WorldWideScience

Sample records for algo tan subjetivo

  1. Tanning

    Science.gov (United States)

    ... Skip section navigation (navigation may have changed) Section navigation Body: Understanding your body Your reproductive health Puberty ... that tan is dangerous both outside and inside. Indoor tanning salons use light bulbs in the beds ...

  2. El bienestar subjetivo: Actualidad y perspectivas

    Directory of Open Access Journals (Sweden)

    Guillermo Díaz Llanes

    2001-12-01

    Full Text Available Se realizó una revisión de los trabajos sobre bienestar subjetivo publicados en el mundo en los últimos años y se analizaron críticamente los resultados obtenidos tomando en consideración algunos de los fundamentos epistemológicos que les sirvieron de sustento. La enorme vigencia de los estudios sobre bienestar subjetivo en la actualidad pone de manifiesto la creciente conciencia de los investigadores acerca de la importancia del estudio de los factores que tributan a la salud desde una perspectiva positiva. La comprensión de la compleja madeja de interacciones que determinan el bienestar subjetivo en los niveles macrosocial, microsocial e individual, resulta requisito indispensable para la instrumentación de intervenciones en el nivel primario de atención y así elevar dicho indicador, tan ligado a la salud.A review of the papers on subjective well-being published in the world during the last years was made. The results obtained were critically analyzed taking into account the epistemological foundations that served as a sustenance. The fact that the studies about subjective well-being are still in force shows the increasing awareness of the investigators about the importance of studying those factors influencing positively on health. The understanding of the complex skein of interactions determining the subjective well-being at the macrosocial, microsocial and individual levels is an indispensable requirement for the implementation of interventions at the primary health care level and for elevating this indicator so closely related to health.

  3. Bienestar Subjetivo en Adultos Mayores Venezolanos

    OpenAIRE

    Marisela Virginia Arraga Barrios; Marhilde Sánchez Villarroel

    2010-01-01

    Se determinó el bienestar subjetivo de adultos mayores venezolanos, mediante estudio descriptivo, no experimental, de campo, con 633 personas entre 60 y 85 años a quienes se les aplicó la Escala de felicidad de Lima-adaptada. Los resultados mostraron que el 78,4% de los participantes posee alto nivel de Bienestar subjetivo, el 19,6% moderado y el 2,1% bajo. De las cuatro dimensiones que conforman la variable, "Satisfacción con la vida", "Alegría de vivir" y "Sentido positivo de la vida" obtuv...

  4. El bienestar subjetivo: Actualidad y perspectivas

    OpenAIRE

    Guillermo Díaz Llanes

    2001-01-01

    Se realizó una revisión de los trabajos sobre bienestar subjetivo publicados en el mundo en los últimos años y se analizaron críticamente los resultados obtenidos tomando en consideración algunos de los fundamentos epistemológicos que les sirvieron de sustento. La enorme vigencia de los estudios sobre bienestar subjetivo en la actualidad pone de manifiesto la creciente conciencia de los investigadores acerca de la importancia del estudio de los factores que tributan a la salud desde una persp...

  5. Motivos, personalidad y bienestar subjetivo en el voluntariado

    Directory of Open Access Journals (Sweden)

    Marcial E. Cabrera-Darias

    2015-10-01

    Full Text Available El principal objetivo de este estudio fue analizar las relaciones entre las motivaciones del individuo para participar en actividades de voluntariado, los rasgos de personalidad y el bienestar subjetivo. Participaron 153 adultos, de edades entre los 17 y 65 años, que cumplimentaron las distintas medidas tanto on-line como en papel y lápiz. Los resultados mostraron que las motivaciones previas diferían entre los dos grupos de voluntarios. Los análisis correlacionales indicaron que algunos motivos como petición de la organización, circunstancias personales o experiencias vividas se asociaban a satisfacción vital y a emociones negativas en los voluntarios on-line, mientras que hacer algo útil o sentimientos de paz eran los motivos asociados a estos indicadores de bienestar para los voluntarios de la prueba en papel. Los rasgos de personalidad, principalmente el neuroticismo, mostraron relaciones más consistentes con el bienestar que las motivaciones en ambos grupos de voluntarios. Los análisis de regresión indicaron que las facetas de extraversión, como el gregarismo, la calidez o la actividad, fueron los predictores más potentes del bienestar de los voluntarios que hicieron las pruebas en papel; mientras que la disciplina, faceta de la responsabilidad, y la estabilidad emocional predecían el bienestar de los voluntarios on-line. Estos hallazgos sugieren que existen distintos perfiles de voluntarios que podrían estar determinando su participación en diversas actividades o colectivos. Además, las características personales parecen tener un mayor efecto en el bienestar que las motivaciones.

  6. Design and Development of AlgoWBIs

    Directory of Open Access Journals (Sweden)

    Kavita

    2013-09-01

    Full Text Available AlgoWBIs has been developed to support algorithm learning. The goal to develop this tool is to empower educators and learners with an interactive learning tool to improving algorithm’s skills. The paper focuses on how to trim down the challenges ofalgorithm learning andalso discusses how this tool will improve the effectiveness of computer facilitated interactive learning and will support in reducing stress of learning. It will aid computer science graduate and undergraduate learners.Perspective development model has been used for development to enhance the tool’s features.

  7. Bienestar Subjetivo en Maximizadores y Satisfacedores

    OpenAIRE

    Emilio Moyano-Díaz; Felipe Cornejo; Marcela Carreño; Alejandra Muñoz

    2013-01-01

    El propósito aquí es evaluar una tendencia decisional cuyos polos son la simple satisfacción hasta la maxi - mización, y sus efectos eventuales sobre el bienestar subjetivo (B.S.), en sus componentes afectivo (felicidad) y cognitivo (satisfacción vital). Una muestra de 209 estudiantes de la Facultad de Psicología de la Universidad de Talca, respondió un cuestionario con cuatro instrumentos para medir maximización-satisfacción y B.S. Los resultados muestran diferencias significativas entre los...

  8. Pluralismo moral y bienestar subjetivo del consumidor

    Directory of Open Access Journals (Sweden)

    Abraham Aparicio-Cabrera

    2014-01-01

    Full Text Available Este artículo, elaborado desde una perspectiva teórica, sugiere que el acto de consumo en la sociedad contemporánea se realiza al amparo de un grupo de valores, difundidos de manera casi única (monismo moral, acordes con una ética que concibe la felicidad de forma hedonista. Este monismo moral podría explicar, en parte, la débil correlación entre el consumo y el bienestar subjetivo (felicidad y/o satisfacción con la vida; por lo tanto, este artículo aconseja que el consumidor conozca el papel que juega el consumo en la autorrealización personal según diversas ofertas de vida buena (pluralismo moral. El pluralismo moral aplicado al mundo del consumo permitiría obtener, mediante el diálogo, un conjunto de valores compartidos que definieran una identidad moral alternativa para el consumidor contemporáneo, desde la cual practique un tipo de consumo que repercuta de manera más significativa sobre su bienestar subjetivo.

  9. Bienestar psicológico subjetivo y personas mayores residentes

    OpenAIRE

    Ana Concepción Flecha García

    2014-01-01

    La mejora del bienestar psicológico subjetivo y, con él, la calidad de vida de las personas mayores residentes es el propósito esencial de este trabajo. Los teóricos destacan la importancia que desempeña el bienestar subjetivo sobre la calidad de vida y su interés en la experiencia de envejecer. Concebimos la calidad de vida como un concepto multidimensional que engloba componentes objetivos y subjetivos referidos al bienestar físico...

  10. Inteligencia Emocional y Bienestar Subjetivo: un estudio en adolescentes

    OpenAIRE

    Andrés Cruz, Verónica

    2012-01-01

    Dissetenes Jornades de Foment de la Investigació de la FCHS (Any 2012) En el presente estudio se pretende conocer la relación existente entre la Inteligencia Emocional (IE) y el Bienestar Subjetivo (BS), para saber si los adolescentes con mayor Inteligencia Emocional muestran un mayor Bienestar Subjetivo. Para ello, se ha aplicado el test MSCEIT para medir la IE y el test EBP para medir el Bienestar Subjetivo, estos han sido aplicados a 40 alumnos/as que cursan primer c...

  11. Bienestar subjetivo en el ámbito rural

    OpenAIRE

    Santamaría Nicolás, Patricia

    2015-01-01

    El presente estudio se centra en el concepto de bienestar psicológico subjetivo, componente cualitativo de la calidad de vida y, por lo tanto, de especial relevancia en la intervención socioeducativa. El objetivo principal ha sido la valoración del bienestar subjetivo de la población en el medio rural. Se ha desarrollado en Matallana de Torio, un municipio de León de 1397 habitantes, participando en el mismo 318 personas adultas entre 18 y 86 años. Se analizó la literatura existente p...

  12. El Bienestar Subjetivo: Hacia una Psicología Positiva

    OpenAIRE

    Haydu00E9e Cuadra L.; Ramu00F3n Florenzano U.

    2003-01-01

    Este artículo revisa un área emergente de la psicología que, frente al énfasis en estados negativos, ha dado una nueva mirada centrada en las cualidades humanas positivas, identificando así factores que contribuyen al bienestar subjetivo (BS). La importancia de la subjetividad en la propia evaluación de la vida y el reconocimiento de que el bienestar incluye elementos más allá de la juventud y la prosperidad económica ha llevado a estudiar que factores psicológicos y ...

  13. La informalidad en la economía, algo cuestionable

    OpenAIRE

    Luis Guillermo Gómez Naranjo

    2007-01-01

    Partiendo de la dificultad que se tiene hoy en términos de la teoría económica, para apropiarse acerca de una conceptualización clara de lo que se entiende por economía informal, surge el contraste de una realidad incuestionable que muestra un fenómeno presente en forma local, regional, nacional e internacional, que toma el carácter de algo cotidiano en la vida económica y social de todos los países: la llamada economía informal. Esteartículo deja ver cómo aún sin una definición concreta de e...

  14. Bienestar psicológico subjetivo y personas mayores residentes

    Directory of Open Access Journals (Sweden)

    Ana Concepción Flecha García

    2014-12-01

    Full Text Available La mejora del bienestar psicológico subjetivo y, con él, la calidad de vida de las personas mayores residentes es el propósito esencial de este trabajo. Los teóricos destacan la importancia que desempeña el bienestar subjetivo sobre la calidad de vida y su interés en la experiencia de envejecer. Concebimos la calidad de vida como un concepto multidimensional que engloba componentes objetivos y subjetivos referidos al bienestar físico y psico-social de las personas, y su evaluación incluye la percepción subjetiva que tiene el sujeto de estas dimensiones. Entendemos el bienestar psicológico subjetivo, como la valoración positiva, afectiva y cognitiva, de bienestar y satisfacción con la vida entendida como “estar y sentirse bien en el presente” y, “estar y sentirse bien con el propio recorrido vital”.El principal objetivo del estudio es conocer las necesidades de los residentes relacionadas con los componentes específicos del bienestar y satisfacción vital que la investigación revela mas asociados a las personas mayores –vínculos personales, vida activa, reminiscencia y recuerdos felices, optimismo-, y la satisfacción vital; conocer la conexión entre estas dimensiones e identificar posibles factores relacionados con las mismas, completan el fin de este trabajo.Se plantea un modelo metodológico que permite recoger el sentimiento y opinión de las personas mayores desde su propia experiencia de bienestar y satisfacción vital. El enfoque y su carácter interpretativo favorecen la comprensión e interpretación de la información tal y como es percibida por los participantes que viven y se relacionan en un determinado contexto social. Se elige para tal fin la orientación , realizando el posterior. Se recoge la información mediante una entrevista semiestructurada elaborada en base a los fines propuestos. La muestra se compone de 66 personas seleccionas en

  15. Indoor Tanning and Problem Behavior

    Science.gov (United States)

    Bagdasarov, Zhanna; Banerjee, Smita; Greene, Kathryn; Campo, Shelly

    2008-01-01

    Objective: The authors examined factors predicting college students' use of tanning beds. Participants and Methods: Undergraduate students (N = 745) at a large Northeastern university participated in the study by answering a survey measuring tanning behavior and other psychosocial variables, including sensation seeking, self-esteem, tanning image…

  16. Demansda Tanı

    OpenAIRE

    AYGÜN, D.; CENGİZ, N.; KILIÇ, F.

    2010-01-01

    The Diagnosis of Dementia Dementia is charecterized by progressive intellectual deterioration. Differential diagnosis of dementia is important. Metabolic and structural causes must be examined. In the diagnosis of dementia a detailed history and clinical examination are needed. Then laboratory tests must be performed. In this study the diagnosis of dementia is discussed with the previous literature. Kognitif alanlarda foksiyonel bozulmayı ifade eden demansın ayırıcı tanısında, met...

  17. INNOVATIVE ORGANIC TANNING FOR LEATHER

    OpenAIRE

    Deselnicu, V.; M. Crudu; Ioannidis, I; D.C. Deselnicu

    2012-01-01

    Even the optimization of common chromium tannage, and combined tannage with chromium and other tanning materials have led to outstanding results related to the lowered pollution level in effluents and sludge, the problem has not been solved wholly. The single solution for this problem is finding out an environmentally friendly alternative to chromium tannage. This work also is within the above line, aiming to obtain wet-white leather by an organic tanning process.

  18. Vulnerabilidad psicológica al malestar subjetivo : Un estudio en población general

    OpenAIRE

    Grill, Silvia; Sánchez Gallo, María de la Paz; Castañeiras, Claudia Elena; Posada, María Cristina

    2009-01-01

    Numerosas investigaciones aportan evidencia sobre la existencia de características y estilos de personalidad que constituyen factores de riesgo de niveles elevados de ansiedad, depresión e ira, que pueden dar lugar a distintos grados de malestar subjetivo o de psicopatología (Berdichevsky Linares & González Ramella, 2005; Sivak, 2008). El malestar subjetivo hace referencia al grado de estrés percibido que una persona puede expresar en distintos niveles -cognitivo, emocional, conductual y rela...

  19. Calidad del Empleo desde los Enfoques del Bienestar Subjetivo y el Desarrollo Humano

    OpenAIRE

    Esteban Calvo; Pablo Gonzalez

    2014-01-01

    Este artículo utiliza los enfoques de bienestar subjetivo y desarrollo humano para contribuir al debate sobre calidad del empleo en Latinoamérica y criticar las evaluaciones exclusivamente centradas en la satisfacción laboral. Se define calidad del empleo como características relacionadas al trabajo que aumentan la libertad de las personas para alcanzar funcionamientos deseados como el bienestar subjetivo. Se propone evaluar la calidad del empleo incluyendo indicadores de satisfacción vital y...

  20. Diferencias transculturales en bienestar subjetivo: México y España

    Directory of Open Access Journals (Sweden)

    Mónica Carballeira

    2015-01-01

    Full Text Available El propósito de esta investigación ha consistido en analizar las diferencias en bienestar subjetivo en 346 estudiantes universitarios pertenecientes a dos culturas: colectivista (México e individualista (España. El bienestar subjetivo global se evaluó mediante la satisfacción vital, la felicidad, las emociones positivas y negativas; considerándose además, cuatro indicadores de satisfacción en dominios específicos: sentimental, estudios, salud y ocio. Los resultados indican que los estudiantes mexicanos puntúan más alto que los españoles en todos los indicadores de bienestar subjetivo. Los análisis de regresión múltiple revelan la importancia de la satisfacción sentimental y con los estudios en la felicidad y satisfacción vital de ambas culturas. Además, son importantes en la predicción del bienestar subjetivo global, la satisfacción con la salud para los mexicanos y la satisfacción con el ocio para los españoles. Los resultados apoyan el efecto diferencial de la cultura en el bienestar, fundamentalmente en su predicción a través de la satisfacción en ciertos dominios específicos.

  1. Harm minimization in tan seekers: an exploration of tanning behaviour and the potential for substitutional use of sunless tanning products.

    Science.gov (United States)

    Paul, Christine L; Paras, Lorraine; Harper, Ainsley; Coppa, Kay

    2011-09-01

    Exposure to ultraviolet (UV) light from the sun or solaria is a major contributor to high rates of skin cancer. The study aimed to explore the intentions of active tan seekers in relation to the substitutional use of sunless tanning products. Participants were reluctant to reduce UV exposure in favour of using sunless tanning products, which were considered to be another tanning method rather than an avenue for reducing skin cancer risk. The 'sunless tan' approach is unlikely to reduce UV exposure in the majority of tan seekers, but may be valuable in targeting women with fairer skin. PMID:21441364

  2. Indoor Tanning Is Not Safe

    Science.gov (United States)

    ... with the weather, latitude, altitude, and more. Statistics Studies have shown consistently that indoor tanning increases a person’s risk of getting skin cancer, including melanoma. A meta-analysis (a research study that looks at data from other studies) by ...

  3. Tan and thin? Associations between attitudes toward thinness, motives to tan and tanning behaviors in adolescent girls.

