bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance of Fly Ash Geopolymer Concrete Incorporating Bamboo Ash at Elevated Temperature
Authors: Ishak Shafiq , Lee Han-Seung , Singh Jitendra Kumar , Ariffin Mohd Azreen Mohd , Lim Nor Hasanah Abdul Shukor , Yang Hyun-Min
Published: October 2019

This paper presents the experimental results on the behavior of fly ash geopolymer concrete incorporating bamboo ash on the desired temperature (200 °C to 800 °C). Different amounts of bamboo ash were investigated and fly ash geopolymer concrete was considered as the control sample. The geopolymer was synthesized with sodium hydroxide and sodium silicate solutions. Ultrasonic pulse velocity, weight loss, and residual compressive strength were determined, and all samples were tested with two different cooling approaches i.e., an air-cooling (AC) and water-cooling (WC) regime. Results from these tests show that with the addition of 5% bamboo ash in fly ash, geopolymer exhibited a 5 MPa (53%) and 5.65 MPa (66%) improvement in residual strength, as well as 940 m/s (76%) and 727 m/s (53%) greater ultrasonic pulse velocity in AC and WC, respectively, at 800 °C when compared with control samples. Thus, bamboo ash can be one of the alternatives to geopolymer concrete when it faces exposure to high temperatures.
Fuzzy Multicriteria Decision-Making Model (MCDM) for Raw Materials Supplier Selection in Plastics Industry
Authors: Wang Chia-Nan , Nguyen Van Thanh , Chyou Jiin-Tian , Lin Tsung-Fu , Nguyen Tran Ngoc
Published: October 2019

To be able to compete in the domestic plastic industry, small and medium-sized enterprises producing plastic need to proactively find the supply of raw materials, avoiding shortages like in the previous years. Purchasing is extremely important and will create a competitive advantage with competitors in the market, so finding suppliers will determine the success in the later stages of the production chain. With the development of the current information system, selection and evaluation have become important in order to achieve effective decision-making through optimal options. In this study, the authors provide a new approach for decision-makers in evaluating and selecting suppliers, which is formulated based on the supply chain operation reference (SCOR) model, fuzzy analytic network process (FANP), and VIseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR). The contribution of this research is to propose a multicriteria decision-making model (MCDM) for raw material supplier selection in the plastic industry. This research also provided a useful guideline for supplier selection in other industry.
Associations of Cardiovascular and All-Cause Mortality with Metabolic Syndrome in Hemodialysis Patients: A Prospective Single-Center Study
Authors: Dimitrijevic Zorica , Jovanovic Andriana , Cvetkovic Mina , Vrecic Tamara , Kostic Emina , Mitic Branka
Published: October 2019

Background and objectives: Metabolic syndrome (MetS) is a cluster of risk factors, such as abdominal obesity, insulin resistance, dyslipidemia and hypertension, that together increase the risk of cardiovascular disease. Chronic hemodialysis (HD) patients have multiple comorbidities and many metabolic disorders, causing the frequent occurrence of metabolic syndrome. The goal of this study was to assess the prevalence of MetS in HD patients, and its association with all-cause and cardiovascular (CV) mortality. Patients and methods: A total of 138 HD patients were included in this prospective study. We analyzed demographic, anthropometric and biochemical data. Outcome measures were all-cause and CV mortality during the three-year follow-up. Results: MetS was diagnosed in 57.24% of enrolled patients. During the 36 months of follow-up, 33 patients died. MetS patients showed a significantly higher mortality rate than non-MetS (30.4% versus 16.36%, p < 0.001). The association of different MetS components with cardiovascular mortality reached significance when a minimum of three components were present (1.81 (95% confidence interval CI = 1.21–2.33)), with a grouped increase in effect size for subjects with four or five MetS components. Subjects with MetS exhibited nearly twice as high risk for all-cause (hazard ratio HR = 1.99 (95%CI) = 1.42–2.97) and 2.5 times for CV (HR = 2.51 (95%CI) = 1.25–3.83) mortality compared with those without MetS, after adjustment for age, gender, and cardiovascular disease. Conclusions: The study demonstrates that MetS is widespread in HD patients. In future, the focus must be on an active screening approach, and treatment of cardiometabolic risk factors, aiming to reduce mortality.
Effect of Muntingia calabura L. Stem Bark Extracts on Uric Acid Concentration and Renal Histopathology in Diabetic Rats
Authors: Safrida Safrida , Sabri Mustafa
Published: October 2019

Background and objectives: This study was designed to determine uric acid concentration and renal histopathology of Muntingia calabura L. stem bark extract in diabetic rats and to compare the natural product of M. calabura L. stem bark extract with allopurinol. Materials and Methods: A completely randomized design was used for the experiment, which consisted of six treatment groups, each consisting of four rats, as follows: 1) NR, normal rat; 2) KN, diabetic rat (negative control); 3) KP, diabetic rats given allopurinol 10 mg/kg body weight; 4) EM150, diabetic rats given the test extract 150 mg/kg body weight/day; 5) EM300, diabetic rats given the test extract 300 mg/kg body weight/day; and 6) EM450, diabetic rats given for extract 450 mg/kg body weight/ day. Results: The results showed that M. calabura L. stem bark extract decreased (p < 0.05) uric acid concentrations in diabetic rats and no specific damage to renal proximal tubular cells was seen. Conclusions: It was concluded that M. calabura L. stem bark extract has a potential as an antihyperuricemic in diabetic rats. The recommended dose was 300 mg/kg body weight to provide a significant effect on reducing the uric acid level in diabetic rats. Our results support the use of this plant for the treatment of degenerative and inflammatory diseases.
Emerging Role of Immune Checkpoint Inhibitors in Hepatocellular Carcinoma
Authors: Longo Vito , Brunetti Oronzo , Gnoni Antonio , Licchetta Antonella , Delcuratolo Sabina , Memeo Riccardo , Solimando Antonio Giovanni , Argentiero Antonella
Published: October 2019

