bluuebunny/crossref_metadata_2025 huggingface dataset:
Utilization of Reduced Haploid Vigor for Phenomic Discrimination of Haploid and Diploid Maize Seedlings
Authors: Vanous Kimberly , Jubery Talukder Zaki , Frei Ursula K. , Ganapathysubramanian Baskar , Lübberstedt Thomas
Published: April 2019

Core Ideas

There are many potential benefits of incorporating embryo culture into a doubled haploid program.

There is no known non‐transgenic method of selecting haploid embryos following embryo culture.

Our goal was to establish a non‐transgenic haploid selection method following embryo culture.

These methods allow early haploid selection based on differential root growth features.

Potential benefits of incorporating embryo culture (EC) into a doubled haploid (DH) program, including shortening the breeding cycle and increasing chromosome doubling rates, make the laborious and tedious task of excising embryos worth the effort. Difficulties arise during embryo selection considering the marker gene R1‐nj, which is typically used in DH programs, is not expressed in early stages after pollination. Although transgenic approaches have been implemented to bypass this issue, there is so far no known non‐transgenic method of selecting haploid embryos. The findings of this study reveal methods of selecting haploid embryos that allow the possibility of incorporating EC into a DH program without using transgenic inducers. The best performing method involves a machine‐learning classifier, specifically a support vector machine, which uses primary root lengths and daily growth rates as traits for classification. Selection by this method can be achieved on the third day after germination. By this method, an average false negative rate of 2% and false positive rate of 9% was achieved. Therefore, the methods presented in this research allow efficient and non‐transgenic selection of haploid embryos that is simple and effective.
Evaluation of personnel readiness to implementing of electronic business technologies
Authors: Vilkhivska Olga , Vovk Marina
Published: April 2019

The technology for evaluating the personnel readiness for the implementing of e-business technologies is developed, which includes the following steps: development of a list of competencies reflecting staff readiness for the introduction of e-business technologies; building a questionnaire to assess the level of development of staff competencies for each e-business technology; formation of a matrix of pairwise comparisons to determine the relative importance of competencies; personnel questioning; survey of experts; verification of the degree of consistency of expert opinions; definition of integral assessment of personnel readiness. The value of the developed technology is in determining the most important personnel competencies required to interact with the selected e-business technologies in business processes. The developed technology is tested at the enterprises of the machine-building industry of Ukraine. The selection of the most competent personnel for interaction with the e-business technologies in specific business processes is based on the developed technology. The competencies that are specific and necessary for the use of specific e-business technology are identified and evaluated. The technology has been tested at the machine-building enterprises of Ukraine. Assessment of personnel according to the requirements is implemented. The obtained results of the personnel competence before the introduction of e-business technologies in the business processes for enterprises are from 46.77% to 86.58%. Received results indicate a rather high level of competence of the personnel at the enterprises under study.
Diurnal water use patterns for low-cost houses with indigent water allocation: a South African case study
Authors: Pretorius Dian , Crouch Melissa Lauren , Jacobs Heinz Erasmus
Published: April 2019

The diurnal water use patterns are of interest to hydraulic modellers, as these patterns are required for the design of water distribution systems. An extensive body of literature is available with regard to daily, weekly and seasonal diurnal water use patterns of typical suburban houses. However, the characteristics of South African low-cost houses, the socio-economic status of the consumers and the level of water service to such houses differs from typical western suburban houses reported on elsewhere. Notable differences include the limited access to heated water and negligible garden irrigation at the low-cost houses. Knowledge of water use in low-cost houses, which are prevalent in South Africa, is limited. To reduce this lack of knowledge, approximately 2.5 million flow records were collected over a period of 3 years from a sample of 14 low-cost houses as part of this empirical case study. Subsequently, a diurnal water use pattern was constructed for the selected low-cost houses at 15-minute and 1-hour resolution. The diurnal pattern is useful for hydraulic modellers when data that represent extended period time simulation of water networks in low-cost housing developments is required.
Effect of pre-ozonation on N-nitrosodimethylamine (NDMA) formation from four drinking-water sources during subsequent chloramination
Authors: Liao X. B. , Zhao L. , Shen L. L. , Chen M. Y. , Chen C. , Li F. , Yuan B. L. , Zhang X. J.
Published: April 2019

Ozone has been widely used for water treatment all over the world. This study investigated the effects of pre-ozonation on N-nitrosodimethylamine (NDMA) formation from four drinking-water sources during subsequent chloramination. Moreover, relationships between NDMA and water-quality parameters (dissolved organic carbon (DOC), dissolved organic nitrogen (DON), hydrophobic fractions (HFs), positive-charged fractions (PCFs), ultraviolet absorbance at 254 nm wavelength (UV254), ammonia) were determined. The results indicated that NDMA formed directly by ozonation, but the concentrations (5.7–37.8 ng/L) were much lower than during chloramination (25.3–193 ng/L). Pre-ozonation slightly augmented NDMA formation from reservoirs, while it facilitated NDMA precursor destruction in the lake and river. The river was rich in organic matter, its DOC concentration was up to 4.97 mg/L, while the DON/DOC ratio (4.68%) was low; the lake possessed the most organic nitrogen and highest DON/DOC ratio (10.76%). HFs in reservoir #2 were low (1.27 mg/L), and the HFs/DOC ratio was especially high (73.4%). PCFs constituted 48.5–72.1% of DOC. UV254 values were in the range 0.081–0.175 cm−1. The ammonia concentration was high in the lake water (0.29 mg/L), while that in reservoir #2 was only 0.08 mg/L. There was a strong correlation between NDMA formation and the removal of ammonia, DON and PCFs.
Investigation of shock-wave processes in a bubble liquid during the interaction with a barrier
Authors: Agisheva U.O. , Bolotnova R.Kh. , Galimzianov M.N.
Published: April 2019