    Science.gov (United States)

    Darlow, Susan D; Heckman, Carolyn J; Munshi, Teja

    2016-07-01

    Tanning during adolescence increases skin cancer risk. Relatively few studies have examined the association between thinness attitudes and tanning attitudes and behaviors. The purpose of the current study was to examine psychosocial predictors of sunbathing and tanning bed use, specifically thin ideal internalization (TII) and motives for tanning among high school girls. Adolescent girls (N = 229) completed a 10-minute questionnaire designed to assess sunbathing and indoor tanning, TII and motives to tan (appearance, social and well-being). Hierarchical regression analyses showed that TII, β = .05, p motives, β = .11, p motives, β = .11, p motives were negatively associated with sunbathing, β = -.07, p motives on indoor tanning, in that appearance and well-being motives interacted to increase indoor tanning levels, especially among those who strongly endorsed social motives for tanning, β = .22, p Motives for tanning, specifically those associated with appearance and well-being, can interact to increase tanning bed use. When designing tailored interventions for skin cancer prevention in young people, researchers should consider tailoring based on motivation. Researchers and healthcare professionals who work with adolescents should attend to tanners who are motivated for both appearance and mood-related reasons, as they may be most at risk for tanning dependence and skin cancer. PMID:26448364

  4. [Algo-bacterial communities of the Kulunda steppe (Altai region, Russia) soda lakes].

    Science.gov (United States)

    Samylina, O S; Sapozhnikov, F V; Gaĭnanova, O Iu; Riabova, A V; Nikitin, M A; Sorokin, D Iu

    2015-01-01

    The composition and macroscopic structure of the floating oxygenic phototrophic communities from Kulunda steppe soda lakes (Petukhovskoe sodovoe, Tanatara VI, and Gorchiny 3) was described based on the data of the 2011 and 2012 expeditions (Winogradsky Institute of Microbiology). The algo-bacterial community with a green alga Ctenocladus circinnatus as an edificator was the typical one. Filamentous Geitlerinema sp. and Nodosilinea sp. were the dominant cyanobacteria. Apart from C. circinnatus, the algological component of the community contained unicellular green algae Dunaliella viridis and cf. Chlorella minutissima, as well as diatoms (Anomeoneis sphaerophora, Brchysira brebissonii, Brachysira zellensis, Mastogloia pusilla var. subcapitata, Nitzschia amphibia, Nitzschia communis, and Nitzschia sp.1). The latter have not been previously identified in the lakes under study. In all lakes, a considerable increase in salinity was found to result in changes in the composition and macroscopic structure of algo-bacterial communities. PMID:25916153

  5. Ultraviolet radiation, sun and tanning salons

    CERN Document Server

    1999-01-01

    The pamphlet gives some information about ultraviolet radiation (UV), UV-sources and health effects, tanning in artificial and natural sun. It also includes some sun protection advice. It is intended mainly for persons inspecting artificial tanning units and for the owners of tanning salons. (Author)

  6. AJUSTE PSICOSOCIAL, BIENESTAR SUBJETIVO Y OCIO EN ADULTOS MAYORES JUBILADOS MEXICANOS

    Directory of Open Access Journals (Sweden)

    Christian Oswaldo Acosta Quiroz

    2015-01-01

    Full Text Available El objetivo de este estudio fue establecer la relación entre ajuste psicosocial en la jubilación,bienestar subjetivo, actividades de ocio y variables sociodemográficas en adultos mayores ju-bilados mexicanos. Participaron 181 adultos mayores con una edad media de 69.12 años y untiempo medio de jubilación de 11.21 años. Los resultados indican que el ajuste psicosocial enla jubilación y el bienestar subjetivo se relacionan significativamente entre sí y con las variablessociodemográficas de sexo, nivel de estudios, estatus de salud y estado civil. A su vez, se re-lacionan con la frecuencia de actividades de ocio (con diferencias entre hombres y mujeres.Estas variables deben tenerse en cuenta para fomentar un mayor ajuste psicosocial y bienestarsubjetivo en adultos mayores jubilados.

  7. Evolución y negación del derecho subjetivo

    Directory of Open Access Journals (Sweden)

    Jorge Agudo González

    2011-06-01

    Full Text Available El debate sobre la naturaleza jurídica de la categoría del derecho subjetivo ha centrado la atención de grandes juristas. La polémica en torno a esta cuestión resulta en todo caso lógica, pues nos referimos a una categoría jurídica fundamental en la “arquitectura” dogmático-jurídica. Esta controversia alcanzaría una de sus más importantes manifestaciones con el gran jurista francés León Duguit, quien dedicó una parte primordial de su obra jurídica a contestar a las tesis clásicas, negando desde la teoría jurídico-sociológica, la existencia misma de los derechos subjetivos.

  8. CORRELATOS ENTRE BIENESTAR SUBJETIVO Y REGULACIÓN EMOCIONAL DEL ENOJO: DIFERENCIAS POR SEXO

    OpenAIRE

    Magali Martínez Pérez; Rozzana Sánchez Aragón

    2014-01-01

    Las experiencias emocionales negativas se asocian con el bienestar subjetivo, pero se ignora si la manera de regularlas se relaciona con los reportes de bienestar. El presente estudio exploró la asociación entre el bienestar percibido y ciertas variables culturales (premisas histórico-socio-culturales) e individuales (automonitoreo, estrategias y autoeficacia) involucradas en la regulación del en ojo, así como las posibles diferencias sexuales. Participaron 220 residentes que respondieron vol...

  9. Artificial tanning and suntan salons.

    Science.gov (United States)

    Watson, A B

    1982-05-15

    Many individuals will seek artificial skin-tanning methods despite recognition of their hazards. The long-wave ultraviolet light (UVA) sources provide a deeper tan and are potentially safer than the short-wave (UVB) sources for most people, hence the use of UVB should be confined to therapeutic purposes. However, there should be adequate warning that UVA is not harmless and, like UVB, will not tan some people's skin effectively. At this moment, there are insufficient data to predict what will be the long-term effect of selective use of UVA both on skin and on eyes. The dosage for a given exposure time will vary from one UVA apparatus to the next and cannot be assessed on the basis of redness, as is with UVB. This is a particularly serious potential hazard for people who purchase UVA units for private use. Adequate eye protection should be mandatory, until proved otherwise. Rigid safety standards are needed for the operation of UVA solaria. PMID:7099071

  10. Toward quantifying the abuse liability of ultraviolet tanning: A behavioral economic approach to tanning addiction.

    Science.gov (United States)

    Reed, Derek D; Kaplan, Brent A; Becirevic, Amel; Roma, Peter G; Hursh, Steven R

    2016-07-01

    Many adults engage in ultraviolet indoor tanning despite evidence of its association with skin cancer. The constellation of behaviors associated with ultraviolet indoor tanning is analogous to that in other behavioral addictions. Despite a growing literature on ultraviolet indoor tanning as an addiction, there remains no consensus on how to identify ultraviolet indoor tanning addictive tendencies. The purpose of the present study was to translate a behavioral economic task more commonly used in substance abuse to quantify the "abuse liability" of ultraviolet indoor tanning, establish construct validity, and determine convergent validity with the most commonly used diagnostic tools for ultraviolet indoor tanning addiction (i.e., mCAGE and mDSM-IV-TR). We conducted a between-groups study using a novel hypothetical Tanning Purchase Task to quantify intensity and elasticity of ultraviolet indoor tanning demand and permit statistical comparisons with the mCAGE and mDSM-IV-TR. Results suggest that behavioral economic demand is related to ultraviolet indoor tanning addiction status and adequately discriminates between potential addicted individuals from nonaddicted individuals. Moreover, we provide evidence that the Tanning Purchase Task renders behavioral economic indicators that are relevant to public health research. The present findings are limited to two ultraviolet indoor tanning addiction tools and a relatively small sample of high-risk ultraviolet indoor tanning users; however, these pilot data demonstrate the potential for behavioral economic assessment tools as diagnostic and research aids in ultraviolet indoor tanning addiction studies. PMID:27400670

  11. Adolescent tanning, disordered eating, and risk taking.

    Science.gov (United States)

    Schwebel, David C

    2014-04-01

    Indoor tanning and eating disorder behaviors are both significant adolescent public health risks. Recent results by Amrock and Weitzman provocatively suggest a link between the two, perhaps because of a shared cause of dysfunctional cognition about body image. This commentary discusses a possible model to explain the association between indoor tanning and eating disorder behaviors among teenagers. It also presents various strategies to prevent the negative outcomes, with a focus on preventing adolescent tanning behavior. Prevention strategies worth consideration include counseling by pediatricians or other health professionals, improved parental supervision and monitoring, and policy change to prohibit adolescent use of tanning facilities. PMID:24695120

  12. [Skin tanning and light protection-theory, agents and analytic aspects. 1. Skin tanning and skin tanning agents].

    Science.gov (United States)

    Matissek, R

    1984-10-01

    The different approaches to achieving skin tanning with emphasis on natural tanning, due to UV radiation of the sun or solaria, and artificial tanning through tannings agents are described. In contrast to the artificial tan the natural tan is a protection against UV radiation and is caused by pigmentation (melanin formation). The artificial tanning is based on a chemical reaction usually by means of dihydroxy acetone (melanoidin formation). Reaction mechanisms by both agents are reported. The determination of dihydroxy acetone in cosmetic tanning preparations by TLC, GC, HPLC, enzymatic tests and by a new method for capillary GC including sample preparation is described. When exceeding the natural protection mechanisms the skin should be protected by physico-chemical measures. The active principles in sunscreens are the UV filtering substances. UV filters permitted in the EG are listed. 2-Hydroxy benzophenone is used as an example to explain the mechanism of UV filtering substances. Analysis of UV filtering substances in cosmetic sunscreens by TLC, GC, HPLC is described as well as a fast and simple method for separation of lipophilic UV filters followed by capillary GC determination. PMID:6506884

  13. Tanning and beauty: Mother and teenage daughters in discussion.

    Science.gov (United States)

    Hay, Jennifer L; Geller, Alan C; Schoenhammer, Maria; Gordon, Mallorie; Bishop, Marilyn; Shuk, Elyse; Oliveria, Susan; Halpern, Allan C

    2016-07-01

    Tanning increases dramatically through the teenage years, but the family context of this health risk behavior is relatively unstudied. We conducted videotaped conversations between teenage girls (10th and 11th grade) and their mothers. We developed a coding system for discussion content and highlight findings including inadequate knowledge concerning the harms of tanning and positive views of outdoor tanning over indoor tanning, yet agreement that all tans are attractive. Many teens believed that indoor tanning is sometimes necessary to achieve the tanned look. These findings can usefully guide intervention development regarding the harms of all tanning, rather than indoor or outdoor tanning specifically. PMID:25318997

  14. El papel del optimismo y del apoyo social en el bienestar subjetivo

    OpenAIRE

    Rosario J. Marrero Quevedo; Mónica Carballeira Abella

    2010-01-01

    Introducción Identificar los factores que inciden en el bienestar de los individuos ha sido uno de los aspectos psicológicos más estudiados en los últimos años. El bienestar subjetivo se ha definido como la tendencia global a experimentar la vida de modo placentero. Esta valoración que hace el individuo tiene dos componentes: el cognitivo, evaluado por medio de la satisfacción vital, y el afectivo, que se basa en la presencia de emociones positivas y emociones negativas. La investigación prev...

  15. 7 CFR 29.3066 - Tan color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Tan color. 29.3066 Section 29.3066 Agriculture Regulations of the Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing... Tan color. A light red-yellow....

  16. Powdered hide model for vegetable tanning

    Science.gov (United States)

    Powdered hide samples for this initial study of vegetable tanning were prepared from hides that were dehaired by a typical sulfide or oxidative process, and carried through the delime/bate step of a tanning process. In this study, we report on interactions of the vegetable tannin, quebracho with th...

  17. Indoor tanning promotions on social media in six US cities #UVTanning #tanning.

    Science.gov (United States)

    Ricklefs, Christine A; Asdigian, Nancy L; Kalra, Heidi L; Mayer, Joni A; Dellavalle, Robert P; Holman, Dawn M; Crane, Lori A

    2016-06-01

    There is no research investigating indoor tanning advertising on social media. We assessed the use of social media to promote indoor tanning. We subscribed to social media platforms in six US cities and content-analyzed promotional messages received. We captured 662 messages on Twitter and Facebook, through salon emails, and in daily deal coupons. Salon postings were most frequent on Twitter and Facebook, with an average of 2-3 postings per week. National chains posted more frequently than local businesses. Forty percent of messages were devoid of tanning content and included photos, jokes, or popular references. Thirty percent mentioned price reductions, and 28 % referenced an upcoming holiday. Sunless tanning (17 %) was promoted more often than ultraviolet tanning (9 %). Tanning salons actively use social media as a strategy for maintaining relationships with customers and offer pricing deals that promote loyalty and high-frequency tanning. PMID:27356996

  18. LA SUBJETIVIDAD EN EL ENFOQUE DEL DESARROLLO: CALIDAD DE VIDA, BIENESTAR SUBJETIVO Y CAPACIDADES

    Directory of Open Access Journals (Sweden)

    José Sandoval Díaz

    2014-01-01

    Full Text Available En las últimas décadas la calidad de vida (CV y las valoraciones subjetivas del bienestar están adquiriendo protagonismo como indicadores de desarrollo. La incorporación teórica de estos elementos han sido canalizados en dos modelos: por un lado el mode lo de la psicología positiva con el concepto de bienestar subjetivo (BS, el que lo considera como elemento necesario y suficiente para dar cuenta del desarrollo, y por otro, el enfoque de capacidades, en la línea que ha venido trabajando el PNUD y su Índice de Desarrollo Humano. En este trabajo se exponen los argumentos esgrimidos por ambos modelos y se discute el papel que juegan dentro del estudio del desarrollo. Como principal conclusión, si bien se plantea la ventaja teórica y práctica del enfoque de las capacidades por sobre el modelo de bienestar subjetivo, sin embargo, se considera pertinente complementar el estudio del desarrollo humano con la dimensión subjetiva.

  19. CORRELATOS ENTRE BIENESTAR SUBJETIVO Y REGULACIÓN EMOCIONAL DEL ENOJO: DIFERENCIAS POR SEXO

    Directory of Open Access Journals (Sweden)

    Magali Martínez Pérez

    2014-01-01

    Full Text Available Las experiencias emocionales negativas se asocian con el bienestar subjetivo, pero se ignora si la manera de regularlas se relaciona con los reportes de bienestar. El presente estudio exploró la asociación entre el bienestar percibido y ciertas variables culturales (premisas histórico-socio-culturales e individuales (automonitoreo, estrategias y autoeficacia involucradas en la regulación del en ojo, así como las posibles diferencias sexuales. Participaron 220 residentes que respondieron voluntariamente una batería de pruebas. Se encontró que las creencias culturales y el uso de estrategias que disminuyen la intensidad del enojo se asocian positivamente con el bienestar con amigos y trabajo, y que hay más similitudes que diferencias entre hombres y mujeres en las variables evaluadas. Los hallazgos señalan la importancia de regular apropiadamente emociones negativas como el enojo, a fin de incrementar el bienestar subjetivo de hombres y mujeres.

  20. Are tanning beds “safe”? Human studies of melanoma

    OpenAIRE

    Berwick, Marianne

    2008-01-01

    Controversy continues over the carcinogenic properties of tanning beds. The tanning industry “sells” tanning beds as a safe alternative to UV exposure for both tanning as well as vitamin D biosynthesis. But, how safe are tanning beds? Epidemiologic data – incomplete and unsatisfactory – suggests that tanning beds are not safer than solar ultraviolet radiation and that they may have independent effects from solar exposure that increase risk for melanoma.

  1. Phenomenology and psychopathology of excessive indoor tanning.

    Science.gov (United States)

    Petit, Aymeric; Karila, Laurent; Chalmin, Florence; Lejoyeux, Michel

    2014-06-01

    Excessive indoor tanning, defined by the presence of an impulse towards and repetition of tanning that leads to personal distress, has only recently been recognized as a psychiatric disorder. This finding is based on the observations of many dermatologists who report the presence of addictive relationships with tanning salons among their patients despite being given diagnoses of malignant melanoma. This article synthesizes the existing literature on excessive indoor tanning and addiction to investigate possible associations. This review focuses on the prevalence, clinical features, etiology, and treatment of this disorder. A literature review was conducted, using PubMed, Google Scholar, EMBASE and PsycINFO, to identify articles published in English from 1974 to 2013. Excessive indoor tanning may be related to addiction, obsessive-compulsive disorder, impulse control disorder, seasonal affective disorder, anorexia, body dysmorphic disorder, or depression. Excessive indoor tanning can be included in the spectrum of addictive behavior because it has clinical characteristics in common with those of classic addictive disorders. It is frequently associated with anxiety, eating disorders, and tobacco dependence. Further controlled studies are required, especially in clinical psychopathology and neurobiology, to improve our understanding of excessive indoor tanning. PMID:24601904

  2. Diminishing Chromium Use on Combined Chromium-Gambier Tanning Process Upon the Characteristics of Tanned Leather

    Directory of Open Access Journals (Sweden)

    A. Kasim

    2014-04-01

    Full Text Available The research was aimed to investigate the influence of minimizing chromium use on combined chromium-gambier process upon the characteristics of tanned leather. At the first stage of tanning process, chromium was used and in the second stage it was replaced by gambier. The raw material used was dried saline-preserved goat skin. The treatments applied on the tanning process were the different concentrations of chromium ranging from the highest level of 6% to the lowest level of 1% which was then re-tanned by using 8% concentration of gambier. The examination parameters included chemical and physical properties as well as visual investigation on the tanned leather in accordance with SNI-06-0463-1989-A. The result showed that the tanning process by using 2% chromium in the first step and 8% gambier in the second step was a treatment combination producing tanned leather that met the standard. The examination on tanned leather resulted from such treatment showed 56.33% rawhide, 17.45% of bound tannin, 31.22% of tanning level, tensile strength 386.30 kg/cm2, flexibility 31.91%, leather width 1.3 mm, density 0.75 g/cm3, the leather was quite elastic with light brownish color. In conclusion, minimizing the use of chromium in the combined tanning process of chromium and gambier can be implemented to the lowest of 2% chromium concentration and 8% gambier in the first and second step, respectively.

