bluuebunny/crossref_metadata_2025 huggingface dataset:
Structural and Optical Properties of InGaN/GaN Multi-Quantum Well Structures with Different Well Widths
Authors: KIM Young-Hoon , KIM Chang-Soo , NOH Sam-Kyu , LEEM Jae-Young , LIM Kee-Young , O Byung-Sung , Song Jay P.
Published: January 2017

The structural and the optical properties of 10-period In0.15Ga0.85N/GaN multiple quantum wells (MQWs) have been investigated using HRXRD (high-resolution X-ray diffraction) and PL (photoluminescence). For the samples, the barrier thickness was kept constant, 7.5 nm and the well thicknesses were varied, 1.5, 3.0, 4.5, and 6.0 nm. For the structural characterization, an ω/2θ-scan and an ω-scan for GaN (00 2) reflection and a reciprocal space mapping (RSM) around the GaN (10 5) lattice point were employed. The average strain for the MQWs increased as the well thickness increased. The MQW with a 6.0 nm well thickness experienced lattice relaxation and the crystallinity of the sample was poor compared to that of the other samples. MQWs with well thicknesses of 1.5, 3.0 and 4.5 nm, however, maintained lattice coherency with the GaN epilayers underneath, and the critical well thickness for lattice relaxation of the MQWs used in the study was 6.0 nm. The PL spectra showed that the relative emission intensity of the sample with a 6.0 nm well thickness was lower than for the others, a fact consistent with the X-ray results. The emission intensity, therefore, is considered to be affected by defects due to lattice relaxation of the epilayer.
Photoluminescence and Time-Resolved Photoluminescence Studies of Self-Assembled InAs Quantum Dots
Authors: Zhang X. H. , Dong J. R. , Chua S. J.
Published: January 2017

Photoluminescence (PL) spectra and time resolved PL from self-assembled InAs/GaAs quantum dots (QDs) grown by metal organic chemical vapor deposition are studied. A reduction in the emission linewidth with increasing temperature was observed at low temperature range and an increase in the linewidth at higher temperature. It was also observed that the variation of PL peak energy with temperature does not follow Varshni's equation. These anomalous behaviors of PL can be explained in term of thermal redistribution of carriers. It was also found that the PL decay time increases with photon wavelength, which is due to the carrier transfer between laterally coupled QDs.
Dynamic Response of Non-Pixeled Amorphous Silicon Based Image Sensors
Authors: Fernandes M. , Vygranenko Yu. , Vieira M.
Published: January 2017

Large area hydrogenated amorphous silicon p-i-n structures with low conductivity doped layers were proposed as single element image sensors. This work is focused on the analysis of the dynamic behavior of the sensor. Additionally some sensor parameters like maximum scanning speed, from which depends the maximum achievable frame rate are presented and discussed.

In order to evaluate the sensor response to a time varying light excitation the sensor was locally illuminated with a focused chopped light source and the generated photocurrent was measured under different load conditions. Results show that the sensor is mainly capacitive and a signal rise time of approximately 100 νs was measured under a 1 kΩ load. A model for the sensor was created from the experimental data and was used to simulate the dynamic behavior of the sensor. The simulation results obtained are in good agreement with the experimental ones.

As conclusion one can expect a trade off between the frame rate and the number of pixels. A frame rate higher than 10 fps was achieved for 100×100 pixels readout without a significant degradation in the image quality.
Hole-Assisted Lightguide Fiber - A Practical Derivative of Photonic Crystal Fiber
Authors: Hasegawa Takemi , Sasaoka Eisuke , Onishi Masashi , Nishimura Masayuki , Tsuji Yasuhide , Koshiba Masanori
Published: January 2017

Usage of air holes in optical fibers has become a hot subject in fiber optics because of the possibilities for novel transmission properties. Although photonic crystal fibers based on photonic bandgap guidance are the most drastic innovation in this subject, optical fibers containing air holes but not having photonic crystal structures are also being intensively studied. Such air-silica microstructured fibers are more practical than the photonic bandgap fibers because the lack of photonic crystal structure makes the fabrication far easier. Even without the photonic bandgap, the microstructured fibers can exhibit valuable properties in terms of group velocity dispersion and nonlinearity, because the index contrast between air and silica is 10 or more times as large as that of the conventional optical fibers based on doped silica glasses. However, one of the major challenges for practical applications of the air-silica microstructured fibers has been their high transmission losses, which have been several tens to hundreds times higher than those of the conventional fibers. As a solution to this problem, we have proposed a more practical structure called hole-assisted lightguide fiber (HALF). In addition to the air holes for realizing novel optical properties, this structure has a material index profile for waveguiding, and hence is closer to the conventional fibers than the other microstructured fibers are. As a result, novel optical properties can be realized without severe degradation in transmission loss. In experiments, an anomalous group velocity dispersion as large as +35 ps/nm/km at 1550 nm wavelength, which would be unattainable in the conventional fibers, has been realized with a loss of 0.41 dB/km, which is comparable to those of the conventional fibers. Analyses of the losses of the fabricated HALFs suggest that the loss should be lowered by mitigating the effect of the drawing tension and minimizing the power fraction in the holes. It is also shown that the full-vector finite element method realizes accurate modeling of the properties such as dispersion and macrobend loss.
PEMIJAHAN Cherax albertisii SECARA MASAL DI BAK
Authors: Suhardjo Ignatius , Arie Usni , Djajanurdjasa Asep , Juyana Juyana
Published: January 2017

