to 100 L/m2h, WCA decreases from 94.8° to 46.4° and the pore size of membrane increases from 0.082 μm to 2.530 μm.
Preparing of Carbon Nanodots from Binchotan Carbon by Electrochemically Sonification and Dialysis
Authors: Syarif Nirwan , Rohendi Dedi , Haryati Sri , Tin Lee Chew 
Published: April 2020

Abstract
This paper reports the research of preparing an aqueous solution of binchotan carbon electrochemically and followed by its purification through sonification and dialysis. Binchotan rod and platinum plate were used as anode and cathode. The electrodes were placed on both sides of beaker glass that contained 200 ml of 14 M sulphuric acid, oxalic acid and phosphoric acid solutions as electrolytes, respectively. The potential between anode and cathode was 14 V. The solution was moved from beaker glass after 24 hours, filtered to produce a solid product for further examinations. The solid was washed with distilled water until pH 7, dried in 100 °C ovens. Two types of materials were examined, i.e. the product before and after the purification. The solid was then characterized by its morphology, crystallography, and surface functional groups by SEM, XRD, and FT-IR. The morphology of the binchotan after running the electro-oxidation process generally were aggregates and dots. Both shapes were reduced in size after purification. The diffractogram showed a significant change at 2θ=14°-44° meaning that the purification process changes the crystallography of carbon. The FTIR showed the presence of a functional group of aromatic, carboxylic, alkene, and alcohol on the surface of the carbon.
Grouping of Retention Index on Gas Chromatography using Cluster Analysis
Authors: Husna I , Rusyana A , Muslem  , Idroes G M , Suhendraand R , Idroes R 
Published: April 2020

Abstract
Retention index data consisting of 146 compounds commonly found in fuels are used to analyze the level of a psycho-chemical property similarity with cluster analysis methods. Cluster analysis is applied based on the temperature and column dependencies. The results show that the retention index was divided into four groups. The first group consists of benzene and cycloalkanes. The retention index of the compound shows high-temperature dependence and dependence on small column polarity. The second group consists of aromatic compounds and compounds that contain N, S, O. The retention index of these compounds shows dependence on temperature and polarity of large columns. The third group consists of aromatic compounds and hydrocarbons. The retention index of hydrocarbon compounds shows temperature dependence smaller than N, S, O. compounds and also the dependence on small column polarity. And the fourth group consists of only two compounds namely n-Hentriacontane and chrysene. The retention index of the two compounds shows a significant temperature dependence.
Modeling sequences with quantum states: a look under the hood
Authors: Bradley Tai-Danae , Stoudenmire E M , Terilla John 
Published: April 2020

Abstract
Classical probability distributions on sets of sequences can be modeled using quantum states. Here, we do so with a quantum state that is pure and entangled. Because it is entangled, the reduced densities that describe subsystems also carry information about the complementary subsystem. This is in contrast to the classical marginal distributions on a subsystem in which information about the complementary system has been integrated out and lost. A training algorithm based on the density matrix renormalization group (DMRG) procedure uses the extra information contained in the reduced densities and organizes it into a tensor network model. An understanding of the extra information contained in the reduced densities allow us to examine the mechanics of this DMRG algorithm and study the generalization error of the resulting model. As an illustration, we work with the even-parity dataset and produce an estimate for the generalization error as a function of the fraction of the dataset used in training.
Antibiotic Stewardship Implementation and Antibiotic Use at Hospitals With and Without On-site Infectious Disease Specialists
Authors: Livorsi Daniel J , Nair Rajeshwari , Lund Brian C , Alexander Bruce , Beck Brice F , Goto Michihiko , Ohl Michael , Vaughan-Sarrazin Mary S , Goetz Matthew B , Perencevich Eli N 
Published: April 2020

Abstract

Background
Many US hospitals lack infectious disease (ID) specialists, which may hinder antibiotic stewardship efforts. We sought to compare patient-level antibiotic exposure at Veterans Health Administration (VHA) hospitals with and without an on-site ID specialist, defined as an ID physician and/or ID pharmacist.

