bluuebunny/crossref_metadata_2025_split huggingface dataset:
International pilot study CCQM-P193: 10 μmol mol−1 water vapour in nitrogen
Authors: Brewer P J , Gieseking B , Ferracci V F , Ward M , Carroll P , Bell S , Hall B 
Published: July 2020

The measurement of trace amounts of water in process gases is of paramount importance to a number of manufacturing processes. Water is considered to be one of the most difficult impurities to remove from gas supply systems and there is strong evidence that the presence of water contamination in semiconductor gases has a measurable impact on the quality and performance of devices. Consequently, semiconductor manufacturers are constantly reducing target levels of water in purge and process gases. As the purity of gases improves, the problem of quantifying contamination and ensuring that the gases are within specification at the point of use becomes more challenging. There are several established techniques for detecting trace water vapour in process gases. These include instruments based on the chilled mirror principle which measures the dew-point of the gas and the quartz crystal adsorption principle which measures the adsorption of water vapour into a crystal with a hygroscopic coating. Most recently, spectroscopic instruments such as those employing cavity ring-down spectroscopy (CRDS) have become available. The calibration of such instruments is a difficult exercise because of the very limited availability of accurate water vapour standards. This CCQM pilot study aims to assess the analytical capabilities of laboratories for measuring the composition of 10 μmol mol−1 water vapour in nitrogen.

Main text

To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.
The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
One-dimensional phase retrieval: regularization, box relaxation and uniqueness
Authors: Wong Wing Hong , Lou Yifei , Marchesini Stefano , Zeng Tieyong 
Published: July 2020

Abstract
Recovering a signal from its Fourier magnitude is referred to as phase retrieval, which occurs in different fields of engineering and applied physics. This paper gives a new characterization of the phase retrieval problem. Particularly useful is the analysis revealing that the common gradient-based regularization does not restrict the set of solutions to a smaller set. Specifically focusing on binary signals, we show that a box relaxation is equivalent to the binary constraint for Fourier-types of phase retrieval. We further prove that binary signals can be recovered uniquely up to trivial ambiguities under certain conditions. Finally, we use the characterization theorem to develop an efficient denoising algorithm.
Continuous gas temperature measurement of cold plasma jets containing microdroplets, using a focussed spot IR sensor
Authors: Hendawy N , McQuaid H , Mariotti D , Maguire P 
Published: July 2020

Abstract
Controlling gas temperature via continuous monitoring is essential in various plasma applications especially for biomedical treatments and nanomaterial synthesis but traditional techniques have limitations due to low accuracy, high cost or experimental complexity. We demonstrate continuous high-accuracy gas temperature measurements of low-temperature atmospheric pressure plasma jets using a small focal spot infrared sensor directed at the outer quartz wall of the plasma. The impact of heat transfer across the capillary tube was determined using calibration measurements of the inner wall temperature. Measured gas temperatures varied from 25 °C–50 °C, increasing with absorbed power and decreased gas flow. The introduction into the plasma of a stream (∼105 s−1) of microdroplets, in the size range 12 μm–15 μm, led to a reduction in gas temperature of up to 10 °C, for the same absorbed power. This is an important parameter in determining droplet evaporation and its impact on plasma chemistry.
First principles prediction of structural, mechanical and thermodynamic stability in new 18-valence electron XVZ (X = Fe, Ni, Z = Ga, As) half-Heusler semiconductors
Authors: Osafile O E , Azi J O 
Published: July 2020