Abstrak bisa dilihat di Lampiran
PEMANTAUAN KUALITAS TANAH PADA TAMBAK BUDIDAYA UDANG VANNAMEI (Litopenaeus vannamei) SECARA INTENSIF
Authors: Sabang Rosiana , Pasande Rifka , Rahmiyah Rahmiyah
Published: January 2017

Abstrak bisa dilihat di Lampiran
DAYA HAMBAT MENIRAN (Phyllanthus niruri) TERHADAP PERTUMBUHAN BAKTERI Aeromonas hydrophila SECARA INVITRO
Authors: Zainun Zakki
Published: January 2017

Abstrak bisa dilihat di Lampiran
Morphologische Untersuchungen tiefreichender Klauenerkrankungen beim Rind
Authors: Müller Matthias , Maierl Johann , Gehringer Susanne
Published: January 2017

Ziel: Im Rahmen einer größeren Studie über morphologische Veränderungen bei tiefreichenden Klauenerkrankungen wurden Klauen mit kompliziertem Rusterholz’schem Sohlengeschwür (RSG) untersucht, um die vielfältigen pathologischen Veränderungen des RSG zu dokumentieren. Material und Methoden: Insgesamt wurden von 55 Rindern Hinterfüße mit erkennbaren Hinweisen auf komplizierte Klauenerkrankungen von außen, am Sagittalschnitt, an Mazerationspräparaten von Zehenknochen und teilweise anhand histologischer Schnitte beurteilt. Von 112 Zehen mit 120 tiefreichenden Klauenerkrankungen wiesen 59 Klauen ein kompliziertes RSG auf. Ergebnisse: Zu den häufigsten Befunden gehörte eine Fibrosierung des Ballenfettgewebes, teils mit Verknorpelung und/oder Verknöcherung. Osteomyelitiden am Tuberculum flexorium (TF) stellten sich am Mazerationspräparat als Osteolysen dar und waren in der Peripherie häufig von periostalen Knochenzubildungen begleitet. Bei hochgradig veränderten Klauen fanden sich Abrissfrakturen des TF. Eine Arthritis des Klauengelenks, oft einhergehend mit subchondraler Osteomyelitis, zeigte sich am Mazerationspräparat mit Osteolysen im Bereich der Synovialgruben und in der Peripherie der Gelenkflächen sowie mit periostalen Knochenzubildungen am Gelenkkapselansatz. Seltener bestanden entzündliche Veränderungen der Bursa podotrochlearis, der gemeinsamen Fesselbeugesehnenscheide und des Krongelenks. Schlussfolgerung und klinische Relevanz: Die Fibrosierung bzw. Verknöcherung des Ballenfetts wird als Anpassung an unphysiologische Belastungsverhältnisse im Sinne einer Metaplasie bewertet. Bei der Ausbreitung des RSG dürfte das TF von zentraler Bedeutung sein. In fortgeschrittenen Fällen kann dort durch entzündlich bedingte Schwächung des Knochengewebes eine pathologische Fraktur mit „Ausriss“ der tiefen Beugesehne entstehen. Zur Infektion des Klauengelenks kann es sekundär im Anschluss an einen Sehnenausriss mit direkter Gelenkeröffnung kommen, doch dürfte die Fortleitung der Infektion über den Gelenkkapselansatz und den subchondralen Knochen in den Gelenkraum häufiger sein. Veränderungen der Bursa podotrochlearis, der gemeinsamen Fesselbeugesehnenscheide und des Krongelenks entstehen vermutlich erst im Gefolge einer Arthritis des Klauengelenks.
The production of novolac oligomers
Authors: Galushchinsky A. N. , Obydennov K. L.
Published: January 2017

The paper presents the improvement of production technology of novolac phenol-formaldehyde oligo-mers by introducing the new scheme of capture of exhaust gases due to waste production, which leads to a reduction of costs and increase economic efficiency. The calculation of the material balance of the pro-duction of novolac phenol-formaldehyde oligomer at 300 kg/h of technical product is performed, the technological calculation of the basic equipment and selection of auxiliary equipment is produced. The apparatus scheme of production is made and the description of the process is represented. The draft of the main reactor is made.
Rotational Advancement in Cleft Nose Rhinoplasty – Buccal Mucosal Grafts Serve as a Powerful Tool
Authors: Kehrer Andreas , Nijhuis Tim H.J. , Pesthy Pál , Willemsen Sten , Poublon René , van der Meulen Jacques J.J.N.M.
Published: January 2017

Objective:

Our aim was to analyze our technique of a modified rotational advancement in conjunction with buccal mucosal grafts (BMGs) in a subgroup of severe cleft cases.

Design:

A retrospective clinical and photographic evaluation was conducted. Columella angle (CA) and tip projection (TPR) served as instruments in a photometric analysis.

Setting:

Academic university hospital and specialized craniofacial cleft center.

Patients:

At the time of the secondary rhinoplasty, 61 cleft patients were included, all 17 years or older.

Interventions:

Rotational advancement with usage of BMGs was performed in selected cases by a single surgeon.

Main Outcome Measures:

Nasal symmetry and aesthetic appearance.

Results:

From 2003 to 2011, 29 unilateral severe cleft cases (group I) underwent a modified alar rotational advancement with BMGs. Group II, with 32 cases, represented patients without BMGs. Technique and management of BMGs were described in detail. The complication rate of donor and recipient site presented as very low. The CA was improved significantly in both groups. Also, TPR improved (not significantly) in group I. Using our technique, we considerably enhanced the aesthetic results and symmetry in secondary cleft rhinoplast.

