bluuebunny/crossref_metadata_2025 huggingface dataset:
Power Distribution Analysis For Electrical Usage In Province Area Using Olap (Online Analytical Processing)
Authors: Samsinar Riza , Endro Suseno Jatmiko , Edi Widodo Catur
Published: February 2018

The distribution network is the closest power grid to the customer Electric service providers such as PT. PLN. The dispatching center of power grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid operating management. The technique of data warehousing online analytical processing has been used to manage and analysis the great capacity of data. Specific methods for online analytics information systems resulting from data warehouse processing with OLAP are chart and query reporting. The information in the form of chart reporting consists of the load distribution chart based on the repetition of time, distribution chart on the area, the substation region chart and the electric load usage chart. The results of the OLAP process show the development of electric load distribution, as well as the analysis of information on the load of electric power consumption and become an alternative in presenting information related to peak load.
Rule Based System for Medicine Inventory Control Using Radio Frequency Identification (RFID)
Authors: Ardhyanti Mita Nugraha Joanna , Suryono Suryono , Endro Suseno dan Jatmiko
Published: February 2018

Rule based system is very efficient to ensure stock of drug to remain available by utilizing Radio Frequency Identification (RFID) as input means automatically. This method can ensure the stock of drugs to remain available by analyzing the needs of drug users. The research data was the amount of drug usage in hospital for 1 year. The data was processed by using ABC classification to determine the drug with fast, medium and slow movement. In each classification result, rule based algorithm was given for determination of safety stock and Reorder Point (ROP). This research yielded safety stock and ROP values that vary depending on the class of each drug. Validation is done by comparing the calculation of safety stock and reorder point both manually and by system, then, it was found that the mean deviation value at safety stock was 0,03 and and ROP was 0,08.
Comparison of Genetic Algorithm and Hill Climbing for Shortest Path Optimization Mapping
Authors: Fronita Mona , Gernowo Rahmat , Gunawan Vincencius
Published: February 2018

Traveling Salesman Problem (TSP) is an optimization to find the shortest path to reach several destinations in one trip without passing through the same city and back again to the early departure city, the process is applied to the delivery systems. This comparison is done using two methods, namely optimization genetic algorithm and hill climbing. Hill Climbing works by directly selecting a new path that is exchanged with the neighbour’s to get the track distance smaller than the previous track, without testing. Genetic algorithms depend on the input parameters, they are the number of population, the probability of crossover, mutation probability and the number of generations. To simplify the process of determining the shortest path supported by the development of software that uses the google map API. Tests carried out as much as 20 times with the number of city 8, 16, 24 and 32 to see which method is optimal in terms of distance and time computation. Based on experiments conducted with a number of cities 3, 4, 5 and 6 producing the same value and optimal distance for the genetic algorithm and hill climbing, the value of this distance begins to differ with the number of city 7. The overall results shows that these tests, hill climbing are more optimal to number of small cities and the number of cities over 30 optimized using genetic algorithms.
Information Management of Web Application Based Environmental Performance Management in Concentrating Division of PTFI
Authors: Susanto Arif , Mulyono Nur Budi
Published: February 2018

The changes of environmental management system standards into the latest version, i.e. ISO 14001:2015, may cause a change on a data and information need in decision making and achieving the objectives in the organization coverage. Information management is the organization’s responsibility to ensure that effectiveness and efficiency start from its creating, storing, processing and distribution processes to support operations and effective decision making activity in environmental performance management. The objective of this research was to set up an information management program and to adopt the technology as the supporting component of the program which was done by PTFI Concentrating Division so that it could be in line with the desirable organization objective in environmental management based on ISO 14001:2015 environmental management system standards. Materials and methods used covered technical aspects in information management, i.e. with web-based application development by using usage centered design. The result of this research showed that the use of Single Sign On gave ease to its user to interact further on the use of the environmental management system. Developing a web-based through creating entity relationship diagram (ERD) and information extraction by conducting information extraction which focuses on attributes, keys, determination of constraints. While creating ERD is obtained from relational database scheme from a number of database from environmental performances in Concentrating Division.
The Role of Spatial Analysis in Detecting the Consequence of the Factory Sites : Case Study of Assalaya Factory-Sudan
Authors: Eldin Khair Amar Sharaf , Purwanto  , RyaSunoko Henna , Abdullah Omer Adam
Published: February 2018

Spatial analysis is considered as one of the most important science for identifying the most appropriate site for industrialization and also to alleviate the environmental ramifications caused by factories. This study aims at analyzing the Assalaya sugarcane factory site by the use of spatial analysis to determine whether it has ramification on the White Nile River. The methodology employed for this study is Global Position System (GPS) to identify the coordinate system of the study phenomena and other relative factors. The study will also make use Geographical Information System (GIS) to implement the spatial analysis. Satellite data (LandsatDem-Digital Elevation Model) will be considered for the study area and factory in identifying the consequences by analyzing the location of the factory through several features such as hydrological, contour line and geological analysis. Data analysis reveals that the factory site is inappropriate and according to observation on the ground it has consequences on the White Nile River. Based on the finding, the study recommended some suggestions to avoid the aftermath of any factory in general. We have to take advantage of this new technological method to aid in selecting most apt locations for industries that will create an ambient environment.
Integration of Remote Sensing Technology Using Sentinel-2A Satellite images For Fertilization and Water Pollution Analysis in Estuaries Inlet of Semarang Eastern Flood Canal
Authors: Subiyanto Sawitri , Ramadhanis Zainab , Hafidh Baktiar Aditya
Published: February 2018

