bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cinco tensores de curvatura. Una aproximación a la topología espacio-temporal contemporánea
Authors: Longo Mariángeles , Ríos Irene 
Published: December 2019

La cultura contemporánea se identifica con sus propias formas de producción y reproducción del espacio. Un proyecto absolutamente visual de dimensión imaginaria. Lo que aquí se busca exponer es la emergencia de una nueva topología espacio temporal a través del análisis de ciertas estrategias proyectuales cuyas formas y estructuras organizativas se redefinen lógica y tácticamente para comprender las dinámicas complejas del mundo contemporáneo.<br /><br />A través de cinco estrategias proyectuales concretas, “Cinco Tensores de Curvatura Contemporáneos”, se irá trazando una lectura transversal que introduce modelos y discursos provenientes del campo de la sociología y la arquitectura. Los tensores de curvatura denominados así por el sociólogo Luis Castro Nogueira en el libro “La risa del espacio” (1997), hacen referencia a prácticas materiales cuyos códigos visuales pliegan y tensan lo que fue el primer momento espacial moderno. <br /><br />Todo este proceso de gradación espacial concluye en el espacio virtual. Una tipicidad sintética y simulada por dispositivos electrónicos en la que sujeto, objeto y medio devienen en una progresiva condición inmaterial. Lejos de establecer modelos absolutos estos desplazamientos topológicos buscan instaurar una actitud crítica necesaria para proyectarse hacia futuros escenarios.
Influence of salts and pcr inhibitors on the amplification capacity of three thermostable DNA polymerases
Authors: Davalieva Katarina , Efremov Georgi D. 
Published: December 2019

The full potential of PCR as a rapid DNA detection method, is limited by inhibition of thermostable DNA polymerases by components in biological samples and substances used for purification of template DNA. We compared the inhibition effect of blood, phenol and various ions on Taq, Tth and Tne thermostable DNA polymerases prepared by us. The amplification capacity of DNA polymerases was tested on the amplification of a 631 bp fragment of a â- globin gene from a 100 ng DNA template under the optimal PCR buffer. Blood above 1 % (v/v) and phenol above 0.1 % (v/v) inhibited Taq, while Tne and Tth tolerated 10 to 30 times more. The inhibitory effect of ions is lowest for the Tth DNA polymerase, followed by Taq and Tne DNA polymerase. We conclude that the PCR inhibiting effect of some substances to Taq DNA polymerase can be eliminated by the use of a more resistant thermostable DNA polymerase, such as Tth or Tne DNA polymerases.
Behavior of transport and separation of lanthanum, yttrium and lutetium metal ions through celluose fiber supported solid membrane
Authors: Gaikwad Abaji G 
Published: December 2019

A novel idea explored was to study the behavior of transport and separation of lanthanum, yttrium and lutetium metal ions by using cellulose fiber supported solid membrane. The cellulose fiber membrane was prepared by chemical modification of cellulose fiber by esterification reaction with citric acid. Different experimental variables such as time variation, membrane length, stirrings of source and receiving phase, pH of source phase, different stripping agents such as nitric acid, hydrochloric acid, sodium nitrate, ammonium thoicyanate, D2EHPA, TBP, Aliquat-336, tartaric acid, EDTA, organic solvents, etc in receiving phase were explored. Pre-concentration of lanthanum, yttrium and lutetium metal ions from dilute solution was carried out.
Artemisinins and synthetic peroxides as highly efficient antimalarials
Authors: Opsenica Dejan Milos , Šolaja Bogdan Aleksandar 
Published: December 2019