Hepatocellular carcinoma is the most common primary liver cancer and the fourth leading cause of cancer death worldwide. A total of 70–80% of patients are diagnosed at an advanced stage with a dismal prognosis. Sorafenib had been the standard care for almost a decade until 2018 when the Food and Drug Administration approved an alternative first-line agent namely lenvatinib. Cabozantinib, regorafenib, and ramucirumab also displayed promising results in second line settings. FOLFOX4, however, results in an alternative first-line treatment for the Chinese clinical oncology guidelines. Moreover, nivolumab and pembrolizumab, two therapeutics against the Programmed death (PD)-ligand 1 (PD-L1)/PD1 axis have been recently approved for subsequent-line therapy. However, similar to other solid tumors, the response rate of single agent targeting PD-L1/PD1 axis is low. Therefore, a lot of combinatory approaches are under investigation, including the combination of different immune checkpoint inhibitors (ICIs), the addition of ICIs after resection or during loco-regional therapy, ICIs in addition to kinase inhibitors, anti-angiogenic therapeutics, and others. This review focuses on the use of ICIs for the hepatocellular carcinoma with a careful assessment of new ICIs-based combinatory approaches.
Assessing Pancreas Transplant Candidate Cardiac Disease: Preoperative Protocol Development at a Rapidly Growing Transplant Program
Authors: St. Michel David , Donnelly Tracy , Jackson Towanda , Taylor Bradley , Barth Rolf N. , Bromberg Jonathan S. , Scalea Joseph R.
Published: October 2019

Pancreas transplant rates, despite improving outcomes, have decreased over the past two decades. This is due, in part, to ageing, increasingly co-morbid pancreas transplant candidates. There is a paucity of published data regarding coronary artery disease (CAD) in this population. To inform peri-operative management strategies, we sought to understand the frequency of CAD among recipients of pancreas transplants at our center. Informed by these data, we sought to develop a standard protocol for evaluation. A retrospective review of pancreas transplants (solitary pancreas and simultaneous pancreas-kidney) was undertaken at the University of Maryland. Transplant outcomes and frequency of cardiac disease were analyzed. Current data were compared with historic controls. Over the study period, 59 patients underwent pancreas transplantation. Coronary architecture was assessed in 38 patients (64.4%). Discrete evidence of CAD was present in 28 of 39 patients (71.7%). All pancreas candidates (n = 21) who underwent left heart catheterization (LHC) demonstrated CAD (100%). No patients experienced myocardial infarction (MI) and no deaths resulted from cardiac disease in the early post-transplant period. Pancreas transplant candidates are at high risk for CAD. At a center in which pancreas transplant rates are increasing, a rigorous cardiac work up revealed that 71.7% of assessed recipients had CAD. Although asymptomatic, 6.8% required coronary artery bypass graft (CABG). Despite increasing age and co-morbid status, pancreas transplant recipients can enjoy excellent results if protocolized preoperative testing is used.
Fasting as a Therapy in Neurological Disease
Authors: Phillips Matthew C.L.
Published: October 2019

Fasting is deeply entrenched in evolution, yet its potential applications to today’s most common, disabling neurological diseases remain relatively unexplored. Fasting induces an altered metabolic state that optimizes neuron bioenergetics, plasticity, and resilience in a way that may counteract a broad array of neurological disorders. In both animals and humans, fasting prevents and treats the metabolic syndrome, a major risk factor for many neurological diseases. In animals, fasting probably prevents the formation of tumors, possibly treats established tumors, and improves tumor responses to chemotherapy. In human cancers, including cancers that involve the brain, fasting ameliorates chemotherapy-related adverse effects and may protect normal cells from chemotherapy. Fasting improves cognition, stalls age-related cognitive decline, usually slows neurodegeneration, reduces brain damage and enhances functional recovery after stroke, and mitigates the pathological and clinical features of epilepsy and multiple sclerosis in animal models. Primarily due to a lack of research, the evidence supporting fasting as a treatment in human neurological disorders, including neurodegeneration, stroke, epilepsy, and multiple sclerosis, is indirect or non-existent. Given the strength of the animal evidence, many exciting discoveries may lie ahead, awaiting future investigations into the viability of fasting as a therapy in neurological disease.
Water-Erodible Xanthan-Acrylate-Polyurethane Antifouling Coating
Authors: Rahman Mohammad Mizanur , Zahir Md. Hasan , Mazumder Mohammad Abu Jafar , Kumar A. Madhan
Published: October 2019

Biopolymer xanthan (Xn) and its functionalized polymer xanthan acrylate (XnAc) were used to improve the antifouling properties of synthesized waterborne polyurethane (WBPU) coatings, namely, WBPU-Xn and WBPU-XnAc. XnAc was synthesized by functionalization of xanthan (Xn) using polyacrylic acid. Coating hydrophilicity, adhesive strength, and erosion all varied with the Xn and XnAc contents. A moderate erosion rate was recorded only for the WBPU-XnAc coating. A good antifouling property for longer time was found in the WBPU-XnAc coating using zinc pyrithione as a biocide in the field test.
Utility of Big Data in Predicting Short-Term Blood Glucose Levels in Type 1 Diabetes Mellitus Through Machine Learning Techniques
Authors: Rodríguez-Rodríguez Ignacio , Chatzigiannakis Ioannis , Rodríguez José-Víctor , Maranghi Marianna , Gentili Michele , Zamora-Izquierdo Miguel-Ángel
Published: October 2019