One of the waters that has been contaminated by industrial waste and domestic waste is the waters in estuaries inlet of Semarang Eastern Flood Canal which is the estuary of the river system, which passes through the eastern city of Semarang which is dense with residential and industrial. So it is necessary to have information about the assessment of water quality in Estuaries Inlet of Semarang Eastern Flood Canal. Remote sensing technology can analyze the results of recording the spectral characteristics of water with water quality parameters. One of the parameters for assessing water quality is Chlorophyll-a and Total Suspended Solid, can be estimated through remote sensing technology using multispectral Sentinel-2A Satellite images. In this research there are 3 algorithms that will be used in determining the content of chlorophyll a, and for determining TSS. Image accuracy test is done to find out how far the image can give information about Chlorophyll-a and TSS in the waters. The results of the image accuracy test will be compared with the value of chlorophyll-a and TSS that have been tested through laboratory analysis. The result of this research is the distribution map of chlorophyll-a and TSS content in the waters.
Impact of the formaldehyde concentration in the air on the sink effect of a coating material
Authors: Tiffonnet Anne-Lise , Tourreilles Céline , Duforestel Thierry
Published: February 2018

This study aims to characterize, from a numerical modelling, the sorption behaviour of a material (a plasticised flooring material) when it is exposed to a pollutant commonly encountered in indoor environments (formaldehyde). It deals with the influence of the pollutant concentration in the room air on the sink effect of the material. The numerical simulations are based on a macroscopic modelling using experimental test results obtained elsewhere. The consequences on the room inertia are also discussed, and analogies between mass transfer and heat transfer are highlighted.
A Numerical Analysis of the Air Distribution System for the Ventilation of the Crew Quarters on board of the International Space Station
Authors: Bode Florin , Nastase Ilinca , Croitoru Cristiana Verona , Sandu Mihnea , Dogeanu Angel
Published: February 2018

Quality of life on the International Space Station (ISS) has become more and more important, since the time spent by astronauts outside the terrestrial atmosphere has increased in the last years. The actual concept for the Crew Quarters (CQ) have demonstrated the possibility of a personal space for sleep and free time activities in which the noise levels are lower, but not enough, compared to the noisy ISS isle way. However, there are several issues that needs to be improved to increase the performance of CQ. Our project QUEST is intended to propose a new concept of CQ in which we will correct these issues, like the noise levels will be lower, more space for astronaut, increased thermal comfort, reduce the CQ total weight, higher efficiency for the air distribution, personalized ventilation system in CQ for the crew members in order to remove CO2 from the breathing zone. This paper presents a CFD study in which we are comparing the actual and a proposed ventilation solution for introducing the air in CQ. A preliminary numerical model of the present configuration of the air distribution system of the Crew Quarters on board of the ISS, shows the need for an improved air distribution inside these enclosures. Lower velocity values at the inlet diffuser, distributed over a larger surface, as well as diffusers with improved induction would appear to be a better choice. This was confirmed through the development of a new model including linear diffusers with a larger discharge surface. In this new configuration, the regions of possible draught are dramatically reduced. The overall distributions of the velocity magnitudes displaying more uniform, lower values, in the same time with more uniform temperatures. All these observations allow us to consider a better mixing of the air inside the enclosure.
Evaluation of indoor temperature for various building envelopes damaged
Authors: Petrenko Viktor , Dikarev Kostiantyn , Volchok Denys , Kuzmenko Oleksandra
Published: February 2018

The purpose of this paper is to represent inner air temperature calculation algorithm provided that interior space is formed by several building envelopes which transmit thermal losses. The chosen external wall includes an area with damaged structural layers. We examine one-dimensional thermal transfer between hot (inner) and cold (outside) space in steady-state conditions. The derived equation allows calculating the estimated inner temperature of the air taking into consideration the various combination of building envelopes on condition that one of them is damaged.
Study of the dE/dx resolution of a GEM Readout Chamber prototype for the upgrade of the ALICE TPC
Authors: Mathis Andreas
Published: February 2018