Methods
This retrospective VHA cohort included all acute-care patient admissions during 2016. A mandatory survey was used to identify hospitals’ antibiotic stewardship processes and their access to an on-site ID specialist. Antibiotic use was quantified as days of therapy per days present and categorized based on National Healthcare Safety Network definitions. A negative binomial regression model with risk adjustment was used to determine the association between presence of an on-site ID specialist and antibiotic use at the level of patient admissions.

Results
Eighteen of 122 (14.8%) hospitals lacked an on-site ID specialist; there were 525 451 (95.8%) admissions at ID hospitals and 23 007 (4.2%) at non-ID sites. In the adjusted analysis, presence of an ID specialist was associated with lower total inpatient antibacterial use (odds ratio, 0.92; 95% confidence interval, .85–.99). Presence of an ID specialist was also associated with lower use of broad-spectrum antibacterials (0.61; .54–.70) and higher narrow-spectrum β-lactam use (1.43; 1.22–1.67). Total antibacterial exposure (inpatient plus postdischarge) was lower among patients at ID versus non-ID sites (0.92; .86–.99).

Conclusions
Patients at hospitals with an ID specialist received antibiotics in a way more consistent with stewardship principles. The presence of an ID specialist may be important to effective antibiotic stewardship.
Polymerase Chain Reaction Assays Reverted to Positive in 25 Discharged Patients With COVID-19
Authors: Yuan Jing , Kou Shanglong , Liang Yanhua , Zeng Jianfeng , Pan Yanchao , Liu Lei 
Published: April 2020

Abstract
We report the observation that 14.5% of COVID-19 patients had positive RT-PCR testing again after discharge. We describe correlations between laboratory parameters and treatment duration (P = .002) and time to virus recrudescence (P = .008), suggesting the need for additional measures to confirm illness resolution in COVID-19 patients.
Influenza Vaccine Effectiveness in Inpatient and Outpatient Settings in the United States, 2015–2018
Authors: Tenforde Mark W , Chung Jessie , Smith Emily R , Talbot H Keipp , Trabue Christopher H , Zimmerman Richard K , Silveira Fernanda P , Gaglani Manjusha , Murthy Kempapura , Monto Arnold S , Martin Emily T , McLean Huong Q , Belongia Edward A , Jackson Lisa A , Jackson Michael L , Ferdinands Jill M , Flannery Brendan , Patel Manish M 
Published: April 2020

Abstract

Background
Demonstration of influenza vaccine effectiveness (VE) against hospitalized illness in addition to milder outpatient illness may strengthen vaccination messaging. Our objective was to compare patient characteristics and VE between United States (US) inpatient and outpatient VE networks.

Methods
We tested adults with acute respiratory illness (ARI) for influenza within 1 outpatient-based and 1 hospital-based VE network from 2015 through 2018. We compared age, sex, and high-risk conditions. The test-negative design was used to compare vaccination odds in influenza-positive cases vs influenza-negative controls. We estimated VE using logistic regression adjusting for site, age, sex, race/ethnicity, peak influenza activity, time to testing from, season (overall VE), and underlying conditions. VE differences (ΔVE) were assessed with 95% confidence intervals (CIs) determined through bootstrapping with significance defined as excluding the null.

Results
The networks enrolled 14 573 (4144 influenza-positive) outpatients and 6769 (1452 influenza-positive) inpatients. Inpatients were older (median, 62 years vs 49 years) and had more high-risk conditions (median, 4 vs 1). Overall VE across seasons was 31% (95% CI, 26%–37%) among outpatients and 36% (95% CI, 27%–44%) among inpatients. Strain-specific VE (95% CI) among outpatients vs inpatients was 37% (25%–47%) vs 53% (37%–64%) against H1N1pdm09; 19% (9%–27%) vs 23% (8%–35%) against H3N2; and 46% (38%–53%) vs 46% (31%–58%) against B viruses. ΔVE was not significant for any comparison across all sites.

