bluuebunny/crossref_metadata_2025 huggingface dataset:
Endogenous hydrogen sulfide contributes to uterine quiescence during pregnancy
Authors: You Xingji , Chen Zixi , Zhao Huina , Xu Chen , Liu Weina , Sun Qianqian , He Ping , Gu Hang , Ni Xin
Published: February 2017

Recent evidence suggests that uterine activation for labor is associated with inflammation within uterine tissues. Hydrogen sulfide (H2S) plays a critical role in inflammatory responses in various tissues. Our previous study has shown that human myometrium produces H2S via its generating enzymes cystathionine-γ-lyase (CSE) and cystathionine-β-synthetase (CBS) during pregnancy. We therefore explored whether H2S plays a role in the maintenance of uterine quiescence during pregnancy. Human myometrial biopsies were obtained from pregnant women at term. Uterine smooth muscle cells (UMSCs) isolated from myometrial tissues were treated with various reagents including H2S. The protein expression of CSE, CBS and contraction-associated proteins (CAPs) including connexin 43, oxytocin receptor and prostaglandin F2αreceptor determined by Western blot. The levels of cytokines were measured by ELISA. The results showed that CSE and CBS expression inversely correlated to the levels of CAPs and activated NF-κB in pregnant myometrial tissues. H2S inhibited the expression of CAPs, NF-κB activation and the production of interleukin (IL)-1β, IL-6 and tumor necrosis factor α (TNFα) in cultured USMCs. IL-1β treatment reversed H2S inhibition of CAPs. Knockdown of CSE and CBS prevented H2S suppression of inflammation. H2S modulation of inflammation is through KATPchannels and phosphoinositide 3-kinase (PI3K) and extracellular signal-regulated kinase (ERK) signaling pathways. H2S activation of PI3K and ERK signaling is dependent on KATPchannels. Our data suggest that H2S suppresses the expression of CAPs via inhibition of inflammation in myometrium. Endogenous H2S is one of the key factors in maintenance of uterine quiescence during pregnancy.
Hospital Variations in Unexpected Complications Among Term Newborns
Authors: Sebastião Yuri V. , Womack Lindsay S. , López Castillo Humberto , Balakrishnan Maya , Bruder Karen , Alitz Paige , Detman Linda A. , Bronson Emily A. , Curran John S. , Sappenfield William M.
Published: February 2017

OBJECTIVES:

To examine contributing factors and potential reasons for hospital differences in unexpected newborn complication rates in Florida.

METHODS:

We conducted a population-based retrospective cohort study of linked birth certificate and hospital discharge records from 2004 to 2013. The study population included 1 604 774 term, singleton live births in 124 hospitals. Severe and moderate complications were identified via a published algorithm. Logistic mixed-effects models were used to examine risk factors for complications and to estimate the percentage of hospital variation explained by factors. Descriptive analyses were performed to explore reasons for the differences.

RESULTS:

Hospital total complication rates varied from 6.7 to 98.6 per 1000 births. No correlation between severe and moderate complication rates by hospital was identified. Leading risk factors for complications included medically indicated early-term delivery, no prenatal care, nulliparity, prepregnancy obesity, tobacco use, and delivery in southern Florida hospitals. Hospital factors such as geographic location, level of care or birth volume, and Medicaid births percentage explained 35% and 27.8% of variation in severe and moderate complication rates, respectively. Individual factors explained an additional 6% of variation in severe complication rates. Different complication subcategories (eg, infections, hospital transfers) drove the hospital factors that contributed to severe and moderate complications.

CONCLUSIONS:

Variation in unexpected complication rates is more likely to be related to hospital rather than patient characteristics in Florida. The high proportion of variation explained by hospital factors suggests potential opportunities for improvement, and identifying specific complication categories may provide focus areas. Some of the opportunities may be related to differences in hospital coding practice.
Electronic Properties of Ga(In)NAs Alloys
Authors: Buyanova I. A. , Chen W. M. , Monemar B.
Published: February 2017

A brief review on the present knowledge of the electronic properties of the Ga(In)NAs ternary and quaternary alloys is given mainly from an experimental perspective. The discussion is focused on Ga(In)NAs with low N composition (< 10 %), where a large amount of experimental work has been done. Important fundamental electronic properties of the material system are analyzed with the emphasis on the nature of the giant band gap bowing in the alloy and nitrogen-induced modifications of the electronic structure of the conduction band. The current knowledge of the key material parameters, relevant for the device applications, such as electron effective mass, recombination processes and band alignment in Ga(In)NAs/GaAs heterostructures, is also reviewed.
Growth Mode and Defects in Aluminum Nitride Sublimed on (0001) 6H-SiC Substrates
Authors: Liu Lianghong , Liu B. , Shi Y. , Edgar J.H.
Published: February 2017

The effect of substrate preparation on the sublimation growth of AlN at about 1800 °C and 400 torr on (0001) 6H-SiC was investigated. The AlN grew in the step flow growth mode on an off-axis 6H-SiC substrate with a 6H-SiC epilayer, an island growth mode on as-received substrates, and a 2-D growth mode on substrates first coated with an AlN epitaxial layer by MOCVD. Cracks in the deposited AlN crystal due to the lattice and thermal expansion coefficient mismatches were always observed by SEM and optical microscopy.
Structural Properties of GaN Films Grown by Molecular Beam Epitaxy on Singular and Vicinal 6H-SiC(0001)
Authors: Lee C. D. , Feenstra R. M. , Shigiltchoff O. , Devaty R. P. , Choyke W. J.
Published: February 2017