The parametric analysis the process of reflection a shock wave in a gas-liquid mixture from solid wall is conducted. The results are compared with the experimental data for mixture of water and nitrogen bubbles.
Investigation of the applicability domains of the bubble cluster mathematical model
Authors: Nasibullaeva E.Sh. , Akhatov I.Sh.
Published: April 2019

The mathematical model of a bubble cluster subjected to an acoustic field is investigated. In this model the cluster is considered as a large drop containing a liquid and a set of microbubbles. Areas of applicability of the mathematical model of the bubble cluster in the parameter space (α, R_0) are constructed, where α is the bubble concentration in the cluster; R_0 is the initial radius of the cluster.
Dynamic blocking and dispersions rheology at phase transition
Authors: Akhmetov A.T. , Mavletov M.V. , Valiev A.A.
Published: April 2019

In the flow in the microchannel of reverse water hydrocarbon emulsions, it is found the dynamic blocking effect. The essence of the effect is that the flow of the emulsion through the section of the microchannel stops with time, despite the permanent pressure drop. The difference of this work from previous ones is that for the experiments was prepared the emulsion of simple chemical compounds. For visualization of the structure formed in the capillary after blocking, the dispersed phase was introduced fluorescing component. It is studied and compared the rheological properties of the emulsion and formed from it in the phase transition suspension.
Mathematical modeling of Couette flow in anomalous thermoviscous liquid
Authors: Khizbullina S.F.
Published: April 2019

The steady flow of anomalous thermoviscous liquid between the coaxial cylinders is considered. The inner cylinder rotates at a constant angular velocity while the outer cylinder is at rest. On the basis of numerical experiment various flow regimes depending on the parameter of viscosity temperature dependence are found.
A Pilot Programme for Tuberculosis Screening in Immigrants at Primary Care
Authors: Bellmunt-Bardas Josep M. , Pedro-Botet Juan , Chillarón Juan J. , Lund-Palau Helena , Caylà Joan A.
Published: April 2019

Background:

Immigrants from countries with a high prevalence of Tuberculosis (TB) may constitute a source of infection.

Objective:

The aim of the present study was to describe a Tuberculosis (TB) screening programme at a primary health care centre directed at immigrants from countries with a high prevalence of TB.

Methods:

This was a descriptive study conducted at a primary health centre in Barcelona between 2009 and 2012 for immigrants from countries with a TB incidence > 100/100,000. They were invited to join the TB detection programme on registering at the primary health care centre when a reference nurse conducted a survey on socio-health data, performed a Tuberculin Skin Test (TST) and requested a chest X-ray. Interferon Gamma Release Assays (IGRA) were applied in individuals with positive TST or an abnormal X-ray.

Results:

Ninety-one (70.5%) of 129 individuals, aged 29.8 ± 9.8 years, who entered the programme, were men, 60 (46.5%) were from Pakistan and 3 reported previous TB. Eighty-six (66.7%) immigrants completed the study protocol. Three cases (2.3%) of TB were diagnosed and 29 (30.5%) had latent TB infection. Seven chest X-rays yielded other non-TB radiological changes.

Conclusion:

This TB screening programme should aid early detection of TB and LTBI among immigrants from high-TB prevalence countries on first registering at the primary health care centre.
Biaya-biaya Manusia dalam Era Neo Liberal : Sebuah Imperatif
Authors: Sutopo Oki Rahadianto
Published: April 2019

“Artikel ini ingin menunjukkan relevansi pemikiran Peter.l Berger dalam Piramida Korban Manusia (1974) terutama mengenai konsep biaya-biaya manusia. Konsep ini coba dikontekstualisasikan dalam era neoliberal terutama pasca krisis ekonomi 1998 di Indonesia. Bagi Berger, setiap keputusan politik ataupun model pembangunan harus memperhatikan nilai-nilai etik yang bernama biaya-biaya manusia baik dalam hal fisik maupun makna. Nilai-nilai etik ini kelihatannya tidak menjadi prioritas utama dalam era neoliberal sekarang. Pengurangan subsidi, deregulasi dan privatisasi menjadi tiga kata ajaib untuk menciptakan pasar bebas. Ironisnya, kebijakan ini hanya memberikan keuntungan bagi tiga trinitas tidak suci antara lain WTO, IMF dan TNC/MNC sebagai aktor utama neoliberal. Realitas ini sekali lagi mengulangi apa yang terjadi pada era pembangunan sebelumnya. Dengan kata lain, lebih banyak lagi biaya-biaya manusia yang harus dikorbankan demi tujuan pasar”Kata Kunci: neoliberal, dominasi, biaya-biaya manusia, makna
Gerakan Anti Penuaan: Politik Identitas Usia Lanjut dalam Konstruksi Industri Medis
Authors: Mandiraatmadja Mahesa , Nugroho Heru , Abdullah Irwan
Published: April 2019

“Gerakan Anti Penuaan adalah bagian dari usaha menikmati kehidupan, sehingga hari tua tetap harus dilihat secara sekuleristik. Hidup di masa tua harus dinikmati dengan konstruksi baru, yaitu tetap sehat, tidak sakit-sakitan, dan tetap produktif serta sehat sampai ajal menjemput. Kesehatan tidak harus dipecahkan dengan sebuah pendekatan medis, melainkan perlu dilihat dari berbagai perspektif. Pertama; konstruksi identitas komunitas Lansia mengikuti perkembangan lingkungan sosial yang membentuk identitasnya, kedua; komunitas Lansia dikonstruksikan identitasnya oleh industri medis yang bergerak di bidang anti penuaan. Ketiga; penyebaran wacana sehat dan perlunya gerakan anti penuaan yang berfokus pada relasi kuasa industri medis itu sendiri.”Kata Kunci: Gerakan Anti Penuaan, Relasi Kuasa, Komunitas Lansia.
Ibadah Kelas Ala Reality Show Televisi
Authors: Noviani Ratna
Published: April 2019