The ALICE Collaboration is planning a major upgrade of its central barrel detectors to be able to cope with the increased LHC luminosity beyond 2020. For the TPC, this implies a replacement of the currently used gated MWPCs (Multi-Wire Proportional Chamber) by GEM (Gas Electron Multiplier) based readout chambers. In order to prove, that the present particle identification capabilities via measurement of the specific energy loss are retained after the upgrade, a prototype of the ALICE IROC (Inner Readout Chamber) has been evaluated in a test beam campaign at the CERN PS. The dE/dx resolution of the prototype has been proven to be fully compatible with the current MWPCs.
Micromegas for dark matter searches: CAST/IAXO & TREX-DM experiments
Authors: Garza J. G. , Aune S. , Aznar F. , Castel J. F. , Cebrián S. , Dafni T. , Ferrer-Ribas E. , Galán J. , García J. A. , Giomataris I. , Iguaz F.J. , Irastorza I.G. , Luzón G. , Mirallas H. , Papaevangelou T. , Peiró A. , Tomás A. , Vafeiadis T.
Published: February 2018

The most compelling candidates for Dark Matter to day are WIMPs and axions. The applicability of gasesous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) to the search of these particles is explored within this work. Both particles would produce an extremely low rate at very low energies in particle detectors. Micromegas detectors can provide both low background rates and low energy threshold, due to the high granularity, radiopurity and uniformity of the readout. Small (few cm wide) Micromegas detectors are used to image the axion-induced x-ray signal expected in the CERN Axion Solar Telescope (CAST) experiment. We show the background levels obtained in CAST and the prospects to further reduce them to the values required by the Internation Axion Observatory (IAXO). We also present TREX-DM, a scaled-up version of the Micromegas used in axion research, but this time dedicated to the low-mass WIMP detection. TREX-DM is a high-pressure Micromegas-based TPC designed to host a few hundreds of grams of light nuclei (argon or neon) with energy thresholds potentially at the level of 100 eV. The detector is described in detail, as well as the results of the commissioning and characterization phase on surface. Besides, the background model of TREX-DM is presented, along with the anticipated sensitivity of this search, which could go beyond current experimental limits.
A beam monitor based on MPGD detectors for hadron therapy
Authors: Altieri P. R. , Di Benedetto D. , Galetta G. , Intonti R. A. , Mercadante A. , Nuzzo S. , Verwilligen P.
Published: February 2018

Remarkable scientific and technological progress during the last years has led to the construction of accelerator based facilities dedicated to hadron therapy. This kind of technology requires precise and continuous control of position, intensity and shape of the ions or protons used to irradiate cancers. Patient safety, accelerator operation and dose delivery should be optimized by a real time monitoring of beam intensity and profile during the treatment, by using non-destructive, high spatial resolution detectors. In the framework of AMIDERHA (AMIDERHA - Enhanced Radiotherapy with HAdron) project funded by the Ministero dell’Istruzione, dell’Università e della Ricerca (Italian Ministry of Education and Research) the authors are studying and developing an innovative beam monitor based on Micro Pattern Gaseous Detectors (MPDGs) characterized by a high spatial resolution and rate capability. The Monte Carlo simulation of the beam monitor prototype was carried out to optimize the geometrical set up and to predict the behavior of the detector. A first prototype has been constructed and successfully tested using 55Fe, 90Sr and also an X-ray tube. Preliminary results on both simulations and tests will be presented.
Design, construction and quality control of resistive-Micromegas anode boards for the ATLAS experiment
Authors: Kuger F. , Iengo P.
Published: February 2018

For the upcoming upgrade of the forward muon stations of the ATLAS detector, 1280m2 of Micromegas chambers have to be constructed. The industrialization of anode board production is an essential precondition. Design and construction methods of these boards have been optimized towards mass production. In parallel quality control procedures have been developed and established. The first set of large size Micromegas anode boards has finally been produced in industries and demonstrates the feasibility of the project on full-scale.
Development of Gating Foils To Inhibit Ion Feedback Using FPC Production Techniques
Authors: Arai D. , Ikematsu K. , Sugiyama A. , Iwamura M. , Koto A. , Katsuki K. , Fujii K. , Matsuda T.
Published: February 2018

Positive ion feedback from a gas amplification device to the drift region of the Time Projection Chamber for the ILC can deteriorate the position resolution. In order to inhibit the feedback ions, MPGD-based gating foils having good electron transmission have been developed to be used instead of the conventional wire gate. The gating foil needs to control the electric field locally in opening or closing the gate. The gating foil with a GEM (gas electron multiplier)-like structure has larger holes and smaller thickness than standard GEMs for gas amplification. It is known that the foil transmits over 80 % of electrons and blocks ions almost completely. We have developed the gating foils using flexible printed circuit (FPC) production techniques including an improved single-mask process. In this paper, we report on the production technique of 335 μm pitch, 12.5 μm thick gating foil with 80 % transmittance of electrons in ILC conditions.
MPGD2015: Low-energy electron source to characterize Micromegas/InGrid and study of dE/dx for low energy electrons
Authors: Attie David , Barsuk Sergey , Bezshyyko Oleg , Burmistrov Leonid , Chaus Andrii , Colas Paul , Fedorchuk Oleksii , Golinka-Bezshyyko Larisa , Haranko Mykyta , Krylov Vladyslav , Kubytskyi Viacheslav , Lopez Roberto , Monard Hugues , Sukhonos Daniil , Titov Maxim , Tomassini Davide , Variola Alessandro , Rodin Volodymyr
Published: February 2018