Abstract
A suitable semiconductor adds a significant advantage to the technology industry, and the need for better, available, and tunable materials is insatiable. Of the various materials in use as semiconductor devices, the half-Heusler alloys have proved to be promising premised on the possibilities of tuning the various properties to meet the desired demand. In this work, we have investigated the structural, electronic, elastic, mechanical, thermodynamic, and phonon properties of FeVAs and NiVGa half-Heusler alloys. The alloys have 18-valence electrons, and they obey the Slater–Pauling rule. They both belong to the C1b face-centered cubic crystal structure and exhibit indirect bandgap. The negative formation energy shows that experimental fabrication can be attempted; it also confirms the stability of the structures. The elastic properties obey the stability criteria set by Born and Huang and are, therefore, stable. We analyzed the mechanical strength of the alloys, and FeVAs proves to be a superhard material with a Vickers hardness of 78.8 while NiVGa alloy is not. The Debye temperature promotes FeVAs alloy over NiVGa alloy in terms of thermal conductivity. From investigations on the phonon properties using a

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supercell to facilitate convergence, there are no negative frequencies; hence, we submit that both alloys are dynamically stable.
The Identification of Morphological and Anatomical Structures of Pluchea indica
Authors: Susetyarini Eko , Wahyono Poncojari , Latifa Roimil , Nurrohman Endrik 
Published: July 2020

Abstract
This current research aimed at identifying the morphological and anatomical structures of Pluchea indica, specifically in root, stem, leaf, and flower of its. A descriptive approach was applied to this research and was conducted at Biology Laboratory of University of Muhammadiyah Malang from July to August 2019. The identification of morphological structure, furthermore, was focused on the characteristics of root, stem, leaf, and flower organ. In addition, the identification of anatomical structure was through a transverse incision in each organ by means of fresh preparation, safranin coloration, and Scanning Electron Microscope (SEM). The collected data were analyzed descriptively and quantitatively. The identification of morphological structure in the organs was referred to a book entitled Morfologi Tumbuhan (Plant Morphology) by Tjitrosoepomo (2007); while the anatomical identification was referring to a book of Anatomi Tumbuhan (Plant Anatomy) by Fahn (1995). The result of the identification has indicated that Pluchea indica possesses the following morphological characteristics: 1) the leaves are light green, with trichomes in their upper and lower sides; 2) the length of branches signifies 1 cm in average, located at crisscrossing points and in a form of abovatus; 3) the tip of the leaves (apex folli) is sharp-formed (acanthus), with serrated pattern at the edge of the leaves (margo folli); 3) the base of the leaves (basic folli) is blunted (obsitus) and the structure of the leaf bones (nervatio) is pinnate-formed (penninervis), with oval-shaped leaf blades and parchment-like intervenium; and 4) the stem is in a round form with monopodial branches, taproot, and capitulum inflorescent. Further, with the reference to the anatomical structure of the stem and root, there have been found epidermal tissue, cortex, xylem and phloem, sclerenchyma, and pith. The modification on stomatal epidermis is in a form of kidney with two buffer cells of 13.6 μm in length and 9.82μm in width. Meanwhile, the porous length and width consecutively signify 9.02 μm and 1.32 μm, with glandular trichomes of 551 μm long in average and 39.6 μm wide in average.
Synthesis of Eichhornia crassipes Biochar: Sustainable Efficient Adsorbent for Reducing Cr (VI) Metal Ion
Authors: Mulyatun  
Published: July 2020

AbstractChromium (Cr) is the most widely used metal in industrial activities and is the most toxic heavy metal ion found in waters. Utilization of Eichhornia crassipes as a Sustainable Efficient Adsorbent of heavy metal Cr (VI) is one of the innovations and alternative technologies that are very beneficial for society and the environment. The synthesis of Eichhornia crassipes biochar in this study employed the hydrothermal method. Hydrothermal temperature variations used in biochar synthesis were 220°C/240°C/260°C/280°C. Eichhornia penetrated biochar with H2O2 to the Cr (VI) metal adsorption capacity. The synthesis of biochar Eichhornia crassipes has the characteristics of combining hydroxyl, carbonyl, carboxyl, and amine functional groups. The surface morphology in the Eichhornia crassipes biochar modification term is rougher and irregular compared to Eichhornia crassipes biochar without modification. The modification of Eichhornia crassipes biochar using H2O2showed an increase in oxygen composition in terms of modified biochar so that it increased the adsorption capacity of Cr (VI) metal ion. The best value of adsorption capacity in Eichhornia crassipes biochar terms modified with a hydrothermal temperature of 240°C that is equal to 30.2156 mg/g.
Zeolite based Geopolymer from Biomass: a Sustainable Adsorbent for Water Softener
Authors: Udaibah Wirda 
Published: July 2020