“ Reality show merupakan jenis tayangan televisi yang semakin diminati, dan bahkan mampu menempati posisi prime time di Indonesia. Kemiskinan dan kehidupan kaum miskin merupakan salah satu tema yang cukup populer yang diangkat dalam tayangan realitas ditelevisi.Tulisan ini membahas fenomena tayang anrealitas di Indonesia, khususnya bagaimana program tayangan realitas mengkonstruksi ibadah keagamaan dan distingsi kelas. Empat tayangan realitas yang disiarkan pada momen bulan suci Ramadan 1432 H yaitu Bukan Puasa Biasa(TransTV), Orang Pinggiran (Trans7), Jika Aku Menjadi-Ramadan (Trans TV), dan Big Brother Indonesia (Trans TV) menjadi focus kajian dalam tulisan ini. Kajian mendalam terhadap ke empat tayangan realitas tersebut menunjukkan bahwa ada proseses tetikasi dan obyektifikasi realitas kemiskinan guna mendefinisikan dan menggarisbawahi ibadah kelas.Tayangan realitas tentang kelas bawah cenderung menampilkan banalitas pesan tentang kemiskinan.Realitas hidup dan ibadah agama kelas bawah hanya menjadi project bagi kelas diatasnya untuk memperbaiki kualitas spiritual keagamaannya dan untuk membangun citra positif tentang sikaya.Persoalan kemiskinan, pada akhirnya, hanya dianggap sebagai problem individual yang bisa dilalui atau diatasi dengan religiu sitas dan ketekunan ibadah individual.”Kata kunci: Reality Show, Televisi, Ibadah, Kelas
Gejala Alienasi Dalam Masyarakat Konsumeristik
Authors: Permana Aditya
Published: April 2019

” Masyarakat konsumer adalah masyarakat yang telah mengalami transformasi dari mode of production yang mencirikan kapitalisme lama ala Marx ke mode of consumption yang menandai era kapitalisme baru. Kapitalisme baru mengonstruksi masyarakat yang mengartikulasikan diri dalam objek-objek konsumsi yang menjadikan individu sekedar etalase tanda agar kemelimpahan produksi komoditi terus berjalan dan pemilik modal terus menangguk untung. Kapitalisme baru mereifikasi petanda-petanda (signifiers) komoditi dan melipatnya dalam kebutuhan-kebutuhan palsu (pseudo-needs) yang dijadikan ‘norma sosial’ baru yang berlandaskan pada konsumsi. Berkat kemajuan teknologi dan sistem konsumsi baru, kapitalisme baru menemukan solusi untuk mengatasi masalah alienasi buruh dalam mode of production. Namun konsumerisme sebagai efek langsung mode of consumption justru melahirkan alienasi yang jauh lebih luas dan tersamar. Tulisan ini mengangkat topik tersebut melalui kacamata pemikir sosial-filsafat postmodern, Jean Baudrillard”Kata kunci: konsumsi, masyarakat konsumer, konsumerisme, reifikasi, alienasi.
The Sociology Economy a Systematic Inquiry
Authors: Widhyharto Derajad S
Published: April 2019

N/A
Pengembangan Aspek Nilai dalam Pendidikan Pesantren di PP Nurul Ummah
Authors: Azami Ahmad Fadli
Published: April 2019

Pesantren sebagai lembaga pendidikan keagamaan merupakan fakta sosial yang tidak bisa diabaikan keberadaannya. Secara historis, pesantren telah berhasil menunjukkan model pendidikannya yang cukup kokoh dalam menghadapi berbagai guncangan. Tak heran jika model pendidikan itu masih tetap diakui oleh masyarakat islam pada umumnya. Dalam konteks kekinian di mana dunia pendidikan lebih menonjolkan kecerdasan intelektual, pesantren hadir dengan warna yang berbeda. Pesantren hadir dalam rupa pendidikan yang lebih menitikberatkan pada nilai yang berkembang dalam kehidupan sehari-hari. Pendidikan nilai yang dikembangkan pesantren itu telah menjadi antithesis terhadap sistem pendidikan di luarnya dan terbukti berhasil dalam membentuk watak seseorang. Nilai itu berupa cara memandang segala sudut kehidupan sebagai ibadah. Bagi pesantren, segala macam bentuk pekerjaan hendaknya dilakukan dengan niatan beribadah. Pemusatan pada nilai ini menghantarkan pada sikap saling pengertian, menghargai, dan menghormati pada segala hal. Pandangan ini menemukan landasannya pada sikap santri yang rela berkorban untuk kepentingan umum, penghormatan total pada guru dan Kiai, serta kebiasaan bertirakat. Pondok Pesantren Nurul Ummah (PPNU) adalah salah satu pesantren yang mengembangkan model pendidikan seperti itu. Pola pendidikan itu telah lama dianut dan dikembangkan oleh para santri melalui proses dialektika yang panjang.Kata kunci: Pesantren, nilai, ibadah
Kerohanian Islam (Rohis) dalam Jurang Globalisasi Aktivisme Rohis SMAN di Eks Se-Karesidenan Surakarta (Solo Raya) dalam Menjawab Tantangan Zaman
Authors: Aidulsyah Fachri , Wibisono Nurrahmad , Adi Yustia Atsanatrilova
Published: April 2019

Perbincangan antara Islamization dan globalization masih menjadi topik yang hangat untuk didiskusikan lebih jauh karena diantara keduanya terjadi pertentangan sistem peradaban yang saling bertolak belakang. Namun, sesusai dengan perkembangan zaman telah muncul berbagai macam pendekatan yang bervariasi dari kalangan umat muslim dalam menyikapi globalisasi itu sendiri. Tulisan ini mencoba meneropong tentang berbagai variasi yang terjadi terhadap agenda globalisasi melalui aktivisme Rohis di SMA Negeri di Eks Se-Karesidenan Surakarta dalam menjawab tantangan globalisasi itu sendiri. Hasil temuan menunjukkan para aktivis Rohis di beberapa sekolah justru mendukung globalisasi selama itu membawa kebaikan (ideology modernis), namun ada pula aktivis rohis yang menentang globalisasi yaitu pada mereka yang menganut ideology revivalis, serta ada pula aktivis rohis yang menganut paham transformatif yang bersifat humanis, tidak menentang globalisasi dan menerapkan ajaran islam sercara kaffah.
Agama dan Budaya dalam Integrasi Sosial (Belajar dari Pengalaman Masyarakat Fakfak di Propinsi Papua Barat)
Authors: Ernas Saidin , Qodir Zuly
Published: April 2019