Conclusions:

Rotating the vestibular skin makes it possible to eliminate the traction of this skin on the repositioned alar cartilage, therefore achieving a more pleasing and stable nasal symmetry in secondary cleft rhinoplasty. Versatile BMGs close this gap, thus making them a powerful tool in the arsenal of the reconstructive cleft surgeon.
Plant-based synthesis of silver nanoparticles and their characteristic properties
Authors: Ullah Muhammad Nauman , Umer Asim , Aadil Mehboob Ahmad , Rehman Faisal , Ramzan Naveed
Published: January 2017

Biosynthesised metallic nanoparticles (NPs) have a wide range of applications in the fields of medicine and engineering. Among various metallic NPs, silver (Ag) NPs have gained extraordinary fame due to their unique properties. Conventional methods for the synthesis of silver NPs are pernicious due to chemical toxicity and various serious biological concerns. Plant extract-mediated synthesis can rapidly and simply produce eco-friendly, well-dispersed and stable silver NPs from silver nitrate in aqueous conditions without employing any reducing and stabilising agent. This paper intends to present an overview of the potential use of various plants for silver NP synthesis with particular emphasis on the extraordinary anticancer and antimicrobial properties of these NPs against a wide range of cancerous cell lines and bacterial strains. Several plant extracts have naturally biodegradable antioxidants which simultaneously act as reducing and stabilising agents for silver NP. Furthermore, this paper highlights optimum situations for the green synthesis of silver NPs by controlling critical parameters, such as pH, temperature, duration of incubation and concentrations of both silver salt and plant extract. Hence, green synthesis of silver NPs is a promising method which allows for synthesis with low cost and low energy requirement.
Iconografía de las Yuccas mexicanas I
Authors: Piña-L. Ignacio
Published: January 2017

Planta arborescente hasta de 7 m. de altura, rara vez algo ramificada. Hojas de 55 a 100 cm. de longitud, agrupadas en el extremo terminal, rígidas y extendidas, con los márgenes filíferos. Inflorescencia erecta. Florece de septiembre a noviembre.
Nuevas compuestas de México
Authors: Paray Ladislao
Published: January 2017

Descricion floristica de 9 especies de compuestas
New mexican grasses
Authors: Swallen Jason R.
Published: January 2017

Las nuevas especies de Bromus, Muhlenbergia, Sporobolus, y Deschampsia se describen aquí, a partir de la colección del Dr. Efraín Hernández X, Rogers McVaugh, E. Matuda y John T. Balwin, Jr., los tipos están en el Herbario Nacional de Estados Unidos.
Introducción al estudio de los manglares
Authors: Cuatrecasas José
Published: January 2017

Con el nombre de manglar se designan ciertas asociaciones vegetales anfibias, leñosas y perennifolias, caracterizadas por una biología estrechamente especializada a singulares condiciones ecológicas que sólo se dan en las costas tropicales. Estos factores ecológicos limitadores de los mangrales son: temperatura media elevada, con escasa oscilación; lluvias abundantes todo el año; intermitente inundación causada por la marea; mezcla del agua salina con la de los ríos en desembocaduras y deltas, favorecida por las mareas. El manglar se inunda periódicamente en la pleamar y emerge en seco con la misma periodicidad durante la bajamar; consecuencia de este fenímeno las plantas del manglar presentan una morfología especial que determina en ellas una fisonomía característica y espectacular.
Estudios citológicos sobre algunas especies del género Tripsacum
Authors: Prywer L. Czeslawa
Published: January 2017

Se describen las diversas fases de la meiosis en Tripsacum maizar : el estudio detallado del paquiteno no reveló la presencia de protuberancias cromosómicas; todas las fases de la meiosis son normales, excepto algunos casos en la anafase I en los que el cromosoma 2 mostró retraso; Se encuentran 18 pares de cromosomas en diaquinesis y en metafase I. Dado que las poblaciones de Tripsacum zopilotense diploide parecen estar en proceso de extinción, no ha sido posible obtener material suficiente para un estudio citológico detallado. Como consecuencia, sólo se presenta una breve descripción preliminar de la primera división meiótica: se encontraron protuberancias cromosómicas terminales muy pequeñas en el paquiteno; Se observaron 18 bivalentes en dialdnesis y en metafase I. Dado que se han encontrado especies de Tripsacum con y sin protuberancias cromosómicas, se llega a la conclusión de que, si realmente existen variedades tripsacoides de maíz, estas no necesariamente se caracterizan por la presencia de protuberancias. en sus cromosomas. La meiosis se describe en el híbrido F1 entre Tripsacum maizar x T. zopilotense ; la sinapsis es casi normal en todos los cromosomas de ambas especies. Los cromosomas de T. maizar no tienen protuberancias, pero muchos de los cromosomas de T. zopilotense tienen protuberancias terminales muy pequeñas. En el híbrido aparecen estas protuberancias, pero sólo un cromosoma de un par tiene dicha protuberancia terminal y es el cromosoma derivado de T. zopilotense . Se encontró un pequeño fragmento cromosómico, libre o adherido al eme de los cromosomas. Se infiere que es un fragmento del cromosoma B. Se encontraron irregularidades que pueden conducir a la formación de gametos no reducidos. Se discute el posible origen del tetraploide Tripsacum en México y países vecinos.
Revisión de técnicas histológicas para el estudio de las algas marinas macroscópicas
Authors: Sánchez-Rodríguez Ma. Elena
Published: January 2017

El estudio de las algas, como el de los vegetales en general, requiere un conocimiento estructural externo e interno. El primero puede efectuarse a simple vista, mientras que para el segundo es necesario un estudio microscópico observando cortes o preparaciones adecuadas preparadas por técnicas histológicas.
Plantas nuevas del sur de México
Authors: Miranda F.
Published: January 2017