Gallium nitride films are grown by plasma-assisted molecular beam epitaxy (MBE) on 6H-SiC(0001) substrates with no miscut and with 3.5° miscuts in both the [1 0 0] and [1 1 0] directions. The hydrogen-etched substrates display straight or chevron shaped steps, respectively, and the same morphology is observed on the GaN films. X-ray rocking curves display substantially reduced width for films on the vicinal substrates compared to singular substrates, for the same Ga/N flux ratio used during growth.
Wet Chemical Etching of AlN Single Crystals
Authors: Zhuang D. , Edgar J.H. , Liu Lianghong , Liu B. , Walker L.
Published: February 2017

Anisotropic chemical etching is an important means for characterizing the polarity and defect density of single crystals. In this letter, we present the results of our studies on the etching of bulk AlN crystals in aqueous potassium hydroxide solution. The nitrogen polarity (0001) basal plane initially etched rapidly, while the aluminum polarity basal plane, and prismatic (100) planes were not etched. The etch rate of the nitrogen polarity basal plane eventually decreased to zero, as the surface became completely covered with hexagonal hillocks which were bounded by {101} planes. The hillock density for the self-seeded AlN crystals studied was typically in the range of 5×107cm−2 to 109cm−2. From our analysis of etched AlN crystals, we infer that freely nucleated crystals predominately have the nitrogen to aluminum direction pointing out from the nucleation surface, that is the ends of the AlN crystals facing the source are aluminum polarity.
Compositional variation of AlGaN epitaxial films on 6H-SiC substrates determined by cathodoluminescence.
Authors: Petersson A. , Gustafsson Anders , Samuelson L. , Tanaka Satoru , Aoyagi Yoshinobu
Published: February 2017

High quality epitaxial films of AlxGa1−xN, grown on SiC substrates, were investigated using spatially resolved cathodoluminescence (CL), scanning electron microscopy, and atomic force microscopy. A variation in the observed peak energy position of the CL was related to alloy fluctuations. CL was used to reveal relative alloy fluctuations of approximately 1% on a sub-micrometer scale, with a precision difficult to surpass with other available techniques. By correlating data from the different techniques, a model was derived. The main feature of it is an alloy fluctuation on the micrometer scale, seeded during the initial growth and extending through the epitaxial film. These alloy fluctuations seems to be related to terrace steps (≈5 nm in height), formed preferentially at scratches on the SiC surface. This investigation indicates that the initial growth of epitaxial films is critical and structures formed at the beginning of the growth tend to persist throughout the growth. Further, a strain gradient from the SiC interface extending towards the surface, was observed.
Photoluminescence in n-doped In0.1Ga0.9N/In0.01Ga0.99N multiple quantum wells
Authors: Monemar B. , Paskov P.P. , Bergman J. P. , Pozina G. , Darakchieva V. , Iwaya M. , Kamiyama Satoshi , Amano H. , Akasaki I.
Published: February 2017

In0.1Ga0.9N/In0.01Ga0.99N multiple quantum wells (MQWs) with heavily Si-doped barriers, grown with Metal Organic Vapor Phase Epitaxy (MOVPE) at about 8000C, have been studied in detail with optical spectroscopy. Such structures are shown to be very sensitive to a near surface depletion field, and if no additional layer is grown on top of the MQW structure the optical spectra from the individual QWs are expected to be drastically different. For a sample with 3 near surface QWs and Si-doped barriers, only the QW most distant from the surface is observed in photoluminescence (PL). The strong surface depletion field is suggested to explain these results, so that the QWs closer to the surface cannot hold the photo-excited carriers. A similar effect of the strong depletion field is found in an LED structure where the MQW is positioned at the highly doped n-side of the pn-junction. The internal polarization induced electric field in the QWs is also rather strong, and incompletely screened by carriers transferred from the doped barriers. The observed PL emission for this QW is of localized exciton character, consistent with the temperature dependence of peak position and PL decay time. The excitonic lineshape of 35-40 meV in the QW PL is explained as caused by a combination of random alloy fluctuations and interface roughness; the corresponding localization potentials are also responsible for the localization of the excitons in the low temperature range (<150 K). These samples show no evidence of localization due to nanoscale In fluctuations, these commonly observed problems are concluded to be not present in our samples. A second PL feature at lower energy, observed at low temperatures, is shown to be related to an electron pocket at the interface to the underlying n-GaN buffer layer in these samples.
KARAKTERISTIK PERIKANAN JARING CUMI DI UTARA JAWA
Authors: Hufiadi Hufiadi , Mahiswara Mahiswara
Published: February 2017