  3. O bem-estar subjetivo na adolescência: contributo das variáveis sociodemográficas e psicológicas

    OpenAIRE

    Assunção, Cristina Maria Amaro de

    2014-01-01

    O presente trabalho propõe elucidar as relações entre o bem-estar subjetivo e variáveis sociodemográficas, nomeadamente de género, e as variáveis de personalidade, incluindo a este, a ansiedade, a auto-estima e suporte social percebido. A personalidade representa uma força preditiva bastante significativa no bem-estar subjetivo e portanto pretende-se avaliar se as restantes variáveis incluídas no estudo, são igualmente preditoras do bem-estar subjetivo e/ou acrescentam valor...

  4. Solar wind tans young asteroids

    Science.gov (United States)

    2009-04-01

    A new study published in Nature this week reveals that asteroid surfaces age and redden much faster than previously thought -- in less than a million years, the blink of an eye for an asteroid. This study has finally confirmed that the solar wind is the most likely cause of very rapid space weathering in asteroids. This fundamental result will help astronomers relate the appearance of an asteroid to its actual history and identify any after effects of a catastrophic impact with another asteroid. ESO PR Photo 16a/09 Young Asteroids Look Old "Asteroids seem to get a ‘sun tan' very quickly," says lead author Pierre Vernazza. "But not, as for people, from an overdose of the Sun's ultraviolet radiation, but from the effects of its powerful wind." It has long been known that asteroid surfaces alter in appearance with time -- the observed asteroids are much redder than the interior of meteorites found on Earth [1] -- but the actual processes of this "space weathering" and the timescales involved were controversial. Thanks to observations of different families of asteroids [2] using ESO's New Technology Telescope at La Silla and the Very Large Telescope at Paranal, as well as telescopes in Spain and Hawaii, Vernazza's team have now solved the puzzle. When two asteroids collide, they create a family of fragments with "fresh" surfaces. The astronomers found that these newly exposed surfaces are quickly altered and change colour in less than a million years -- a very short time compared to the age of the Solar System. "The charged, fast moving particles in the solar wind damage the asteroid's surface at an amazing rate [3]", says Vernazza. Unlike human skin, which is damaged and aged by repeated overexposure to sunlight, it is, perhaps rather surprisingly, the first moments of exposure (on the timescale considered) -- the first million years -- that causes most of the aging in asteroids. By studying different families of asteroids, the team has also shown that an asteroid

  5. "Prioritizing positivity: An effective approach to pursuing happiness?": Correction to Catalino, Algoe, & Fredrickson (2014).

    Science.gov (United States)

    2016-04-01

    Reports an error in "Prioritizing positivity: An effective approach to pursuing happiness" by Lahnna I. Catalino, Sara B. Algoe and Barbara L. Fredrickson (Emotion, 2014[Dec], Vol 14[6], 1155-1161). In the article, there was an error in the first paragraph of the Materials subsection, "Prioritizing positivity." from the Method section. The first paragraph, the 11th line should have read, "Because four of the items were negatively skewed, the items were transformed by squaring them (Kline, 1998)." (The following abstract of the original article appeared in record 2014-48826-003.) [Correction Notice: An Erratum for this article was reported in Vol 15(2) of Emotion (see record 2015-12998-001). There was an error in Table 2 of the Results. There was a negative sign added to .51 in Table 2. The corrected table is shown in the erratum.] A decade of research reveals the benefits of positive emotions for mental and physical health; however, recent empirical work suggests the explicit pursuit of happiness may backfire. The present study hypothesized that the pursuit of happiness is not inherently self-defeating; in particular, individuals who seek positivity, as exemplified by how they make decisions about how to organize their day-to-day lives, may be happier. This individual difference is labeled prioritizing positivity. In a community sample of young to older adults (N = 233), prioritizing positivity predicted a host of well-being outcomes (positive emotions, depressive symptomology). In addition, people high in prioritizing positivity have greater resources, and these links are explained by more frequent experiences of positive emotions. In sum, the present study suggests that seeking happiness, although a delicate art, may be a worthwhile pursuit. (PsycINFO Database Record PMID:27010431

  6. EL BIENESTAR SUBJETIVO ANTE LAS BUENAS PRÁCTICAS EDUCATIVAS CON TIC: SU INFLUENCIA EN PROFESORADO INNOVADOR

    OpenAIRE

    Jesús Valverde Berrocoso; María Rosa Fernández Sánchez; Francisco Ignacio Revuelta Domínguez

    2013-01-01

    El objetivo de este estudio, que forma parte de una investigación más amplia sobre la innovación educativa y la integración de las Tecnologías de la Información y la Comunicación (TIC) en el aula [1], es conocer el grado de «bienestar subjetivo» autopercibido por profesorado innovador y asociado a su realización de «buenas prácticas educativas con TIC». El bienestar subjetivo es un concepto que se extrae de las percepciones de las personas sobre su existencia o su visión subjetiva de su exper...

  7. Lupus cerebritis after visiting a tanning salon.

    Science.gov (United States)

    Geara, Abdallah S; Torbey, Estelle; El-imad, Badiaa

    2009-01-01

    A 53-year-old female was admitted to the intensive care unit for lupus cerebritis; she had a 15-year history of stable lupus. Over the prior 1 to 2 months, the patient visited a tanning salon and this triggered the exacerbation of lupus. Her initial symptoms were cutaneous in the form of an erythematous rash. Within 2 weeks she started to have headaches and was admitted for seizure and psychosis. Ultraviolet A exposure in the tanning salon is known to exacerbate lupus by modulation of the immune system at the level of the skin. It has also been found that ultraviolet light can lead to the formation of antinuclear antibodies. This case illustrates the need to emphasize the danger of the tanning salon to patients with systemic lupus erythematous; the risk is not only cutaneous, it can also be systemic. PMID:20001946

  8. Efectos diferenciales del bienestar subjetivo, autorrealización y celos en las fases del amor pasional

    OpenAIRE

    Rozzana Sánchez Aragón

    2009-01-01

    El presente estudio exploró en 348 hombres y mujeres de dos ciudades de la República Mexicana las diferencias en la autorrealización, el bienestar subjetivo y los celos en las cuatro fases del amor pasional: atracción, enamoramiento, amor obsesivo y amor desesperado. Los resultados indican los efectos diferenciales por sexo, ciudad de procedencia y etapas de la pasión en dichas áreas.

  9. Efectos diferenciales del bienestar subjetivo, autorrealización y celos en las fases del amor pasional

    Directory of Open Access Journals (Sweden)

    Rozzana Sánchez Aragón

    2009-01-01

    Full Text Available El presente estudio exploró en 348 hombres y mujeres de dos ciudades de la República Mexicana las diferencias en la autorrealización, el bienestar subjetivo y los celos en las cuatro fases del amor pasional: atracción, enamoramiento, amor obsesivo y amor desesperado. Los resultados indican los efectos diferenciales por sexo, ciudad de procedencia y etapas de la pasión en dichas áreas.

  10. Applicative chemistry of tanning metallic heterocomplexes

    CERN Document Server

    Gaidau, Carmen

    2013-01-01

    The chemistry of heterocomplex compounds is a fascinating field for experts in chemical synthesis and structural analysis, and for technologists specializing in leather processing. This volume describes the vast theoretical and practical possibilities of exploiting the action synergism of metals with different collagen cross-linking capacity. The possibility of reducing chromium content from leather tanning agents by replacing it with other tanning metals has significant environmental implications and minimum changes in terms of quality and production costs of natural leather, and is a viable

  11. Aspectos subjetivos implicados en la demanda de consulta médica frecuente

    Directory of Open Access Journals (Sweden)

    Catalina Echeverri Gallo

    2012-01-01

    Full Text Available Este artículo contiene los resultados de una investigación realizada con el fin de acercarse a la comprensión de los aspectos subjetivos implicados en el pedido de consulta médica de consultantes frecuentes. Se utilizó un diseño cualitativo, la metodología fue el estudio de casos y la técnica de recolección de información fue la entrevista semiestructurada a profundidad. La muestra correspondió a nueve consultantes frecuentes de una institución de salud de Medellín. Los resultados sugieren que existe una búsqueda de alivio y control en la consulta médica por parte de los consultantes frecuentes, motivada por el sufrimiento que manifiestan y padecen. Aspectos como el vínculo con el médico, la demanda del paciente y las representaciones sociales que construyen son determinantes para la percepción de control y alivio de este sufrimiento y el inicio y mantenimiento de la consulta frecuente en salud.

  12. Bienestar Subjetivo y Calidad de Vida en la Infancia en Chile

    Directory of Open Access Journals (Sweden)

    Juan Carlos Oyanedel

    2015-02-01

    Full Text Available El artículo presenta los resultados de la Encuesta Internacional sobre Bienestar Subjetivo infantil (ISCWeB, aplicada en Chile en el año 2012. El cuestionario fue aplicado a una muestra de 2.734 niños y niñas, de 8, 10 y 12 años, residentes de las tres principales zonas urbanas del país. Los resultados dan cuenta de una alta satisfacción con la vida, existiendo diferencias al considerar las variables nivel socioeconómico y sexo, así como también distintos aspectos. Los ámbitos mejor evaluados corresponden a la familia, bienes materiales, y salud; en detrimento de aspectos como el barrio y el colegio. Asimismo, se observa que el conocimiento y percepción de que se respetan los derechos de los niños y niñas, disminuye con la edad. Las conclusiones enfatizan la necesidad de profundizar en el estudio de esta temática.

  13. Ban on Indoor Tanning by Minors Not Working: Study

    Science.gov (United States)

    ... page: https://medlineplus.gov/news/fullstory_160182.html Ban on Indoor Tanning by Minors Not Working: Study Tanning salon use showed little change after 2013 ban, and rose among N.J. high school boys ...

  14. PHYSICAL-CHEMICAL CHARACTERISATION OF OXAZOLIDINE-TANNED LEATHER

    OpenAIRE

    V. Segarra; Martínez, M A; Roig, M; Ferrer, J.

    2012-01-01

    Nowadays chrome tanning is the most widely used technique for leather production, accounting for more than 90% of leather tanned worldwide. This process gives leather excellent physical properties but maypose an impact on the environment. At present, the leather industry is looking for chrome-free tanning processes, more environmentally friendly.The Centre for Technology and Innovation (INESCOP) is researching into the feasibility of oxazolidine tanning in the framework of the project titled ...

  15. Violência, culpa e ato: causas e efeitos subjetivos em adolescentes

    Directory of Open Access Journals (Sweden)

    Henrique Figueiredo Carneiro

    2010-12-01

    Full Text Available Este trabalho apresenta um relato de pesquisa realizada sobre a violência e o adolescente, evidenciando o objetivo, as causas e os efeitos subjetivos que desencadeiam a violência na atualidade. Apresenta também uma investigação qualitativa com referencial teórico-conceitual da psicanálise, em destaque os conceitos de mal-estar, lei, anomia, limites, laços sociais, necessidade, desejo, culpa, passagem ao ato, individualismo, discurso capitalista, amor, vida e morte. Foram utilizados fotografias e fragmentos de filmes apresentados aos adolescentes inseridos no projeto Pró-jovem, desenvolvido na cidade de Maracanaú, Ceará, Brasil. As análises confirmaram os pressupostos da pesquisa de que a violência guarda relação direta com a ineficácia dos discursos normativos, que a culpa não comparece em consequência dos atos desfechados contra o próximo e que o sujeito não se guia por uma referência mítica do representante da lei.(* Colaboradores da pesquisa: doutora Marta Gerez Ambertín (Universidad de Santiago del Estero - Argentina; mestra em Psicologia Márcia Batista dos Santos (Universidade de Fortaleza - Brasil; alunos de Mestrado em Psicologia: Thiago Costa Matos Carneiro da Cunha (Labio, Rossana Vaz Borja (Labio, Carla Renata Braga de Souza (Labio/Leipcs, Lisieux D’Jesus Luzia de Araújo Rocha (Labio/Otium - Universidade de Fortaleza - Brasil; graduado em Psicologia Marcus Vinicius Ximenes Rocha (Universidade de Fortaleza – Brasil; bolsista de I. C. CNPq: Ricardo Pinheiro Maia Júnior; bolsista de I. C. Funcap: Rayana Silva Lima (Universidade de Fortaleza. Projeto apoiado pelo CNPq por meio de Bolsa de Produtividade em Pesquisa concedida ao Prof. Dr. Henrique Figueiredo Carneiro.

  16. Trabajo informal: motivos, bienestar subjetivo, salud, y felicidad en vendedores ambulantes Trabalho informal: motivos, bem-estar subjetivo, saúde e felicidade de vendedores ambulantes Informal work: motives, well being, health and happiness in street vendors

    OpenAIRE

    Emilio Moyano Díaz; Ramón Castillo Guevara; José Lizana Lizana

    2008-01-01

    Las relaciones entre trabajo, bienestar subjetivo (B.S.), felicidad y salud son complejas y de alto interés teórico y empírico. Ellas son analizadas aquí en trabajadores informales de comercio ambulante. Mediante observación y fotografías en las cinco ciudades más pobladas de la región del Maule (Chile), se registra 1556 puestos de venta de los que aleatoriamente se selecciona 258 para encuestar. Resultados: presentan una satisfacción vital global moderada, estando menos satisfechos con sus a...

  17. Biodegradation of leather tanned with inorganic salts

    OpenAIRE

    Bacardit Dalmases, Anna; Jorba, Montse; Font Vallès, Joaquim; Shendrik, Alexander; Ollé Otero, Lluís

    2011-01-01

    This paper aims to evaluate the physical, chemical and biological processes associated with the deterioration of leather tanned with inorganic salts. The samples of leather were exposed during eight months to outdoor weathering, and then their properties were evaluated. The results indicate that biodegration starts with dehydration, a partial scission of the protein chain of the collagen, detanning and a loss of oils due to volatilization and/or decomposition.

  18. Bibliotecas Digitales: algo viejo, algo nuevo y algo prestado

    Directory of Open Access Journals (Sweden)

    Paz Chanes, Claudia

    2001-11-01

    Full Text Available ‘Bibliotecas digitales’ … ¿estamos hablando de una novela de Isaac Asimov o Ursula LeGuin? ¿Aludimos a alguna escena futurista de una película de ciencia ficción? ¿Entrevemos instrumentos utópicos salidos de una imaginación vanguardista?. No. Las bibliotecas digitales ya han llegado y están entre nosotros. Casi sin darnos cuenta y sin mucho tiempo para reflexionar sobre ellas, se han instalado en nuestro entorno de una manera impensable hace unas décadas; un entorno que se va perfeccionando con el tiempo, de un modo que a veces nos hace preguntarnos cómo se estudiaba e investigaba antes de su llegada.

  19. Ultrasound assisted chrome tanning: Towards a clean leather production technology.

    Science.gov (United States)

    Mengistie, Embialle; Smets, Ilse; Van Gerven, Tom

    2016-09-01

    Nowadays, there is a growing demand for a cleaner, but still effective alternative for production processes like in the leather industry. Ultrasound (US) assisted processing of leather might be promising in this sense. In the present paper, the use of US in the conventional chrome tanning process has been studied at different pH, temperature, tanning time, chrome dose and US exposure time by exposing the skin before tanning and during tanning operation. Both prior exposure of the skin to US and US during tanning improves the chrome uptake and reduces the shrinkage significantly. Prior exposure of the skin to US increase the chrome uptake by 13.8% or reduces the chrome dose from 8% to 5% (% based on skin weight) and shorten the process time by half while US during tanning increases the chrome uptake by 28.5% or reduces the chrome dose from 8% to 4% (half) and the tanning time to one third compared to the control without US. Concomitantly, the resulting leather quality (measured as skin shrinkage) improved from 5.2% to 3.2% shrinkage in the skin exposed to US prior tanning and to 1.3% in the skin exposed to US during the tanning experiment. This study confirms that US chrome tanning is an effective and eco-friendly tanning process which can produce a better quality leather product in a shorter process time with a lower chromium dose. PMID:27150762

  20. Bienestar subjetivo e imagen corporal en estudiantes universitarias de Arequipa/ Subjective wellbeing and body image in college students in Arequipa

    Directory of Open Access Journals (Sweden)

    Andrea Prieto Vela

    2015-12-01

    Full Text Available RESUMEN Este estudio exploró la correlación entre el bienestar subjetivo y la imagen corporal de las estudiantes mujeres en una universidad de Arequipa. La muestra estuvo constituida de 155 estudiantes mujeres entre los 17 y 24 años de las tres carreras profesionales. Las participantes fueron evaluadas en sus respectivos salones. La validación del Cuestionario de la Imagen Corporal (BSQ fue calculada con Alfa de Cronbach y se obtuvo un valor de 0.92. Los resultados indicaron que existe una correlación negativa significativa entre el bienestar subjetivo y la imagen corporal (r = -0.478; p 0.05 y a la imagen corporal (t = -0.606; p > 0.05. Esto muestra que la distorsión de la imagen corporal tiene un impacto negativo en el bienestar subjetivo de las estudiantes universitarias mujeres. ABSTRACT This study explored the correlation between subjective wellbeing and body image of female students at a university in Arequipa. The sample consisted by 155 female students between 17 and 24 years old from the three professional careers. The participants were evaluated in their respective classrooms. The validation of the Body Shape Questionnaire (BSQ was calculated using Cronbach’s alpha and obtained a value of 0.92. The results indicated that there is significant negative correlation between the subjective wellbeing and body image (r = -0.478; p 0.05 and body image (t = -0.606; p > 0.05. This shows that the distortion of body image has a negative impact on the subjective wellbeing of women university students.