Florística, descripciones de plantas del sur de México
Los penstemons de México. II. Penstemon hartwegii, Penstemon gentianoides y sus aliados
Authors: Straw Richard M.
Published: January 2017

In the genus Penstemon from Mexico, a new section, Fasciculus, and a subsection, Fasciculi, are described. The subsection contains eleven species, of which six are new: PP. occiduus, leonensis, skutchii, filisepalis, mohinoranus, and plagapineus . Evolution in this group is discussed.
Meiosis en Tripsacum zopilotense Hern. y Rand.
Authors: Prywer L. Czeslawa
Published: January 2017

Se describen las fases de la meiosis en Tripsacum zopilotense de la tribu Maydeae. Es muy difícil conseguir un número mayor de plantas; se han fijado espigas de cuatro plantas colectadas en 1953 y de una planta en 1958. Todas las fases de la meiosis son normales. En diacinesis y metafase 1 se pueden contar con claridad 18 bivalentes. La fase de paquitene presenta ciertas diferencias entre las plantas colectadas en 1953 y 1958:a) En los meiocitos de las primeras plantas los cromosomas contienen nudos cromosómicos muy pequeños en las terminaciones de los cromosomas. b) En los meiocitos de la segunda colección existen también nudos cromosómicos pero en número muy bajo o no hay nudos. A base de estas observaciones se llega a la conclusión de que pueden existir razas de Tripsacum zopilotense con un número alto de nudos cromosómicos en el estado de paquitene y otras con un número bajo de nudos o aún sin nudos.
Sistemática, histología y ecología de los hongos del género Helvella del Valle de México
Authors: Gómez Palmira , Herrera Teófilo
Published: January 2017

En el presente trabajo se estudiaron cinco especies del género Helvella del Valle de México: H. lacunosa, H. crispa, H. elastica, H. infula y H. atra . Por medio de estudios morfológicos, tanto macro como microscópicos e inclusive histológicos, se intentó caracterizar a cada especie y facilitar su colocación taxonómica. También se estudiaron las condiciones ecológicas de desarrollo de estas especies en algunas regiones del Valle de México.
Relaciones geográficas y posibles orígenes de la flora de México
Authors: Rzedowski J.
Published: January 2017

El autor intenta una revisión bibliográfica de lo escrito sobre el tema de las relaciones geográficas y posibles orígenes de la flora de México. Esta flora es particularmente rica y diversificada debido a: a) una gran variedad de condiciones climáticas y fisiográficas; b) las intensas migraciones de floras ocurridas en el pasado sobre el territorio del país; c) el hecho de que México fue un importante centro de evolución de linajes vegetales; d) un origen muy diverso de sus componentes.
Las gramineas dioicas de México
Authors: Reeder John H.
Published: January 2017

En resumen, hemos señalado que existen más géneros de gramíneas dioicas en México que en ningún otro país del mundo. Al parecer esta área geográfica ha sido un centro importante para la evolución de la dioecia en las gramíneas.Hemos querido sugerir también la forma en que se ha desarrollado el dimorfismo sexual, y cuáles son las tendencias más importantes hacia la especialización. Se continúan haciendo investigaciones con estas gramíneas, con la esperanza de aprender más acerca de todos los aspectos de estas taxa, y, tal vez, aportar más luz al problema fascinante de la evolución de la dioecia en las plantas.
Sobre la utilización del microscopio electrónico de barrido en el estudio de hojas fósiles del cretácico inferior de Patagonia, Argentina
Authors: Archangelsky Sergio
Published: January 2017

Se dan a conocer los resultados del estudio de cutículas fósiles del Cretácico inferior de Argentina mediante el uso del microscopio electrónico de barrido. Esta técnica ha sido aplicada en varios géneros de los Ordenes Bennettitales y Cycadales (Gimnospermae). Se ha centrado el estudio en los caracteres más salientes, en especial los aparatos estomáticos que en las Bennettitales presenta una estructura constante -que fue denominada papilia- vinculada al engrosamiento dorsal de las células oclusivas. Con aumentos del orden de los 30,000 x. se han observado microelementos esculturales que se distribuyen con variada compaciclad en distintas membranas, discutiéndose la posible naturaleza de los mismos. Se concluye que la nueva técnica permite ampliar sustancialmente el conocimiento de los rasgos morfológicos de las cutículas con el agregado de nuevos elementos y una mejor definición de las estructuras ya conocidas.
Prefacio
Authors: Sánchez-Rodríguez Mario
Published: January 2017

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El papel de los herbarios en los estudios ecológicos, fitogeográficos y en la investigación sobre el aprovechamiento de los recursos naturales
Authors: Asteinza-B. Gaiska
Published: January 2017

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Comentario al tema: El herbario como base de estudios taxonómicos, florísticos y evolutivos
Authors: Espinosa-Garduño Judith
Published: January 2017

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Tres dicotiledóneas mexicanas nuevas de posible interés ornamental
Authors: Rzedowski J.
Published: January 2017

Populus simaroa, Castilleja venusta y Montarnoa gigas se describen como nuevas a base de material colectado en los estados de Guerrero y México. Populus simaroa sp.n. pertenece a la sección Populus y posiblemente está relacionada con P . grandidentata Michx. Es particularmente notable en su comportamiento fenológico, pues el árbol pierde las hojas al iniciarse la época lluviosa y se cubre de follaje al principio del período de sequía. Se conoce de un área relativamente amplia, pero en general parece ser planta escasa. Castilleja venusta sp.n. es una planta anual, que se diferencia de los demás miembros ele la sección Epichroma por el conspicuo labio inferior de la corola. Sólo se ha colectado en el Cerro Teotepec, Guerrero. Montanoa gigas sp.n., árbol hasta de 20 m de alto, pertenece al grupo de M . quadrangularis Sch. Bip. y se distingue de M. hexagona Rob. & Greenrn. principalmente en la morfología de sus páleas. Se conoce de varias localidades de la Sierra Madre del Sur de Guerrero.
Preliminary list of mosses collected from tree branches in Mexico
Authors: Thornburgh K.
Published: January 2017