AbstractWater quality in several areas in Semarang, especially in Tugu sub-district, is still very low and unsuitable for drinking. Ground water contaminated with Ca2+and Mg2+ions which is commonly known as hard water. This study aims to examine the potential of zeolite-based geopolymer adsorbents, materials which have a zeolite-like structure but are basically geopolymers. Synthesis of zeolite based geopolymers from rice husk ash, kaolin and NaOH activators has been successfully carried out by the sol gel method. Three-dimensional networks have been formed from Silica (SiO2) and Alumina (Al2O3). Activator solution, NaOH, with variations in concentrations of 4 M (Geopolymer 4), 8 M (Geopolymer 8) and 12M (Geopolymer 12) gives significant differences. As the higher the concentration of activator solution, the more silica and alumina dissolved so that the geopolymer becomes amorphous. These results are consistent with XRD and FTIR data. Geopolymer 12 has an adsorption capacity of 97.4% is the best adsorbent in adsorbing Ca2+and Mg2+metal ions with operating conditions at 40°C for 60 minutes. This shows that there is a close relationship between synthesis methods, structural characterization and geopolymer adsorption activities. The higher concentration of NaOH gives amorphous geopolymers. NaOH will activate the silica and alumina surfaces on the geopolymer, making it easier for adsorbents to absorb and interact with the adsorbate molecules, namely Ca2+ions and Mg2+ions.
The Development Stoiciometry Module Based On POGIL and Unity of Sciences
Authors: Zammi M , Hakim F 
Published: July 2020

Abstract
The development of POGIL-based chemistry modules and the unity of science carried out because there is a dichotomy of science among academics, learning media is not yet loaded with UOS and accommodates student activities, and learning media are not in accordance with student learning styles. Therefore the purpose of this study is to produce a POGIL-based module and loaded with UOS. The development model used is a 4-D developed by Thiagarajan provided to define, design, develop and disseminate. The developed module is validated by material and media experts. The results of the validation of material experts 90.62% are valid categories and the results of the validation of media experts are 88.75% valid categories. The module openness test results from an average of 87.68%, namely Independent / Free The results of student responses to the use of modules amounted to 86.72% with a very good category. Thus POGIL and UOS-based chemistry modules can be used as student learning resources.
Determination of Granting Appropriateness Credit at “Daruzzakah Rensing” Cooperative Using the Support Vector Machine (SVM) Algorithm
Authors: Yahya  , Nurhidayati  
Published: July 2020

Abstract
Credit is the main product of savings and loan cooperatives to increase profitability. The greater the credit issued, the greater the benefits obtained by cooperatives. Each cooperative will package credit products in such a way as to attract the attention of every customer. However, cooperatives can find problems in the process of lending, such as the “Daruzzakah Rensing” Cooperative located in “Desa Rensing, Kecamatan Sakra Barat, Lombok Timur-NTB-Indonesia”. The main products of the Cooperative “Daruzzakah Rensing” are savings and loans. In distributing credit, the cooperative always decides based on statistical data. This data is sometimes not useful if the supporting methods used to predict and classify the data are not appropriate. Therefore, this research requires a method that can classify and predict problematic and non-problematic customers. To answer this question, using the SVM (Support Vector Machine) algorithm to find out the level of accuracy in analyzing creditworthiness proposed by prospective debtors. The SVM algorithm is used to predict, classify, evaluate, and analyze credit. From the results of data processing carried out using the SVM algorithm (Support Vector Machine), it can be categorized as an excellent method, with an accuracy of 90.42% and AUC at 0.957. Accuracy of 90.42% means the SVM algorithm can provide decisions about feasible or not feasible in granting credit to customers who apply for loans.
Implementation Internet of Things (IoTs) to Monitoring Temperature Oven Tobacco System Towards 4.0 Industry
Authors: Gunawan Indra , Wasil Muhammad 
Published: July 2020