  1. Relación entre identidad, conducta virtual, bienestar subjetivo y rupturas afectivas en jóvenes universitarios

    OpenAIRE

    Portillo Guerra, Carlos Javier

    2014-01-01

    El auge de las redes sociales ha permitido que se conviertan en lugares importantes de elaboración de la identidad dada la facilidad para la autoapertura y validación social de roles personales, asociándose esto a una percepción de mayor bienestar subjetivo. Aunque hay literatura importante sobre la elaboración de la identidad en redes sociales, existe poca información sobre elaboración de crisis de identidad en el ambiente virtual, particularmente, la generada por una ruptura afectiva. La pr...

  2. Pollution and energy management in tanning industry

    International Nuclear Information System (INIS)

    Tanning industry uses a number of chemicals such as Common Salt, Lime (Calcium Hydroxide), Sodium Sulfide and Basic Chromium Sulfate etc. During process, only a part of the chemical is consumed and the rest ends up in the effluent as pollutant. This paper deals with the techniques, locally developed or published in literature to recycle these chemicals and also discusses some energy saving techniques which can be used in tanning industry. Basic Chromium Sulfate (BCS) is one of the expensive chemicals used in 'Chrome Tanning'. By precipitating d filtering basic chromium sulfate, the recovery is nearly complete and the effluent obtained contains less than 1ppm Chromium. Dried raw hides contain up to 15% sodium chloride (w/w) and this can be removed in solid form by using mechanical brushes and can be re-used. The recovered salt contains foreign matter as impurities. After dissolution in water, the salt solution is filtered through cartridge filters and can be used in pickle bath. Liming slurry containing sodium sulfide is wasted as it contains fleshing and hair etc. A self cleaning 'J' type screen has no moving parts and removes fleshing and hair from the lime suspension. 'Counter Current Washing Technique,' reduces the wash water quantity by a factor of five to six. Air born pollution generated during buffing and dyeing can be captured by properly designed air filters. The solvents released in atmosphere during dyeing and finishing can be recovered by absorption. Fat, gelatin and protein can be recovered from waste fleshing. In tanning industry, drying of hides is the major consumer of thermal energy. Hot air can be produced by steam, hot water or solar energy. Advantages and disadvantages of these options are discussed. Wastage of thermal energy in dryers can be reduced by improving the existing designs. Hot water for tanning purposes can be generated by recovering waste heat present in the boiler flue gases. Boiler efficiency can also be improved by cycling heat

  3. Volcanic geomorphology using TanDEM-X

    Science.gov (United States)

    Poland, Michael; Kubanek, Julia

    2016-04-01

    Topography is perhaps the most fundamental dataset for any volcano, yet is surprisingly difficult to collect, especially during the course of an eruption. For example, photogrammetry and lidar are time-intensive and often expensive, and they cannot be employed when the surface is obscured by clouds. Ground-based surveys can operate in poor weather but have poor spatial resolution and may expose personnel to hazardous conditions. Repeat passes of synthetic aperture radar (SAR) data provide excellent spatial resolution, but topography in areas of surface change (from vegetation swaying in the wind to physical changes in the landscape) between radar passes cannot be imaged. The German Space Agency's TanDEM-X satellite system, however, solves this issue by simultaneously acquiring SAR data of the surface using a pair of orbiting satellites, thereby removing temporal change as a complicating factor in SAR-based topographic mapping. TanDEM-X measurements have demonstrated exceptional value in mapping the topography of volcanic environments in as-yet limited applications. The data provide excellent resolution (down to ~3-m pixel size) and are useful for updating topographic data at volcanoes where surface change has occurred since the most recent topographic dataset was collected. Such data can be used for applications ranging from correcting radar interferograms for topography, to modeling flow pathways in support of hazards mitigation. The most valuable contributions, however, relate to calculating volume changes related to eruptive activity. For example, limited datasets have provided critical measurements of lava dome growth and collapse at volcanoes including Merapi (Indonesia), Colima (Mexico), and Soufriere Hills (Montserrat), and of basaltic lava flow emplacement at Tolbachik (Kamchatka), Etna (Italy), and Kīlauea (Hawai`i). With topographic data spanning an eruption, it is possible to calculate eruption rates - information that might not otherwise be available

  4. Estudio de los trastornos subjetivos del lenguaje y comunicación en usuarios de una asociación de personas con enfermedad mental

    OpenAIRE

    Cano Alonso, Alba Guiomar

    2014-01-01

    Introducción: Las enfermedades mentales son unos trastornos que presentan una prevalencia muy elevada en todo el mundo y son numerosos los que autores manifiestan la relación de estas patologías con el lenguaje y la comunicación. Para el estudio de los trastornos subjetivos del lenguaje no existen un elevado número de estudios previos ni pruebas para evaluarlo. Objetivo: Se pretende establecer la presencia e intensidad de los trastornos subjetivos del lenguaje en los trastornos mentales grave...

  5. O bem-estar subjetivo na adolescência: contributo das variáveis sociodemográficas, personalidade e espiritualidade

    OpenAIRE

    Azevedo, Maria João Sá de

    2013-01-01

    O presente estudo tem como objetivo esclarecer as relações que o bem-estar subjetivo, as variáveis sociodemográficas, as variáveis de personalidade/autoestima e as variáveis de espiritualidade estabelecem entre si. Mais especificamente, pretende-se avaliar se as variáveis de espiritualidade são melhores preditoras do bem-estar subjetivo do que as variáveis sociodemográficas e de personalidade/autoestima. Para tal, recorreu-se a uma amostra de 488 adolescentes, tendo sido aplicada uma bateria ...

  6. Validación de constructo de un instrumento para evaluar el valor social subjetivo de la educación en la comunidad educativa

    OpenAIRE

    Sancho-Álvarez, Carlos

    2013-01-01

    La educación posee un valor social evidente que puede presentarse a través de diferentes indicadores de evaluación. La percepción que la sociedad pueda construirse acerca de ese Valor Social de la Educación (VSE), además de la que tenga la comunidad educativa en sí misma (alumnado, profesorado y familias), se aproxima a la idea de constructo de Valor Social Subjetivo de la Educación (VSE-Subjetivo). En este sentido, se ha realizado una revisión a nivel internacional de diferentes cuestionario...

  7. Bem-Estar Subjetivo e Burnout em Cadetes Militares: O Papel Mediador da Autoeficácia

    Directory of Open Access Journals (Sweden)

    Luciane Albuquerque Sá Souza

    2015-12-01

    Full Text Available ResumoEste trabalho tem por objetivo testar a hipótese de que a autoeficácia atua como mediador entre o bem-estar subjetivo e o burnout. Participaram 228 cadetes, com idade média de 24 anos (DP = 0,85, sendo 148 policiais e 80 bombeiros. As análises de regressão demonstram que as variáveis do bem-estar subjetivo, principalmente a vitalidade subjetiva e os afetos negativos, predizem significativamente o burnout e suas subdimensões. As análises de mediação feitas provêm evidências empíricas satisfatórias para o papel mediador desempenhado pela autoeficácia. Esses resultados poderão apoiar o planejamento de intervenções que visem o fortalecimento da autoeficácia em cadetes. A academia deve fornecer aos cadetes não apenas as técnicas e conhecimentos imprescindíveis para a atuação profissional, mas também proporcionar o desenvolvimento de mecanismos de autorregulação que possibilitem um senso maior de autoeficácia, além de condições educacionais e laborais adequadas.

  8. Molecular spectroscopic study for suggested mechanism of chrome tanned leather

    Science.gov (United States)

    Nashy, Elshahat H. A.; Osman, Osama; Mahmoud, Abdel Aziz; Ibrahim, Medhat

    2012-03-01

    Collagen represents the structural protein of the extracellular matrix, which gives strength of hides and/or skin under tanning process. Chrome tan is the most important tanning agent all over the world. The methods for production of leather evolved over several centuries as art and engineering with little understanding of the underlying science. The present work is devoted to suggest the most probable mechanistic action of chrome tan on hide proteins. First the affect of Cr upon hide protein is indicated by the studied mechanical properties. Then the spectroscopic characterization of the hide protein as well as chrome tanned leather was carried out with Horizontal Attenuated Total Reflection (HATR) FT-IR. The obtained results indicate how the chromium can attached with the active sites of collagen. Molecular modeling confirms that chromium can react with amino as well as carboxylate groups. Four schemes were obtained to describe the possible interactions of chrome tan with hide proteins.

  9. Reaction of the nitroxyl radical TAN with glutathione

    International Nuclear Information System (INIS)

    Evidence for a stoichiometric reaction between 2,2,6,6-tetramethyl-4-piperidone-N-oxyl (TAN) and glutathione (GSH) in vitro has been provided by the results of e.s.r., spectrophotometric and enzymatic measurements. The addition of TAN to a suspension of isolated hepatocytes resulted in a rapid reduction in cellular GSH. Possible mechanisms are discussed. The results are in accordance with the rapid in vivo degradation of TAN. (U.K.)

  10. Modeling of TAN in recirculating aquaculture systems by AQUASIM

    DEFF Research Database (Denmark)

    Arvin, Erik; Pedersen, Lars-Flemming

    2011-01-01

    Modeling of total ammonium nitrogen (TAN) in recirculating aquaculture systems (RAS) contribute to identifying and quantifying the most important processes and their relative contribution to removal of TAN. AQUASIM is a flexible modular simulation system for water quality in natural and technical...... systems developed by EAWAG (Reichert, 1994). AQUASIM allows simulating complex biological, chemical and physical processes in standardized hydraulic systems. We used AQUASIM to model the steady state TAN concentrations in 12 experimental recirculating aquaculture systems (RAS) operated by DTU AQUA in...

  11. Base nacional curricular comum: a falsa oposição entre conhecimento para fazer algo e conhecimento em si

    Directory of Open Access Journals (Sweden)

    Elizabeth Macedo

    2016-06-01

    Full Text Available RESUMO: Assumindo uma visão da política como processo de signifiXação a partir da teoria do discurso de Ernesto Laclau e Chantal Mouffe, foco o atual debate sobre bases nacionais curriculares comuns no Brasil. Sendo o antagonismo social inerradicável, defendo que o terreno político é sempre marcado por articulações entre uma pluralidade de demandas. Utilizo a experiência da Austrália como ponto de partida para destacar duas ideias que se antagonizam nas discussões sobre base curricular comum no Brasil, quais sejam: conhecimento para fazer algo e conhecimento em si. Após analisar a oposição entre elas, argumento que a disputa naturaliza o sentido de currículo como controle, ideia que tento deslocar entendendo educação, justiça e democracia como porvir.

  12. EL BIENESTAR SUBJETIVO ANTE LAS BUENAS PRÁCTICAS EDUCATIVAS CON TIC: SU INFLUENCIA EN PROFESORADO INNOVADOR

    Directory of Open Access Journals (Sweden)

    Jesús Valverde Berrocoso

    2013-01-01

    Full Text Available El objetivo de este estudio, que forma parte de una investigación más amplia sobre la innovación educativa y la integración de las Tecnologías de la Información y la Comunicación (TIC en el aula [1], es conocer el grado de «bienestar subjetivo» autopercibido por profesorado innovador y asociado a su realización de «buenas prácticas educativas con TIC». El bienestar subjetivo es un concepto que se extrae de las percepciones de las personas sobre su existencia o su visión subjetiva de su experiencia vital y profesional. En una muestra de profesorado innovador (N=41 de centros educativos seleccionados por sus «buenas prácticas con TIC», se aplicó un cuestionario para medir qué motivaciones, emociones y competencias están presentes en una práctica innovadora con tecnologías, así como el grado de satisfacción personal y profesional logrado tras la aplicación de estas buenas prácticas. Los resultados revelan las motivaciones que mueven al profesorado a implicarse en actividades docentes innovadoras, las percepciones de satisfacción y las emociones en las que se fundamenta su grado de bienestar subjetivo vinculado con las buenas prácticas educativas con TIC. Las motivaciones que impulsan la innovación o las buenas prácticas educativas con TIC son de carácter práctico (mejora del trabajo docente y mayor interés del alumnado, ético (deber y responsabilidad de uso por parte del profesorado y personal (superación de retos para lograr una mayor competencia digital. El profesorado manifiesta mayoritariamente emociones positivas relacionadas con el uso educativo de las TIC (orgullo, satisfacción, autoestima, autoconfianza y felicidad, autopercepción de logro de metas profesionales y una mayor eficacia en su actividad docente. El profesorado percibe que sus buenas prácticas inciden en la actitud positiva de sus compañeros hacias las innovaciones con TIC, el apoyo del equipo directivo hacia estos proyectos y a una mayor

  13. Felicidade, bem-estar subjetivo e comportamento acadêmico de estudantes universitários Felicidad, bienestar subjetivo y comportamiento académico de estudiantes universitarios Happiness, subjective well-being and the academic behavior of university students

    OpenAIRE

    José Augusto Dela Coleta; Marilia Ferreira Dela Coleta

    2006-01-01

    Este estudo teve como objetivo determinar índices de felicidade e bem-estar e sua relação com o comportamento acadêmico, em uma amostra de 252 estudantes universitários dos últimos períodos de diversos cursos e diferentes instituições de educação superior. Os sujeitos foram solicitados a responder a um questionário composto de perguntas sobre dados biográficos e escalas sobre o sentimento de felicidade, satisfação e bem-estar subjetivo, avaliações de vários aspectos de suas vidas, de sua univ...

  14. Felicidade, bem-estar subjetivo e comportamento acadêmico de estudantes universitários Felicidad, bienestar subjetivo y comportamiento académico de estudiantes universitarios Happiness, subjective well-being and the academic behavior of university students

    Directory of Open Access Journals (Sweden)

    José Augusto Dela Coleta

    2006-12-01

    Full Text Available Este estudo teve como objetivo determinar índices de felicidade e bem-estar e sua relação com o comportamento acadêmico, em uma amostra de 252 estudantes universitários dos últimos períodos de diversos cursos e diferentes instituições de educação superior. Os sujeitos foram solicitados a responder a um questionário composto de perguntas sobre dados biográficos e escalas sobre o sentimento de felicidade, satisfação e bem-estar subjetivo, avaliações de vários aspectos de suas vidas, de sua universidade, de sua formação e comportamento acadêmico. Os resultados mostraram que estes estudantes avaliam sua satisfação, bem-estar e felicidade de modo bastante positivo. De modo geral eles estão satisfeitos com a faculdade e com o próprio rendimento acadêmico, embora se preocupem um pouco com a garantia de sucesso profissional que a formação recebida lhes possa oferecer. A principal hipótese foi confirmada ao se encontrar coeficiente de correlação múltipla significativo entre as medidas de bem-estar subjetivo e o comportamento acadêmico-universitário.Este estudio tuvo como objetivo determinar índices de felicidad y bienestar y su relación con el comportamiento académico, en una muestra de 252 estudiantes universitarios en los últimos períodos de diversos cursos y diferentes instituciones de educación superior. Los sujetos fueron solicitados a responder a un cuestionario compuesto de preguntas sobre datos biográficos y escalas sobre el sentimiento de felicidad, satisfacción y bienestar subjetivo, evaluaciones de varios aspectos de sus vidas, de su universidad, de su formación y comportamiento académico. Los resultados mostraron que estos estudiantes evalúan su satisfacción, bienestar y felicidad de modo bastante positivo. De modo general ellos están satisfechos con la facultad y con el propio rendimiento académico, aunque se preocupen un poco con la garantía de éxito profesional que la formación recibida

  15. El bienestar subjetivo como enfoque e instrumento de la política pública: una revisión analítica de la literatura

    Directory of Open Access Journals (Sweden)

    Castellanos-Cereceda, Roberto

    2012-05-01

    Full Text Available ¿Qué utilidad tiene el enfoque de bienestar subjetivo para el estudio, análisis y hechura de la política pública? En este trabajo argumento que la utilidad se aprecia en varios aspectos. El enfoque de bienestar subjetivo ofrece nuevas formas de poner a prueba supuestos básicos del análisis económico y social sobre el comportamiento humano; ofrece herramientas de análisis que dan una perspectiva diferente y complementaria a mediciones y enfoques tradicionales sobre los aspectos que más importan a la población en su proceso de desarrollo; ofrece un conjunto de reflexiones importantes sobre las implicaciones del estudio de la felicidad y la satisfacción para diferentes tipos de políticas públicas y en distintos ámbitos de la acción gubernamental. Estos aspectos se analizan a partir de un rastreo histórico sobre los orígenes de la “ciencia del bienestar subjetivo o de la felicidad” y de una revisión de la literatura para identificar temas abordados, herramientas desarrolladas y políticas públicas implicadas en el estudio sobre el bienestar subjetivo en décadas recientes. Una de las ideas centrales de este trabajo es que más que elevar los niveles de felicidad y satisfacción de las personas, en sí mismo importante, se trata de encontrar formas de reducir la brecha entre los objetivos de desarrollo que tiene la política pública, por un lado, y el bienestar subjetivo de la población, por el otro, a partir de una mejor comprensión de las preferencias y comportamientos de los individuos y lo que afecta la satisfacción de las personas con su vida.