List of species of epiphytic mosses
Estudios demográficos en plantas. Astrocaryum mexicanum Liebm. 1. Estructura de las poblaciones
Authors: Piñero Daniel , Sarukhán José , González Enrique
Published: January 2017

Este trabajo es el inicial de una serie de estudios demográficos sobre Astrocaryum mexicanum que se encuentra en desarrollo desde 1975. En él se describe la estructura de las poblaciones de A. mexicanum , así como la composición florística arbórea de seis sitios permanentes de observación de 600 m2, situados en la selva alta perennifolia de la Estación de Biología Tropical Los Tuxtlas en el Estado de Veracruz, México. Para las poblaciones de A. mexicanum se analizan la distribución de alturas, radios de copa y número de hojas vivas, estableciéndose las relaciones estructurales entre los sitios. En lo que se refiere a la distribución de alturas (dado que hemos encontrado una relación directa entre altura y edad), cuatro de los sitios tienen una distribución "normal" de edades, mientras que los otros dos muestran alteraciones, probablemente debidas a sobrevivencias diferenciales de ciertas clases de edad. Para las comunidades vegetales de los sitios se analizó la composición en cuanto a los individuos con d.a.p. >= 3.3 cm. Para establecer las relaciones florísticas entre los sitios se usó un análisis de componente principal, que nos muestra diferencias estructurales entre sitios que son muy semejantes, en cuanto a la densidad total de A. mexicanum . También se comparan las características estructurales de los sitios con las de otras selvas altas perennifolias del mundo, encontrándose que esta selva tiene características estructurales (como son áreas basales y densidades) muy similares a aquéllas.
Flora of the Cuatro Cienegas bolson region, Coahuila, Mexico, I.
Authors: Pinkava Donald J.
Published: January 2017

The Bolsón de Cuatro Ciénegas and the surrounding mountain ranges that are located on the eastern edge of the Chihuahuan Desert in the central part of the State of Coahuila in Mexico support a diverse vegetation with a rich flora. The bag is extraordinary in that there are extensive chalky dunes, and copious warm and mineralized water such as lagoons, beaches, rivers, underground conduits, wells, artesian wells, and swamps. The research region includes approximately 2,00 square km and the altitude varies from 700 m at the bottom of the pocket to more than 3,000 m at the top of the Sierra de la Madera. The vegetation is divided into the following zones: 1) grassland, 2) aquatic and semi-aquatic environments, 3) chalky dunes, 4) transition, 5) scrubby desert, 6) chaparro, 7) oak and piñon forests, 8) montane forests Pine, Fir, and Pseudotsuga. The known flora of vascular plants is made up of 824 taxa corresponding to 796 species of 429 genera of 111 families. The typical localities of 26 taxa are in this region and 8 of them are endemic.
Cronología de los principales acontecimientos históricos de la Sociedad Botánica de México
Authors: Lot Antonio , Carvajal Magda
Published: January 2017

La presente compilación está basada fundamentalmente en la información registrada en las Actas de las Sesiones de la Sociedad Botánica de México, en el Macpalxochitl (boletín informativo) y en el propio Boletín de la Sociedad Botánica de México. Los compiladores agradecen al Dr. Carlos Vázquez-Yanes, Biol. Francisco Brizuela y Bibliógrafo Armando Butanda su colaboración en la búsqueda y síntesis de parte de la documentación considerada.
ICTs and Poverty in Latin America
Authors: Rodríguez John Gabriel , Sánchez-Riofrío Angélica
Published: January 2017

Poverty reduction has been a subject widely discussed and analyzed by different academic disciplines, however, so far has not found a magic formula to mitigate this problem. The main objective of this paper is to analyze the contribution of Information and Communication Technologies (ICTs) to the eradication of poverty in developing countries. The main result of this work is that technological change is an important factor for the reduction of poverty and inequality in the Latin American region. For ICTs to increase the total factor productivity of each country, policies are needed to improve the quality of education, protection of property rights and access to ICTs for households and for public and private enterprises.
Reseña: Drogas, Bandidos y Diplomáticos: formulación de política pública de Estados Unidos hacia Colombia.
Authors: Moreno Torres Aurora Inés
Published: January 2017

Uno de los temas centrales de las relaciones internacionales entre Estados Unidos y Colombia se ha dirigido a la ayuda militar que recibe Colombia en lo que se ha denominado Plan Colombia.
The Healthy Brain Network Serial Scanning Initiative, Sessions 2-7 and 9-14 v1
Authors: O'Connor David , Natan Vega Potler not provided , Meagan Kovacs not provided , Xu Ting , Lei Ai not provided , John Pellman not provided , Tamara Vanderwal not provided , Lucas Parra not provided , Samantha Cohen not provided , Satrajit Ghosh not provided , Jasmine Escalera not provided , Natalie Grant-Villegas not provided , Yael Osman not provided , Anastasia Bui not provided , R Cameron Craddock not provided , Michael P Milham not provided
Published: January 2017