Insert your english abstract here.A new versatile facility LEETECH for detector R&D, tests and calibration is designed and constructed. It uses electrons produced by the photoinjector PHIL at LAL, Orsay and provides a powerful tool for wide range R&D studies of different detector concepts delivering “monochromatic” samples of low energy electrons with adjustable energy and intensity. Among other innovative instrumentation techniques, LEETECH will be used for testing various gaseous tracking detectors and studying new Micromegas/InGrid concept which has very promising characteristics of spatial resolution and can be a good candidate for particle tracking and identification. In this paper the importance and expected characteristics of such facility based on detailed simulation studies are addressed.
Ageing Studies on the First Resistive-MicroMeGaS Quadruplet at GIF++ Preliminary Results
Authors: Alvarez Gonzalez B. , Bianco M. , Farina E. , Iengo P. , Kuger F. , Lin T. , Longo L. , Sekhniaidze G. , Sidiropoulou O. , Schott M. , Valderanis C. , Wotschack J.
Published: February 2018

A resistive-MicroMeGaS quadruplet built at CERN has been installed at the new CERN Gamma Irradiation Facility (GIF++) with the aim of carrying out a long-term ageing study. Two smaller resistive bulk-MicroMeGaS produced at the CERN PCB workshop have also been installed at GIF++ in order to provide a comparison of the ageing behavior with the MicroMeGaS quadruplet. We give an overview of the ongoing tests at GIF++ in terms of particle rate, integrated charge and spatial resolution of the MicroMeGaS detectors.
Candidate eco-friendly gas mixtures for MPGDs
Authors: Benussi L. , Bianco S. , Saviano G. , Muhammad S. , Piccolo D. , Ferrini M. , Parvis M. , Grassini S. , Colafranceschi S. , Kjølbro J. , Sharma A. , Yang D. , Chen G. , Ban Y. , Li Q.
Published: February 2018

Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements.
Influence of water on the surface of graphene
Authors: Kaya Yunus , Kalkan Yalçin , Veenhof Rob
Published: February 2018

We have studied how water modifies the surface of graphene and in particular how the surface conductivity of graphene is affected. According to the literature, two types of interactions should be distinguished: physical, where a water molecule remains intact and is located at some distance from the mesh, and chemical, where a water molecule is imbricated in the graphene bond structure. We have developed theoretical models for both types of interactions using the density functional theory (DFT) with the B3LYP hybrid functional combined with the 6-31G(d) basis set. Our calculations show that the surface conductivity of graphene is reduced in the presence of water.
A MOdular System for Acquisition, Interface and Control (MOSAIC) of detectors and their related electronics for high energy physics experiment
Authors: Robertis G. De , Fanizzi G. , Loddo F. , Manzari V. , Rizzi M.
Published: February 2018

In this work the MOSAIC (“MOdular System for Acquisition, Interface and Control”) board, designed for the readout and testing of the pixel modules for the silicon tracker upgrade of the ALICE (A Large Ion Collider Experiment) experiment at teh CERN LHC, is described. It is based on an Artix7 Field Programmable Gate Array device by Xilinx and is compliant with the six unit “Versa Modular Eurocard” standard (6U-VME) for easy housing in a standard VMEbus crate from which it takes only power supplies and cooling.
Research of Boundary Layer Transition characteristics Induced by Three-Dimensional Discrete Roughness
Authors: Li Feng , Gao Chao , Zhao Zijie , Ren Xudong
Published: February 2018

Roughness strip is a necessary technology for wind tunnel experiment. In order to improve the accuracy and reliability of transition simulation, a new fixed transition technology based on the three-dimensional discrete roughness elements has been established. The configuration parameters of roughness elements are calculated theoretically and the formula and manufacturing processes of roughness elements are developed. Using two-dimensional airfoil and three-dimensional combination models, the transition and additional resistance characteristics of discrete roughness elements are studied. Finally, the scale effect of roughness elements is analyzed and the influence laws of height, diameter, and spacing on transition characteristics have been obtained through numerical calculation. The results of this study indicate that this new discrete roughness is better in transition and additional resistance performance than conventional grit roughness. The results obtained in this paper has created a more reliable and accurate fixed transition technology for wind tunnel experiment and provided some reference for cross-flow transition mechanism.
Measurement of Mutual Interference Sound of Columnar Objects in Air Flow
Authors: Hamada Shohji , Yokoi Yoshifumi
Published: February 2018

When a columnar object is put in a flow, Karman vortex is formed, and aerodynamic noise is generated. It is known that when multiple columnar objects are put in a flow, the flow state becomes complex. This can be known by flow visualization experiment. On other hands, there are few researches on flow sound in the case of mutual interference, that it is not as far as the authors know. Measurement of flow sound is performed using a microphone. Therefore, it is necessary to confirm the sound of the interference flow field reaches the microphone outside the flow field without changing. In this research, experiments were measured to confirm flow sound transmits to a microphone placed outside the flow field without changing. Based on the results, the aerodynamic noise measurement from the columnar object was performed using a low noise wind tunnel experimental apparatus. As a result, it was obtained that some findings on the sound of flow in mutual interference flow field
Concept development of control system for perspective unmanned aerial vehicles
Authors: Koryanov Vsevolod V. , Kokuytseva Tatiana V. , Toporkov Alexey G. , Iljukhin Stepan N. , Akimov Il'ya O. , Mohamado Noa , Da-Poian Victoria
Published: February 2018