Tulisan ini bertujuan untuk menjelaskan bahwa dinamika sosial kemasyarakatan di Papua ternyata tidak selalu menghadirkan cerita tentang konflik dan disintegrasi, tetapi juga tentang harmoni dan perdamaian sebagaimana yang terjadi pada masyarakat Fakfak di Prop. Papua Barat. Dengan metode deskriptif analysis terhadap data-data kualitatif yang dikumpulkan dari observasi lapangan, wawancara dan studi dokumentasi, penulis berhasil memperoleh beberapa temuan penting. Pertama, agama dan budaya berperan penting dalam melahirkan norma-norma sosial yang harmonis yang mempengaruhi praktik-praktik sosial individu hingga pada arena sosial yang lebih luas seperti politik dan ekonomi. Kedua, proses pelembagaan nilai dan norma didukung oleh pemerintah dan kekuatan civil society yang memiliki misi yang sama untuk mempromosikan harmoni dan perdamaian. Namun tulisan ini juga mengingatkan bahwa isu-isu konflik, seperti separatismme dan radikalisme agama, bila tidak ditangani dengan hati-hati bisa merusak integrasi sosial di Fakfak.
Apatite U-Pb dating at UNAM laboratories: analytical protocols and examples of its application
Authors: Ortega-Obregón Carlos , Abdullin Fanis , Solari Luigi , Schaaf Peter , Solís-Pichardo Gabriela
Published: April 2019

Apatite is the most common phosphate mineral in the Earth’s crust and can be found in practically all magmatic and metamorphic rocks, as well as in ancient and recent sediments and in certain ore deposits. Its effective closure temperature of 450–550 °C for the U-Pb system makes apatite an important natural medium-temperature thermochronometer that can be dated by both laser ablation inductively coupled plasma mass spectrometry (LA–ICP-MS) and isotope dilution thermal ionization mass spectrometry (ID–TIMS) techniques. Due to its low U content, coupled with high Pb contents incorporated during crystallization (also called common lead), apatite U-Pb dating is analytically challenging, and requires robust analytical protocols to achieve reliable ages. In this experimental study we obtained apatite U-Pb ages from six rock samples employing LA–ICP-MS (at Laboratorio de Estudios Isotópicos, Centro de Geociencias, UNAM), while one sample was also dated by ID–TIMS (at Laboratorio Universitario de Geoquímica Isotópica, UNAM). These samples have igneous emplacement or metamorphic ages broadly ranging from the Neoproterozoic to the Paleocene. The obtained apatite U-Pb ages agree well with other radioisotopic data (U-Pb on zircon and K-Ar or Ar-Ar on micas and hornblende) available for the same rock samples tested, or for the same geological units studied. These apatite U-Pb results, obtained for the first time at two main Mexican geochronology laboratories, are precise enough to be geologically meaningful and usually represent the cooling ages; though, in some cases they may also indicate the crystallization or the metamorphic age. Some advantages and disadvantages of LA–ICP-MS- and ID–TIMS-based methodologies were observed and outlined. Our results validate the analytical procedures used and will serve as an important trigger towards the development or improvement of medium-temperature thermochronology techniques in Mexico.
El Corredor Magmático Intracratónico Pérmico-Triásico de la provincia de La Pampa, Argentina: nuevas edades U-Pb SHRIMP, composición isotópica de Hf e implicancias geodinámicas
Authors: Chernicoff Carlos J. , Zappettini Eduardo O. , Santos João O. , McNaughton Neal
Published: April 2019

Se ha realizado un estudio y revisión de las unidades magmáticas que integran el Corredor Magmático Intracratónico Pérmico-Triásico de La Pampa (CMPT-LP), centro-sur de Argentina. Se dan a conocer nuevas edades U-Pb SHRIMP, composición isotópica de Hf y composición química de algunas unidades integrantes del CMPT-LP: 1) Sienogranito Chacharramendi, edad 254.7 ± 1.3 Ma (Pérmico tardío, Lopingiano), edad modelo Hf de 1640 Ma con εHf promedio de -5.68; 2) Riolita Lihue Calel, 239.3 ± 1.5 Ma (Triásico Medio), edad modelo Hf de 1640 Ma con εHf promedio de -5.56. Esto indica que las dos unidades datadas fueron cristalizadas a partir de un fundido mantélico que incorporó corteza de edad statheriana tardía hasta calymmiana, tomando en cuenta también la edad modelo Nd de 1483 Ma del sector más distal (sudoriental) (Granito López Lecube) del CMPT-LP obtenida por otros autores.

Nuevos datos geoquímicos aquí aportados, analizados junto con datos geoquímicos previos, denotan la impronta o huella anorogénica –ambiente de intraplaca– del corredor magmático CMPT-LP, destacándose su consistencia con los granitos del tipo A1 debido a la similitud de sus fuentes con aquéllas de las que derivan los basaltos de islas oceánicas (OIB), como queda evidenciado, p. ej., en los cocientes Y/Nb <1.2. La pertenencia de las rocas del CMPT-LP mayoritariamente al tipo de alto potasio también es consistente con su ocurrencia en un ambiente tectónico de intraplaca. El ambiente anorogénico del CMPT-LP contrasta con aquél de la etapa tardía del Grupo Choiyoi propiamente dicho, que si bien también está asociada a extensión pérmica tardía – triásica temprana, ocurre en el contexto orogénico propio del Arco Magmático Choiyoi. Por tal razón se analiza la conveniencia de excluir el CMPT-LP del Grupo Choiyoi, en el que hasta ahora estaba incluido. Asimismo se comparan brevemente los marcos tectónicos de las fajas orogénicas lindantes del CMPT-LP: fajas de San Rafael (o Sanrafaélica, o Arco-Retroarco Choiyoi) y Gondwánides Norpatagónicos.
Nuevas edades U-Pb SHRIMP del Complejo Volcánico Agua de la Piedra, Provincia Magmática Somún Curá, Patagonia, Argentina
Authors: Salani Flavia M. , Remesal Marcela B. , Santos João O.S.
Published: April 2019