Malaria is devastating disease and global public health problem, with nearly half world population exposed to risk. Illness is caused by five Plasmodium species, P. falciparum, P. ovale, P. vivax, P. malarie and P. knowlesi, from which P. falciparum is the most serious one causing cerebral malaria and is the major reason for malaria mortality. Vaccine against malaria is not expected in the near future and chemotherapy remains as most feasible alternative for treatment of the disease. The development of widespread drug-resistance to chloroquine (CQ), the most successful antimalarial drug up to date, has resulted in severe health issues for countries in malaria endemic regions. Organic peroxides, like artemisinins, 1,2,4-trioxanes, 1,2,4-trioxolanes, 1,2,4,5-tetraoxanes and their chimeras, are the best choice for malaria treatment nowadays. These therapeutics are fast acting, non-toxic, low costing and without reported data of parasite resistance. Stability of peroxide bonds enables synthetic comfort and resulting in diversity of synthesised structures. The most important classes of peroxide antimalarials with promising representatives are reviewed and possible mechanisms of action were presented in details.
Thermal and optical properties of new poly(amide-imide)-nanocomposite reinforced by layer silicate based on chiral <i>n</i>-trimellitylimido-L-valine
Authors: Faghihi Khalil , Soleimani Masoumeh , Nezami Shabnam , Shabanian Meisam 
Published: December 2019

Two new samples of poly(amide-imide)-montmorillonite reinforced nanocomposites containing N-trimellitylimido-L-valine moiety in the main chain were synthesized by a convenient solution intercalation technique. Poly(amide-imide) (PAI) 5 as a source of polymer matrix was synthesized by the direct polycondensation reaction of N-trimellitylimido-L-valine (3) with 4,4′-diaminodiphenyl ether 4 in the presence of triphenyl phosphite (TPP), CaCl2, pyridine and N-methyl-2-pyrrolidone (NMP). Morphology and structure of the resulting PA-nanocomposite films (5a) and (5b) with 10 and 20 % silicate particles were characterized by FTIR spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effect of clay dispersion and the interaction between clay and polymeric chains on the properties of nanocomposite films were investigated by using Uv-vis spectroscopy, thermogravimetric analysis (TGA) and water uptake measurements.
Air pollution study in Macedonia using a moss biomonitoring technique, ICP-AES and AAS
Authors: Barandovski Lambe , Stafilov Trajce , Sajn Robert , Frontasyeva Marina , Baceva Katerina 
Published: December 2019

In the framework of the International Cooperative Programme on Effects of Air Pollution on Natural Vegetation and Crops under the auspices of the United Nations Economic Commission for Europe (UNECE-ICP Vegetation) Convention on Long-Range Transboundary Air Pollution (LRTAP), in 2002 and 2005, a moss biomonitoring technique was applied to air pollution studies in the Republic of Macedonia. The third moss survey took place in August and September 2010 when 72 samples of the terrestrial mosses Homalothecium lutescens and Hypnum cupressiforme were collected over the territory of the Republic of Macedonia, using the same sampling network grid as for the previous surveys. Using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and atomic absorption spectrometry (AAS), a total of 18 elements (Al, Ba, Ca, Cd, Cr, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, P, Pb, Sr, V and Zn) were determined. To reveal hidden multivariate data structures and to identify and characterize different pollution sources, Principal Component Analysis was used. Distributional maps were prepared to point out the regions most affected by pollution and related to known sources of contamination. As in the previous surveys, the regions near the towns of Skopje, Veles, Tetovo, Radoviš and Kavadarci were found to be most affected by pollution, even though the median elemental content in the mosses in 2010 for Cd, Cr, Cu, Ni, Pb and Zn was slightly lower than in the previous surveys. For the first time, P content in the moss samples was analyzed, and a higher content of this element as well as K in the mosses was observed in the agricultural regions of the country.
Efek Kerja Bersepada Statis selama 45 Menit terhadap Penurunan Kadar Low Density Lipoprotein dalam Darah pada Mahasiswa 2011 Program Studi Ilmu Keolahragaan Universitas Negeri Jakarta
Authors: Ratna Tri Astri , Junaidi Junaidi , Setiakarnawijaya Yasep 
Published: December 2019