Machine learning techniques combined with wearable electronics can deliver accurate short-term blood glucose level prediction models. These models can learn personalized glucose–insulin dynamics based on the sensor data collected by monitoring several aspects of the physiological condition and daily activity of an individual. Until now, the prevalent approach for developing data-driven prediction models was to collect as much data as possible to help physicians and patients optimally adjust therapy. The objective of this work was to investigate the minimum data variety, volume, and velocity required to create accurate person-centric short-term prediction models. We developed a series of these models using different machine learning time series forecasting techniques suitable for execution within a wearable processor. We conducted an extensive passive patient monitoring study in real-world conditions to build an appropriate data set. The study involved a subset of type 1 diabetic subjects wearing a flash glucose monitoring system. We comparatively and quantitatively evaluated the performance of the developed data-driven prediction models and the corresponding machine learning techniques. Our results indicate that very accurate short-term prediction can be achieved by only monitoring interstitial glucose data over a very short time period and using a low sampling frequency. The models developed can predict glucose levels within a 15-min horizon with an average error as low as 15.43 mg/dL using only 24 historic values collected within a period of sex hours, and by increasing the sampling frequency to include 72 values, the average error is reduced to 10.15 mg/dL. Our prediction models are suitable for execution within a wearable device, requiring the minimum hardware requirements while at simultaneously achieving very high prediction accuracy.
The Impact of Technology on People with Autism Spectrum Disorder: A Systematic Literature Review
Authors: Valencia Katherine , Rusu Cristian , Quiñones Daniela , Jamet Erick
Published: October 2019

People with autism spectrum disorder (ASD) tend to enjoy themselves and be engaged when interacting with computers, as these interactions occur in a safe and trustworthy environment. In this paper, we present a systematic literature review on the state of the research on the use of technology to teach people with ASD. We reviewed 94 studies that show how the use of technology in educational contexts helps people with ASD develop several skills, how these approaches consider aspects of user experience, usability and accessibility, and how game elements are used to enrich learning environments. This systematic literature review shows that the development and evaluation of systems and applications for users with ASD is very promising. The use of technological advancements such as virtual agents, artificial intelligence, virtual reality, and augmented reality undoubtedly provides a comfortable environment that promotes constant learning for people with ASD.
Multiscale Supervised Classification of Point Clouds with Urban and Forest Applications
Authors: Cabo Carlos , Ordóñez Celestino , Sáchez-Lasheras Fernando , Roca-Pardiñas Javier , de Cos-Juez Javier
Published: October 2019

We analyze the utility of multiscale supervised classification algorithms for object detection and extraction from laser scanning or photogrammetric point clouds. Only the geometric information (the point coordinates) was considered, thus making the method independent of the systems used to collect the data. A maximum of five features (input variables) was used, four of them related to the eigenvalues obtained from a principal component analysis (PCA). PCA was carried out at six scales, defined by the diameter of a sphere around each observation. Four multiclass supervised classification models were tested (linear discriminant analysis, logistic regression, support vector machines, and random forest) in two different scenarios, urban and forest, formed by artificial and natural objects, respectively. The results obtained were accurate (overall accuracy over 80% for the urban dataset, and over 93% for the forest dataset), in the range of the best results found in the literature, regardless of the classification method. For both datasets, the random forest algorithm provided the best solution/results when discrimination capacity, computing time, and the ability to estimate the relative importance of each variable are considered together.
Hydrazine-Selective Fluorescent Turn-On Probe Based on Ortho-Methoxy-Methyl-Ether (o-MOM) Assisted Retro-aza-Henry Type Reaction
Authors: Jung Yuna , Park Nam Kyoo , Kang Jae Seung , Kim Dokyoung
Published: October 2019

Hydrazine (N2H4) is one of the most widely used industrial chemicals that can be utilized as a precursor of pesticides, pharmaceutics, and rocket propellant. Due to its biological and environmental toxicity with potential health risks, various sensing tools have been developed. Among them, fluorescence-based molecular sensing systems have been highlighted due to its simple-operation, high selectivity and sensitivity, and biocompatibility. In our recent report, we disclosed a ratiometric type fluorescent probe, called HyP-1, for the detection of hydrazine, which is based on ortho-methoxy-methyl-ether (o-MOM) moiety assisted hydrazone-formation of the donor (D)-acceptor (A) type naphthaldehyde backbone. As our follow-up research, we disclose a turn-on type fluorescent probe, named HyP-2, as the next-generation hydrazine probe. The sensing rational of HyP-2 is based on the o-MOM assisted retro-aza-Henry type reaction. The dicyanovinyl moiety, commonly known as a molecular rotor, causes significant emission quenching of a fluorescent platform in aqueous media, and its cleavage with hydrazone-formation, which induces a significant fluorescence enhancement. The high selectivity and sensitivity of HyP-2 shows practical explicabilities, including real-time paper strip assay, vapor test, soil analysis, and real water assay. We believe its successful demonstrations suggest further applications into a wide variety of fields.
Effect of Positional Embeddedness on Tour Supplier Integration: Chinese Evidence
Authors: Chen Yin , Long Yong , Bai Jianyin
Published: October 2019