Durante el Cenozoico, el Norte de la Patagonia Extraandina se caracterizó por un extenso magmatismo, principalmente Oligoceno (25–28Ma) y basáltico, el plateau de Somún Curá. Un estadio post meseta más joven está representado por distintos complejos volcánicos poligenéticos (Alta Sierra de Somún Curá, Sierra de Apas, Sierra de Telsen, Sierra de Talagapa, Sierra Pire Mahuida, y Sierra de Chacays) y centros monogenéticos menores (Trayén Niyeu, Cerro Dos Hermanos) desarrollados desde el Oligoceno tardío hasta el Mioceno. Hasta el presente el complejo Agua de la Piedra ha sido considerado un centro eruptivo post meseta. Este edificio volcánico está compuesto por flujos piroclásticos basales de composición traquítica, lavas y domos traquíticos y cantidades menores de riolita, culminando con flujos basálticos. La serie se caracteriza por su naturaleza alcalina y muestra una brecha composicional típica en el rango mesosilícico. La evolución inferida de las rocas básicas hasta los términos diferenciados traquita-riolita habría estado controlada mediante el fraccionamiento temprano de olivina-clinopiroxeno y posteriormente por plagioclasa + cristalización de K-feldespato. Hay escasos datos geocronológicos de esta serie volcánica. Para determinar con precisión la edad de la secuencia bimodal, se realizaron análisis U-Pb (SHRIMP) en muestras seleccionadas de un flujo de lava de traquita (Puesto Navarrete; 32.32 +0.48 -0.98 Ma), que constituye el núcleo del Complejo, y de un flujo de riolita en el sector periférico (Puesto Suárez; 32.01 +0.51 -0.34 Ma). La facies basáltica fue fechada por la metodología K-Ar en 24.4 ± 0.9 Ma. En conjunto, las nuevas edades reubican el Complejo Volcánico Agua de la Piedra en el contexto evolutivo de la Provincia Magmática Somún Curá. A la luz de la nueva información geocronológica que se presenta es evidente que las rocas traquíticas y riolíticas se habrían formado en forma sincrónica o poco antes que el evento principal que formó la meseta mientras que las edades de las rocas basálticas evidencian una contemporaneidad con otros complejos volcánicos post meseta.
Source parameters, focal mechanisms and stress tensor inversion from moderate earthquakes and its relationship with subduction Zone
Authors: Domínguez R. Tonatiuh , Rodríguez Lozoya Héctor E. , Reyes D. Gabriel , Quintanar Robles Luis , Aguilar Meléndez Armando , Rodríguez Leyva Héctor E. , Leal Graciano Jesús Martín
Published: April 2019

Nine earthquakes occured between 2005 and 2009, with magnitudes between 4.9 and 5.5, at the zone that correspond to the triple junction of the Cocos, Rivera and North America plates were relocated. Records from RESCO seismic stations were used together with records from SSN seismic network. Source parameters were estimated: source dimension, seismic moment, stress drop, average displacement and source time.The seismic moment tensor inversion was used to estimate focal mechanism and seismic moment to compare then whit short and long period estimation of these parameters.A stress tensor inversion was also performed in order to evaluate stress state of the area of study. The results indicate a compressive stress regime, which is characteristic of a subduction zone. It is interesting however, that plunge of ?1 goes from a moderate angle in the northwest to sub-horizontal in the southeast. The existence of normal and strike-slip mechanisms is also interesting in a subduction zone. Their existence was interpreted in terms of the interaction of Cocos and Rivera plates in this tectonically complicate zone.
Una revisión histórica de la automatización de la minería en México
Authors: Robles Berumen Ruth , Foladori Guillermo
Published: April 2019

El auge minero en determinados periodos históricos se debe a la incidencia de varios factores, como son el precio de los metales, el desarrollo de la tecnología, y las
políticas económicas y ambientales. El presente artículo reseña los principales periodos del desarrollo de la minería en México y profundiza en el más reciente: la aplicación de la automatización. La mayoría de los análisis sociales sobre la minería se enfocan en el concepto de neoextractivismo y hacen énfasis en las políticas económicas y los precios. La aportación de este estudio es sobre los datos de la revolución en las fuerzas productivas del sector minero, aspecto que puede ser igual de importante que los precios de los metales y la política económica en el sector para entender el contexto actual
Desigualdad factorial, personal y de la riqueza en Perú, 1950-2016
Authors: Alarco Tosoni Germán , Castillo Cesar , Leyva Favio
Published: April 2019

La distribución del ingreso factorial, personal y de la riqueza en Perú es altamente inequitativa. La participación salarial muestra un mayor nivel en los años sesenta como ocurre a nivel internacional, y mejora a partir de los años noventa, pero sin
alcanzar el estándar anterior. El coeficiente Gini del ingreso personal corregido supera  la tendencia oficial. Los niveles de desigualdad en la distribución de la riqueza productiva y los activos son mayores a los de la distribución personal del ingreso, de conformidad a la literatura internacional. Se elabora un proxy de la distribución de riqueza considerando los depósitos de las personas físicas y empresas en el sistema financiero nacional. Algunos de los resultados se comparan con otras economías latinoamericanas.
PENGARUH PEMBELAJARAN KOOPERATIF TIPE STAD DAN GI TERHADAP PENINGKATAN KEMAMPUAN KONEKSI MATEMATIK SISWA SEKOLAH DASAR
Authors: M.Pd Fadhilaturrahmi
Published: April 2019