This protocol describes MRI, voice recoding, and some basic physiological measurements and questionnaires for Sessions 2-7 and 9-14 of the following work: David O'Connor, et. al. (2017) The Healthy Brain Network Serial Scanning Initiative. GigaScience...
The Healthy Brain Network Serial Scanning Initiative, Session 1 v1
Authors: O'Connor David , Natan Vega Potler not provided , Meagan Kovacs not provided , Xu Ting , Lei Ai not provided , John Pellman not provided , Tamara Vanderwal not provided , Lucas Parra not provided , Samantha Cohen not provided , Satrajit Ghosh not provided , Jasmine Escalera not provided , Natalie Grant-Villegas not provided , Yael Osman not provided , Anastasia Bui not provided , R Cameron Craddock not provided , Michael P Milham not provided
Published: January 2017

This protocol describes MRI and ADHD Quotient Test for Session 1 of the following work: David O'Connor, et. al. (2017) The Healthy Brain Network Serial Scanning Initiative. GigaScience...
Counselors' Attributions of Blame Toward Female Survivors of Battering
Authors: Notestine Lori E. , Murray Christine E. , Borders L. DiAnne , Ackerman Terry A.
Published: January 2017

Intimate partner violence (IPV) is a social problem that affects roughly 5.3 million women in the U.S. each year, accounts for 1,300 deaths, and often results in a number of physical and mental health consequences. Many women seek counseling as a way to find relief from the symptoms of the abuse they have endured. Previous research indicates that women seeking counseling after facing intimate partner violence victimization have reported experiencing counseling resources as inadequate or blaming. In the current study, counselors (N = 122) were surveyed regarding their gender role attitudes, ambivalent sexism, training in family violence, and attributions of blame toward women who have been battered. The regression analysis suggested that 16% of the variance in blame attributions was accounted for by gender role attitudes and ambivalent sexism. Study findings provide directions for future research and implications for practicing counselors.
Neurocounseling: A New Section of the Journal of Mental Health Counseling
Authors: Beeson Eric T. , Field Thomas A.
Published: January 2017

Despite the growing momentum to infuse neuroscience into counseling, neuroscience-related publications are relatively scant in flagship counseling journals. In response, this January 2017 edition of the Journal of Mental Health Counseling introduces a new section entitled “Neurocounseling” that will remedy this gap in the literature. This article provides a rationale for the creation of the Neurocounseling section that includes a discussion of current trends in research initiatives, the evolution of the term neurocounseling, and the existing neuroscience-related publications in flagship counseling journals. Additionally, this article outlines the vision for the Neurocounseling section that will aid readers as they conceptualize and conduct neurocounseling research as well as prepare manuscripts for publication.
Guided Growth for Correction of Knee Flexion Contracture in Patients with Arthrogryposis: Preliminary Results
Authors: Trofimova Svetlana I. , Buklaev Dmitry S. , Petrova Ekaterina V. , Mulevanova Svetlana A.
Published: January 2017

Background. Knee flexion contractures frequently present in children with arthrogryposis and significantly alter kinematics of walking and reduce efficiency of ambulation or render it impossible. There are variety of surgical options for contracture correction, including entire soft-tissue release or its combination with Ilizarov ex-fix and supracondylar femoral osteotomy. Choosing of the most effective surgery is challenging because every method has limitations.Aim. To evaluate the treatment outcomes of knee flexion deformity correction by guided growth in patients with arthrogryposis.Materials and methods. A total of 12 patients (20 knee joints) with arthrogryposis who underwent anterior distal femoral hemiepiphysiodesis with 8 plates for knee flexion contracture correction were included in the study. The average age at surgery was 6.5 ± 0.5 (range, 4.3–9.6) years. Clinical and radiological methods were used with statistical analysis of the data.Results. The mean preoperative knee flexion deformity angle was 48.5° ± 4.04° (range, 20°–80°). After distal femoral hemiepiphysiodesis, a reduction of knee flexion contracture was observed in 17 (85%) patients during a follow-up period of 18–36 months. The average correction was 20° ± 2.67° (range, 0°–40°) (p < 0.05). The residual deformity angle was 28.5° ± 6.03° (range, 0°–60°). Patients with contractures up to 50° demonstrated the most significant correction (by 90% compared with the initial value) (p < 0.05). This group included patients with severe flexion contractures, treated by serial casting, combined with an extension devise before surgery, which contributed to a significant reduction of the contracture.Conclusion. Distal femoral hemiepiphysiodesis is an effective, safe, and reproducible surgical option for knee flexion contractures in patients with arthrogryposis. Combination with additional methods enables significantly reduction of knee flexion deformities from severe to moderate, thereby rendering treatment more effective with a shorter duration, which allows prompt improvement in ambulatory capacity.
A plantographic study of the support function of the foot in children with the malformations of the forefoot
Authors: Nikityuk Igor E. , Kovalenko-Klychkova Nadezhda A.
Published: January 2017

Assessment of the anatomical and functional state of the feet in of children with malformations of the anterior foot has significant theoretical and practical value. The purpose of this study was to investigate the morphological and functional parameters of the feet in children with malformations of the anterior foot to assess load imbalance and to identify structural and functional disorders using computed plantography techniques. A plantogram analysis was conducted in 64 children aged 5–16 years with foot malformations followed by mathematical processing of plantographical characteristics of the feet (angles, indices, and ratios). The nature of the revealed deviations indicates disturbances of the statics of the affected foot and the inferiority of its dynamic functions (disturbed phase of rolling through the forefoot when walking), which indicates the appropriateness of surgical reconstruction of the anatomy of the foot to improve function.
Commentary on "Sonata Form in the Nineteenth-Century Symphony"
Authors: Duane Ben
Published: January 2017