This article identifies the positional attributes of travel agents (TAs) in the extended TA network in Chongqing (China), and further examines the impact of the travel agent’s positional embeddedness (measured by three indicators: degree centrality, structural hole, and closeness centrality) on tour supplier integration (TSI). We applied the random permutations method (node-level) to test theoretical hypotheses based on a sample of 51 travel agents (TAs). It was found that the target travel agent’s positional embeddedness could positively accelerate the sustainable integration of tour suppliers and the travel agent’s structural hole attribute could significantly contribute to the TSI. The results indicated that a TA can strengthen control power by increasing the positional embeddedness to facilitate high efficiency supplier integration through which TAs can encourage the supplier development of sustainability (SDS) practices, and finally to upgrade the tourism supply chain (TSC) sustainability.
Erratum: Pyke, A.T. et al. On the Home Front: Specialized Reference Testing for Dengue in the Australasian Region. Trop. Med. Infect. Dis. 2018, 3, 75
Authors: Pyke Alyssa T. , Gunn Wendy , Taylor Carmel , Mackay Ian M. , McMahon Jamie , Jelley Lauren , Waite Ben , May Fiona
Published: October 2019

The authors wish to make the following correction to Table 1 of this paper [...]
Look Who’s Talking: T-Even Phage Lysis Inhibition, the Granddaddy of Virus-Virus Intercellular Communication Research
Authors: Abedon Stephen
Published: October 2019

That communication can occur between virus-infected cells has been appreciated for nearly as long as has virus molecular biology. The original virus communication process specifically was that seen with T-even bacteriophages—phages T2, T4, and T6—resulting in what was labeled as a lysis inhibition. Another proposed virus communication phenomenon, also seen with T-even phages, can be described as a phage-adsorption-induced synchronized lysis-inhibition collapse. Both are mediated by virions that were released from earlier-lysing, phage-infected bacteria. Each may represent ecological responses, in terms of phage lysis timing, to high local densities of phage-infected bacteria, but for lysis inhibition also to locally reduced densities of phage-uninfected bacteria. With lysis inhibition, the outcome is a temporary avoidance of lysis, i.e., a lysis delay, resulting in increased numbers of virions (greater burst size). Synchronized lysis-inhibition collapse, by contrast, is an accelerated lysis which is imposed upon phage-infected bacteria by virions that have been lytically released from other phage-infected bacteria. Here I consider some history of lysis inhibition, its laboratory manifestation, its molecular basis, how it may benefit expressing phages, and its potential ecological role. I discuss as well other, more recently recognized examples of virus-virus intercellular communication.
Étude de la dissociation de carbonates naturels broyés dans l'air à la température ambiante, puis soumis à l'action de la vapeur d'eau
Authors: Grèzes-Besset Raoul , Mouysset-Espagne Marguerite
Published: October 2019

This work is integrated with systematic laboratory research on the origin of hydrothermal fluids. The present study deals with the liberation of CO₂ from natural carbonates. A thermo-gravimetric analysis apparatus with derivative recording allows us to follow the dissociation of samples :

— ground to sizes between 40 and 200 µm,

— crushed for various duration,

— crushed and then put in contact with steam.

1) A dynamic investigation on calibrated grains shows that the mesurable rates of dissociation are obtained at relatively high temperatures with respect to hydrothermal domains.

2) By the effect of grinding at ordinary temperature smithsonite and rhodochrosite dissociate quickly enough whereas magnesite and dolomite liberate CO₂ much more slowly.

3) Steam makes the dissociation of magnesite and dolomite easier, only if they were crushed for a long time. At 200° C and atmospheric pressure after 100 hours of grinding and 40 days of contact with steam, magnesite is decarbonated almost totally.

At 150°C and pressure of 5 bars, the T. G. A. and D. T. G. diagrams of magnesite + dolomite show that :

— the increase of the steam pressure, in spite of the lowering of temperature, increases considerably the rate of CO₂ release, and the longer was the grinding, the more complete is the dissociation ;

— the time of contact with the steam has a considerable consequence on the formation of brucite.
Étude de la porosité de calcites naturelles par les méthodes de l'adsorption gaz-solide
Authors: Stoeckli Fritz , Dubois J.-P.
Published: October 2019

Les méthodes classiques de l'adsorption physique à l'interface gaz-solide ont été appliquées à trois échantillons de calcites naturelles (Jura), présentant des degrés d'altération différents. Avec le néopentane à — 10° C, on obtient trois isothermes qui sont identiques lorsqu'on les réduit à l'unité de surface. Ces isothermes présentent une boucle d'hystérèse pour la désorption, ce qui indique la présence de mésopores dans le solide. La comparaison avec des isothermes obtenues dans les mêmes conditions expérimentales avec du CaCO₃ microporeux d'une part, et de très haute cristallinité d'autre part, montre que les échantillons naturels sont également microporeux. On en conclut que le spectre de la porosité originale (méso- et microporosité) n'est pas modifié lors de l'altération du solide.
Pétrologie des pyroxénites litées dans les complexes ultramafiques de l'Ariège (France) et autres gisements de lherzolites à spinelle. II. Pétrogenèse : une discussion
Authors: Conquéré Fernand
Published: October 2019

Toute question portant sur l'origine des liquides qui ont donné naissance aux pyroxénites du litage débouche nécessairement sur une discussion de l'origine première des péridotites à spinelle qui leur sont associées. Le modèle de la fusion partielle qui fait de ces roches, partout où elles affleurent, des faciès « déprimés » d'un matériau lherzolitique homogène constituant primitivement le manteau supérieur, est reconsidéré. Les conclusions de cet examen critique autant que les données de l'étude minéralogique et chimique entreprise précédemment nous conduisent à proposer, sous le terme de modèle magmatique, l'hypothèse que les complexes lités de lherzolite à spinelle résultent initialement d'une différenciation par cristallisation fractionnée dans des magmas tholéiitiques picritiques, mis en place dans les parties les plus supérieures du manteau. Nombre de ces complexes, particulièrement les gisements types de l'Ariège, et beaucoup des enclaves qui en dérivent, seraient des témoins peu ou non modifiés de la constitution lithologique et de la composition chimique primitive de ces associations d'origine magmatique.