  16. Part of the osseous SPECT/CT in the radio clinical suspicion of foot algo-dystrophy among adults. Bi centric study of cohort of 50 patients

    International Nuclear Information System (INIS)

    SPECT / CT does not provide diagnostic yield compared to planar images in the diagnosis of foot algo-dystrophy. This mode plays by cons a major role in the differential diagnosis (i.e. within 90% of patients) with an accuracy and inter readers agreement significantly higher than in planar imaging and SPECT alone. (N.C.)

  17. Dynamics of Drying in Phenolically Tanned Materials

    Institute of Scientific and Technical Information of China (English)

    Julian F. V. Vincent

    2004-01-01

    The cuticle of a maggot goes through a mechanical transition when it dries, increasing in stiffness by about an order of magnitude (e. g. from 0.5 GPa to 5 GPa) as the water content drops from about 1 g/g (weight of water per unit dry weight) to 0.4 g/g. Thus stiffness represents the loss of freezable water and is more or less diagnostic of a material stabilized by hydrogen bonds. Further loss in water results in a smaller increase in stiffness. In natural systems the water content is controlled by the addition of phenolic residues, resulting in tanning or sclerotisation, which drives the matrix components towards co-operative interaction and makes the material permanently waterproof.

  18. 76 FR 46677 - Indoor Tanning Services; Cosmetic Services Excise Taxes

    Science.gov (United States)

    2011-08-03

    ... Internal Revenue Service 26 CFR Parts 40 and 49 RIN 1545-BJ40 Indoor Tanning Services; Cosmetic Services Excise Taxes AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice of public hearing on... providing guidance on the indoor tanning services excise tax imposed by the Patient Protection...

  19. 75 FR 33740 - Indoor Tanning Services; Cosmetic Services; Excise Taxes

    Science.gov (United States)

    2010-06-15

    ... Internal Revenue Service 26 CFR Parts 40 and 49 RIN 1545-BJ40 Indoor Tanning Services; Cosmetic Services; Excise Taxes AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice of proposed rulemaking by... tanning services excise tax imposed by the Patient Protection and Affordable Care Act. These...

  20. Definition of $\\tan\\beta$ beyond tree-level

    OpenAIRE

    Yamada, Youichi

    1996-01-01

    We study the relation between different renormalization schemes for the parameter $\\tan\\beta$ in the Minimal Supersymmetric Standard Model. The contributions of the third-generation quark-squark loops to the differences between $\\tan\\beta$'s in several schemes are discussed. Their numerical differences are typically within several %.

  1. PS2-26: Development of Interventions to Reduce Adolescent Use of Indoor Tanning: The Talking Tanning and Teens Study

    OpenAIRE

    Rolnick, Cheri J; Jackson, Jody; Lazovich, DeAnn; Choi, Kelvin; Southwell, Brian; Forster, Jean

    2010-01-01

    Background: Use of indoor tanning devices has been associated with a range of adverse effects including burns, corneal damage, premature wrinkling, as well as melanoma and non-melanoma skin cancers. Indoor tanning is a common behavior among females and many begin use during adolescence. Interventions that target teens and parents to decrease use are lacking.

  2. ASSOCIATIONS BETWEEN SEASONAL SLEEP CHANGE AND INDOOR TANNING1,2

    OpenAIRE

    CULNAN, ELIZABETH; Kloss, Jacqueline D.; Darlow, Susan; Heckman, Carolyn J.

    2015-01-01

    Identification of risk factors for indoor tanning may ultimately aid the development of better indoor tanning prevention strategies, which is pertinent given the association between indoor tanning and skin cancer. This study aimed to examine the relationship between seasonal sleep change and indoor tanning. Women tanners (N= 139) completed self-report measures including items relating to seasonal sleep changes, seasonal affective disorder (SAD), reasons for tanning, tanning during the winter ...

  3. Research Status of Chrome-free Tanning%铬鞣剂的研究现状

    Institute of Scientific and Technical Information of China (English)

    陶亮亮; 李鹏; 侯宏波; 李宁宁; 陈磊; 李琛

    2011-01-01

    介绍了无铬金属鞣剂、植物鞣剂、改性戊二醛鞣剂、嗯唑烷鞣剂、有机膦鞣剂、纳米鞣剂等无铬鞣剂的研究现状和应用前景。%The chrome-free tanning agents, such as inorganic compounds tanning agent, vegetable tanning agent, modified glutaraldehyde tanning agent, oxzaolidine tanning agent, organic phosphonium tanning agents and nano-tanning agents, were introduced in this paper. And, the current research and application prospect of chrome-free tanning agent were discussed.

  4. Trabajo informal: motivos, bienestar subjetivo, salud, y felicidad en vendedores ambulantes Trabalho informal: motivos, bem-estar subjetivo, saúde e felicidade de vendedores ambulantes Informal work: motives, well being, health and happiness in street vendors

    Directory of Open Access Journals (Sweden)

    Emilio Moyano Díaz

    2008-12-01

    Full Text Available Las relaciones entre trabajo, bienestar subjetivo (B.S., felicidad y salud son complejas y de alto interés teórico y empírico. Ellas son analizadas aquí en trabajadores informales de comercio ambulante. Mediante observación y fotografías en las cinco ciudades más pobladas de la región del Maule (Chile, se registra 1556 puestos de venta de los que aleatoriamente se selecciona 258 para encuestar. Resultados: presentan una satisfacción vital global moderada, estando menos satisfechos con sus amigos y ocio, que con su trabajo y su familia. Su mayor felicidad proviene de ésta (χ2Friedman=389,47; gl=3; pAs relações entre trabalho, bem-estar subjetivo (B.S., felicidade e saúde são complexas e de alto interesse teórico e empírico. Elas são analisadas aqui em trabalhadores informais do comércio ambulante. Mediante observação e fotografias nas cinco cidades mais populosas da região do Maule (Chile, registram-se 1556 postos de venda. Foram selecionados aleatoriamente 258 para interrogar. Resultados: os trabalhadores informais apresentam uma satisfação vital global moderada, estando menos satisfeitos com seus amigos e tempo de lazer do que com seu trabalho e sua família. Sua maior felicidade provém desta (χ2Friedman=389,47; gl=3; pRelationships among work, subjective well being (SWB, happiness and health are complex and have a high theoretical and empirical relevance. In this study, these relationships are analyzed in street vendors. Using observation and photographs in the five bigger cities Maule Region (Chile, 1556 sale points were found and 258 of them were randomly selected for this study. Results: vendors have a moderated life satisfaction, with lower satisfaction levels about their friends and leisure than about their work and family. The highest report of happiness comes from their family (χ2Friedman=389,47; gl=3; p<0,001. They report being sick M= 6 days per month, although they only miss work one day per month. Their

  5. Vietnamese President Truong Tan Sang Meets Chinese Friends

    Institute of Scientific and Technical Information of China (English)

    Xu; Yiyi

    2013-01-01

    <正>The visiting Vietnamese President Truong Tan Sang had a cordial meeting with Chinese personages friendly to Vietnam in the Vietnamese Embassy in China on June 20.The meeting was jointly arranged by

  6. Sunlamps and Sunlamp Products (Tanning Beds/Booths)

    Science.gov (United States)

    ... Radiation-Emitting Products and Procedures Home, Business, and Entertainment Products Sunlamps and Sunlamp Products (Tanning Beds/Booths) Share ... PDF - 71KB) [ARCHIVED] More in Home, Business, and Entertainment Products Cell Phones Health Issues Reducing Exposure: Hands-free ...

  7. Tanning May Limit Skin's Ability to Produce Vitamin D

    Science.gov (United States)

    ... html Tanning May Limit Skin's Ability to Produce Vitamin D: Study Even those with significant sun exposure can have low levels of this essential vitamin, research shows To use the sharing features on ...

  8. Tannin Fingerprinting in Vegetable Tanned Leather by Solid State NMR Spectroscopy and Comparison with Leathers Tanned by Other Processes

    Directory of Open Access Journals (Sweden)

    Jan H. van der Westhuizen

    2011-01-01

    Full Text Available Solid state 13C-NMR spectra of pure tannin powders from four different sources – mimosa, quebracho, chestnut and tara – are readily distinguishable from each other, both in pure commercial powder form, and in leather which they have been used to tan.  Groups of signals indicative of the source, and type (condensed vs. hydrolyzable of tannin used in the manufacture are well resolved in the spectra of the finished leathers.  These fingerprints are compared with those arising from leathers tanned with other common tanning agents.  Paramagnetic chromium (III tanning causes widespread but selective disappearance of signals from the spectrum of leather collagen, including resonances from acidic aspartyl and glutamyl residues, likely bound to Cr (III structures. Aluminium (III and glutaraldehyde tanning both cause considerable leather collagen signal sharpening suggesting some increase in molecular structural ordering. The 27Al-NMR signal from the former material is consistent with an octahedral coordination by oxygen ligands. Solid state NMR thus provides easily recognisable reagent specific spectral fingerprints of the products of vegetable and some other common tanning processes. Because spectra are related to molecular properties, NMR is potentially a powerful tool in leather process enhancement and quality or provenance assurance.

  9. Tannin fingerprinting in vegetable tanned leather by solid state NMR spectroscopy and comparison with leathers tanned by other processes.

    Science.gov (United States)

    Romer, Frederik H; Underwood, Andrew P; Senekal, Nadine D; Bonnet, Susan L; Duer, Melinda J; Reid, David G; van der Westhuizen, Jan H

    2011-01-01

    Solid state ¹³C-NMR spectra of pure tannin powders from four different sources--mimosa, quebracho, chestnut and tara--are readily distinguishable from each other, both in pure commercial powder form, and in leather which they have been used to tan. Groups of signals indicative of the source, and type (condensed vs. hydrolyzable) of tannin used in the manufacture are well resolved in the spectra of the finished leathers. These fingerprints are compared with those arising from leathers tanned with other common tanning agents. Paramagnetic chromium (III) tanning causes widespread but selective disappearance of signals from the spectrum of leather collagen, including resonances from acidic aspartyl and glutamyl residues, likely bound to Cr (III) structures. Aluminium (III) and glutaraldehyde tanning both cause considerable leather collagen signal sharpening suggesting some increase in molecular structural ordering. The ²⁷Al-NMR signal from the former material is consistent with an octahedral coordination by oxygen ligands. Solid state NMR thus provides easily recognisable reagent specific spectral fingerprints of the products of vegetable and some other common tanning processes. Because spectra are related to molecular properties, NMR is potentially a powerful tool in leather process enhancement and quality or provenance assurance. PMID:21278677

  10. Microstructural and weldability evaluation of 310TaN

    Energy Technology Data Exchange (ETDEWEB)

    Lundin, C.D.; Qiao, C.Y.P. [Univ. of Tennessee, Knoxville, TN (United States); Swindeman, R.W. [Oak Ridge National Lab., TN (United States)

    1996-08-01

    Excellent weldability and good microstructural stability of 310TaN, in terms of the formation and growth of secondary phases at elevated temperature, was revealed in this investigation. The interganular stress corrosion resistance of 310TaN is superior to modified 800H and 310HCbN evaluated previously due to the fact that TaC, TaN and Ta(C,N) particles are more stable compared to Nb-rich or Ti-rich carbides, nitrides and carbonitrides presented in the other advanced alloys. Using resistance spot welding technique for which extremely fast cooling is a characteristic, it was found that a very minor amount of gain boundary liquation takes place during welding thermal cycling. The limited grain boundary liquation is of the eutectic type i.e., a low tendency to weld HAZ hot cracking.

  11. Effective ultraviolet irradiance measurements from artificial tanning devices in Greece.

    Science.gov (United States)

    Petri, Aspasia; Karabetsos, Efthymios

    2015-12-01

    Artificial tanning remains very popular worldwide, despite the International Agency for Research on Cancer classification of ultraviolet (UV) radiation from sunbeds as 'carcinogenic to humans'. Greek Atomic Energy Commission has initiated a surveillance action of the artificial tanning devices in Greece in order to record the effective irradiance levels from the sunbeds and to inform and synchronise the domestic artificial tanning business sector with the requirements of the European Standard EN 60335-2-27:2010. In this direction, in situ measurements of UV emissions from sunbeds in solaria businesses all over Greece were performed from October 2013 until July 2014, with a radiometer and a portable single-monochromator spectrophotometer. Analysis of the measurements' results revealed that effective irradiance in ∼60 % of the measured sunbeds exceeded the 0.3 W m(-2) limit value set by EN 60335-2-27:2010 and only 20 % of the devices could be categorised as UV type 3. PMID:25468991

  12. Tanning lamps ultraviolet emissions and compliance with technical standards

    International Nuclear Information System (INIS)

    In this work the compliance of tanning lamps with technical standards EN 60335-2-27 'Household and similar electrical appliances-Safety. Part 2: Particular requirements for appliances for skin exposure to ultraviolet and infrared radiation' was analysed. Results of this analysis showed that none of the examined technical documentation produced by the lamps manufacturers is fully compliant with the standard technique. Furthermore data reported in the same manuals, such as effective radiant exposure or irradiance, would indicate that these sources may be the cause of undue exposure to ultraviolet (UV) radiation. For this reason a measurement campaign on UV lamps used in tanning salons was organised. The first results of these measurements seem to confirm the doubts raised from the analysis of the lamp manuals: the use of a tanning lamp can lead to UV radiation exposure levels higher than reference maximum values recommended by EN 60335-2-27. (authors)

  13. Indoor Tanning within UK Young Adults: An Extended Theory of Planned Behaviour Approach.

    Science.gov (United States)

    Dodd, Lorna J; Forshaw, Mark J; Williams, Stella

    2013-01-01

    The indoor tanning industry poses a long-term public health risk. Despite the adverse health effects, indoor tanning seems to be gaining considerable popularity. The study examined indoor tanning intentions and behaviour within UK young adults using an extended theory of planned behaviour model, which included variables on "appearance reasons to tan," "perceived susceptibility to damaging appearance," "perceived susceptibility to health consequences," and "tanning knowledge." The model was successful in predicting indoor tanning intentions and behaviour (explained 17% and 71%, resp.). An interesting outcome was the magnitude of the variable "appearance reasons to tan." A current tanned appearance therefore seemed to outweigh any adverse future appearance or health consequences caused by indoor tanning. Appearance-focused interventions to reduce such behaviour may now prove to be efficacious within a UK sample. PMID:24967136

  14. Valorization of titanium metal wastes as tanning agent used in leather industry.

    Science.gov (United States)

    Crudu, Marian; Deselnicu, Viorica; Deselnicu, Dana Corina; Albu, Luminita

    2014-10-01

    The development of new tanning agents and new technologies in the leather sector is required to cope with the increasingly higher environmental pressure on the current tanning materials and processes such as tanning with chromium salts. In this paper, the use of titanium wastes (cuttings) resulting from the process of obtaining highly pure titanium (ingots), for the synthesis of new tanning agent and tanning bovine hides with new tanning agent, as alternative to tanning with chromium salts are investigated. For this purpose, Ti waste and Ti-based tanning agent were characterized for metal content by inductively coupled plasma mass spectrometry (ICP-MS) and chemical analysis; the tanned leather (wet white leather) was characterized by Scanning Electron Microscope/Energy Dispersive Using X-ray (Analysis). SEM/EDX analysis for metal content; Differential scanning calorimetric (DSC), Micro-Hot-Table and standard shrinkage temperature showing a hydrothermal stability (ranged from 75.3 to 77°C) and chemical analysis showing the leather is tanned and can be processed through the subsequent mechanical operations (splitting, shaving). On the other hand, an analysis of major minor trace substances from Ti-end waste (especially vanadium content) in new tanning agent and wet white leather (not detected) and residue stream was performed and showed that leachability of vanadium is acceptable. The results obtained show that new tanning agent obtained from Ti end waste can be used for tanning bovine hides, as eco-friendly alternative for chrome tanning. PMID:24507977

  15. Funcionamiento sexual, satisfacción sexual y bienestar psicológico y subjetivo en una muestra de mujeres españolas

    OpenAIRE

    Carrobles, José Antonio; Gámez Guadix, Manuel; Almendros, Carmen

    2011-01-01

    El propósito de este estudio fue explorar la relación entre diversas variables relacionadas con el funcionamiento sexual, la satisfacción sexual y el bienestar psicológico y subjetivo de una muestra de mujeres españolas. Las participantes fueron 157 mujeres estudiantes universitarias que completaron una batería de cuestionarios sobre sexualidad. Para analizar la relación entre las variables objeto de estudio, se llevaron a cabo varios análisis de regresión lineal múltiple con la satisfacción ...

  16. Resumen de tesis. El estrés aculturativo y su efecto en el bienestar subjetivo: los procesos relacionales de intimidad y poder como mediadores.