Abstract
Tobacco is planted by the farmers in dry season through some process such as seeding, planting and drying. In drying process, the farmers use traditional technology named oven. When checking the temperature conditions of the tobacco, the farmers still use an estimation to measure the heat temperature of combustion stove. Base on those problems, the farmer need innovation technology which is used to make them easier to keep the stability of the temperature in the oven area in order to protect the quality of tobacco. “Internet of things” (IOTs) is provided to answer the farmers’ problem. By utilizing the internet of things (IOTs) in a Smartphone, this application will make the farmers easier to check the temperature conditions automatically to the temperature rises excessively without standing by in the oven or burning location. The application of IOTS with the data accuracy rate of ± 96%,%, can be said that it works well, although there are still shortcomings in the targets planned but the development program will be added. Hopefully, this application will help the farmer to be more ready to face 4.0 industry in the field of agriculture.
The Development Of Augmented Reality For Hardware Introduction For SDU Hamzanwadi Students
Authors: Kholisho Yosi Nur , Marfuatun  , Lutfi Samsul 
Published: July 2020

AbstractThe study conducted on the Primary School (SDU) Hamzanwadi with the subject focused on the main informatics on introduction of hardware. Here, the teacher only explained by drawing on the blackboard without being equipped with learning media. The formulation of the problems were: How is the learning media design process in the form of Augmented Reality, What result from product validation both from media experts and material experts, What is the response of users, namely SDU students Hamzanwadi. Research and Development methods. Based on the results of the validation of media experts in the form of Augmented Reality hardware recognition got an average value of a percentage of 93.16 included in category 4 that is “very feasible”, the results of expert validation the material got an average value of a percentage of 94.5 included in category 4 that is “very feasible”. Based on the results of interviews conducted to 5 students, they found it that students enjoyed learning media products in the form of Augmented Reality. The results got show that there are positive responses got from students related to learning media products in the form of Augmented Reality.
The Development of Indonesian Language Learning Model through Puppet Creation Media
Authors: Muttaqin Zainul , Fakihuddin Lalu , Taufiq Muh. 
Published: July 2020

AbstractThe aim of this research is to analyse the development model in learning Indonesian language through puppet creation media in fifth-grade students of elementary school NWRekat Lauk.The research is research and development. It orients the development to produce and test a product of language learning media through puppet creation. Direct interviews conducted the research step. The development steps were product design, expert validation, and testing. The learning media by using puppet creation which developed and used based on the media expert which categorized “good enough” because it was between 26,04<x<33,96 with a total score was 27 and the mean was 2,7. It categorized the material expert “good” between 30,6 <x<16,8 with a total score was 32 and the mean was 27. The learning result of the highest score was 85, the lowest score 55, the number of minimum total criteria was 60, and the percentage was 88,23%. The students’ learning response were excellent students who answered “no” showed which no” with the mean percentage of “yes” was “97,05%. And “No” were 2,95 %. Thus, media of learning by using puppet creation can influence the students’ learning outcomes.
Maximizing Computer Based Test (CBT) Teslet Model for Education Quality Mapping
Authors: Wirasasmita Rasyid Hardi , Alpian Mimi , Hayati Nila 
Published: July 2020