Saat ini, perikanan jaring cumi khusus di Pulau Jawa berkembang pesat, keberadaannya dapat dijumpai terutama di Pelabuhan Perikanan Jakarta (Muara Baru dan Muara Angke), Indramayu, dan Juwana. Tulisan ini didasarkan pada hasil penelitian jaring nus (jaring cumi) di Juwana pada bulan Oktober 2004. Tujuan penelitian ini adalah untuk memberikan informasi dasar secara deskriptif mengenai karakteristik perikanan jaring cumi di perairan Laut Jawa meliputi intensitas cahaya lampu, alat tangkap, dan armada, aktivitas penangkapan, komposisi hasil tangkapan. Hasil penelitian menunjukkan bahwa kapal jaring cumi yang berbasis di Juwana diperoleh kisaran panjang 14,30 sampai dengan 19,10 m; lebar 4,35 sampai dengan 6,60 m; dalam 2,0 sampai dengan 2,5 m. Nelayan jaring cumi Juwana beroperasi di perairan utara Jawa pada posisi 03 04° LS dan 110–114° BT. Dari hasil tangkapan jaring cumi didominasi oleh ikan siro (Ambygaster sirm) mencapai (83,58%). Dari ke-3 titik pengukuran intensitas cahaya (pusat, tengah, dan haluan kapal), diperoleh variasi nilai pemudaran cahaya 0,1028 sampai dengan 0,2566 μmol s-1 m-2 per m.Based on the of used lighting of lamp, stick held dipnet is belong to the light fishing classification. The stick held dipnet fisheries especially in Java grow rapidly, its existence can be met in Jakarta fishery port (Nizam Zahman and Muara Angke), Indramayu, and Juwana. This paper is based on the results of studies and observer on stick held dipnet boat in Juwana at October 2004. The stick held dipnet research was conducted to know of fishing gear, light illumination intensity, fishing activities, catch composition, and body length of dominated catch. The stick held dipnet boats based in Juwana has dimention with range i.e. Length (L) 14,30 to 19,10 m; Broad (B) 4,35 to 6,60 m; Depth (D) 2,0 to 2,5 m. The stick held dipnet Java waters fishing ground was S 03-04° and E 110-114° positions. From the catch of stick held dipnet are dominated by Ambygaster Sirm (83,58%). From third point of measurement of light intensity (center, middle, and ship lower) on boat, it was found the variation of dull light illumination ranging from 0,1028 to 0,2566 μ mole of s- 1 m-2 per m.
Explicit focus on meaning
Authors: Negueruela-Azarola Eduardo , Fernandez Parera Antoni
Published: February 2017

Against the backdrop of discussions in instructed SLA concerning form-focused versus meaning-focused L2 instruction, a framework we refer to as Mindful Conceptual Engagement (MCE) is proposed as a feature of Vygotskian concept-based instruction. In this paper, specific attention is given to the pragmatic relevance of ser/estar in Spanish discourse. The implementation of the MCE approach to teaching concepts starts with the development of pedagogical materials for the teaching of communicative issues, in this case, normativity. It also requires active engagement by learners in reflective activities, such as the creation of their own conceptual representations as a learning tool to understand ser/estar through the notion of normativity. Data from beginning L2 Spanish learners are presented to illustrate how engaging them in the production of different kinds of graphic representations and verbalizations promotes the internalization of complex grammatical concepts with practical functionality in L2 communication. It is argued that by promoting active reflection and engagement with communicative issues using the concept of normativity, MCE enabled learners to begin to appreciate the pragmatic significance of the concept as expressed in ser/estar.
Case studies to demonstrate challenges of driven piles on rock
Authors: Ng Kam , Sullivan Todd
Published: February 2017

In Wyoming, pile foundations for bridges are often driven on rock materials because of the state’s shallow bedrock stratigraphy. Unfortunately, no static analysis methods are currently available for estimating the resistance of these driven piles. In this paper, two recently completed bridge projects (the Owl Creek and Woods Wardell sites) on steel H-piles in Wyoming are explicitly presented, and data from three past projects are included to highlight the limited knowledge and challenges pertaining to the present design and construction practices. Static analysis methods were used to estimate the geotechnical resistances of these piles. The wave equation analysis program and the case pile wave analysis program were used to verify their performances during construction. Structural capacities of these piles were also calculated. The results of the studies show that the static analysis methods and structural analyses yield inconsistent pile resistance estimations. Recommendations in terms of pile bracing and embedded pile length are proposed to predict better the resistances of piles on soft rock.
LRFD guides for driven piles considering pile set-up phenomenon
Authors: Ng Kam , Green Don , Sritharan Sri , Nop Michael
Published: February 2017

By using an electronic database consisting of previously tested pile data and ten completed full-scale pile tests in Iowa, USA, load and resistance factor design (LRFD) resistance factors considering various construction control methods and set-ups were developed. The focus of this paper is on technology transfer from research to practice as the resistance factors derived at the end of the research required modifications. In a collaboration between a state agency, a private company and a university, this effort facilitated the development of a pragmatic LRFD design guide considering the pile set-up phenomenon that is suitable for use by design engineers. A summary of the joint effort and details of the end product as a lesson for other transportation agencies and similar future endeavours is presented in this paper, which highlights the steps beyond research needed to make the research outcomes valuable for practical use in design and construction while promoting the use of the LRFD principle for pile design.
On China de Henry Kissinger
Authors: Ladino-Orjuela Wilson
Published: February 2017

Tema y alcance: el presente trabajo aborda la cultura milenaria china desde el libro escrito por Henrry Kissinger, el cual está compuesto por capítulos que tratan las diferentes etapas y momentos históricos del gigante asiático. Características: desde el análisis documental se realiza un breve recorrido histórico de una de las mayores potencias mundiales, así como de su relación con los Estados Unidos. Hallazgos: China, como  nación milenaria de gran bagaje cultural, está altamente influenciada por el confucianismo como “filosofía y religión”, así como por ideas políticas tales como la de la revolución cultural, lo que hace de este país un fenómeno interesante y digno de ser estudiado. Conclusiones: es necesario conocer e identificar las relaciones de poder de este país frente a las otras naciones del mundo, a fin de tener mayor entendimiento de la dinámica política actual, especialmente entre China y el gobierno de los Estados Unidos. 