La répartition géographique des gisements, l'identité des caractères généraux, texturaux, minéralogiques et chimiques qui y ont été relevés, militent en faveur de la conclusion que les complexes ultramafiques de lherzolites à spinelle ont initialement formé une couche continue, d'épaisseur variable, autour du globe. L'individualisation de cette zone appartiendrait donc à un stade fondamental de la différenciation du matériau terrestre, probablement aux épisodes qui aboutissent à la différenciation entre croûte et manteau. En conséquence, dans le modèle global proposé, la base de la croûte aurait été originellement constituée d'une couche également continue de roches de composition gabbroïque ou d'associations péridotites-gabbros. Ces formations, localement conservées, équilibrées sous les continents dans le faciès granulite, représenteraient les parties supérieures de complexes stratifiés passant en profondeur, sous le Moho, aux lherzolites à spinelle litées.
Localisation du fer, par voie chimique et par spectrométrie Mössbauer, dans la lépidolite du granite de Beauvoir (Massif central français)
Authors: Levillain Christian , Maurel Pierre , Ménil Francis
Published: October 2019

The localization of iron in lepidolites from « granite de Beauvoir » (Massif central, France) has been investigated using a chemical method and Mössbauer effect. The chemical method consists in the comparison between the dissolution of iron and the dissolution of other elements in hot solution of diluted HCl. The results of chemical and physical methods are in excellent agreement. Totality of iron is isomorphically substitued in the lattice of the lepidolite. In addition, Mössbauer parameters show that iron is in six-coordinate environments mainly in Fe²⁺ oxydation state. A disordered distribution of Fe²⁺ is observed for these lepidolites.
Présence de cookéite dans les bauxites métamorphiques du Dogger de la Vanoise (Savoie)
Authors: Goffé Bruno
Published: October 2019

Une chlorite hyperalumineuse et lithinifère de formule (Si₃Al) Al₄LiO₁₀OH₈ est signalée dans les bauxites métamorphiques du Dogger de la Vanoise en association avec chloritoïde˗magnésiocarpholite˗diaspore˗pyrophyllite˗paragonite˗phengite.
Preparation and crystallographic characterization of uranyl double arsenates MII (UO2AsO4)2.8H2O (MII = Zn, Ni and Co)
Authors: Nabar Mahadeo Anant , Jagannathan Iyer V.
Published: October 2019

M[II] (UO₂AsO₄)₂ • 8H₂O où M[II] = Zn, Ni et Co, ont été synthétisés par précipitation. Les paramètres de la maille tétragonale, avec Z = 2 et le groupe spatial P4₂/m, sont : a = 7,226 ± 0,02 ; c = 17,12 ± 0,06 Å pour M = Zn ; a = 7,177 ± 0,02 ; c = 17,24 ± 0,06 Å pour M = Ni ; a = 6,979 ± 0,02 ; c = 16,93 ± 0,06 Å pour M = Co.
Présence de weeksite aux Bois Noirs, massif du Forez (Loire)
Authors: Deliens Michel
Published: October 2019

Weeksite from the uranium deposit of Les Bois Noirs (Loire) is the first occurrence of that mineral in France.
Les inclusions fluides des phénocristaux des laves basaltiques du Puy Beaunit (Massif central Français)
Authors: Bilal Ahmad , Touret Jacques
Published: October 2019

Les températures d'homogénéisation des inclusions carboniques des phénocristaux des laves basaltiques du Puy Beaunit (Massif central) sont comprises entre + 10 et + 34° C ; le fluide est du CO₂ pur pour les inclusions les plus denses, mélangé à des hydrocarbures pour les inclusions les plus légères. A partir des températures de fusion du basalte, l'ordre de grandeur des pressions de formation est estimé entre 5 et 2 kb.
Identification de phases sodiques et potassiques dans la pâte d'un basalte alcalin de la chaîne des Puys
Authors: Havette Ledebt Andrée , Brousse Robert , Maury René Charles
Published: October 2019

In an alkali basalt from the cheire d'Aydat (Chaîne des Puys, French Massif central), Na and K are located in a matrix of phonolitic composition. Four minerals of very small size : sanidine, labrador, nepheline and sodalite have been identified and analysed in this matrix by microdensitometry using an ion analyser. The true mineralogy of the lava so appears to be close to its virtual (normative) one.
Crystallographic data on strontium weilite, SrHAsO4
Authors: Nabar Mahadeo Anant , Dalvi Ajit Purushottam
Published: October 2019

Strontium weilite, SrHAsO₄ est triclinique avec un groupe spatial P[-1]. Les dimensions de la maille sont : a = 7,43 ± 0,01 Å, b = 6,97 ± 0,01 Å, c = 7,40 ± 0,02 Å et α = 96° 00' ± 10', β = 103° 31' ± 10', γ = 86° 52' ± 10'.
ANALISIS BEBAN KERJA DENGAN MENGGUNAKAN METODE SWAT
Authors: Syaief Adhelia Noer
Published: October 2019