Abstrak: Penelitian skripsi ini bertujuan untuk mengetahui efek kerja bersepeda statis 45 menit terhadap penurunan kadar Low Density Lipoprotein dalam darah pada mahasiswa 2011 Program Studi Ilmu Keolahragaan Universitas Negeri Jakarta. Penelitian ini dilaksanakan di laboratorium Somatokinetika FIK UNJ, pada tanggal 12 Desember 2012. Metode yang digunakan adalah eksperimen dengan â€œone group pretest-posttest designâ€. Teknik pengambilan sampel menggunakan teknik purposive sampling. Sampel berjumlah 10 orang dari jumlah keseluruhan populasi 30 orang. Instrumen yang digunakan adalah Cabasmira. Teknik analisis data yang digunakan adalah statistik uji-t. Hasil perhitungan kadar low density lipoprotein awal dan akhir setelah melakukan kerja bersepeda statis diperoleh nilai selisih rata-rata (MD) 3,7 dengan nilai perbedaan standar deviasi difference (SDD) 4,81 dan nilai perbedaan standar kesalahan mean (SEMD) 1,60. Hipotesis statistik untuk tes akhir kelompok Ho ditolak jika th â‰¥ tt dan Ho diterima jika th < tt. Hasil perhitungan diperoleh th atau thitung sebesar 2,31 dan nilai tt atau ttabel sebesar 2,26 dengan taraf signifikan 5%. Dengan demikian th â‰¥ tt maka hipotesis nihil ditolak dan hipotesis kerja diterima.
Kata Kunci : Efek kerja, Sepeda statis, low density lipoprotein.
Arithmetics based on computability logic
Authors: Japaridze Giorgi 
Published: December 2019

This paper is a brief survey of number theories based on em computability logic (CoL) a game-semantically conceived logic of computational tasks of resources. Such theories, termed em clarithmetics, are conservative extensions of first-order Peano arithmetic.

The first section of the paper lays out the conceptual basis of CoL and describes the relevant fragment of its formal language, with so called parallel connectives, choice connectives and quantifiers, and blind quantifiers. Both syntactically and semantically, this is a conservative generalization of the language of classical logic.

Clarithmetics, based on the corresponding fragment of CoL in the same sense as Peano
arithmetic is based on classical logic, are discussed in the second section. The axioms and inference rules of the system of clarithmetic named ${\bf CLA11}$ are presented, and the main results on this system are stated: constructive soundness, extensional completeness, and intensional completeness.

In the final section two potential applications of clarithmetics are addressed: clarithmetics as declarative programming languages in an extreme sense, and as tools for separating computational complexity classes. When clarithmetics or similar CoL-based theories are viewed as programming languages, programming reduces to proof-search, as programs can be mechanically extracted from proofs; such programs also serves as their own formal verifications, thus fully neutralizing the notorious (and generally undecidable) program verification problem. The second application reduces the problem of separating various computational complexity classes to separating the corresponding versions of clarithmetic, the potential benefits of which stem from the belief that separating theories should generally be easier than separating complexity classes directly.
He’s Multiple-Scale Solution for the Three-dimensional Nonlinear KH Instability of Rotating Magnetic Fluids
Authors: El-Dib Yusry Osman , Mady Amal A 
Published: December 2019

This paper elucidates a trend in solving nonlinear oscillators of the rotating Kelvin-Helmholtz instability. The system is constituted by the vertical flux or the horizontal flux. He’s multiple-scales perturbation methodology has been applied and therefore the system is represented by a generalized homotopy equation. This approach ends up in a periodic answer to a nonlinear oscillator with high nonlinearity. The cubic-quintic nonlinear Duffing equation is obligatory as a condition to uniformly answer. This equation is employed to derive the stability criteria. The transition curves are plotted to investigate the stability image. It's shown that the angular velocity suppresses the instability. The tangential flux plays a helpful role, whereas the vertical field encompasses a destabilizing influence. Within the existence of the rotation, the velocity ratio reduces stability configuration.
Implementación de un sistema de control interno en la empresa PyC Tecnología Limitada
Authors: Navarrete esparza Marcelo andrés , Carrasco Miguel Urrutia 
Published: December 2019