  
El impacto del sector salud en Colombia reflejado en la valoración de una clínica de la región cafetera de Colombia
Authors: Moreno-Cano Jhon Arturo , Suárez-Marín Diana Patricia
Published: February 2017

Introducción: este artículo presenta los principales resultados obtenidos del análisis financiero y de la valoración de una empresa del sector salud ubicada en el eje cafetero de Colombia. El objetivo principal de este trabajo es hallar el valor de la clínica, dada la situación actual del sector salud en Colombia, y así poder soportar la toma de decisiones de sus propietarios. Metodología: se trabaja con el modelo de valoración de flujos de caja descontados, con la tasa hallada a través de la fórmula del costo de capital promedio ponderado (ccpp). Resultados: el desarrollo de la valoración parte de la recolección de la información pertinente como normatividad referente a la salud en Colombia, estados financieros, resultados de entrevistas a los administradores y personal de la clínica, así como una visita a sus instalaciones. Conclusiones: se resalta que este artículo es una muestra de cómo herramientas académicas de valoración de empresas pueden ayudar a los propietarios o socios de una empresa en su toma de decisiones.
To Build or to Buy? The Role of Local Information in Credit Market Development
Authors: Wang Teng
Published: February 2017

Exploiting the heterogeneity in legal constraints on local bank employees' mobility, I show that access to local information influences banks' modes of expansion. Banks entering a new market typically establish new branches directly when interbank labor mobility is less restrictive but acquire incumbent branches otherwise. The treatment effect is strengthened when information asymmetries between local and entrants are severe. Furthermore, I find a surge in the total amount of local small business and mortgage loans granted, a higher mortgage approval rate, and a reduction of mortgage rates by surrounding incumbent branches, precisely around the period of entrants establishing new branches, which indicate intensified competition among banks.
Transformation of Skeletonema marinoi using Multipulse Electroporation v1
Authors: N. Johansson. Oskar , Adrian K. Clarke not provided
Published: February 2017

The following transformation protocol is designed for the insertion of linear DNA constructs into the nuclear genome of Skeletonema marinoi by non-homologous recombination.
DRAMA “MALAM JAHANAM” KARYA MOTINGGO BUSYE: SEBUAH TELAAH PSIKOLOGIS
Authors: Hamdani Agus
Published: February 2017

Abstract          This article summarizes the results of research that seeks to dismantle the psychological side of the main characters in the drama Hell Night work is Motinggo Busye.Melalui study analysis shows that the main character of this drama named Soleman have a picture of physical and non-physical round. Factors that influence personality Soleman are internal and external factors. Internal factors such as congenital inherited from his father. External factors such as the bitter life experiences Apart from families poor moral, environmental conditions also provide opportunities for Soleman for having an affair with the wife of the lain.Secara indirectly, Soleman personality in the drama that reinforces the opinion of the middle of two opposite schools of psychology (nativism and empiricism), that a person's personality is basically influenced by two factors simultaneously, which is a factor in (hereditary) and external (environmental). Keywords: drama, psychological study, psychology literature.
User Perception to Service Quality (Libqual) in State University Library at Surabaya
Authors: Harisanty Dessy , Khodijah Siti
Published: February 2017

Abstrak. Pelayanan yang dilakukan oleh perpustakaan secara langsung ataupun tidak akan menimbulkan citra perpustakaan baik citra positif maupun negatif. Citra tersebut menimbulkan persepsi pengguna dan akhirnya membuat penilaian pengguna terhadap perpustakaan. Dalam penelitian ini penulis ingin mengetahui mengenai tingkat persepsi pengguna atas kualitas layanan perpustakaan perguruan tinggi negeri yang meliputi dimensi affect of service, information control, library as place. Penelitian ini menggunakan pendekatan kuantitatif yang sifatnya deskriptif dan teknik pengumpulan data kuisioner dengan teknik sampling nonrandom sampling dengan kriteria purposive sampling di Perpustakaan Institut Teknologi Sepuluh November (ITS), Universitas Airlangga (UNAIR) dan Perpustakaan Universitas Negeri Surabaya (UNESA). Teknik pengolahan data yakni dengan membuat nilai rata-rata di setiap indikator kualitas layanan. Konsep kualitas layanan yang digunakan adalah LibQual+™ yang terdiri dari affect of service, information control, dan library as place. Hasilnya bahwa nilai rata-rata penilaian pengguna pada kinerja ketiga perpustakaan di atas adalah baik. Untuk perpustakaan UNESA dan ITS, urutan penilaian dari yang terbaik oleh pengguna adalah library as place, information control dan affect of service. Urutan penilaian pengguna atas dimensi yang terbaik pada perpustakaan Unair secara berturut-turut adalah library as place, affect of service, dan information control. Kata kunci: libqual, persepsi pengguna, perpustakaan perguruan tinggi Abstract. Services carried out by the library directly and will cause the image library of both positive and negative images. These images create the perception of users and ultimately make an assessment of the library users. In this study the authors wanted to know about the level of user perception on the quality of library services such as affect of service, information control, and library as place. This study uses a quantitative approach that are descriptive and questionnaire data collection techniques with nonrandom sampling with purposive sampling criteria in the library of Institut Teknologi Sepuluh Nopember (ITS), Universitas Airlangga (Unair) and the library of the State University of Surabaya (UNESA). Data processing techniques to make the average value in every indicator of service quality. The concept of service quality used is LibQual + ™ consisting of affect of service, information control, and library as place. The result is that the average value assessment on the performance of the three library users above is good. For UNESA and ITS libraries, order an assessment of the best by the user is a library as place, information control and affect of service. In Unair library, user ratings on the dimensions of the order of the best in a row is a library as place, affect of service, and information control. Keywords: libqual, user perception, university libraries
Step by Step Implementation of Knowledge Sharing for Library In Indonesian
Authors: Anna Nove E. Variant
Published: February 2017