Pengukuran beban kerja adalah salah satu faktor yang dibutuhkan olehperusahaan. Karena dengan melakukan pengukuran beban kerja, perusahaandapat mengetahui beban kerja yang diizinkan sehingga dapat memperlancarefektifitas pekerja dan perusahaan. Salah satu metode yang digunakan untukmengetahui beban kerja adalah dengan melakukan analisis SWAT.Analisis ini dilakukan di PT Berjaya Sekawanindo yang merupakan industrimanufaktur yang bergerak di bidang pengalengan, khususnya pengalenganbuah dan sayuran. Pengamatan dilakukan pada bagian produksi, dimanapekerjanya dituntut untuk dapat bergerak cepat dalam tugas prosesproduksinya yang rata-rata dikerjakan secara manual. Analisis ini dilakukandengan cara pengamatan dan wawancara secara langsung dengan pekerjabagian produksi, melakukan pengukuran dengan cara pengambilan data hasilpengurutan kartu SWAT pada lima pekerja bagian produksi, analisis datadengan mengolah hasil pengurutan kartu SWAT ke dalam program MainSWAT lalu dilakukan pengkonversian antara hasil komputer denganpekerjaan yang dilakukan, dan pengambilan kesimpulan denganmengkonversikan antara nilai SWAT Rescaled dengan pekerjaan.Hasil akhir dari analisis ini memberikan gambaran mengenai beban kerjayang dirasakan oleh pekerja bagian produksi. Hasil rata-rata beban kerjayaitu orang pertama diperoleh nilai rescaled rata-rata 49,2%, orang keduadiperoleh nilai rescaled rata-rata 42,32%, orang ketiga diperoleh nilairescaled rata-rata 55,75%, orang keempat diperoleh nilai rescaled rata-rata48,07%, dan orang kelima diperoleh nilai rescaled rata-rata 47,27%.Sehingga dari keseluruhan nilai rescaled dari lima pekerja dapat diambilrata-rata yaitu 48,52%. Dari nilai tersebut dapat disimpulkan bahwa ratarata setiap pekerja bagian produksi merasa terbebani dengan pekerjaannya.Kata kunci: beban kerja, metode subjective workload, Main SWAT software
Flexibility of Metal-Organic Framework Tunable by Crystal Size at the Micrometer to Submillimeter Scale for Efficient Xylene Isomer Separation
Authors: Yang Xiao , Zhou Hao-Long , He Chun-Ting , Mo Zong-Wen , Ye Jia-Wen , Chen Xiao-Ming , Zhang Jie-Peng
Published: October 2019

Understanding, controlling, and utilizing the flexibility of adsorbents are of great importance and difficulty. Analogous with conventional solid materials, downsizing to the nanoscale is emerging as a possible strategy for controlling the flexibility of porous coordination polymers (or metal-organic frameworks). We report a unique flexibility controllable by crystal size at the micrometer to submillimeter scale. Template removal transforms [Cu
2
(pypz)
2
]·0.5
p
-xylene (MAF-36, Hpypz = 4-(1
H
-pyrazol-4-yl)pyridine) with one-dimensional channels to
α
-[Cu
2
(pypz)
2
] with discrete small cavities, and further heating gives a nonporous isomer
β
-[Cu
2
(pypz)
2
]. Both isomers can adsorb
p
-xylene to give [Cu
2
(pypz)
2
]·0.5
p
-xylene, meaning the coexistence of guest-driven flexibility and shape-memory behavior. The phase transition temperature from
α
-[Cu
2
(pypz)
2
] to
β
-[Cu
2
(pypz)
2
] decreased from ~270°C to ~150°C by increasing the crystal size from the micrometer to the submillimeter scale, ca. 2-3 orders larger than those of other size-dependent behaviors. Single-crystal X-ray diffraction showed coordination bond reconstitution and chirality inversion mechanisms for the phase transition, which provides a sufficiently high energy barrier to stabilize the metastable phase without the need of downsizing to the nanoscale. By virtue of the crystalline molecular imprinting and gate-opening effects,
α
-[Cu
2
(pypz)
2
] and
β
-[Cu
2
(pypz)
2
] show unprecedentedly high
p
-xylene selectivities of 16 and 51, respectively, as well as ultrafast adsorption kinetics (<2 minutes), for xylene isomers.
Acontecimiento histórico y transgresión fantástica en tres cuentos de Alberto Chimal
Authors: Kunz Marco
Published: October 2019

Mientras que en la gran mayoría de los productos culturales que desarrollan ficciones a partir de acontecimientos históricos predomina la representación realista, algunos cuentos del mexicano Alberto Chimal combinan la referencia a sucesos reales con el recurso al modo fantástico, en particular a la transgresión de límites lógicamente infranqueables. En "Se ha perdido una niña", Chimal desarrolla una variante metaficcional del motivo de los universos paralelos, en "Corredores" presenta el mundo continuo de las ficciones cuyos personajes no encuentran la salida a la realidad, y en "Arte" el suceso catastrófico que pone fin a la historia humana, la destrucción total del planeta Tierra, es visto por extraterrestres cuasi-divinos como si fuera un espectáculo artístico multimedial. Los tres cuentos subvierten las jerarquías de valores asignados a la realidad y a la ficción, respectivamente, tanto como los dogmas estéticos y políticos que suelen regir la vida cultural y social de la humanidad.
Editorial
Authors: Erazo Juan Carlos Carlos
Published: October 2019

Editorial
Modelo de Gestión estratégica para las Mipymes que conforman el Pasaje Artesa-nal Azuayo
Authors: Saquicela Rodas Vinicio Hernando , Erazo Álvarez Juan Carlos , Narváez Zurita Cecilia Ivonne
Published: October 2019