Presented actual aspects of the development of the control system of unmanned aerial vehicles (UAVs) in the example of perspective. Because the current and future UAV oriented to implementation of a wide range of tasks, taking into account the use of several types of payload, in this paper discusses the general principles of construction of onboard control complex, in turn, a hardware implementation of the automatic control system has been implemented in the microcontroller Arduino platform and the Raspberry Pi. In addition, in the paper presents the most common and promising way to ensure the smooth and reliable communication of the command post with the UAV as well as to the ways of parry considered and abnormal situations.
Simulation and Effectiveness Analysis on One versus One Beyond Visual Range Air Combat
Authors: Haoyu Liu , Yunfei Zhang , Shihao Li
Published: February 2018

A kind of one versus one beyond visual range (BVR) air combat model has been established, which includes functional models of radar, missile and fighter and the process of several combat stages. Air combat effectiveness ratio (ACER) is defined to analyse the result. The 2k factor design method is used to design combat test case and analyses the influence of three factors (fighter stealth character, missile range and flight height) on ACER. Simulation result reveals that when RCS of one fighter is reduced from 0dBm2 to -10dBm2 which cannot remarkably affect the opposition fighter’s radar detection distance and missile launch distance, the RCS factor has small influence and the missile range factor has great influence. When RCS of one fighter is reduced from -10dBm2 to -20dBm2, the opposition fighter’s radar detection distance will be reduced and lead the result of its missile launch distance be less than its missile range. Compared with the former case, the effect of RCS factor increases and the effect of missile range factor decreases. However, the effect of height is not significant.
Synthesis of Optically Active 15-epi-9,14-Methylene Lipoxin A4
Authors: Nubbemeyer Udo , Duymaz Adile , Körber Jochen , Hofmann Carolin , Gerlach Dorothea
Published: February 2018

The synthesis of lipoxin A4 and B4 analogues (LXA4, LXB4) to gain access to stabilized inflammation resolving compounds is an important field of research. Starting from known structural requirements of the natural compounds displaying biological activity and a broad investigation of their rapid metabolism, various LXA4 derivatives have been developed and tested. Focusing on variation and stabilization of the conjugated E,E,Z,E C7–C14 tetraene moiety of natural LXA4, a methylene bridge introduced between C9 and C14 might suppress any Z/E isomerization of the C11–C12 olefin. Intending to enable at least known structure variations in connection with the C1–C7 and the C15–C20 fragments, a convergent total synthesis starting from a known cycloheptatriene is developed. The C1–C8 building blocks are generated via six-step ex-chiral pool sequences starting from 2-deoxy-d-ribose delivering two 5,6-dihydroxy carboxylic acid derivatives with C7 aldehyde functions. The synthesis of the C8–C21 building block starts from a known cycloheptatriene 1-carbonester (C8–C14, C21) and hexanoyl chloride (C15–C20). After Friedel–Crafts-type coupling, the defined configuration of the C15 OH group is introduced via enantioselective reduction of the ketone precursor. Following an additional four steps, an aryl sulfone C9–C21 building block is completed ready for a key Julia–Kocienski olefination with the C1–C7 compounds. Finally, removal of the protecting groups completes the synthesis of the target optically active 9,14-methylene LXA4 methyl ester.
Geriatrische Dens axis Fraktur – Pro Operation!
Authors: Schnake Klaus
Published: February 2018

Geriatrische Typ 2 Dens axis Frakturen können erfolgreich operativ behandelt werden. Im Vergleich zur konservativen Therapie ist die knöcherne Heilungsrate bei operativer Therapie signifikant höher bei gleicher oder geringerer Mortalität. Weitere Vorteile für die chirurgische Therapie zeigen sich im klinischen Ergebnis und der Kosteneffizienz.
Luxationsfrakturen der unteren HWS – dorsal beginnen!
Authors: Stoffel Michael
Published: February 2018

Luxationsfrakturen der unteren HWS – also ab Hw3 abwärts – sind komplexe und meist hoch instabile Verletzungen, die einer operativen Therapie bedürfen. In diesem Pro/Kontra-Beitrag werden diese Verletzungen zunächst in die Systematik der AO-Spine Klassifikation eingeordnet, die adäquate Diagnostik erläutert und die Behandlungsziele definiert. Nach Vorstellung der grundsätzlichen Therapieoptionen werden die Bedingungen dargelegt, die für ein primär dorsales Vorgehen sprechen: (1) eine dorsal des Myelons gelegene traumatische Raumforderung oder die Notwendigkeit zur mehrsegmentalen Dekompression, (2) eine traumatische Foramenstenose, (3) eine ankylosierende Grunderkrankung oder (4) eine verminderte Knochendichte.
Reactor for tracking catalyst nanoparticles in liquid at high temperature under a high-pressure gas phase with X-ray absorption spectroscopy
Authors: Nguyen Luan , Tao Franklin (Feng)
Published: February 2018