Abstrak. Knowledge sharing banyak diyakini sebagai kegiatan yang mampu mendorong kreativitas dan terciptanya inovasi bagi sebuah organisasi. Banyak organisasi yang memiliki inisiatif menerapkan knowledge sharing demi terciptanya inovasi. Paper ini ingin memberikan wacana bagi perpustakaan yang ingin mengimplementasikan knowledge sharing di perpustakaan. Paper ini terdiri dari pemaparan dan analisis kondisi perpustakaan dan implementasi knowledge sharig di perpustakaan, teknologi yang mendukung knowledge sharing. Langkah-langkah yang bisa diimplementasikan dalam knowledge sharing antara lain dengan menciptakan leader dan champion, menciptakan budaya sharing dan trust antar pegawai, menciptakan office layout yang mendorong terjadinya kolaborasi, dan memberikan motivasi bagi para pegawai agar mau berpartisipasi dalam knowledge sharing. Metode yang digunakan pada paper ini adalah studi pustaka dengan menelusur sumber informasi baik dari jurnal, artikel, berita, studi kasus, dan standar terkait knowledge sharing. Kata kunci: knowledge sharing, knowledge sharing di perpustakaan, perpustakaan, strategi knowledge sharing Abstract. Knowledge sharing is believed to be an activity that is able to encourage creativity and create innovation in an organization. Many organizations have the initiative to implement knowledge sharing in order to create innovations. This paper proposes a discourse for libraries that want to implement knowledge sharing. This paper explains and analyzes the condition of the library and the implementation of knowledge sharing in the library and the technology that supports knowledge sharing. The steps that can be implemented in knowledge sharing include creating leaders and champions, creating sharing culture and trust among employees, creating office layout which encourage collaboration and motivating the employees to participate in knowledge sharing. This paper used literature study to search sources of information from journals, articles, news, case studies and standards related to knowledge sharing. Keywords: knowledge sharing, library, knowledge sharing strategies
THE RELATIONS OF STUDENTS ABILITY TO READ THROUGHT THE GOOD READING METHOD WITH THEIR ABILITY TO ANSWER THE MULTIPLECHOICE QUESTIONS
Authors: - Prijana , - Sukaesih
Published: February 2017

Abstrak. Nilai akademik sering dikaitkan dengan upaya belajar. Upaya belajar sering dikaitkan dengan aktivitas baca. Seseorang dikatakan belajar, maka dipastikan membaca. Tujuan membaca adalah sama, yakni memahami teks, yang berbeda adalah kemampuan memahami teks. Mahasiswa memiliki cara membaca teks yang berbeda-beda, dan hasilnya juga berbeda-beda. Rekayasa baca penting dilakukan untuk memperoleh hasil optimal, yakni melalui metode baca good reading. Tujuan penelitian: menguji metode baca good reading yang dikaitkan dengan kemampuan menjawab soal multiplechoice. Metode penelitian: kelompok eksperimen (N=34) dan kelompok kontrol (N=40). Hasil penelitian: Jika α = 0.10 ; dk = 4 maka kemampuan menjawab soal multiplechoice memiliki hubungan signifikan dengan kemampuan membaca, melalui metode baca good reading. Kesimpulan: dengan derajat kepercayaan 90% metode baca good reading dapat membantu secara optimal kemampuan baca mahasiswa. Kata kunci: Kebiasaan baca, Kemampuan baca, Metode baca good reading, Teks Ilmu pengetahuan.  Abstract. Academic values often associated with learning efforts. Efforts to learn is often associated with the activity of reading. Someone said to learn, then certainly reading. The purpose of reading is the same, namely to understand the text, that is different is the ability to understand the text. Students have to read different texts, and the results are also different. Read engineering is important to obtain optimum results, through the method of reading good reading. Objective: to test methods of reading good reading that is associated with the ability to answer the questions multiplechoice. Methods: experimental group (N = 34) and control group (N = 40). Result: If α = 0:10; dk = 4. The ability to answer questions multiplechoice has a significant relationship with the ability to read, through the method of reading good reading. Conclusion: with a 90% confidence level, the method of reading good reading, can help optimally student reading skills. Keywords: The habit of reading, reading ability, Method 'good reading', Text Science.
Techno-economic Assessment of Coal to SNG Power Plant in Kalimantan
Authors: Andika Riezqa , Valentina Valentina
Published: February 2017