Recibido: 10 de agosto de 2019Aprobado: 30 de agosto de 2019La gestión estratégica resulta ser actualmente una de las herramientas de desarrollo empresarial más efectivas para el manejo de empresas e instituciones tanto públicas como privadas. Esta investigación plantea precisamente el diseño de un modelo de gestión estratégica para el Gobierno Provincial del Azuay en su proyecto denominado “Pasaje Artesanal Azuayo” que permita mejorar sus ingresos que se han visto afectados por la falta de difusión, innovación de los productos, creación de valor agregado, entre otros. La investigación utilizó un enfoque mixto de diseño exploratorio secuencial (DEXPLOS), es decir cuantitativo y cualitativo, lo que permitió establecer la necesidad de realizar convenios con organizaciones públicas y privadas que permitan generar ingresos a los 50 artesanos que conforman el proyecto productivo.
Incidencia del control interno en la gestión administrativa de las IES. Caso: Departamento de Pastoral, Universidad Politécnica Salesiana
Authors: Zamora Cabrera Erika Priscila , Narváez Zurita Cecilia Ivonne , Erazo Álvarez Juan Carlos
Published: October 2019

Recibido: 1 de septiembre de 2019Aprobado: 30 de septiembre de 2019Toda organización se plantea objetivos a cumplir a corto y largo plazo; para ello se ayuda de diferentes procesos en los cuales es necesario ejecutar controles que permitan verificar su correcto funcionamiento. Esta investigación se basó en el modelo COSO III para establecer procedimientos de control interno que permitan al proceso de Tutorías Académicas aportar de manera correcta con uno de los objetivos de la Universidad Politécnica Salesiana que es el garantizar la permanencia y titulación de todos sus estudiantes, para ello se utilizaron técnicas como encuestas, entrevistas, observación y análisis documental. Los resultados obtenidos demostraron que el proceso no cuenta con controles estratégicos en los puntos críticos, la institución no tiene manuales de funciones para este proceso, además el proceso se ejecutó de manera empírica por los estudiantes tutores. Con los procedimientos de control interno establecidos, el proceso se ejecuta de manera correcta y se evalúa continuamente.
The Influence Of English Song As Learning Materials Towards The Studentsâ€™ Pronunciation
Authors: Yulyanti Dewi , Yulianto Slamet Wahyudi , Nugraha Muhammad Anjar
Published: October 2019

This research investigated whether or not there is the influence of English song towards the studentâ€™s pronunciation. This research used a quantitative method. Research design is an experimental class and control class, two classes were selected from eleventh-grade students at SMAN 1 Ciasem Subang. The Quasi-Experimental Research was conducted in four meetings. The data were obtained by observing the teaching and learning process, test, questionnaire, and interviewing the students. The research result of the analysis quantitative and qualitative data were as follows. The analysis of quantitative data, mean score of pre-test in the experimental class was 14.44. While the mean score in the control class was 14.58. Furthermore, the mean score of the post-test in the experimental class was 82.98. While the mean score post-test in the control class was 60.56. Based on the result, the experimental class studentsâ€™ score on post-test were better in which the mean = 82.89 than their scores on pre-test the mean = 60.56 . in addition, the two-tailed value of p was 0.000 which was lower than 0.05 . in conclusion, the calculation of paired t-test showed that there was a significant difference between the pre-test and post-test scores of experimental group. The analysis of qualitative data show that used English song influence through studentsâ€™ pronunciation by observing the teaching and learning process, test, questionnaire, and interviewing the students. The students were more confident and were not afraid of making mistakes when pronunciation.
Pengaruh Latihan Small Sided Games Mengunakan Metode Interval Terhadap Peningkatan Dribbling Pemain Sepakbola
Authors: Mubarok Mochamad Zakky
Published: October 2019

Pembinaan olahraga prestasi adalah pembinaan olahraga melalui aspek-aspek latihan yakni aspek fisik, teknik, taktik, dan mental. Fokus kajian dalam penelitian ini adalah penerapan latihan small sided games menggunakan metode latihan interval dalam meningkatkan keterampilan dribbling pemain sepakbola. Penelitian ini menggunakan metode eksperimen dengan one-group pretest-posttest design. Teknik pengambilan sampel menggunakan sampling jenuh. Populasi dan sampel berjumlah 11 pemain dari Unit Kegiatan Mahasiswa Sepakbola di STKIP Nahdlatul Ulama Indramayu. Hasil penelitian menyatakan terdapat pengaruh yang signifikan dari latihan small sided games menggunakan metode interval terhadap peningkatan keterampilan dribbling pemain sepakbola.
UNDERSTANDING OF TEACHER IN PEKAN DISTRICT ON 21st CENTURY LEARNING
Authors: Huang Ji Xiang , Hj Iksan Zanaton
Published: October 2019

The purpose of the study is to identify the level of understanding of teachers in 21st Century Learning. 21st Century Learning is introduced and carried out by the Malaysia Education Ministry in schools. The study used a quantitative approach where questionnaires are used to collect data. The respondents consisted of 385 primary school teachers that were teaching in Pekan District. The data are analyzed by using Statistical Packages for The Social Science (SPSS) version 23. The descriptive data used are mean and standard deviation while the inferential data used are independent t-test and one-way ANOVA test. The data collected are analyzed by 6 constructs such as the common knowledge of 21st-century learning, communication, collaboration, critical thinking, creativity, positive values, and etiquette. The inferential data showed there are no significant differences between male and female teachers on the level of understanding of teachers on the 21st Century Learning. Meanwhile, there is a significant difference in the level of understanding of teachers on the 21st Century Learning by the experience of teaching. The study helps teachers and schools to carry on adaptation on their teaching to more toward 21st-century learning. The study also helps the Malaysia Education Ministry to identify the advantages and weaknesses of the 21st Century Learning Kit. The improvement done will help ensure the 21st Century Learning can be practiced by teachers in school.
THE RELATIONSHIP BETWEEN HEADTEACHERS’ MULTIDIMENSIONAL LEADERSHIP PRACTICES WITH TEACHERS COMMITMENT UNDER SCHOOL TRANSFORMATION PROGRAM 2025 (TS25)
Authors: Md Jais Noraziyanah , A. Hamid Aida Hanim
Published: October 2019