Penelitian ini bertujuan untuk melihat pengaruh pembelajaran kooperatif tipe STAD dan GI terhadap peningkatan kemampuan koneksi matematik siswa sekolah dasar. Penelitian ini merupakan penelitian kuasi eksperimen, dengan desain yang digunakan adalah â€œpretest-posttest two treatman designâ€. Populasi sekaligus sebagai sampel dalam penelitian ini adalah seluruh siswa kelas V Sekolah dasar di sekolah dasar Ibnu Sina kabupaten Bandung. Instrumen yang digunakan dalam pengumpulan data adalah tes koneksi matematik bentuk uraian. Hasil penelitian menunjukkan bahwa pembelajaran matematika baik pembelajaran kooperatif tipe STAD maupun tipe GI sama-sama memiliki pengaruh dalam peningkatan kemampuan koneksiÂ  matematik siswa sekolah dasar. Jika ditinjau berdasarkan kategori kemampuan siswa, kemampuan koneksi kelompok tinggi dengan pembelajaran GI sama baiknya dengan kemampuan koneksi kelompok tinggi pada pembelajaran STAD. Kemampuan koneksi kelompok sedang dengan pembelajaran GI lebih baik daripada kemampuan koneksi kelompok sedang pada pembelajaran STAD.Begitu juga pada kemampuan koneksi kelompok rendah dengan pembelajaran GI sama baiknya dengan kemampuan koneksi kelompok rendah pada pembelajaran STAD. Berdasarkan hasil penelitian tersebut, maka pembelajaran matematika dengan pembelajaran kooperatif baik tipe STAD maupun tipe GI dapat dijadikan sebagai salah satu pembelajaran yang dapat diterapkan dalam upaya meningkatkan kemampuan siswa khususnya kemampuan koneksi matematik siswa sekolah dasar.
Dynamics of landscapes of the spit Dolgaya
Authors: Aleinikova Anna Mikhaylovna , Krylenko V V
Published: April 2019

This paper is devoted to the analysis of the landscape dynamics of the Dolgaya Spit, Taganrog Bay of the Sea of Azov. The analysis of the dynamics of the lithological composition, topography, soil, vegetation, anthropogenic impact. The formation of new shafts of beach-forming material from sand and shell occurs continuously on the western side of the spit. The maximum height is reached by the newly formed ramparts on the western part of the spit, as the height of the shafts decreases to the east.
In vitro cytotoxicity of different thermoplastic materials for clear aligners
Authors: Martina Stefano , Rongo Roberto , Bucci Rosaria , Razionale Armando Viviano , Valletta Rosa , D'Antò Vincenzo
Published: April 2019

Objectives:

To investigate the in vitro cytotoxicity of different thermoplastic materials for clear aligners on human primary gingival fibroblasts (HGFs).

Materials and Methods:

Four materials for clear aligners were considered in this study: Duran (Scheu-Dental GmbH, Iserlohn, Germany), Biolon (Dreve Dentamid GmbH, Unna, Germany), Zendura (Bay Materials LLC, Fremont, CA, USA), and SmartTrack (Align Technology, San Jose, CA, USA). Three out of four materials (Duran, Biolon, Zendura) were assessed as thermoformed and nonthermoformed, whereas the SmartTrack was assessed only as thermoformed. The samples were placed at 37°C in airtight test tubes containing Dulbecco's Modified Eagle's Medium (DMEM; 0.1 mg/mL) for 14 days. The cell viability of HGFs cultured with this medium was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Data were analyzed by means of one-way and two-way analysis of variance and post hoc tests (α = 0.05).

Results:

Each material exhibited a slight cytotoxic effect after 14 days. The highest cytotoxicity level on HGFs was achieved by Biolon (64.6% ± 3.3 of cell viability), followed by Zendura (74.4% ± 2.3 of cell viability), SmartTrack (78.8% ± 6.3 of cell viability), and finally Duran (84.6% ± 4 of cell viability), which was the least cytotoxic. In the comparison between nonthermoformed and thermoformed materials for Duran, Biolon, and Zendura, the thermoformed materials showed the highest level of cytotoxicity (P < .001).

Conclusions:

Under the experimental conditions of this study, all the materials for clear aligners presented a slight cytotoxicity. Biolon was the most cytotoxic and the thermoforming process increased the cytotoxicity of the materials.
Farklı Martenzit Hacim Oranlarında Kırılma Tokluğu Değerlerinin İncelenmesi
Authors: AYCAN Mehmet Fatih
Published: April 2019

Bu
çalışmada AISI 4140 ve AISI 4340 çeliklerde martenzit hacim oranlarının sertlik
ve kırılma tokluğu üzerindeki etkisi incelenmiştir. Çeliklerin ara kritik
sıcaklık aralıkları belirlenerek üçer farklı sıcaklıkta su verme işlemi,
ardından görüntü işleme yöntemi ile içyapı görüntüleri üzerinde her koşul için
martenzit hacim oranı belirlenmiştir. Ara kritik sıcaklığın artmasıyla
martenzit hacim oranları artış göstermiştir. Numunelere sertlik ve kırılma
tokluğu testleri uygulanmış, martenzit miktarının artmasıyla numunelerin
sertlikleri artarken kırılma tokluğunun azaldığı belirlenmiştir. AISI 4340’ın,
AISI 4140’a göre daha yüksek sertlik değerlerine sahip olmasına rağmen daha
düşük kırılma tokluk değerlerine sahip olduğu görülmüştür.
DIALOGISMO NA REINVENÇÃO DO CURRÍCULO DA EDUCAÇÃO DE JOVENS E ADULTOS (EJA)
Authors: CAMPOS Ana Maria De , FERREIRA Dulcinéia De Fátima
Published: April 2019