Abstract
Mapping the quality of education is one step that can be done to anticipate and overcome problems in the world of education. Basically, the mapping of the quality of education is aimed at equitable distribution of education. To achieve these objectives, it is necessary to maximize the development of three aspects of quality consisting of inputs, processes and outputs. The process as an important part of the responsibility of teachers has an extraordinary role in gathering various information or data needed to determine the quality or the quality of education at a particular institution or school. Therefore, one solution that can be taken which is to develop a test model based on computer, commonly known as Computer Based Testing (CBT). CBT is a form of software that can be developed using a computer. The development of the CBT in question must also be accompanied by a quality problem model so that the policies taken can be effective. The test model testlet is an alternative that can be maximized considering that this test is a collaboration between the form of problem and multiple-choice questions with the level of difficulty of questions that are tied. By using this testlet, the teacher can not only obtain information about student competencies, but can also obtain information about individual characteristics. In addition, the use of this test model will make it easier for governments and educators to conduct quality mapping because it is more effective and efficient
Application of online conseling services in facing competition asean economic community
Authors: Mahyatun Baiq , Muhsifuddin M , Syofiyanti Dessy 
Published: July 2020

Abstract
MEA in Indonesia in 2015 has been in the spotlight and has generated a myriad of debates among the public. MEA itself is one form of realization of ASEAN’s vision to create a single market and production base that is stable, prosperous, and competitive. This, of course, greatly affects all systems in Indonesia, including the education that participates in receiving the impact of the AEC. Counseling as one part of education, of course contributed greatly to the policy. The development of increasingly sophisticated knowledge and technology in the MEA, does not necessarily also have a positive impact in the wider community, so we often encounter a growing number of social problems that develop in modern society. That is why counselors as an educator are felt to need to develop creativity in providing services to prevent and overcome problems that will arise in the MEA. One of the efforts that can be taken is using online counseling services. Various forms of counseling services (one of them online counseling) aims to develop all the potential possessed by the children of the nation, so as not to be left behind by the competition that arises in the MEA. Referring to this explanation, the counselor as a counseling service officer, is considered important to develop a variety of counseling service strategies in dealing with the MEA.
Visualization Of The Traditional House Architecture Of Belek Sembalun Lawang Village By Using 3D Animation
Authors: Mahpuz  , Bahtiar Hariman 
Published: July 2020

Abstract
the development of information technology is currently progressing, multimedia is one of the right way to facilitate the delivery of information in the form of audiovisual form of 3D animation. Utilizing multimedia to convey information is as one way in an effort to publish the traditional architecture of the Lombok area, especially the traditional house of Belek Sembalun Lawang Village in the form of 3D animation using blender software that can be used as a medium of learning. Belek Village is a large village/village parent which was first created consisting of seven houses that are the forerunner of Sembalun Village. By using 3D animation is expected to provide solutions and alternatives in the process of introduction and learning about the traditional architecture of Lombok traditional house especially the traditional house of Belek Village, so that in the process of learning and recognition becomes more unique and interesting, as well as learning media and introduction of traditional house of Belek Village, 3D animation can also provide an advantage in publication efforts and documentation of history and culture of Sembalun Lawang Villag.
Website as Foundation Information Media under the auspices of Nahdlatul Wathan
Authors: Sudianto Aris , Sugiantara Jagat 
Published: July 2020

Abstract
The Nahdlatul Wathan organization is one of the largest and most widespread organizations in West Nusa Tenggara, especially in East Lombok. The number of foundations under the Nahdlatul Wathan organization has increased rapidly from time to time. But parties from the organization’s Nahdaltul Wathan were still having difficulty processing data and getting the latest information about the number and conditions of each foundation under the auspices of Nahdlatul Wathan. This is because the management of the Nahdalatul Wathan organization does not yet have a system that can manage the data as mentioned above. So the Nahdlatul Wathan organization needs the media that was used to overcome it which is called a web-based information system foundation that uses the PHP programming language and MySQL as its database data. With this system, it can simplify and streamline the performance of the Nahdlatul Wathan management, as well as the community, to get the latest information on the development and number of foundations under the Nahdalatul Wathan, which can be accessed quickly and precisely, so it does not take a long time.