As the most abundant and widely distributed fossil fuel, coal has become a key component of energy sources in worldwide. However, air pollutants from coal power plants contribute carbon dioxide emissions. Therefore, understanding how to taking care coal in industrial point of view is important. This paper focused on the feasibility study, including process design and simulation, of a coal to SNG power plant in Kalimantan in order to fulfill its electricity demand. In 2019, it is estimated that Kalimantan will need 2446 MW of electricity and it reaches 2518 MW in 2024. This study allows a thorough evaluation both in technology and commercial point of view. The data for the model is gathered through literature survey from government institution reports and academic papers. Aspen HYSYS is used for modelling the power plant consists of two blocks which are SNG production block and power block. The economic evaluation is vary depends on the pay-back period, capital and operational cost which are coal price, and electricity cost. The results of this study can be used as support tool for energy development plan as well as policy-making in Indonesia.
Early Phase Process Evaluation: Industrial Practices
Authors: Putra Zulfan Adi
Published: February 2017

Process route evaluation is a part of research and development (R&D) works in an industrial chemical project life cycle. In this early phase, good process evaluation, including process synthesis and designs, provide guidance’s on the R&D project. The paper aimed to collect practical methods used in this early phase process route evaluation from author’s 10 years of industrial experiences.  The collected methods range from forward-backward process synthesis, functional process design, use of cost estimation, and applications of Monte Carlo simulation. Led by a good project management (e.g. via a stage-gate approach) use of these methods have shown beneficial results. Some important results are strong arguments on whether or not the project will continue, as well as relevant technical and economic issues identified during this early phase process synthesis and design. Later on, these issues become guidance’s to the follow-up project, if it is continued.
Bisphosphonate-related osteonecrosis of the jaw: current state of the problem
Authors: Spevak E M , Tsymbal A N
Published: February 2017

The article presents review of the literature on the current state of the problem of bisphosphonate-related osteonecrosis of the jaw. In Russia and abroad there are numerous reports of atypical lesions of the maxilla associated with taking medications on the basis of phosphorus or its analogues, in particular bisphosphonates. This is an issue: if earlier bisphosphonate treatment complications were limited to individual clinical observations, currently their frequency, according to different authors, reaches 8-27%. Bisphosphonate-related osteonecrosis of the jaw is characterized by unique etiopathogenic, clinical and diagnostic features that distinguish it from other inflammatory, degenerative and iatrogenic diseases of orofacial region, so it is reasonable to isolate it into an independent nosology, requiring a comprehensive study. According to current data, bisphosphonate-related osteonecrosis of the jaw is a complication of antiresorptive therapy, characterized by necrosis and exposure of bone area, which persists for more than 8 weeks, followed by the process progression in the absence of radiation therapy to the head area in history. Bisphosphonates are antiresorptive agents, potent inhibitors of bone tissue destruction, widely used for the treatment of bone metastasis, multiple myeloma, and hypercalcemia in cancer patients. However, the development of complications such as osteonecrosis of the jaw greatly reduces the positive effects of treatment, and extremely bothersome for patients. Osteonecrosis-related pyo-inflammatory processes of admaxillary tissue, the appearance of persistent sinus tracts on the skin and in the mouth, the risk of pathologic fracture of the jaw impair the quality of life of patients. Presented in the article analysis of currently known data about the bisphosphonate-related osteonecrosis of the jaw should attract the attention of dental surgeons, maxillofacial surgeons, endocrinologists, oncologists to this problem.
Clinical observation of diabetic foot in Rohilkhand region, Uttar Pradesh, India
Authors: Ratnakar . , Sharan Jagdamba , Mukherjee Sujoy
Published: February 2017

Background: Among persons diagnosed as having diabetes mellitus, the lifetime risk of developing a foot ulcer is high. Diabetic foot problems are a major cause of hospitalization and prolonged hospital stays. Diabetic foot problems, such as ulcerations, infections, and gangrene, are common cause of hospitalization among diabetic patients. Routine ulcer care, treatment of infections, amputations if required, and hospitalization pose a major financial problem and place a tremendous burden on the health care system. This clinical observation of patients with diabetic foot describes epidemiology, risk factors, clinical symptoms and extent of lesions in patients admitted at a tertiary center in Rohilkhand region of Uttar Pradesh, India.Methods: Clinical profile of 50 patients of diabetic foot ulcers was studied. All the patients were subjected to complete haemogram, fasting and PP blood sugar, HbA1c, LFT, KFT, urine R/E, pus c/s, color Doppler of lower limb and x-ray foot.Results: Majority of patients with diabetic foot lesions were young males with a single ulcer having diabetes for more than 2 years.Conclusions: Diabetic foot is a major health problem in diabetic patients. In Rohilkhand region majority of patients with diabetic foot belong to rural areas and of low socioeconomic class.
Mathematical modelling of the working process of a hot gas pressure feed system
Authors: Salich V. L.
Published: February 2017