Apresentamos este estudo como um convite para um diálogo sobre a reinvenção do currículo na Educação de Jovens e Adultos. O tema em apreço busca evidenciar sua não neutralidade, bem como a relação incontornável com campos de disputa manifestos na sociedade contemporânea. Afirma a existência de uma conexão entre currículo, poder, subjetividade e a constituição da identidade. Em face desta compreensão convida os sujeitos que atuam nesse campo a um trabalho de reinvenção das práticas relacionadas à produção do currículo na EJA, tendo em vista a necessidade premente de superação do modelo tradicional. Indicadores sociais, sobretudo os relativos à educação da população das camadas subalternas da sociedade, evidenciam a indispensável tarefa de rever práticas arraigadas em favor da criação de um currículo que esteja a serviço da vida, da emancipação social, da equidade no trato com os diferentes grupos geracionais demandantes da educação de jovens e adultos em nosso país.
PEDAGOGIA FREIRIANA: O CURRÍCULO E A PRÁTICA PEDAGÓGICA NO PROCESSO DE APRENDIZAGEM
Authors: Conceição Sheilla Silva , Schneider Henrique Nou , Soeira Elaine Dos Reis
Published: April 2019

O artigo objetiva refletir sobre a obra de Paulo Freire: “Pedagogia do Oprimido”, correlacionando-a às discussões sobre currículo e prática pedagógica, a partir da análise acerca da política educacional pautada na constituição do currículo enquanto defesa da integração do conhecimento científico e da experiência. Para tanto, entende-se as práticas pedagógicas articuladas a processos de aprendizagem que valorizem e colaborem para a emancipação do indivíduo. Para a construção desse texto realizou-se a leitura reflexiva da obra de Paulo Freire: Pedagogia do Oprimido (1968) e de autores que agregam valor ao seu pensamento e método de ensino, bem como apresenta um esboço das discussões feitas na disciplina de Currículo do Programa de Pós-Graduação, além de um relato de experiência da prática pedagógica por meio de temas de interesse trabalhados na disciplina Educação a Distância, numa turma do curso de Pedagogia. Diante das reflexões e proposições, infere-se que as concepções e práticas pedagógicas que se considerem emancipadoras são aquelas apropriadas por gestores da educação, professores, alunos e comunidade em geral numa relação dialógica com perspectivas libertadoras. Enfatiza-se, ainda, por meio do relato de experiencia aqui apresentado, que o currículo articulado a temas de investigação agrega valor significativo ao processo de aprender. E, por isso, vale destacar, o quão atuais e fundamentais são as considerações de Paulo Freire na Educação.
The Influence of Serious Attitude In Work towards Business Success (Metro Muslim Entrepreneurs)
Authors: Murcitaningrum Suraya , Machsun Muhammad , Aliyu Gololo Ibrahim
Published: April 2019

This paper discusses thei nfluence of seriousattitude in work towards business success of Muslim entrepreneurs as it is known that the seriousness in work can create business success. The purpose of this study is to identify and assess the effect of seriousness attitude in work toward the success of the Muslim entrepreneurs in Metro Regency of Lampung. This study is based on a literature study and understandings of the accumulation of various primary studies conducted on Muslim entrepreneurs around the Islamic Boarding School of Al Muhsin 28 Metro collected through questionnaires. The literature study was conducted to understand the concept of the seriousness in work.  The results of the analysis showed that the significant value was 0.020. Since the value of α = 0.01, then the H0 was rejected if α was < 0.01.  Based on the analysis, it can be concluded that there is a relation of seriousness in work of Muslim businessmen to business success in Metro Regency. Keywords : Serious Attitude ,Work towards Business Success, Muslim Entrepreneurs
The Debt-Equity Ratio Choice: Risk Sharing Instruments, A Viable Alternative
Authors: Muhammad Ahmad Shamsuddeen , Wan Omar Wan Ahmad Bin , Mat Junoh Mohd Zukime Bin
Published: April 2019

Evidence has been documented in the literature that the interest based debt financing system is experiencing continuous discomfort. The outcome of the 2008 global financial crisis has further create fresh vigor to the assertion. Also, these authors have submitted that debt and leveraging are the two major causes of financial instability in the present system. This paper claims that the existence of the interest-based debt regime is becoming less acceptable, as excessive debt can affect the whole economic system, even in a developed country like United States. From an economic viewpoint, therefore, by banning interest rate-based contracts and decreeing exchange contracts, Islamic financeinspires risk sharing and prohibits risk transfer, risk shedding, and risk shifting. The paper proposes risk sharing based Islamic financing as a suitable alternative to the interest based debt financing. This study concludes that risk-sharing finance has several benefits, especially its potential to minimize, if not circumvent, the debt prompted financial crises that have beset the world..Keywords :  Debt-Equity Ratio; Risk Sharing Instruments; Islamic Finance
«Apocalipsi» (1998): poética, ética y recepción del teatro de Lluïsa Cunillé
Authors: Tirado Mauri Marta
Published: April 2019

Tomando Apocalipsi (1998) como obra paradigmática del teatro de Lluïsa Cunillé, el artículo explora sus estrategias compositivas de fragmentación, epicidad y rapsodia tanto para definir la “poética de la sustracción” característica de la autora como para descifrar la correlación existente entre dicha forma dramática, la semántica y la recepción de su obra. El análisis detallado de la ruptura progresiva de los parámetros dramáticos de Apocalipsi (fábula, acción, diálogo y personajes) permite elucidar la crisis de las relaciones intersubjetivas como problemática principal del teatro de Cunillé; asimismo, ayuda a identificar el “espectador emancipado” de Rancière (2009), intelectualmente activo y capaz de asumir la “responsabilidad ética” hacia el Otro de Levinas (1989), como modelo de recepción de su dramaturgia.
México: una democracia entre amarguras y esperanzas. Entrevista al sociólogo Sergio Zermeño
Authors: Dip Nicolás
Published: April 2019