This commentary compares observational corpus analysis and hypothesis-driven analytical methods, and discusses the methods used in Cannon's "Sonata Form in the Nineteenth-Century Symphony" article.
The "Rhythmic Fingerprint": An Extension of the nPVI to Quantify Rhythmic Influence
Authors: Daniele Joseph R
Published: January 2017

This article is in response to Leigh VanHandel's "The War of the Romantics: An Alternate Hypothesis Using nPVI for the Quantitative Anthropology of Music." (2016) I address comments made in VanHandel's response and propose a new tool, the "rhythmic fingerprint," to move away from representing a composer as a single value (e.g. mean nPVI) and more accurately quantify and classify rhythmic influence within a composer's lifetime.
Commentary on Huron and Trevor (2016)
Authors: M Daniel
Published: January 2017

This commentary offers a review of Huron and Trevor's article on the relationship between the likelihood of a composition and performance using stopped strings, and its overall sadness.
The War on Language: Providing Culturally Appropriate Care to Syrian Refugees
Authors: Roy Meagan A
Published: January 2017

ABSTRACTOntario’s Ministry of Health and Long-Term Care released a document in January 2016 regarding medical care of Syrian refugees as an effort to support primary care providers in the care and early assessment of their new patients [1]. The fourteen-page document provides an overview of the transition to Ontario medical care, from the Immigration Medical Examination prior to the refugee’s entry into Canada, to health insurance coverage resources and information [1]. Health care providers may welcome this plethora of informa­tion, but the presence of a language barrier may prove to be the most considerable issue. RÉSUMÉEn janvier 2016, le ministère de la Santé et des Soins de longue durée de l’Ontario a publié un document au sujet des soins médicaux pour les réfugiés syriens, pour appuyer les fournisseurs de soins primaires lorsqu’ils soignent et effectuent l’évaluation initiale de leurs nouveaux patients [1]. Le document de quatorze pages fournit un survol de la transition vers les soins de santé ontariens, allant de l’examen médical aux fins d’immigration précédant l’entrée du réfugié au Canada, à de l’information sur les régimes d’assurance-maladie [1]. Les professionnels de la santé recevront sans doute favorablement cette abondance d’information, mais la présence d’une barrière linguistique pourrait se révéler comme étant le problème le plus substantiel.
The Effect of Conflict and Displacement on the Health of Internally Displaced People: The Colombian Crisis
Authors: Barrera Ramirez Juliana Andrea , Franco Hernan Dario
Published: January 2017

ABSTRACTDecades of violence in Colombia led to the relocation of millions of rural families into urban areas, where the violation of human rights and abuse add to the struggle to meet most basic needs. Lack of housing, economic instability, poor access to healthcare and educa­tion impact their overall health. Unfortunately, implementation of laws created to alleviate the crisis has been unsuccessful, as armed groups target aid efforts through violence and threats. While the role of physicians is limited, advocacy and collaboration with other organizations can help improve the health and well-being of this population. RÉSUMÉDes décennies de violence en Colombie ont mené au relogement de millions de familles rurales vers des milieux urbains, où la viola­tion des droits de la personne et les sévices exacerbent la lutte pour subvenir aux besoins fondamentaux. Le manque de logement, l’instabilité économique, et l’accès restreint aux soins de santé et à l’éducation ont un impact sur leur santé globale. Malheureuse­ment, l’établissement de lois conçues pour alléger la crise s’est révélé sans succès, puisque des groupes armés ciblent ces efforts d’aide humanitaire avec de la violence et des menaces. Bien que le rôle des médecins soit limité, les activités de plaidoyer et la collaboration avec d’autres organismes peuvent aider à améliorer la santé et le bien-être de cette population.
Mind the Gap: Improving Pediatric Cancer Care in Developing Countries
Authors: Quilty Rebecca
Published: January 2017

ABSTRACTDespite the fact that the majority of childhood cancer cases occur in the developing world, pediatric oncology in developing countries has not been afforded the ground breaking advances and successes that are available in developed countries. It is an underestimated global child health concern, and the factors contributing to the two-tiered cancer outcome profile between developed and developing countries are complex and expansive. There are some initiatives in place, such as the twinning program, that are successfully improv­ing cancer treatment in resource-limited regions, but more international advocacy is needed to make state of the art cancer therapy available to all children.  RÉSUMÉBien que la majorité des cas de cancers pédiatriques se produisent dans des pays en voie de développement, l’oncologie pédiatrique dans ces pays n’a pas pu profiter des avancées révolutionnaires qui sont accessibles dans les pays développés. Cela est un problème de santé pédiatrique mondiale sous-estimé, et les facteurs contribuant au profil à deux paliers des taux de survie du cancer entre les pays développés et ceux en voie de développement sont complexes et de grande ampleur. Il y a des initiatives en place, tels les pro­grammes de jumelage, qui améliorent avec succès le traitement du cancer dans les régions possédant des ressources limitées, mais plus de défense internationale des droits des enfants est nécessaire pour assurer la disponibilité des toutes dernières thérapies contre le cancer pour tous les enfants.
To study the prevalence of insulin resistance in non-diabetes hypertensive subjects
Authors: Mohan Gurinder , Kaur Ranjeet , Nayyar Gursimran Singh , Singh Parminder
Published: January 2017