La presente investigación tuvo como propósito estudiar el sistema de control interno de una PYME existente en la Ciudad de Concepción ? Chile. El enfoque del trabajo es cualitativo sobre la base de un caso de estudio de una empresa PYME perteneciente al sector de servicios a la industria minera en Chile. Se llevó a cabo entrevistas y encuestas semi estructuradas aplicada a distintos personas de la empresa, también se utilizó estudios referentes a las empresas PYME en Chile y en Latinoamérica, su problemática y continuidad en sus negocios. Los resultados de la investigación para este caso de estudio indican por un lado, que aun cuando ella logra sostenerse en el tiempo y administrar sus recursos financieros para continuar desarrollando sus actividades, por otro lado, su sistema de control es débil dado que el foco de atención de los dueños de la entidad se centran sólo en las operaciones normales de su negocio y en menos medida, en la información interna que sustentan los flujos de información. Una PYME que ha incrementado sus operaciones y comienza a estabilizarse, necesita que su información (manual y/o digital) sea administrada y mantenida bajo ciertos procedimientos y controles a objeto de salvaguardar los activos y recursos, contribuyendo de esta manera a la sustentabilidad y crecimiento de la empresa en el tiempo.
Early Detection of Prevention Coronary Heart Disease in Baktijaya Village, Sukmajaya District Depok City, West Java
Authors: Sitompul Hidayani fazriah 
Published: December 2019

Penyakit tidak menular secara global merupakan penyebab kematian nomor satu setiap tahunnya yaitu penyakit kardiovaskular khususnya penyakit jantung koroner. Penyakit jantung koroner merupakan masalah kesehatan yang harus diupayakan dengan melakukan upaya kuratif namun harus dilakukan upaya preventif dan promotif. Tujuan penelitian ini untuk mengetahui deteksi dini terhadap penyakit jantung koroner di Kelurahan Baktijaya Kecamatan Sukmajaya Kota Depok. Metode penelitian ini merupakan studi deskripsi dengan sampel 54 orang. Hasil pemeriksaan tahap pertama menunjukan tingginya risiko potensi terkena penyakit kardiovaskular yaitu kurang dalam beraktifitas fisik (69%), memiliki riwayat keluarga yang terpapar rokok (65%), kolesterol tidak normal (57%). Hasil pemeriksaan kedua menunjukan hasil kolesterol dan pemeriksaan indeks masa tubuh sebesar 63% dan 55,6% berisiko terkena penyakit kardiovaskular, sedangkan tekanan pemeriksaan darah sistolik dan gula darah cenderung menurun potensi risiko terkena penyakit kardiovaskular, yaitu sebesar 70.4% dan 81,5%. Dapat disimpulkan pola pencegahan perilaku pencegahan kardiovaskular melalui pemberian informasi belum sepenuhnya berhasil menurunkan seluruh potensi terkena penyakit jantung jangka panjang.
Discovery of Common Putative Drug Targets and Vaccine Candidates for Mycobacterium tuberculosis sp.
Authors: Nalamolu Ravina Madhulitha , Pasala Chiranjeevi , Katari Sudheer Kumar , Amineni Umamaheswari 
Published: December 2019

ABSTRACT
Mycobacterium tuberculosis is the bacteria that cause tuberculosis (TB), an infection that usually affects the lungs and can be fatal without proper treatment. Combating through available drugs became a difficult task due to drug resistance and lack of appropriate common targets against genetically diverse strains. Since to improve efficacy, the effective targets should be identified and critically assessed. In the study, we aim to predict the potential novel targets against M. tuberculosis strains by employing in silico approach. The complete proteomic datasets of 23 M. tuberculosis strains was comparatively processed by executing R-scripts and eventually predicted 3906 'conserved gene products'. Further, we performed subtractive proteomic approach in search of promising crucial targets. Consequently, eight enzymes and two membrane proteins were prioritized as new therapeutic and vaccine targets respectively which found to have more interactors in network with high-confidence score, druggability and antigenicity. Therefore, outcomes of the study emphasize the importance of new targets may counteract with false-positive/negatives and facilitate appropriate potential targets for a new insight of reliable therapeutic development.
Key words: Mycobacterium tuberculosis, Multidrug resistance tuberculosis and Extensive drug resistant tuberculosis.
Emotional component of university students’ professional consciousness in the present-day media discourse space
Authors: Guslyakova A. V. , Guslyakova N. I. 
Published: December 2019