    OpenAIRE

    Vicario Molina, Isabel

    2013-01-01

    [ES] Este estudio examina el papel mediador que los procesos relacionales de intimidad y poder pueden tener en el efecto del estrés aculturativo sobre el bienestar subjetivo de una muestra de 120 parejas de inmigrantes procedentes de Latinoamérica. Los participantes respondieron a un cuestionario anónimo que evaluaba diferentes variables sociodemográficas, experiencias de estrés aculturativo, intimidad, estrategias positivas y negativas de negociación del conflicto, control sobre la toma de d...

  17. Assessment of Biodegradability of Synthetic Tanning Agents Used in Leather Tanning Process

    Directory of Open Access Journals (Sweden)

    Phaniendra.A

    2011-10-01

    Full Text Available The goal of this research was to assess the biodegradability of two synthetic tanning agents (syntans, Phenol condensation product and Nitrogen containing resin using Respirometry. The evaluation involved the analysis of oxygen uptake rate (OUR, profiles by respirometry. The study was conducted with different syntan concentrations of 50mg/L, 100mg/L, 150mg/L and 200mg/L. The oxygen uptake rate (OUR of mixed liquid is 60 mg/L h with 50mg/L phenol condensation product and is found to be higher than with the concentrations 100, 150 and 200 mg/L h. The percent chemical oxygen demand (%COD removal was decreased with increased syntan concentration indicating high rates ofbiodegradation at low concentration and toxicity impacts or low rates of biodegradation at higher concentrations. Whereas the Nitrogen Containing Resin showed complete inhibition on oxygen uptake rate of mixed liquor at all concentrations and very low % COD removals as well showing less biodegradability or potential toxic impact on the activated sludge.

  18. Prevalence and correlates of indoor tanning and sunless tanning product use among female teens in the United States

    OpenAIRE

    Megan Quinn; Arsham Alamian; Joel Hillhouse; Colleen Scott; Rob Turrisi; Katie Baker

    2015-01-01

    Background: Indoor tanning (IT) before the age of 35 increases melanoma risk by 75%. Nevertheless, IT and sunless tanning product (STP) use have gained popularity among youth. However, there are limited data on the prevalence and sociodemographic correlates of both IT and STP use in a representative sample of American teens. Methods: Teenage females (N = 778) aged 12–18 years were recruited as part of an on-going longitudinal study conducted between May 2011 and May 2013. Descriptive stati...

  19. Photobiological implications of melanin photoprotection after UVB-induced tanning of human skin but not UVA-induced tanning

    OpenAIRE

    Coelho, Sergio G.; Yin, Lanlan; Smuda, Christoph; Mahns, Andre; Kolbe, Ludger; Hearing, Vincent J.

    2015-01-01

    Repetitive suberythemal UVA and/or UVB exposures were used to generate comparable UV-induced tans in human skin over the course of 2 weeks. In order to evaluate the potential photoprotective values of those UVA- and/or UVB- induced tans and to avoid the confounding issue of residual UV-induced DNA damage, we waited 1 week before challenging those areas with a 1.5 MED dose of UVA+UVB after which we measure DNA damage. The results show that the type of UV used to induce skin pigmentation affect...

  20. Valorization of titanium metal wastes as tanning agent used in leather industry

    International Nuclear Information System (INIS)

    Highlights: • Valorization of titanium wastes which cannot be recycled in metallurgical industry. • Transferring Ti waste into raw materials for obtaining Ti based tanning agent. • Characterization of new Ti based tanning agents and leather tanned with them. • Characterization of sewage waste water and sludge resulted from leather manufacture. • Analysis of the impact of main metal component of Ti waste. - Abstract: The development of new tanning agents and new technologies in the leather sector is required to cope with the increasingly higher environmental pressure on the current tanning materials and processes such as tanning with chromium salts. In this paper, the use of titanium wastes (cuttings) resulting from the process of obtaining highly pure titanium (ingots), for the synthesis of new tanning agent and tanning bovine hides with new tanning agent, as alternative to tanning with chromium salts are investigated. For this purpose, Ti waste and Ti-based tanning agent were characterized for metal content by inductively coupled plasma mass spectrometry (ICP-MS) and chemical analysis; the tanned leather (wet white leather) was characterized by Scanning Electron Microscope/Energy Dispersive Using X-ray (Analysis). SEM/EDX analysis for metal content; Differential scanning calorimetric (DSC), Micro-Hot-Table and standard shrinkage temperature showing a hydrothermal stability (ranged from 75.3 to 77 °C) and chemical analysis showing the leather is tanned and can be processed through the subsequent mechanical operations (splitting, shaving). On the other hand, an analysis of major minor trace substances from Ti-end waste (especially vanadium content) in new tanning agent and wet white leather (not detected) and residue stream was performed and showed that leachability of vanadium is acceptable. The results obtained show that new tanning agent obtained from Ti end waste can be used for tanning bovine hides, as eco-friendly alternative for chrome tanning

  1. Valorization of titanium metal wastes as tanning agent used in leather industry

    Energy Technology Data Exchange (ETDEWEB)

    Crudu, Marian, E-mail: mariancrudu@yahoo.com [The National Research and Development Institute for Textiles and Leather – Division Leather and Footwear Research Institute, 93 Ion Minulescu Str., Bucharest (Romania); Deselnicu, Viorica, E-mail: viorica.deselnicu@icpi.ro [The National Research and Development Institute for Textiles and Leather – Division Leather and Footwear Research Institute, 93 Ion Minulescu Str., Bucharest (Romania); Deselnicu, Dana Corina, E-mail: d_deselnicu@yahoo.com [University Politehnica Bucharest, Splaiul Independentei Nr. 313, Sector 6, RO-060042 Bucharest (Romania); Albu, Luminita, E-mail: luminita.albu@gmail.com [The National Research and Development Institute for Textiles and Leather – Division Leather and Footwear Research Institute, 93 Ion Minulescu Str., Bucharest (Romania)

    2014-10-15

    Highlights: • Valorization of titanium wastes which cannot be recycled in metallurgical industry. • Transferring Ti waste into raw materials for obtaining Ti based tanning agent. • Characterization of new Ti based tanning agents and leather tanned with them. • Characterization of sewage waste water and sludge resulted from leather manufacture. • Analysis of the impact of main metal component of Ti waste. - Abstract: The development of new tanning agents and new technologies in the leather sector is required to cope with the increasingly higher environmental pressure on the current tanning materials and processes such as tanning with chromium salts. In this paper, the use of titanium wastes (cuttings) resulting from the process of obtaining highly pure titanium (ingots), for the synthesis of new tanning agent and tanning bovine hides with new tanning agent, as alternative to tanning with chromium salts are investigated. For this purpose, Ti waste and Ti-based tanning agent were characterized for metal content by inductively coupled plasma mass spectrometry (ICP-MS) and chemical analysis; the tanned leather (wet white leather) was characterized by Scanning Electron Microscope/Energy Dispersive Using X-ray (Analysis). SEM/EDX analysis for metal content; Differential scanning calorimetric (DSC), Micro-Hot-Table and standard shrinkage temperature showing a hydrothermal stability (ranged from 75.3 to 77 °C) and chemical analysis showing the leather is tanned and can be processed through the subsequent mechanical operations (splitting, shaving). On the other hand, an analysis of major minor trace substances from Ti-end waste (especially vanadium content) in new tanning agent and wet white leather (not detected) and residue stream was performed and showed that leachability of vanadium is acceptable. The results obtained show that new tanning agent obtained from Ti end waste can be used for tanning bovine hides, as eco-friendly alternative for chrome tanning.

  2. LEATHER TANNING AND FINISHING WASTE MANAGEMENT RESEARCH AND DEVELOPMENT PROGRAM

    Science.gov (United States)

    Reviewed herein is the waste management research and development program for the leather tanning and finishing industry. Emphasis is placed on the Environmental Protection Agency's (EPA) role, both past and present, and major developments over the past few years outside EPA, incl...

  3. Occupational cancers in leather tanning industries: A short review

    OpenAIRE

    Rastogi S; Kesavachandran C; Mahdi Farzana; Pandey Amit

    2007-01-01

    Work in leather tanning involves exposure to a wide range of chemicals. Some of these are carcinogens or suspected carcinogens. Increased risks for a number of cancers have been reported among the tannery workers. In the present review, a detailed account of lung cancer, testicular cancer, soft tissue sarcoma, pancreatic cancer, bladder cancer among tannery workers is mentioned.

  4. Action Memorandum for Decommissioning of TAN-607 Hot Shop Area

    Energy Technology Data Exchange (ETDEWEB)

    M. A. Pinzel

    2007-05-01

    The Department of Energy is documenting the selection of an alternative for the TAN-607 Hot Shop Area using a Comprehensive Environmental Response, Compensation, and Liability Act non-time-critical removal action (NTCRA). The scope of the removal action is limited to TAN-607 Hot Shop Area. An engineering evaluation/cost analysis (EE/CA) has assisted the Department of Energy Idaho Operations Office in identifuomg the most effective method for performing the decommissioning of this structure whose mission has ended. TAN-607 Hot Shop Area is located at Test Area North Technical Support Facility within the Idaho National Laboratory Site. The selected alternative consists of demolishing the TAN-607 aboveground structures and components, removing belowground noninert components (e.g. wood products), and removing the radiologically contaminated debris that does not meet remedial action objectives (RAOs), as defined in the Record of Decision Amendment for the V-Tanks and Explanation of Significant Differences for the PM-2A Tanks at Test Area North, Operable Unit 1-10.

  5. 75 FR 33683 - Indoor Tanning Services; Cosmetic Services; Excise Taxes

    Science.gov (United States)

    2010-06-15

    ... means a service employing any electronic product designed to incorporate one or more ultraviolet lamps... Internal Revenue Service 26 CFR Parts 40, 49, and 602 RIN 1545-BJ41 Indoor Tanning Services; Cosmetic Services; Excise Taxes AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Final and...

  6. 78 FR 34874 - Indoor Tanning Services; Excise Taxes

    Science.gov (United States)

    2013-06-11

    ... published in the Federal Register (TD 9486, 75 FR 33683; REG-112841-10, 75 FR 33740) (2010 regulations... indoor tanning services that are obtained by redemption of ``bonus points'' through a loyalty program or... redemption of benefits such as ``bonus points'' under a loyalty program or similar program or promotion...

  7. Occupational cancers in leather tanning industries: A short review

    Directory of Open Access Journals (Sweden)

    Rastogi S

    2007-01-01

    Full Text Available Work in leather tanning involves exposure to a wide range of chemicals. Some of these are carcinogens or suspected carcinogens. Increased risks for a number of cancers have been reported among the tannery workers. In the present review, a detailed account of lung cancer, testicular cancer, soft tissue sarcoma, pancreatic cancer, bladder cancer among tannery workers is mentioned.

  8. Powdered hide model for vegetable tanning II. hydrolyzable tannin

    Science.gov (United States)

    Vegetable tannages employ both condensed and hydrolyzable tannins. As part of our exploration of tanning mechanisms, we reported last year on interactions of the condensed tannin, quebracho, with powdered hide. In this study, the interactions of chestnut extract, a hydrolyzable tannin, with powdere...

  9. ALGOS: the development of a randomized controlled trial testing a case management algorithm designed to reduce suicide risk among suicide attempters

    Directory of Open Access Journals (Sweden)

    Duhem Stephane

    2011-01-01

    Full Text Available Abstract Background Suicide attempts (SA constitute a serious clinical problem. People who attempt suicide are at high risk of further repetition. However, no interventions have been shown to be effective in reducing repetition in this group of patients. Methods/Design Multicentre randomized controlled trial. We examine the effectiveness of «ALGOS algorithm»: an intervention based in a decisional tree of contact type which aims at reducing the incidence of repeated suicide attempt during 6 months. This algorithm of case management comprises the two strategies of intervention that showed a significant reduction in the number of SA repeaters: systematic telephone contact (ineffective in first-attempters and «Crisis card» (effective only in first-attempters. Participants who are lost from contact and those refusing healthcare, can then benefit from «short letters» or «postcards». Discussion ALGOS algorithm is easily reproducible and inexpensive intervention that will supply the guidelines for assessment and management of a population sometimes in difficulties with healthcare compliance. Furthermore, it will target some of these subgroups of patients by providing specific interventions for optimizing the benefits of case management strategy. Trial Registration The study was registered with the ClinicalTrials.gov Registry; number: NCT01123174.

  10. Construcción de un cuestionario para la valoración de los efectos subjetivos de sustancias con potencial de abuso (vesspa): evaluación del éxtasis.

    OpenAIRE

    Camí Morell, Jordi; Farré Albaladejo, Magí

    2003-01-01

    Se construye y valida un instrumento para medir los efectos subjetivos producidos por la 3,4-metilenodioximentanfetamina (MDMA). Tras la construcción de un banco de ítems, posteriores reducciones y un análisis factorial, se obtuvo un cuestionario de 36 ítems al que se le denominó VESSPA (Valoración de Efectos Subjetivos de Sustancia con Potencial de Abuso). El cuestionario consta de 6 escalas: “Sedación”, “Somatización Ansiosa”, “Cambios de Percepción”, “Placer y Contacto Social”, “Actividad ...

  11. 77 FR 37806 - Disregarded Entities and the Indoor Tanning Services Excise Tax

    Science.gov (United States)

    2012-06-25

    ... Services Excise Tax AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Final and temporary... (including qualified subchapter S subsidiaries) and the indoor tanning services excise tax. These regulations affect disregarded entities responsible for collecting the indoor tanning services excise tax and...

  12. Tanning behaviors and determinants of solarium use among indoor office workers in Queensland, Australia.

    Science.gov (United States)

    Gordon, Louisa G; Hirst, Nicholas G; Green, Adèle C; Neale, Rachel E

    2012-09-01

    Using cross-sectional survey data from Brisbane, Australia, this study identifies prevalence and factors associated with indoor tanning in office workers. Over 12-months, 72/2867 (2.5%) survey participants used solaria. Twenty-eight sunbed users (39%) tanned outdoors and used spray-tans and 42 (58%) reported burns after indoor tanning. Results from regression modelling suggests the strongest predictors of sunbed use were beliefs that tanning was safer indoors than outdoors (OR 6.1, 95%CI: 2.6-14.0) and engaging in outdoor tanning (OR 4.1, 95%CI: 1.8-9.0). We recommend that health authorities promote health gains by reducing ultraviolet radiation exposure or substituting indoor tanning with a spray-on tan. PMID:22131168

  13. Prevalence and correlates of indoor tanning and sunless tanning product use among female teens in the United States

    Directory of Open Access Journals (Sweden)

    Megan Quinn

    2015-01-01

    Conclusions: Results indicate a significant proportion of teen females engage in IT and STP use. There was evidence that in teens that have never used IT before, STP use precedes IT initiation. Given the evidence for increased IT in rural populations, research focused on rural tanning bed use is needed.

  14. Do Australian Adolescent Female Fake Tan (Sunless Tan) Users Practice Better Sun-Protection Behaviours than Non-Users?

    Science.gov (United States)

    Williams, Melinda; Jones, Sandra C.; Caputi, Peter; Iverson, Don

    2012-01-01

    Objective: To determine differences in sun-protection behaviours, and incidence of sunburn, between Australian adolescent female fake tan users and non-users. Design: Cross sectional survey. Method: 398 adolescent females aged 12 to 18 years participated in a survey at public venues, schools, and online. The main outcome measures were…

  15. Tan Silliksaar, Tõnu Ling : meie piltides ei ole mingit trikitamist ega skandaali / Tõnu Ling, Tan Silliksaar ; interv. Heli Salong

    Index Scriptorium Estoniae

    Ling, Tõnu

    2005-01-01

    Kuressaare kultuurikeskuses ja Saaremaa kunstistuudios avati Tõnu Lingi ja Tan Silliksaare fotonäitus-müük "Maameeste maastikud". Fotod on prinditud spetsiaalsele, kunsti reprodutseerimiseks mõeldud lõuendile. Autorid oma koostööst, fotodest, lõuenditehnikast

  16. La universitat i quelcom anomenat universitat The university and something we call university La universidad y algo llamado universidad

    Directory of Open Access Journals (Sweden)

    Francisco Esteban Bara

    2011-01-01

    é au point de nommer université ce qui n’en est pas une.It seems that Postmodernism is reasonably clear about what kind of university we need. Regardless of the specific nature of each place, the ideal is that of a university which is useful, effective and efficient, and which drives economic and social change. Without going any further, the European Higher Education Area (EHEA is a proposal which reflects this approach. However, it seems to have overlooked the true nature of the university, which underlies the institution. The concept of the university does not sit comfortably with certain contemporary demands and pressures, and has to speak out to explain to the community what it is for. This work looks into the tensions which affect the university on a daily basis, and indicates some of the pitfalls that await. Depending on our point of view, we may feel that we are calling something a university which is really something elseDa la sensación de que la posmodernidad tiene más o menos claro qué universidad necesitamos. Independientemente de las particularidades de cada lugar, se plantea una universidad que sea útil, efectiva y eficiente, que se convierta en un motor de cambio económico y social. Sin ir más lejos, el Espacio Europeo de Educación Superior (EEES constituye una propuesta que refleja este planteamiento. Sin embargo, parece ser que se ha olvidado qué es realmente la universidad, qué hay detrás de su institucionalización. La idea de universidad se siente incómoda ante determinadas demandas y urgencias contemporáneas, y necesita levantar su voz para decir a la comunidad cuál es su razón de ser. El trabajo que se presenta trata sobre las tensiones en las que a día de hoy se ve envuelta la universidad, a la vez que señala los peligros que la acechan. Según como se mire, se podría llegar a un punto que llamamos universidada algo que en realidad no lo es.