Structure of catalyst nanoparticles dispersed in liquid phase at high temperature under gas phase of reactant(s) at higher pressure (≥5 bars) is important for fundamental understanding of catalytic reactions performed on these catalyst nanoparticles. Most structural characterizations of a catalyst performing catalysis in liquid at high temperature under gas phase at high pressure were performed in an ex situ condition in terms of characterizations before or after catalysis since, from technical point of view, access to the catalyst nanoparticles during catalysis in liquid phase at high temperature under high pressure reactant gas is challenging. Here we designed a reactor which allows us to perform structural characterization using X-ray absorption spectroscopy including X-ray absorption near edge structure spectroscopy and extended X-ray absorption fine structure spectroscopy to study catalyst nanoparticles under harsh catalysis conditions in terms of liquid up to 350 °C under gas phase with a pressure up to 50 bars. This reactor remains nanoparticles of a catalyst homogeneously dispersed in liquid during catalysis and X-ray absorption spectroscopy characterization.
Effects of protein content on feed intake and performance of grasscutters fed diets containing forage meal
Authors: Nyameasem J. K. , Akoloh M. , Adu E. K.
Published: February 2018

The potential of grasscutters (Thryonomys swinderianus) as a source of animal protein can be exploited with better understanding of its nutrient requirement. This experiment was conducted to determine the protein requirement of growing grasscutters fed formulated diets containing forage meal. Twenty-four growing grasscutters, in groups of four, were randomly allotted to four treatment diets formulated to respectively supply 14, 16, 18 and 20% crude protein (CP). Parameters measured included daily feed intake, daily weight gain (growth rate), final bodyweight, feed conversion ratio and cost-to-gain ratio. Dietary protein significantly (P < 0.05) influenced daily weight gain, as well as the final liveweights of the animals. The mean daily weight gain of the animals fed the 18% CP diet was not significantly (P > 0.05) different from those fed the 20% CP diet (12.8 vs 11.7 g/day), but was significantly higher than animals fed the 16% (6.4 g/day) and 14% (7.0 g/day) CP diets. The mean feed conversion ratios of the animals fed the diets with 18% CP (4.1) was, however, only significantly (P < 0.05) different from animals fed diets with 16% (7.2) and 14% (6.3) CP. Given the overall economic importance of low cost-to-gain ratio, and the profitability of the diets thereof, these results suggest that 18% is the optimum CP level for economically feeding growing grasscutters on formulated diets containing forage meal.
Counting the costs: nitrogen partitioning in Sorghum mutants
Authors: Blomstedt Cecilia K. , Rosati Viviana C. , Lindberg Møller Birger , Gleadow Ros
Published: February 2018

Long-standing growth/defence theories state that the production of defence compounds come at a direct cost to primary metabolism when resources are limited. However, such trade-offs are inherently difficult to quantify. We compared the growth and nitrogen partitioning in wild type Sorghum bicolor (L.) Moench, which contains the cyanogenic glucoside dhurrin, with unique mutants that vary in dhurrin production. The totally cyanide deficient 1 (tcd1) mutants do not synthesise dhurrin at all whereas mutants from the adult cyanide deficient class 1 (acdc1) have decreasing concentrations as plants age. Sorghum lines were grown at three different concentrations of nitrogen. Growth, chemical analysis, physiological measurements and expression of key genes in biosynthesis and turnover were determined for leaves, stems and roots at four developmental stages. Nitrogen supply, ontogeny, tissue type and genotype were all important determinants of tissue nitrate and dhurrin concentration and turnover. The higher growth of acdc1 plants strongly supports a growth/defence trade-off. By contrast, tcd1 plants had slower growth early in development, suggesting that dhurrin synthesis and turnover may be beneficial for early seedling growth rather than being a cost. The relatively small trade-off between nitrate and dhurrin suggests these may be independently regulated.
Manipulating the soil microbiome for improved nitrogen management
Authors: Hu Hang-Wei , He Ji-Zheng
Published: February 2018

The soil microbiome, including bacteria, archaea, fungi, viruses, and other microbial eukaryotes, has crucial roles in the biogeochemical cycling of nitrogen (N), the maintenance of soil fertility, and the plant N use efficiency (NUE) in agro-ecosystems1. Recent advances in omics-based technologies (e.g. metagenomics, metatranscriptomics, and metaproteomics) have expanded our understanding of the soil microbiome and their controls on specific N-cycling processes1–3. Given the growing N-based fertiliser consumption and continuous land degradation, innovative technologies are needed to manipulate the soil microbiome to improve crop NUE, reduce N losses and increase N reservation in soil. This article discusses the research directions to facilitate the development of microbiome-manipulating technologies for sustainable management of N transformation processes.
Engineering biological nitrogen removal in wastewater treatment via the control of nitrite oxidising bacteria using free nitrous acid
Authors: Laloo Andrew Elohim , Bond Philip L
Published: February 2018