Background: Hypertension is an important medical and public health problem in both developed and developing countries. It is an important risk factor for morbidity and mortality from coronary heart disease, stroke and renal disease. It is well recognized that hypertension coexists in varying degrees with conditions of obesity, insulin resistance/hyperinsulinemia and dyslipidemia, the interrelated metabolic disorders characteristic of metabolic syndrome.Methods: The study was carried out at Sri Guru Ram Das hospital, Amritsar, Punjab, India. A total of 150 patients were taken, out of which 75 were hypertensive and 75 healthy subjects more than 18 years of age were recruited. Serum insulin concentration was measured using a solid phase enzyme linked immunoassay based on the sandwich principle. Insulin resistance was determined by HOMA-IR (homeostasis model assessment of insulin resistance).Results: Statistically, the mean fasting serum insulin level was 17.09±8.17 μIu/ml in cases and 9.33±2.67μIU/ml in controls (reference range 2-25 μIU/ml); the difference was statistically significant (P <0.001). The mean value of HOMA-IR in cases was 3.86±1.84 as compared with controls with mean HOMA -IR value of 2.01±0.62. This difference was statistically significant (P <0.001).Conclusions: Essential hypertension is significantly associated with higher mean fasting insulin levels and insulin resistance. Hyperinsulinemia has a possible role in the pathophysiology of essential hypertension with insulin resistance being the likely predominant mechanism.
Assessments of infection after total knee replacement with three years follow up period
Authors: Rudani Suresh , Kotak Abhinav
Published: January 2017

Background: Knee replacement surgery also known as knee arthroplasty can help relieve pain and restore function in severely diseased knee joints. The aim of the study was designed to determine the current incidence and outcome of infected total knee arthroplasty (TKA) in our unit.

Methods: Present study was performed at department of orthopedics, Gujarat Adani institute of medical science, Bhuj, Kutch, Gujarat. Questionnaire was designed as per our needs and we explained the study to all the individuals who had undergone knee replacement surgery in three years. In the questioner the patient were asked whether they had any suspicion of infection in the joint or wound after the knee surgery. If there reply was found to be affirmative than next they were asked if they had any reddened wound area, any inflammation area, readmission to the hospital due to infection, pus discharge from the wound, any further debridment or resurgery was planned for their infection and whether they were asked to take antibiotics to rule out infection.

Results: Infection was identified in 20 patients of the study. All the cases underwent culture media for detection of microorganisms. Staphylococcus and E. coli were identified in majority of the cases. Six patients had undergone revision of their primary TKA for deep infection; four were having a two-stage revision with no sign of residual infection at the latest review; the oxford knee score when calculated were found to be 35, 38, 45, 48 respectively.

Conclusions: During this study period, infection after primary TKA was rare but devastating and invariably led to a poor outcome.
Nonoperative management of spontaneous epidural hematoma in hemophilia A
Authors: Thora Ankit , Bhatnagar Nishit , Tiwari Anurag , Lingaiah Purushotham , Rustagi Nitesh
Published: January 2017

Background: Spontaneous epidural haematoma is a rare clinical presentation and may be associated with coagulation disorders. These hematomas present usually with rapidly developing paraparesis and any delay in diagnosis may be disastrous.

Methods: We included five patients of spontaneous epidural hematomas in hemophilia A with neurological deficit. They were treated non-operatively with factor VIII replacement therapy with oral tranexamic acid and intravenous dexamethasone as per protocol. All patients were followed up for 6 months and assessed for signs of neurological recovery and radiological resolution of hematoma.

Results: All patients had complete motor recovery within 3 months of initiating treatment and showed resolution of hematoma on MRI.

Conclusions: Prognosis following early initiation of correction of factor deficiency is good.
Mathematical description of the interaction between a probing microwave signal and the helicopter main rotor blade
Authors: Danilin A. I. , Zhukov S. V. , Popov M. S.
Published: January 2017

The paper deals with the non-contact method of monitoring the integrity of the main rotor blades of a helicopter. The available methods of monitoring the integrity of the main rotor blades of the helicopter are labor-intensive to implement, their reliability is low and they do not allow drawing a general picture of the state of rotor blades in flight. To solve this problem a method based on illumination of the blades by a probing microwave signal is proposed. Particular attention is given to the calculation of the power of the signal reflected from the helicopter main rotor blades. In deriving analytic equations it is assumed that a rotor blade is an undeformed flat metal surface. As a result, a spatial-temporal model of a probing SHF signal reflected from a helicopters main rotor blade has been obtained and the parameters of the model make it possible to assess the operational status of the main rotor of the helicopter.
Improvement of adhesive properties and load capacity of the lubricant layer of friction units
Authors: Gromakovsky D. G. , Koptev A. A. , Kryshen E. D. , Haustov V. I. , Shigin S. B.
Published: January 2017

The results of development of the technologies ensuring an increase of wear resistance, lowering of noise and vibration level in frictional units are discussed in the paper. The most efficient technologies of formation of fluorinated microsized films on the friction surface improving the wear resistance, contact fatigue and durability of connection of the lubricant layer with friction surfaces; molecular reinforcement of surface defects decelerating the development of fatigue damages; the effect of multilubrication improvng adhesion and load characteristics of the lubricant layer, its absorbing capacity, etc. are determined. The technology of formation of fluorinated films is implemented by the introduction of graphite fluoride additive to lubricant oil. In the case of molecular reinforcement the effect of increasing wear resistance and contact endurance is connected with the passivation of surface defects formed in final treatment. Defect passivation is realized by dipping of the processed details in the oil containing solid particles in the resonant mode. In the case of multilubrication the effect of creating an underlayer of lubricant on the basis of a highly adhesive material, for example, of polimetilsiloksan produced by the JSC TogliattiAzot is realized. The creation of a low frequency cavitational method and installations for washing parts of friction units at the Nadezhnost Research and Development Center of SSTU is a important collateral development. The first installations are implemented at the JSC Progress SpaceRocket Center and the JSC Aviaagregat of the Tekhnodinamika Holding.