  17. Education versus regulation: The case for regulating the indoor tanning industry.

    Science.gov (United States)

    Benet, Suzeanne; Kraft, Frederic

    2016-05-01

    We examine marketing strategies for indoor tanning services that often target young adult females. Evidence of the addictive nature of indoor tanning suggests that young adults may be vulnerable to the promotion of indoor tanning and as a result deserve greater protection from the marketing of these services. As public awareness of the rising numbers of skin cancers linked to indoor tanning grows, we believe that the public will support increased regulation of this industry. PMID:26911656

  18. UNA APROXIMACIÓN AL PAISAJE COMO CATEGORÍA JURÍDICA Y DERECHO SUBJETIVO EN EL PLAN DE ORDENAMIENTO TERRITORIAL DE MEDELLÍN.

    Directory of Open Access Journals (Sweden)

    César Augusto Molina Saldarriaga

    2013-05-01

    Full Text Available Se reflexiona en torno al paisaje como concepto en el orden jurídico colombiano a partir del análisis dogmático de normas internacionales, nacionales y locales. El objetivo es determinar la existencia del paisaje como categoría jurídica susceptible de protección como derecho subjetivo en el orden jurídico colombiano, y la normativa de planeación y gestión del suelo en la ciudad de Medellín. Del análisis se evidencia un tratamiento plurívoco, cuando no equívoco del paisaje. Esto se traduce en el tratamiento diverso que se le da en las normas de planeación y gestión del suelo urbano en la ciudad de Medellín. Se destaca la necesidad de reflexionar con mayor profundidad sobre la relación del paisaje con la planeación de la ciudad y la gestión del suelo, y la necesidad de un mayor activismo de los jueces en su protección como derecho subjetivo.

  19. Molecular modeling approach to vegetable tanning: preliminary results for gallotannin interactions with the collagen microfibril

    Science.gov (United States)

    Tanning of animal hides produces leather, a durable, flexible material that is stabilized against putrefaction. Chrome-tanned wet blue, aldehyde crosslinked wet white, and vegetable tanned hides are major contributors to current leather production. Although the chemistries involved are significant...

  20. Indoor Tanning within UK Young Adults: An Extended Theory of Planned Behaviour Approach

    OpenAIRE

    Dodd, Lorna J.; Forshaw, Mark J.; Williams, Stella

    2013-01-01

    The indoor tanning industry poses a long-term public health risk. Despite the adverse health effects, indoor tanning seems to be gaining considerable popularity. The study examined indoor tanning intentions and behaviour within UK young adults using an extended theory of planned behaviour model, which included variables on “appearance reasons to tan,” “perceived susceptibility to damaging appearance,” “perceived susceptibility to health consequences,” and “tanning knowledge.” The model was su...

  1. Evidence for tanning from plant and insect remains

    OpenAIRE

    Hall, A.; H. Kenward

    2003-01-01

    [FIRST PARAGRAPH] It is suggested elsewhere (Hall and Kenward forthcoming) that a bioarchaeological 'indicator group' (sensa Kenward and Hall 1997) for tanning may be recognisable. The material giving rise to this hypothesis was discovered during assessment of samples from Anglo-Scandinavian and early post- Conquest riverside deposits at Layerthorpe Bridge, York (Carrott et al. 1997). Here, large quantities of bark fragments (and the sclereids -small clumps of lignified cells characteristic o...

  2. Membrane-based treatment for tanning wastewaters 

    OpenAIRE

    Catarino, Justina; Mendonça, E.; Picado, Ana; Lança, Ana; Silva, Luís Manuel; Pinho, Maria

    2013-01-01

    Tanning wastewater was subjected to different unit operations to select the best treatment sequences. Textile membrane filtration (TMF), microfiltration (MF), and ultrafiltration (UF) were complemented by screening, flocculation or flotation operations. The general chemical characterization determined that the wastewater had a high organic load. The ecotoxicological study classified the wastewater as highly ecotoxic. The sequence of screening–TMF – UF was found to be the optimal treatment...

  3. Study of the dechroming of tanned leather wastes

    OpenAIRE

    Botić Tatjana; Ilišković Nadežda V.; Drljača Dijana

    2004-01-01

    According to European legislation, it is not possible to dump any chromium-containing waste in Europe. The minimization of wastes is a key element in that strategy. It involves the application of clean technologies: low and non-waste technologies. The tanning industry generates substantial quantities of chromium-containing solid waste in the form of shavings and trimmings. The recycling and reuse of those wastes must be the primary target in optimizing processes of the leather industry. The p...

  4. Effect of gamma radiation on chrome-tanned sheepskin

    International Nuclear Information System (INIS)

    Effect of 60 γ-radiation on chrome-tanned, blue-stock sheepskin was investigated. Radiation was applied between 0.35-10.5 Mrad and the resultant physical and mechanical changes were observed. Radiation did not change the water adsorption capability of leather but caused significant reductions in shrinkage temperature and tensile strength. The correlations between dose and radiation hazards were determined. (author)

  5. Electrweak Z-string And $\\tan\\beta$

    CERN Document Server

    La, H S

    1993-01-01

    In the standard model with two Higgs doublets it is shown that the existence of the electroweak Z-string in general requires the same characteristic length for the two Higgs fields as well as a specific ratio of the two Higgs vacuum expectation values, i.e. $\\tan\\beta$. This ratio can be determined in terms of the couplings in the Higgs potential. Some remarks on the supersymmetric case are given. \

  6. Thrust augmentation nozzle (TAN) concept for rocket engine booster applications

    Science.gov (United States)

    Forde, Scott; Bulman, Mel; Neill, Todd

    2006-07-01

    Aerojet used the patented thrust augmented nozzle (TAN) concept to validate a unique means of increasing sea-level thrust in a liquid rocket booster engine. We have used knowledge gained from hypersonic Scramjet research to inject propellants into the supersonic region of the rocket engine nozzle to significantly increase sea-level thrust without significantly impacting specific impulse. The TAN concept overcomes conventional engine limitations by injecting propellants and combusting in an annular region in the divergent section of the nozzle. This injection of propellants at moderate pressures allows for obtaining high thrust at takeoff without overexpansion thrust losses. The main chamber is operated at a constant pressure while maintaining a constant head rise and flow rate of the main propellant pumps. Recent hot-fire tests have validated the design approach and thrust augmentation ratios. Calculations of nozzle performance and wall pressures were made using computational fluid dynamics analyses with and without thrust augmentation flow, resulting in good agreement between calculated and measured quantities including augmentation thrust. This paper describes the TAN concept, the test setup, test results, and calculation results.

  7. Effective ultraviolet irradiance measurements from artificial tanning devices in Greece

    International Nuclear Information System (INIS)

    Artificial tanning remains very popular worldwide, despite the International Agency for Research on Cancer classification of ultraviolet (UV) radiation from sun-beds as 'carcinogenic to humans'. Greek Atomic Energy Commission has initiated a surveillance action of the artificial tanning devices in Greece in order to record the effective irradiance levels from the sun-beds and to inform and synchronise the domestic artificial tanning business sector with the requirements of the European Standard EN 60335-2-27:2010. In this direction, in situ measurements of UV emissions from sun-beds in solaria businesses all over Greece were performed from October 2013 until July 2014, with a radiometer and a portable single-monochromator spectrophotometer. Analysis of the measurements' results revealed that effective irradiance in ∼60 % of the measured sun-beds exceeded the 0.3 W m-2 limit value set by EN 60335-2-27:2010 and only 20 % of the devices could be categorised as UV type 3. (authors)

  8. Status of TanDEM-X DEM Calibration and Mosaicking towards the TanDEM-X DEM

    OpenAIRE

    Wessel, Birgit; Gruber, Astrid; Huber, Martin; Breunig, Markus; Wagenbrenner, Susanne; Roth, Achim

    2014-01-01

    With begin of 2013 DEM production started with the generation of the Intermediate TanDEM-X DEM (IDEM) for selected science and commercial test sites. This paper gives an overview of the Intermediate DEM production that took place from end of 2012 until July 2013. It describes the DEM production process and the lessons learnt by the IDEM phase. Since autumn 2013 the final DEM generation has begun in flat areas.

  9. Exposure to the "Dark Side of Tanning" Skin Cancer Prevention Mass Media Campaign and Its Association with Tanning Attitudes in New South Wales, Australia

    Science.gov (United States)

    Perez, Donna; Kite, James; Dunlop, Sally M.; Cust, Anne E.; Goumas, Chris; Cotter, Trish; Walsberger, Scott C.; Dessaix, Anita; Bauman, Adrian

    2015-01-01

    Melanoma is the most common cancer among 15- to 29-year-olds in Australia, with rates increasing with age. The "Dark Side of Tanning" (DSOT) mass media campaign was developed in 2007 to influence attitudes related to tanning. This study aimed to assess recall and impact of the DSOT campaign. Data were collected using online surveys of…

  10. UNA APROXIMACIÓN AL PAISAJE COMO CATEGORÍA JURÍDICA Y DERECHO SUBJETIVO EN EL PLAN DE ORDENAMIENTO TERRITORIAL DE MEDELLÍN.

    OpenAIRE

    César Augusto Molina Saldarriaga

    2013-01-01

    Se reflexiona en torno al paisaje como concepto en el orden jurídico colombiano a partir del análisis dogmático de normas internacionales, nacionales y locales. El objetivo es determinar la existencia del paisaje como categoría jurídica susceptible de protección como derecho subjetivo en el orden jurídico colombiano, y la normativa de planeación y gestión del suelo en la ciudad de Medellín. Del análisis se evidencia un tratamiento plurívoco, cuando no equívoco del paisaje. Esto se traduce en...

  11. El reconocimiento de los derechos públicos subjetivos y la reforma constitucional en materia de derechos humanos de junio de 2011

    Directory of Open Access Journals (Sweden)

    Francisco José Murillo Ruiseco

    2013-02-01

    Full Text Available El reconocimiento de los derechos públicos subjetivos constituye uno de los principios fundamentales del Estado moderno. Limitarse a considerar los derechos del hombre frente al Estado como una esfera extrajurídica al modo de Hans Kelsen, o como una capacidad de hacer o no hacer optativa al modo que Eduardo García Máynez, no permite comprender el contenido con que la idea se ha ido presentando históricamente. Los derechos reconocidos al hombre frente al Estado no son puramente libertad en el sentido formalista, sino aptitud de exigir al propio Estado una cierta conducta y no se podrá concebir el concepto en su plenitud sino a condición de que se haga una revisión, siquiera superficial, de su proceso de transformación

  12. Development of Wet-white Leather Tanning Technology%白湿革鞣制技术研究进展

    Institute of Scientific and Technical Information of China (English)

    薛巡天; 王韬; 厉巧萍; 于凤; 罗建勋

    2014-01-01

    The tanning mechanisms and tanning characteristics of wet-white leather tanning technologies such as tanages using chromium-free metal tanning agent, silicon tanning agent, aldehyde tanning agent, vegetable tannin, were reviewed. In particular, the latest research on wet-white tanning agents at home and abroad was discussed.%综述了非铬金属鞣剂、硅鞣剂、醛鞣剂、植物鞣剂等白湿革鞣制技术的鞣制机理及鞣制特性,以及近年来国内外最新的白湿革鞣剂研究成果。

  13. An in vivo evaluation of surface polishing of TAN intermedullary nails for ease of removal

    Directory of Open Access Journals (Sweden)

    JS Hayes

    2009-09-01

    Full Text Available Fractures of the tibia and femoral diaphysis are commonly repaired by intra-medullary (IM nailing. Currently IM nails are available in either electropolished stainless steel (SS or in Titanium-Aluminium-Niobium (TAN. After healing, removal of the nails still is common but removal of TAN IM nails often has complications whereas SS IM nails of the same design are less often associated with problems. We believe the differences in removal are due to the ability of TAN to promote strong bone on-growth. We have previously shown in vivo that polishing cortical screws reduces removal torque and the percentage of bone-implant contact. Therefore, we postulate that bony on-growth onto IM nails can be reduced by means of surface polishing, for ease of removal. Here we aim to compare the pull-out forces for removal of standard TAN (TAN-S compared to experimental paste polished TAN (TAN-PP IM nails from a bilateral non-fracture sheep tibia model after 12 months implantation. Histological analysis was also performed to assess tissue on-growth to the nails. We show that polishing significantly reduces (p=0.05 the extraction force required for TAN IM nail removal. This effect in part is attributable to the distinct tissue-material reaction produced. For TAN-S nails direct bone contact was observed while for TAN-PP nails a fibrous tissue interface was noted. Since TAN is preferred over SS for IM nailing due to superior biocompatibility and mechanical properties, we believe these findings could be used to recommend changes to current surface technologies of intramedullary nails to reduce complications seen with nail removal especially in rapidly growing bone in children.

  14. News reports: update on buying indoor uv tanning with university debit cards

    OpenAIRE

    Goff, Kiera L; Karimkhani, Chante; Boyers, Lindsay N.; Hernandez, Melia D; Pederson, Hannah; Royer, Eryn L; Dellavalle, Robert P.

    2015-01-01

    Background & Objective: Indoor tanning by adults under 35 years of age increases the risk of developing melanoma 59% to 75%. Cost is a major barrier limiting young adults from purchasing indoor tanning services. Our recent study by Boyers et al determined that 18 of 96 major universities, all in the eastern and southern United States, had university-sponsored debit cards with indoor tanning affiliations. These debit cards, which conveniently link with student identification (ID) cards, help w...

  15. Hydrolysis of tanned leather wastes under alkaline, acidic and oxidative conditions

    OpenAIRE

    Botić Tatjana; Ilišković Nadežda

    2006-01-01

    Different wastes in large quantities are the outcome or the by-product of processes in the tanning industry. The largest part of solid wastes is collagen based and obtained in the reprocessing steps of tanned and non-tanned products. The quality collagen substance obtained from wastes of the leather industry used as a supporting material in many reprocessing industries. Hydrolysis is the basic step of collagen processing, namely the shortening of its polypeptide chain. The main goal of this i...

  16. North American Magazine Coverage of Skin Cancer and Recreational Tanning Before and After the WHO/IARC 2009 Classification of Indoor Tanning Devices as Carcinogenic.

    Science.gov (United States)

    McWhirter, Jennifer E; Hoffman-Goetz, Laurie

    2015-09-01

    The mass media is an influential source of skin cancer information for the public. In 2009, the World Health Organization's International Agency for Research on Cancer classified UV radiation from tanning devices as carcinogenic. Our objective was to determine if media coverage of skin cancer and recreational tanning increased in volume or changed in nature after this classification. We conducted a directed content analysis on 29 North American popular magazines (2007-2012) to investigate the overall volume of articles on skin cancer and recreational tanning and, more specifically, the presence of skin cancer risk factors, UV behaviors, and early detection information in article text (n = 410) and images (n = 714). The volume of coverage on skin cancer and recreational tanning did not increase significantly after the 2009 classification of tanning beds as carcinogenic. Key-related messages, including that UV exposure is a risk factor for skin cancer and that indoor tanning should be avoided, were not reported more frequently after the classification, but the promotion of the tanned look as attractive was conveyed more often in images afterwards (p < .01). Content promoting high-SPF sunscreen use increased after the classification (p < .01), but there were no significant positive changes in the frequency of coverage of skin cancer risk factors, other UV behaviors, or early detection information over time. The classification of indoor tanning beds as carcinogenic had no significant impact on the volume or nature of skin cancer and recreational tanning coverage in magazines. PMID:25189799

  17. Alkali-free method of hide preparation for tanning

    Directory of Open Access Journals (Sweden)

    V. Valeika

    2012-06-01

    Full Text Available Usually, beamhouse processes are carried out by varying a medium from strongly alkaline (unhairing-liming up to strongly acid (pickling. This study is designed to develop a preparation of hide for tanning via processes that avoid a sharp change of hide pH. Enzymes active in acid medium are employed for hide unhairing in a buffer system containing 2.5% acetic acid and 0.3% sodium acetate. An oxidative treatment with peracetic acid then allows the complete removal of residual hair and scud. During both processes, unhairing and oxidative treatment, the opening of the derma structure occurs: 13.3-14.6g of non-collagen proteins are removed and amount of dermatan sulphate decreases by 35%. The hide obtained can be chromed directly after the above processes and subsequent treatment with sodium chloride solution omitted conventional pickling. The pH of the hide varies in the range of 8.3-3.7 during the processes of preparation for tanning.

  18. Benchmark scenarios for low $\\tan \\beta$ in the MSSM

    CERN Document Server

    Bagnaschi, Emanuele; Frensch, Felix; Heinemeyer, Sven; Lee, Gabriel; Liebler, Stefan Rainer; Muhlleitner, Milada; Mc Carn, Allison Renae; Quevillon, Jeremie; Rompotis, Nikolaos; Slavich, Pietro; Spira, Michael; Wagner, Carlos; Wolf, Roger

    2015-01-01

    The run-1 data taken at the LHC in 2011 and 2012 have led to strong constraints on the allowed parameter space of the MSSM. These are imposed by the discovery of an approximately SM-like Higgs boson with a mass of $125.09\\pm0.24$~GeV and by the non-observation of SUSY particles or of additional (neutral or charged) Higgs bosons. For low values of the parameter $\\tan\\beta$, the direct bounds on the masses of the additional Higgs bosons are still relatively weak, but very heavy SUSY particles are required to reproduce the observed mass of the SM-like Higgs boson. In this document we discuss and compare two approaches for predicting the properties of the Higgs bosons in the region with low $\\tan\\beta$ and heavy SUSY. We also make recommendations for the sets of parameters to be used by the ATLAS and CMS collaborations in the analysis of such scenarios.