Nitrogen compounds need to be removed or captured from wastewater streams before disposal to protect our aquatic environments from eutrophication. Particular bacteria facilitating the biological removal of nitrogen during wastewater treatment include ammonia oxidising bacteria (AOB), nitrite oxidising bacteria (NOB), denitrifiers, as well as anaerobic ammonium oxidising (Anammox) bacteria. Manipulating these microbial communities can improve efficiency in nitrogen removal. Bypassing nitrate production by selectively inhibiting NOB reduces the need for oxygen and the addition of external carbon for the nitrogen removal. Various approaches to selectively inhibit NOB in the nitrification process are available. Here we present an approach using the biocide, free nitrous acid (FNA) to selectively suppress NOB growth thereby improving the efficiency of the nitrogen removal process.
The Village in Contemporary Persian Poetry
Authors: Shams Fatemeh
Published: February 2018

This paper explores the ever-shifting symbiosis between the village motif, social justice and populist politics in Iran over the past three decades. The village has remained a recurring motif in Persian literature, employed by a variety of writers and state institutions for a range of means. As a symbol, it has been a conduit into which any ideology can be poured; the village allegory can be manipulated to both condemn and support the official policies of the state. A comparison of Iran’s pre- and post-revolutionary literature sheds light on the ways the state literati perpetuated an idealized picture of the village as an authentic, sacred space, increasingly associated with religious nationalism during the 1980s. The paper examines the key socio-political influences on the evolution of the pastoral motif, the work of state-sponsored official poets, and the impact of the village on the cultural doctrine of the Islamic Republic.
RETRACTED: Research on Data Mining of the Internet of Things Based on Cloud Computing Platform
Authors: Zhang Wenqing
Published: February 2018

Based on the development of society and the progress of information technology, China’s information industry has made great progress and has gradually become an important pillar of national economic development. In this context, the gradual integration of information technology had promoted the construction of the Internet of Things system, so as to promote the human life developed in the direction of modernization intelligently. At present, in the process of forming the development of the Internet of Things the first need to fully tap the data, which thus provide users with better service, for the development of large-scale development of the Internet. This paper analyzes the meaning of Internet of things, and discusses the characteristics of Internet of things and data mining, hoping to promote the improvement on the Internet of Things system in China, and thus promote the realization of higher efficiency.
RETRACTED: Research on Technology Innovation Management in Big Data Environment
Authors: Ma Yanhong
Published: February 2018

With the continuous development and progress of the information age, the demand for information is getting larger. The processing and analysis of information data is also moving toward the direction of scale. The increasing number of information data makes people have higher demands on processing technology. The explosive growth of information data onto the current society have prompted the advent of the era of big data. At present, people have more value and significance in producing and processing various kinds of information and data in their lives. How to use big data technology to process and analyze information data quickly to improve the level of big data management is an important stage to promote the current development of information and data processing technology in our country. To some extent, innovative research on the management methods of information technology in the era of big data can enhance our overall strength and make China be an invincible position in the development of the big data era.
On asymptotic variance of whole-plane SLE
Authors: Ho Xuan Hieu , Le Thanh Binh
Published: February 2018

In this paper we rigorously compute the average McMullen asymptotic variance for the logarithmic derivative of the interior whole-plane Schramm–Loewner evolution

S
L
E

2

\mathrm {SLE}_{2}

. Combined with some earlier results on the integral mean spectrum by B. Duplantier, Chi T. P. Nguyen, Nga T. T. Nguyen, and M. Zinsmeister (see also B. Duplantier, Hieu X. Ho, Binh T. Le, and M. Zinsmeister (2015 and 2017)), we prove an analogue of McMullen dimension formula.
Altered translation initiation ofGja1limits gap junction formation during epithelial–mesenchymal transition
Authors: James Carissa C. , Zeitz Michael J. , Calhoun Patrick J. , Lamouille Samy , Smyth James W.
Published: February 2018

Epithelial–mesenchymal transition (EMT) is activated during development, wound healing, and pathologies including fibrosis and cancer metastasis. Hallmarks of EMT are remodeling of intercellular junctions and adhesion proteins, including gap junctions. The GJA1 mRNA transcript encoding the gap junction protein connexin43 (Cx43) has been demonstrated to undergo internal translation initiation, yielding truncated isoforms that modulate gap junctions. The PI3K/Akt/mTOR pathway is central to translation regulation and is activated during EMT, leading us to hypothesize that altered translation initiation would contribute to gap junction loss. Using TGF-β–induced EMT as a model, we find reductions in Cx43 gap junctions despite increased transcription and stabilization of Cx43 protein. Biochemical experiments reveal suppression of the internally translated Cx43 isoform, GJA1-20k in a Smad3 and ERK-dependent manner. Ectopic expression of GJA1-20k does not halt EMT, but is sufficient to rescue gap junction formation. GJA1-20k localizes to the Golgi apparatus, and using superresolution localization microscopy we find retention of GJA1-43k at the Golgi in mesenchymal cells lacking GJA1-20k. NativePAGE demonstrates that levels of GJA1-20k regulate GJA1-43k hexamer oligomerization, a limiting step in Cx43 trafficking. These findings reveal alterations in translation initiation as an unexplored mechanism by which the cell regulates Cx43 gap junction formation during EMT.
nVenn: generalized, quasi-proportional Venn and Euler diagrams
Authors: Pérez-Silva José G , Araujo-Voces Miguel , Quesada Víctor
Published: February 2018