The emotional component of the university students’ professional consciousness is a reflection of the subjects’ attitude towards their academic and professional activity, to themselves as future specialists, or to individual professionally significant aspects of their personality and activity. Affective (emotional) structures play a crucial role in the individual’s consciousness as they correlate with cognitive mechanisms of human consciousness and build “a unified system or unity of affect and intellect”. Affective components of consciousness consist of emotions, moods, feelings and possess a number of functions that define success and efficiency of the individual’s activity: evaluation and prompting functions, regulating and synthesizing functions, expressive, activation and signal functions. It is essential to mention that successfully managing the affective component of university students’ consciousness may define their attitude towards the whole academic process, their future career and life itself. Contemporary media discourse environment that people are living in today, no doubt, makes an impact on young people’s affects, emotions and values. Therefore, the main aim of this research is to identify and evaluate how far the present-day media world influences the emotional component of students’ consciousness, whether this impact changes young people’s attitude towards their education and career goals and which affects and emotions students experience when referring to the space of media discourse in search of knowledge related to professional issues.The experiment, conducted by the authors of this paper, has covered university students of three higher education institutions – Moscow State Pedagogical University, RUDN University and South Ural State Humanitarian Pedagogical University in two regions of Russian Federation (Moscow and Chelyabinsk regions) which also helped to see the similarities and differences in the young people’s affective perception of their academic and professional achievements through the prism of the new media discourse environment. Recommendations on how to handle the emotional and value components of students’ consciousness (while teaching them at the university) were suggested in the conclusion of the research.
Assessment of left ventricular diastolic flow in hypertrophic cardiomyopathy by 4D FLOW MRI
Authors: Glazkova E. Yu. , Dariy O. Yu. , Aleksandrova S. A. , Makarenko V. N. , Berseneva M. I. , Bockeria L. A. 
Published: December 2019

Objective. To assess phase-contrast MRI in the evaluation of left ventricular hemodynamics changes in various forms of hypertrophic cardiomyopathy.Materials and methods. 11 patients were examined: without pathology of the cardiovascular system (n = 3), with apical (n = 3), diffuse-septal (n = 2) and focal-basal (n = 3) types of hypertrophic cardiomyopathy. All patients underwent MRI of the heart with an additional phase-contrast sequence of the left ventricular area. Postprocessing carried out in the 4D FLOW application (Siemens).Results. Data were obtained on the geometry and dynamics of vortex diastolic flows in the left ventricular of all patients. In patients with hypertrophic cardiomyopathy, an increase in the distance to the center of the vortex and a decrease in the normalized area and peak velocity of the vortex is determined. The diffuse-septal type is characterized by a minimal vortex peak velocity; apical type - by the maximum vortex sphericity index. For patients with a focalbasal type of hypertrophic cardiomyopathy the maximum changes in blood flow are determined in late diastole (absence of vortexes).Conclusion. 4D FLOW Phase-contrast MRI allows identifying and assessing LV vortical flow. Quantitative analysis can be used to characterize the remodeling of LV blood flow of various types of hypertrophic cardiomyopathy.
ACADEMICIAN BORIS ALEKSANDROVICH PETROV (1898–1973)
Authors: Kurygin A. A. , Semenov V. V. , Tarbaev I. S. 
Published: December 2019

The authors declare no conflict of interest.The authors confirm that they respect the rights of the people participated in the study, including obtaining informed consent when it is necessary, and the rules of treatment of animals when they are used in the study. Author Guidelines contains the detailed information.
Improved Particle Swarm Optimization of Three-Dimensional Path Planning for Fixed Wing Unmanned Aerial Vehicle
Authors: Dang Giang Thi - Huong , Vuong Quang - Huy , Ha Minh Hoang , Pham Minh - Trien 
Published: December 2019

Path planning for Unmanned Aerial Vehicle (UAV) targets at generating an optimal global path to the target, avoiding collisions and optimizing the given cost function under constraints. In this paper, the path planning problem for UAV in pre-known 3D environment is presented. Particle Swarm Optimization (PSO) was proved the efficiency for various problems. PSO has high convergence speed yet with its major drawback of premature convergence when solving large-scale optimization problems. In this paper, the improved PSO with adaptive mutation to overcome its drawback in order to applied PSO the UAV path planning in real 3D environment which composed of mountains and constraints. The effectiveness of the proposed PSO algorithm is compared to Genetic Algorithm, standard PSO and other improved PSO using 3D map of Daklak, Dakrong and Langco Beach. The results have shown the potential for applying proposed algorithm in optimizing the 3D UAV path planning.
Keywords: UAV, Path planning, PSO, Optimization.