The paper discusses improving the weight and size characteristics of propulsion systems with liquid thrusters due to the replacement of conventional compressed-gas systems by hot gas systems where a gas generator operating on propellants is used for hot gas production. Possible algorithms of the operation of such feed systems are discussed. A mathematical model has been created for the purpose of computational and theoretical study of operating processes in the considered feed system. The model represents system units as lumped volumes. Differential equations of weight, internal energy, and combustion gases concentration are written for every lumped volume. The differential equation of unit structure temperature is also added. The differential equations of mass and internal energy are converted into equations of pressure and temperature. The model is expressed through mass flow ratios and heat exchanges between the system units, dependences of thermo-physical properties on the temperature, combustion gas concentrations and the ratio of fuel components in the gas generator. The temperature, pressure, concentration of combustion gases in the system units and the unit structure temperature are specified as input parameters. The simulation results showed satisfactory agreement with the experimental data, which makes it possible to use the developed model for computational and theoretical studies of the hot gas pressure feed systems.
Development and testing of a radio telemetry system for seismic acquisition
Authors: Paz Penagos Hernán , Uyuban Jaime Andrés , Narvaez Alan Mauricio , Ferro Roberto
Published: February 2017

Los métodos sísmicos de prospección constituyen la principal herramienta de exploración y caracterización de reservorios de hidrocarburos, en cualquier cuenca de nuestro planeta. La sísmica de reflexión se puede adquirir en tres tipos de ambientes: marino, terrestre y zonas de transición. Dependiendo de la topografía del área de exploración que se desea iluminar, los sistemas de interconexión de líneas para la adquisición sísmica pueden ser alámbrico o inalámbrico. Este artículo presenta los resultados del desarrollo y pruebas de funcionamiento de una red inalámbrica que interconecta la estación central de registro con tres nodos, en una configuración maestro-esclavo y transmisión bidireccional. Entre dichos puntos se propagó una portadora digital que modula señales banda base para detección de la verticalidad del geófono, y referida al registro de los geófonos. Los resultados obtenidos fueron satisfactorios, en cuanto se transmitió información confiable, aprovechando las ventajas de movilidad de terminales e instalación fácil que ofrecen las redes inalámbricas; sin embargo, se presentaron algunos inconvenientes en la baja tasa de transmisión (limita la tasa de muestreo), y pérdida de datos por el esquema utilizado para el control de flujo y acceso al medio. Esta experiencia de investigación permitió proponer una interconexión alternativa frente al método de interconexión por cable convencional utilizado en la prospección sísmica por reflexión en Colombia.
Estimación de factores de emisión de material particulado resuspendido antes, durante y después de la pavimentación de una vía en Bogotá
Authors: Méndez Espinosa Juan Felipe , Pinto Herrera Laura Catalina , Galvis Remolina Boris René , Pachón Quinche Jorge Eduardo
Published: February 2017

En Bogotá, estudios previos han mostrado que las emisiones de material resuspendido constituyen una parte sustancial del inventario de emisiones e impactan de manera importante la calidad del aire de la ciudad. Esta investigación estimó los factores de emisión (FE) de material particulado resuspendido antes, durante y después de la pavimentación de la vía principal del barrio Caracolí, en la localidad de Ciudad Bolívar, por parte de la Unidad de Mantenimiento Vial del Distrito (UMV). Conjuntamente, se midió el impacto de la pavimentación en la calidad del aire. La valoración del impacto y estimación experimental de FE de polvo resuspendido se obtuvo a partir de mediciones y un análisis estadístico experimental entre concentraciones de PM10, PM2.5, BC y variables meteorológicas al lado de la vía, junto con la aplicación de los modelos de dispersión SCREEN3 y AERMOD. Los factores de emisión estimados para vía no pavimentada fueron 7,8 ± 0,5 g PM10/VKT y 0,6 ± 0,2 g PM2.5/VKT y para vía en proceso de construcción de 28 ± 0,27 μg PM10/m2*s y 11 ± 0,13 μg PM2.5/m2*s. La modelación de dispersión atmosférica de material particulado resuspendido mostró una reducción del área de impacto en aproximadamente 1km y más de un 95% en concentración.
Evaluación espacio-temporal del estado trófico de un lago de grandes dimensiones usando imágenes MOD09GA
Authors: Moncayo Eraso Ricardo Javier , Bueno Trindade Maria De Lourdes
Published: February 2017

Aunque la relación empírica entre imágenes satelitales y datos recolectados en campo del disco de Secchi ha sido demostrada por estudios previos en cuerpos de agua continentales, la creación de líneas base para el monitoreo espacio-temporal que permita identificar la estacionalidad del Índice de Estado Trófico calculado con el Disco de Secchi (IET-DS) ha sido poco explorado en el monitoreo de grandes lagos. Para realizar un ejemplo práctico de la dinámica espacio-estacional trófica en el embalse de Porto Primavera (Estado de São Paulo - Brasil) a partir de mayo de 2000 hasta abril de 2015, se utilizaron imágenes generadas por el sensor MODIS-Terra, e igualmente, dos trabajos de campo fueron realizados para obtener valores del Disco de Secchi (DS). Estos valores se usaron para ajustar y validar un modelo de correlación entre los valores de reflectancia de la banda centrada en los 645nm y el DS. Los resultados indicaron que el modelo tiene un alto coeficiente de determinación (R2 = 0,80) y un moderado error asociado a las estimaciones (RMSE = 0,47m). El análisis de la variación estacional del (IET-DS) muestra el siguiente patrón: la transparencia del lago es afectada por las estaciones seca y lluviosa. El valor promedio de las estaciones de muestreo localizadas en el lago lo clasifican como oligotrófico, las regiones próximas a la desembocadura del río Pardo, presentan una clasificación eutrófica durante gran parte del año; en las temporadas de verano y otoño esta condición se extiende a casi toda la región norte del lago.
Efectos de la lombriz roja californiana (Eisenia foetida), sobre el crecimiento de microorganismos en suelos contaminados con mercurio de Segovia, Antoquia
Authors: Zapata Isabel C. , Martínez Laura , Posada Estefanía , González María E. , Saldarriaga Juan F.
Published: February 2017