Conclusions
Inpatients and outpatients with ARI represent distinct populations. Despite comparatively poor health among inpatients, influenza vaccination was effective in preventing influenza-associated hospitalizations.
Segmental Histological Normalisation Occurs in Ulcerative Colitis but Does Not Improve Clinical Outcomes
Authors: Christensen Britt , Hanauer Stephen B , Gibson Peter R , Turner Jerrold R , Hart John , Rubin David T 
Published: April 2020

Abstract

Background and Aims
Complete histological normalisation and reduction of inflammation severity in patients with ulcerative colitis are associated with improved clinical outcomes, but the clinical significance of normalisation of only segments of previously affected bowel is not known. We examined the prevalence, pattern, predictors, and clinical outcomes associated with segmental histological normalisation in in patients with ulcerative colitis.

Methods
Medical records of patients with confirmed ulcerative colitis and more than one colonoscopy were sought. Segmental histological normalisation was defined as histological normalisation of a bowel segment [rectum, left-sided or right-sided colon] that had previous evidence of chronic histological injury. We assessed the variables influencing these findings and whether segmental normalisation was associated with improved clinical outcomes.

Results
Of 646 patients, 32% had segmental and 10% complete histological normalisaton when compared with their maximal disease extent. Most [88%] had segmental normalisation in a proximal-to-distal direction. Others had distal-to-proximal or patchy normalisation. On multivariate analysis, only current smoking [p = 0.040] and age of diagnosis ≤16 years [p = 0.028] predicted segmental histological normalisation. Of 310 who were in clinical remission at initial colonoscopy, 77 [25%] experienced clinical relapse after median 1.3 [range 0.06–7.52] years. Only complete histological normalisation of the bowel was associated with improved relapse-free survival (hazard ratio [HR] 0.23; 95% confidence interval [CI] 0.08–0.68; p = 0.008].

Conclusions
Segmental histological normalisation occurs in 32% of patients with ulcerative colitis and is increased in those who smoke or were diagnosed at younger age. Unlike complete histological normalisation, segmental normalisation does not signal improved clinical outcomes.
Interleukin-34 Stimulates Gut Fibroblasts to Produce Collagen Synthesis
Authors: Franzè Eleonora , Dinallo Vincenzo , Laudisi Federica , Di Grazia Antonio , Di Fusco Davide , Colantoni Alfredo , Ortenzi Angela , Giuffrida Paolo , Di Carlo Sara , Sica Giuseppe S , Di Sabatino Antonio , Monteleone Giovanni 
Published: April 2020

AbstractBackground and AimThe mechanisms underlying the formation of intestinal fibrostrictures [FS] in Crohn’s disease [CD] are not fully understood, but activation of fibroblasts and excessive collagen deposition are supposed to contribute to the development of FS. Here we investigated whether interleukin-34 [IL-34], a cytokine that is over-produced in CD, regulates collagen production by gut fibroblastsMethodsIL-34 and its receptor macrophage colony-stimulating factor receptor 1 [M-CSFR-1] were evaluated in inflammatory [I], FS CD, and control [CTR] ileal mucosal samples by real-time polymerase chain reaction [RT-PCR], western blotting, and immunohistochemistry. IL-34 and M-CSFR-1 expression was evaluated in normal and FS CD fibroblasts. Control fibroblasts were stimulated with IL-34 in the presence or absence of a MAP kinase p38 inhibitor, and FS CD fibroblasts were cultured with a specific IL-34 antisense oligonucleotide, and collagen production was evaluated by RT-PCR, western blotting, and Sircol assay. The effect of IL-34 on the wound healing capacity of fibroblasts was evaluated by scratch test.ResultsWe showed enhanced M-CSFR-1 and IL-34 RNA and protein expression in FS CD mucosal samples as compared with ICD and CTR samples. Immunohistochemical analysis showed that stromal cells were positive for M-CSFR-1 and IL-34. Enhanced M-CSFR-1 and IL-34 RNA and protein expression was seen in FS CD fibroblasts as compared with CTR. Stimulation of control fibroblasts with IL-34 enhanced COL1A1 and COL3A1 expression and secretion of collagen through a p38 MAP kinase-dependent mechanism, and wound healing. IL-34 knockdown in FS CD fibroblasts was associated with reduced collagen production and wound repair.ConclusionsData indicate a prominent role of IL-34 in the control of intestinal fibrogenesis.