Motivation

Venn and Euler diagrams are extensively used for the visualization of relationships between experiments and datasets. However, representing more than three datasets while keeping the proportions of each region is still not feasible with existing tools.

Results

We present an algorithm to render all the regions of a generalized n-dimensional Venn diagram, while keeping the area of each region approximately proportional to the number of elements included. In addition, missing regions in Euler diagrams lead to simplified representations. The algorithm generates an n-dimensional Venn diagram and inserts circles of given areas in each region. Then, the diagram is rearranged with a dynamic, self-correcting simulation in which each set border is contracted until it contacts the circles inside. This algorithm is implemented in a C++ tool (nVenn) with or without a web interface. The web interface also provides the ability to analyze the regions of the diagram.

Availability and implementation

The source code and pre-compiled binaries of nVenn are available at https://github.com/vqf/nVenn. A web interface for up to six sets can be accessed at http://degradome.uniovi.es/cgi-bin/nVenn/nvenn.cgi.

Supplementary information

Supplementary data are available at Bioinformatics online.
Idiopathic pulmonary fibrosis
Authors: Vega-Olivo Michelle , Criner Gerard J.
Published: February 2018

Idiopathic pulmonary fibrosis (IPF) is a rare disease characterized by decline in lung function, dyspnea, and cough. The clinical course of IPF is variable and unpredictable. Early referral to specialists is key to ensure timely and accurate diagnosis. Two antifibrotic drugs (nintedanib and pirfenidone) have been approved for the treatment of IPF.
A Comparison of Approaches for Mastery Learning Standard Setting
Authors: Barsuk Jeffrey H. , Cohen Elaine R. , Wayne Diane B. , McGaghie William C. , Yudkowsky Rachel
Published: February 2018

Purpose

Defensible minimum passing standards (MPSs) must be used to evaluate learner performance outcomes in health professions education. In this study, the authors compared the results of traditional Angoff and Hofstee standard-setting exercises with the Mastery Angoff and Patient-Safety approaches for central venous catheter (CVC) insertion skills examinations. The authors also evaluated how these standards affected the historical performance of residents who participated in a simulation-based mastery learning (SBML) curriculum for CVC insertion skills.

Method

In April and May 2015, 12 physicians with expertise in CVC insertion set MPSs for previously published internal jugular (IJ) and subclavian (SC) CVC insertion checklists using Angoff, Hofstee, Mastery Angoff, and Patient-Safety approaches. The resulting MPSs were compared using historical performance of internal medicine and emergency medicine residents who participated in CVC insertion SBML.

Results

The MPSs were set as follows: Angoff: IJ 91% checklist items correct, SC 90%. Hofstee: IJ 88%, SC 90%. Mastery Angoff: IJ 98%, SC 98%. Patient-Safety: IJ 98%, SC 98%. Based on the historical performance of 143 residents assessed on IJ and SC insertion, applying the 98% MPS would result in additional practice and retesting of 55/123 residents (45%) who had previously passed the IJ examination and 36/130 residents (28%) who had passed the SC examination using the Angoff and Hofstee MPSs.

Conclusions

The Mastery Angoff and Patient-Safety standard-setting approaches resulted in higher CVC insertion SBML MPSs compared with traditional standard-setting methods. Further study should assess the impact of these more rigorous standards on patient outcomes.
Psychological Factors and the Development of Chronic Whiplash–associated Disorder(s)
Authors: Campbell Letitia , Smith Ashley , McGregor Leanne , Sterling Michele
Published: February 2018

Objectives:

To assess which psychological factors are important in the development of chronic whiplash symptoms.

Methods:

Searches were conducted across PubMed, CINAHL, Scopus, and PsychINFO up until March 2017. Studies were included if they investigated psychological prognostic factors in association with recovery from a whiplash injury. Studies also had to be prospective, cohort, follow-up or observational studies, have a 6 month follow-up and published in English. Quality assessments were conducted by 2 independent reviewers. Thirty-one articles were included investigating 34 psychological factors.

Results:

Poor expectations of recovery, posttraumatic stress symptoms and passive coping emerged as the most consistent prognostic factors of chronic neck pain and/or disability after a whiplash injury. Anxiety, travel anxiety, depression, personality, precollision distress, general psychological distress, and avoidance behavior were not associated with chronic whiplash problems.