The School Transformation Program 2025 (TS25) is an initiative of the Ministry of Education Malaysia to increase student success in schools through effective leadership, competent teachers and strong commitment of the Parent-Teacher Association (PIBG). However, at the same time, the literature review shows that the percentage of teachers’ commitment to some schools in Malaysia is still at a moderate level. The causes of decreasing teacher commitment in school include one-way communication, interpersonal relationship and weak leadership style among administrators toward the organization. Therefore, this article determines to identify and discusses findings the practice of leadership multidimensional among headteachers and its relationship with teacher's commitment under the School Transformation Program 2025 (TS25). A descriptive quantitative study and involved 33 respondents from two Primary School Transformation Program 2025 (TS25) in Kuala Lipis Pahang selected through the stratified sampling technique. This study using questionnaires as a research instrument. Pearson Correlation test was used to determine the relationship between multidimensional leadership practices among headteachers with a teacher's commitment. The research finding showed that the leadership multidimensional practices among headteachers' under the School Transformation Program 2025 (TS25) were high (mean = 3.48). The research finding also showed that the level of teacher's commitment to primary schools involved in TS25 was moderate (mean = 2.72). Therefore, the findings should be extended to the primary and secondary schools of the School Transformation Program 2025 (TS25) in Malaysia to test the effectiveness of the Multidimensional Leadership among headteachers to enhance teacher commitment to the organization.
CORPORATE SOCIAL RESPONSIBILITY AS A KEY OF STABLE DEVELOPMENT: ANALYSIS OF THE ENTERPRISES OF OIL AND GAS INDUSTRY
Authors: Ionin Yevhen , Tarasenko Liliia
Published: October 2019

Social responsibility of business takes a special place in the terms of modern development strategy of the economy of Ukraine. This responsibility suggests such direction of the enterprise activity, which takes into account not only the personal interests of the company, but also the needs of society. The continuation of European integration processes, the exit of companies into international markets require from the business entities appropriate openness and transparency, coverage of the goals of achieving the goal of the enterprise, the tools at which such a goal is achieved. The multidimensional nature of links, which are arising during the operational activity, leads to the existence of significant impact on the internal and external environment of the enterprise. Issues of corporate social responsibility of public-interest enterprises, which, in particular, are part of the oil and gas industry, are of particular relevance. The article analyses the current state of carrying out socially responsible activity at foreign and domestic enterprises of the oil and gas industry. The components of corporate social responsibility and their impact on the enterprise` functioning and on satisfaction of social needs are investigated. The socially responsible activity has positive nature, however, at the same time, there are certain barriers of the strategy` implementation within the framework of the mentioned activity, among which financing is a key issue that requires the enterprise to properly plan and analyse the costs of socially responsible doing business. The need for planning and evaluating corporate social responsibility programs is highlighted in the article. Using the example of gas transportation enterprise, the SWOT-analysis as an instrument of obtaining information for justified decision-making is reviewed.
Una nueva gobernanza en el Fonadin como estrategia para eficientar las inversiones en infraestructura
Authors: Ordóñez Bustos Daniel César
Published: October 2019

Contar con la infraestructura necesaria en cuanto a cantidad y calidad, le permite a cualquier país instrumentar programas con alto impacto económico y social. En México hay un déficit importante en la materia, razón por la cual ocupa el lugar 62 en el índice de competitividad del World Economic Forum, debido entre otros factores a la disminución de la inversión como porcentaje del producto interno bruto (PIB) desde 2010. De ahí la demanda de recursos, en donde el Fondo Nacional de Infraestructura (Fonadin) tiene un papel relevante como instrumento del gobierno federal en materia de inversión pública. Sin embargo, el 67 % de sus recursos se han canalizado a apoyos no recuperables y, por ello, requiere una nueva gobernanza, de modo que tome decisiones sobre criterios de eficiencia y viabilidad financiera.
Systems Theory and Puzzles of Legal Culture
Authors: Winczorek Jan
Published: October 2019

Legal culture is a concept as central to legal studies and sociology of law as difficult to define. It aims to serve important theoretical needs but it is also responsible for some puzzles that trouble legal and socio-legal scholars. Some of them are quite famous: the puzzle of the nature of Japanese litigiousness, the puzzle of differing German and Dutch legal cultures, or, recently, the issue of cultural defence. Some are lesser known, like the multitude of courts’ adjudicating strategies in Poland’s allegedly unitary legal culture. The paper argues that the problems of such nature are a conceptual artefact, a result of objectifying understanding of legal culture as a phenomenon. It is stressed that in such studies more weight should be put on the immediate, procesual nature of investigated phenomena. In order to support these claims, conceptual machinery of systems theory is utilised. First, a general view of N. Luhmann regarding the notion of culture is accepted and applied to the idea of legal culture. Further it is demonstrated how the aims served by the notion of legal culture can be achieved by appealing to such theoretical concepts as structural coupling, first- and second- order observation, and above all – temporal nature of social systems. A general conclusion of the paper is that in the study of “legal culture” an evolutionary perspective is unavoidable.