Ensayos amargos sobre mi país. Del 68 al nuevo régimen, cincuenta años de ilusiones (2018) es el último libro del investigador mexicano Sergio Zermeño. Si del arte de titular se trata, el trabajo que nos ocupa merece un comentario aparte, ya que sintetiza una extensa y reconocida trayectoria política e intelectual plagada de sensaciones encontradas. Es que conversar con Zermeño es indagar en los últimos cincuenta años de la historia mexicana, con sus turbulencias sociales, políticas y culturales. Diálogo que se enriquece porque sus reflexiones son impulsadas en su doble condición de protagonista e intérprete. Desde sus primeros pasos como sociólogo en la Universidad Nacional Autónoma de México (UNAM), Zermeño no estuvo ajeno a las encrucijadas de su sociedad. A esto suma una formación que lo llevó a estudiar con Alain Touraine en la Sorbona de París y convertirse en la actualidad en uno de los principales referentes del Instituto de Investigaciones Sociales de la UNAM. Trayectoria que se materializa en un gran número de libros y artículos donde existe un esfuerzo persistente por enlazar los saberes universitarios con las problemáticas del entorno social y la historia de su país.
Interpretation of the concept of “discount” in Technical Works Tenders
Authors: Metallinos Pavlos
Published: April 2019

The text deals with the concept of the discount submitted by a candidate contractor tendering for a public works project. In accordance with prevailing conceptions, the quantity of the discount is perceived as being the amount of monetary compensation the candidate building contractor is willing to forgo for the sake of emerging as the winner of the tender. The text argues on the contrary that the discount is an objectively measurable magnitude. Specifically it is equal to the algebraic difference of the absolute surplus value that could be appropriated by the public works contractor minus the quantity of relative surplus value by virtue of which he is able to recoup the amount of discount submitted in the tender.
The congruency between self and brand
Authors: Ningrum Nonik K. , Ayem Sri
Published: April 2019

The purpose of this study was to investigate the relationships between actual self congruence, brand attachment, brand involvement, and brand loyalty. This study applied quantitative explanatory research. Purposive random sampling was used as sampling technique. A number of 200 respondents, which have familiarity to a certain brand, was asked to fill in the questionnaire as primary survey data. The findings show that actual self-congruence significantly positive affects brand involvement, brand attachment, and brand loyalty. Future study should include ideal self-congruent to compare whether actual or ideal self-congruence which has a stronger correlation on brand involvement, attachment, and also brand loyalty. This study provides a basis for firms to have better understanding of actual self-congruence roles on building customer brand involvement, brand attachment, and also brand loyalty.
Silent Hypoglycemia in Patients with Diabetes
Authors: Clus Simona , Creteanu Gabriela , Popa Amorin
Published: April 2019

Introduction. Iatrogenic hypoglycemia increases cardiovascular morbidity sometimes even with fatalities, and also increases cognitive disorders in most people with type 1 diabetes (T1D) and type 2 diabetes (T2D). Hypoglycemia is characterized by unawareness if the sympathoadrenal response is attenuated during the night, in autonomic neuropathy or in elderly patients. Therefore, hypoglycemia is a limiting factor in the glycemic management of diabetes.

Methods. We aimed to analyze the hypoglycemic events and the time spent with low glucose level (glucose <3.9 mmol/l) in patients with diabetes (T1D, T2D) with insulin therapy (basal or basal-bolus), in ambulatory or hospital setting. The glucose variability was assessed via the interstitial glucose concentration, measured with a Continuous Glucose Monitoring (CGM) system over 72 hours.

Results. The incidence, severity and duration of hypoglycemia are not correlated with HbA1c, disease’s duration and patient’s age. In patients with T1D, severe hypoglycemia is more frequent in patients with a long duration of diabetes. In this analysis, the type of basal analog insulin did not influence the presence of hypoglycemia (p=0.7), but the duration of nocturnal hypoglycemia was longer with insulin glargine U100 than with insulin detemir. The basal regimen is more protective for hypoglycemia than basal-bolus insulin.

Conclusions. The study suggested that hypoglycemic events are common, silent and prolonged in 1/3 of patients with T1D and T2D. The CGM system is beneficial for all patients with T1D and for patients with T2D with hypoglycemic risk and complications, to adjust medication in order to prevent cardiovascular events.
Rapidly Progressive Glomerulonephritides, Diagnostic and Therapeutic Urgency
Authors: Buhoara Cristina , Penescu Mircea
Published: April 2019

Rapidly progressive glomerulonephritides are relatively rare but serious disorders of diverse etiology, which share some clinical features: rapid evolution, progressive to renal failure, often accompanied by oliguria or anuria. They are characterized histopathologically by an intense extracapillary proliferation, with the development of crescents (semilunar lesions) in over 50% of examined glomeruli. The following pathological entities are referred to as rapidly progressive glomerulonephritides: ANCA-positive pauci-immune vasculitides (microscopic polyangiitis, granulomatosis associated with microscopic polyangiitis, allergic granulomatosis associated with microscopic polyangiitis), extracapillary proliferative glomerulonephritides by immune complexes and glomerulonephritides by anti-glomerular basement membrane antibodies. Due to major histopathological and functional complications, their evolution to death or renal replacement therapy occurs within 6-2 months after the diagnosis, if they are not treated, but the evolution is favorably influenced by aggressive immunosuppression, whether or not associated with plasmapheresis.
Bank erosion of the Tŕstie stream: BANCS model predictions vs. real bank erosion
Authors: Allmanová Zuzana , Vlčková Mária , Jankovský Martin , Jakubis Matúš , Allman Michal
Published: April 2019

This paper focused on predicting the bank erosion through the Bank Assessment for Non-point source Consequences of Sediment (BANCS) model on the Tŕstie water stream, located in the western Slovakia. In 2014, 18 experimental sections were established on the stream. These were assessed through the Bank Erosion Hazard Index (BEHI) and the Near Bank Stress (NBS) index. Based on the data we gathered, we constructed two erosion prediction curves. One was for BEHI categories low and moderate, and one for high, very high, and extreme BEHI. Erosion predicted through the model correlated strongly with the real annual bank erosion – for low and moderate BEHI, the R2 was 0.51, and for high, very high and extreme BEHI, the R2 was 0.66. Our results confirmed that the bank erosion can be predicted with sufficient precision on said stream through the BANCS model.