Dentro de las actividades que alteran la composición del suelo está la minería, que causa el aumento de daños visibles al suelo mediante la creación de minas a cielo abierto, escombreras, estanques de residuos y otras instalaciones de minas. El objetivo principal de este trabajo fue evaluar el efecto de la lombriz roja californiana sobre el crecimiento de microorganismos en suelos contaminados con mercurio en el municipio de Segovia, Antioquia. Estos suelos representan una problemática importante debido a la acumulación de mercurio en exceso que ocasiona la pérdida de la calidad del suelo. Para este estudio se tomaron cuatro tratamientos en diferentes concentraciones de mercurio y un tratamiento más como blanco con lombrices rojas californianas (Eisenia foetida). Para esto, se evaluó el crecimiento de microorganismos a través de diferentes cultivos en el laboratorio, encontrando un crecimiento satisfactorio de los mismos luego de 25 y 90 días de tratamiento. De acuerdo al comportamiento observado, se evidencia una inmovilización del mercurio y una adaptación de los microorganismos al suelo contaminado, mostrando un aumento significativo de estos con el transcurso del tiempo.
Materiales compuestos de matriz polimérica usados para el blindaje de interferencia electromagnética
Authors: Garzón Posada Andrés Orlando , Landínez Téllez David Arsenio , Roa Rojas Jairo , Ramos Barrado José
Published: February 2017

Este trabajo tiene como propósito revisar el estado del arte en la síntesis y caracterización de materiales de matriz polimérica reforzados con compuestos a base de carbón o ferritas para su uso como materiales atenuadores de interferencia electromagnética (EMI). Recientemente, este tipo de materiales han sido objeto de investigación debido a sus potenciales aplicaciones tecnológicas, economía y de ser además ambientalmente amigables, puesto que polímeros o cauchos reciclados se pueden utilizar para su fabricación. Estos compuestos pueden ser empleados en la producción de blindajes electromagnéticos, transductores, entrega focalizada de medicamentos, marcación de órganos, hipertermia magnética, etc. Para la fabricación de este tipo de materiales compuestos se usan refuerzos particulados, fibras o láminas y como matrices polímeros termoplásticos o termoestables, cauchos sintéticos o naturales. El método de producción de los compuestos (mezcla fundida, métodos químicos, etc.) influye en las propiedades eléctricas, magnéticas y electromagnéticas del material obtenido, debido a la relación de aspecto de los refuerzos: compuestos con elevada relación de aspecto de sus refuerzos tendrán mejores propiedades magnéticas, eléctricas y desempeño frente a la interferencia electromagnética. El blindaje electromagnético de estos materiales se cuantifica a través de la efectividad del blindaje (SE) o en otros casos a través de la pérdida reflectiva (RL). Una efectividad de blindaje de 30 dB corresponde a 99,9% de atenuación de la radiación electromagnética incidente. En todos los trabajos se comprueba que las propiedades del compuesto dependen de la cantidad y del tipo de refuerzo adicionado a la matriz.
Disclouse X sustentabilidade: um estudo das demonstrações contábeis das companhias listadas pela Brazil Stars Index
Authors: Neumann Marguit , Sanches Simone Leticia Raimundini , Ribeiro Roberto Rivelino Martins , Vicentin Rodrigo Moretto
Published: February 2017

O presente estudo buscou verificar nas 16 companhias para as quais foi concedido o rating pela Brazil Stars Index se elas evidenciam e de que forma aparecem os investimentos sustentáveis nas demonstrações contábeis. Considerando que os investidores são usuários externos da informação contábil e que normalmente recebem relatórios contábeis padronizados, partiu-se do pressuposto de que as 16 companhias para as quais foi concedido o rating pela Brazil Stars Index teriam elevados padrões de disclosure dos investimentos sustentáveis nas demonstrações contábeis. A pergunta que norteia a presente pesquisa é: como as companhias estão evidenciando seus investimentos sustentáveis nas demonstrações contábeis? No que tange aos procedimentos metodológicos, a pesquisa classifica-se como aplicada e descritiva quanto aos objetivos, tem caráter pesquisa documental quanto aos procedimentos e pesquisa qualitativa quanto à abordagem do problema. Os resultados revelaram que a disclosure dos investimentos sustentáveis das companhias listadas pela Brazil Stars Index são extremamente tímidas; 43,75% das companhias não apresentaram nenhuma evidenciação. Todavia, a leitura das demonstrações contábeis publicadas na BM&FBovespa revelou que a maioria das empresas evidencia sustentabilidade apenas em seu comentário de desempenho (em vez de apresentar nas demonstrações contábeis e nas notas explicativas) e em forma de balanço social, esse não divulgado junto com as demonstrações contábeis, sendo de difícil acesso para os investidores. As companhias manifestaram suas políticas sustentáveis nas demonstrações financeiras padronizadas por meio de palavras em vez de números, ficando omissos o valor do investimento e seu retorno financeiro.