  19. Study of the dechroming of tanned leather wastes

    Directory of Open Access Journals (Sweden)

    Botić Tatjana

    2004-01-01

    Full Text Available According to European legislation, it is not possible to dump any chromium-containing waste in Europe. The minimization of wastes is a key element in that strategy. It involves the application of clean technologies: low and non-waste technologies. The tanning industry generates substantial quantities of chromium-containing solid waste in the form of shavings and trimmings. The recycling and reuse of those wastes must be the primary target in optimizing processes of the leather industry. The problem is in a satisfying chromium separation from collagen fibers. Common hydrolysis processes-alkaline or acidic-give gelatins containing residual chromium (III. By using an oxidation agent (H2O2 before alkaline hydrolysis, in was demonstrated that chromium from chromium-containing leather wastes can be almost fully recovered by the previous oxidation of Cr(III to Cr(VI. This chromium can be reused in the tanning process. That would represent an economic saving. The best result of the dechroming process was a gelatin hydrolyzate with only 1.11 in respect to the initial amount.

  20. Enhancement of chromium uptake in tanning using oxazolidine.

    Science.gov (United States)

    Sundarapandiyan, S; Brutto, Patrick E; Siddhartha, G; Ramesh, R; Ramanaiah, B; Saravanan, P; Mandal, A B

    2011-06-15

    Monocyclic and bicyclic oxazolidines were offered at three different junctures of chrome tanning process viz. prior to BCS offer, along with BCS and after basification. It was found that oxazolidine when offered after basification brought about better chromium uptake and reduction of chromium load in the wastewater. Offer of oxazolidine was also varied. Increase in offer of oxazolidine from 0.25% to 1% was found to enhance the chromium uptake and decrease the chromium load in wastewater. But the increase in uptake was not proportionate to the increase in oxazolidine offer more than 0.75%. Offer of 1% Zoldine ZA 78 (monocyclic oxazolidine) and Zoldine ZE (bicyclic oxazolidine) after basification brought about 63.4% and 73.1% enhancement in chrome content in leather compared to control where oxazolidine was not offered. The tone of the wetblue was found to be altered moderately. However this did not call for any process adjustments in wet-finishing. The oxazolidine treated leathers were found to be immensely fuller and tighter. It was found experimentally that offer of 1% of oxazolidine facilitated reduction in the offer of syntans administered for filling and grain tightening by around 46%. Oxazolidine could bring about significant reduction in cost of chemicals apart from resulting environmental benefits due to enhancement of chromium uptake during tanning. PMID:21536383

  1. Spectroscopy of TaN in Support of Fundamental Physics

    Science.gov (United States)

    Mawhorter, Richard; Sharfi, David; Kim, Yongrak; Kokkin, Damian; Bouchard, Jacob; Steimle, Timothy

    2016-05-01

    Tantalum nitride, TaN, has been recently identified as a leading candidate for extending the study of T, P-odd effects in the nuclear realm to include proton, neutron, and quark electric dipole moments (EDM) and beyond. This is primarily due to enhancements in the interaction of electrons with the nuclear magnetic quadrupole moment (MQM) and the resulting parity-violating effects. Study of the dispersed laser induced fluorescence resulting from the excitation of the 17570.80 (Ω = 0+) , 18427.38 (Ω = 0+) , 19216.80 (Ω = 1), and 19396.78 (Ω = 1) bands above the X1Σ+ (v = 0) ground state of TaN near 569 nm, 543 nm, 520 nm, and 515 nm has enabled a determination of the branching ratios and transition dipole moments of all 4 states. Radiative lifetimes of 454(32) ns, 479(12) ns, 333(4) ns, and 480(17) ns respectively were measured from an analysis of the fluorescence decay curves, and potential optical pumping approaches for both populating and detecting the parity-violation sensitive 3Δ1 state are proposed. Further experiments using CW laser excitation have enabled the observation of the hyperfine structure of several bands in the gateway 18427.38 (Ω = 0+) to X1Σ+ (v = 0) transition, and analysis of these complex spectra is underway. DK, JB, and TS acknowledge support from NSF CHE-1265885, as do RM, DS, and YK from Pomona College.

  2. Enforcement Provisions of Indoor Tanning Bans for Minors: An Analysis of the First 6 US States.

    Science.gov (United States)

    Bulger, Amy L; Mayer, Jonathan E; Gershenwald, Jeffrey E; Guild, Samantha R; Gottlieb, Mark A; Geller, Alan C

    2015-08-01

    Several states have passed legislation banning minors from indoor tanning; however, concern has been raised regarding enforcement. We explored the statutes pertaining to enforcement in the first 6 US states to pass legislation banning minors younger than 18 years from indoor tanning. The findings reflect significant variability in enforcement provisions across the 6 states. Further investigations are needed to determine whether the statutes are successful in curbing indoor tanning among youths and ultimately whether indoor tanning bans among minors help to reduce skin cancer incidence. PMID:26066916

  3. Mood changes after indoor tanning among college women: associations with psychiatric/addictive symptoms

    Directory of Open Access Journals (Sweden)

    Carolyn Heckman

    2016-06-01

    Full Text Available Indoor tanning (IT has been linked with psychiatric and addictive symptoms, and frequent tanning may indicate tanning dependence (addiction. The current study evaluated the effects of an IT episode on mood states and the association of these effects with psychiatric and addictive symptoms among young adult female indoor tanners. One-hundred thirty-nine female university students aged 18-25 years who had indoor tanned completed an online survey including the Positive and Negative Affects Scales and a standardized psychiatric interview (the MINI International Neuropsychiatric Interview via telephone. Psychiatric and addictive symptoms were relatively common among these young adult female indoor tanners. Overall, participants reported significant decreases in both negative (upset, scared, irritable, nervous, jittery, afraid and positive (feeling interested mood states after their most recent tanning episode. Multivariable linear regression analyses showed that more frequent indoor tanning in the past month and symptoms of illicit drug use disorders were associated with decreases in negative mood, and symptoms of generalized anxiety disorder were associated with a decrease in feeling interested. In summary, indoor tanners report relatively high rates of psychiatric and substance use symptoms, including symptoms of tanning dependence, and indoor tanning appears to alter mood. Women with certain substance use and psychiatric characteristics may be more vulnerable to such mood changes after tanning indoors. Further research is needed to clarify the relationships among these variables.

  4. Lifetime history of indoor tanning in young people: a retrospective assessment of initiation, persistence, and correlates

    Directory of Open Access Journals (Sweden)

    Lostritto Karen

    2012-02-01

    Full Text Available Abstract Background Despite educational and public health campaigns to convey the risks of indoor tanning, many individuals around the world continue to engage in this behavior. Few descriptive studies of indoor tanning have collected information pertaining to the lifetime history of indoor tanning, thereby limiting our ability to understand indoor tanning patterns and potentially target interventions for individuals who not only initiate, but continue to persistently engage in indoor tanning. Methods In-person interviews elicited detailed retrospective information on lifetime history of indoor tanning among white individuals (n = 401 under age 40 seen by a dermatologist for a minor benign skin condition. These individuals were controls in a case-control study of early-onset basal cell carcinoma. Outcomes of interest included ever indoor tanning in both males and females, as well as persistent indoor tanning in females - defined as females over age 31 who tanned indoors at least once in the last three or all four of four specified age periods (ages 11-15, 16-20, 21-30 and 31 or older. Multivariate logistic regression was used to identify sociodemographic and lifestyle correlates of ever and persistent indoor tanning in females. Results Approximately three-quarters (73.3% of females and 38.3% of males ever tanned indoors, with a median age of initiation of 17.0 and 21.5, respectively. Among indoor tanners, 39.3% of females and 21.7% of males reported being burned while indoor tanning. Female ever indoor tanners were younger, had darker color eyes, and sunbathed more frequently than females who never tanned indoors. Using unique lifetime exposure data, 24.7% of female indoor tanners 31 and older persistently tanned indoors starting as teenagers. Female persistent indoor tanners drank significantly more alcohol, were less educated, had skin that tanned with prolonged sun exposure, and sunbathed outdoors more frequently than non-persistent tanners

  5. Mood Changes After Indoor Tanning Among College Women: Associations with Psychiatric/Addictive Symptoms.

    Science.gov (United States)

    Heckman, Carolyn; Darlow, Susan; Cohen-Filipic, Jessye; Kloss, Jacqueline

    2016-06-23

    Indoor tanning (IT) has been linked with psychiatric and addictive symptoms, and frequent tanning may indicate tanning dependence (addiction). The current study evaluated the effects of an IT episode on mood states and the association of these effects with psychiatric and addictive symptoms among young adult female indoor tanners. One-hundred thirty-nine female university students aged 18-25 years who had indoor tanned completed an online survey including the Positive and Negative Affects Scales and a standardized psychiatric interview (the MINI International Neuropsychiatric Interview) via telephone. Psychiatric and addictive symptoms were relatively common among these young adult female indoor tanners. Overall, participants reported significant decreases in both negative (upset, scared, irritable, nervous, jittery, afraid) and positive (feeling interested) mood states after their most recent tanning episode. Multivariable linear regression analyses showed that more frequent indoor tanning in the past month and symptoms of illicit drug use disorders were associated with decreases in negative mood, and symptoms of generalized anxiety disorder were associated with a decrease in feeling interested. In summary, indoor tanners report relatively high rates of psychiatric and substance use symptoms, including symptoms of tanning dependence, and indoor tanning appears to alter mood. Women with certain substance use and psychiatric characteristics may be more vulnerable to such mood changes after tanning indoors. Further research is needed to clarify the relationships among these variables. PMID:27403462

  6. More skin, more sun, more tan, more melanoma.

    Science.gov (United States)

    Chang, Caroline; Murzaku, Era Caterina; Penn, Lauren; Abbasi, Naheed R; Davis, Paula D; Berwick, Marianne; Polsky, David

    2014-11-01

    Although personal melanoma risk factors are well established, the contribution of socioeconomic factors, including clothing styles, social norms, medical paradigms, perceptions of tanned skin, economic trends, and travel patterns, to melanoma incidence has not been fully explored. We analyzed artwork, advertisements, fashion trends, and data regarding leisure-time activities to estimate historical changes in UV skin exposure. We used data from national cancer registries to compare melanoma incidence rates with estimated skin exposure and found that they rose in parallel. Although firm conclusions about melanoma causation cannot be made in an analysis such as this, we provide a cross-disciplinary, historical framework in which to consider public health and educational measures that may ultimately help reverse melanoma incidence trends. PMID:25211764

  7. Exposure to the 'Dark Side of Tanning' skin cancer prevention mass media campaign and its association with tanning attitudes in New South Wales, Australia.

    Science.gov (United States)

    Perez, Donna; Kite, James; Dunlop, Sally M; Cust, Anne E; Goumas, Chris; Cotter, Trish; Walsberger, Scott C; Dessaix, Anita; Bauman, Adrian

    2015-04-01

    Melanoma is the most common cancer among 15- to 29-year-olds in Australia, with rates increasing with age. The 'Dark Side of Tanning' (DSOT) mass media campaign was developed in 2007 to influence attitudes related to tanning. This study aimed to assess recall and impact of the DSOT campaign. Data were collected using online surveys of 13- to 44-year-olds living in New South Wales in the summer months of 2007-2010 (n = 7490). Regression models were used to determine predictors of recall of DSOT and to investigate associations between exposure to the campaign and tanning attitudes. The campaign achieved consistently high recall (unprompted recall 42-53% during campaign periods; prompted recall 76-84%). Those who recalled DSOT advertisements had a higher likelihood of reporting negative tanning attitudes compared with those who reported no recall, after adjusting for other factors (odds ratio [OR] 1.13, 95% confidence interval [CI] 1.01-1.27 for unprompted recall; OR 1.19, 95% CI 1.03-1.36 for prompted recall). Being interviewed in later campaign years was also a significant predictor of negative tanning attitudes (e.g. fourth year of campaign versus first year: OR 1.24, 95% CI 1.01-1.53). These results suggest that mass media campaigns have potential to influence tanning-related attitudes and could play an important role in skin cancer prevention. PMID:25697580

  8. A new process for the synthesis of naphthalene based tanning agent

    International Nuclear Information System (INIS)

    A new process developed for the preparation of naphthalene catechu tanning agent consisted of sulphonation of naphthalene, condensation with formaldehyde, combining with naturally occurring catechol, followed by neutralization of the reaction mixture. The product was then dried, analyzed and tested for application on wet blue leather which showed excellent tanning properties. (author)

  9. 77 FR 37838 - Disregarded Entities and the Indoor Tanning Services Excise Tax

    Science.gov (United States)

    2012-06-25

    ... Services Excise Tax AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice of proposed rulemaking... (including qualified subchapter S subsidiaries) and the indoor tanning services excise tax. These regulations affect disregarded entities responsible for collecting the indoor tanning services excise tax and...

  10. On Chinese American Identity Dilemma in Amy Tan's The Bonesetter's Daughter

    Institute of Scientific and Technical Information of China (English)

    梁福江

    2010-01-01

    In The Bonesetter's Daughter,Amy Tan explores the complexity of Chinese American identity dilemma confronted by the major charactersThis paper in-tends to examine the marginalized position of the Chinese immigrant mother Luling and the American bom daughter Ruth and reveal the ideology of Amy Tan's writing beyond the bounds of ethnicity.

  11. Lesions in DNA of hypoxic mammalian cells irradiated in the presence of TAN

    International Nuclear Information System (INIS)

    TAN (triacetoneamine-N-oxyl) at a concentration of 10mM gives a dose modifying factor (DMF) of 1.45 for the surviving fraction of γ irradiated hypoxic mammalian cells. Under the same conditions, however TAN produces little or no enhancement of single strand breaks (SSB) in DNA (DMFapproximately equal to 1). In this study, enhancement of the type of DNA lesions exposed by an extract of M. luteus is reported. The DMF for this type of damage (MLS) is 1.5. TAN is known to affect the size of DNA synthesized after irradiation, presumably by causing interruptions in synthesis at TAN-DNA adduct sites. The absolute number of M. luteus extract sensitive sites detected in this work corresponds to approximately one half of the number of sites of interrupted synthesis. In its sensitizing effect on DNA, the free radical TAN is different from the electron affinic drug, misonidazole. (author)

  12. Changes in skin tanning attitudes. Fashion articles and advertisements in the early 20th century.

    Science.gov (United States)

    Martin, Jo M; Ghaferi, Jessica M; Cummins, Deborah L; Mamelak, Adam J; Schmults, Chrys D; Parikh, Mona; Speyer, Lark-Aeryn; Chuang, Alice; Richardson, Hazel V; Stein, David; Liégeois, Nanette J

    2009-12-01

    Historical reviews suggest that tanning first became fashionable in the 1920s or 1930s. To quantitatively and qualitatively examine changes in tanning attitudes portrayed in the popular women's press during the early 20th century, we reviewed summer issues of Vogue and Harper's Bazaar for the years 1920, 1927, 1928, and 1929. We examined these issues for articles and advertisements promoting skin tanning or skin bleaching and protection. We found that articles and advertisements promoting the fashionable aspects of tanned skin were more numerous in 1928 and 1929 than in 1927 and 1920, whereas those promoting pale skin (by bleaching or protection) were less numerous. These findings demonstrate a clear shift in attitudes toward tanned skin during this period. PMID:19846688

  13. A influência de ritmos musicais sobre a percepção dos estados subjetivos de pacientes adultos em hemodiálise La influencia de ritmos musicales sobre la percepción de los estados subjetivos de pacientes adultos en hemodiálisis The influence of musical rhythms on the perception of subjective states of adult patients on dialysis

    Directory of Open Access Journals (Sweden)

    Leandro Bechert Caminha

    2009-12-01

    Full Text Available Submeter-se à Hemodiálise quatro horas por dia, três vezes por semana, pode configurar-se uma experiência carregada de tédio, além de causar desconforto durante sua realização. É comum os pacientes relatarem que o tempo parece se arrastar ou durar mais. O objetivo deste estudo foi conhecer a influência de dois diferentes ritmos musicais nos estados subjetivos e na percepção tempo-sensorial de pacientes adultos submetidos à hemodiálise, uma vez que a literatura sobre essa temática é escassa. O estudo foi realizado em um hospital privado, com 43 pacientes em hemodiálise, que se submeteram a duas sessões de improvisação musical em um teclado, nas quais os estados subjetivos e a percepção temporal foram avaliados pré e pós-intervenção. Mais de 80% dos pacientes sentiu o tempo passar mais rápido após as intervenções em ambos os ritmos. No entanto, o ritmo influenciou o tipo de experiência emocional que os pacientes apresentaram.Someterse a la Hemodiálisis cuatro horas por día, tres veces por semana, puede configurarse en una experiencia cargada de tedio, además de causar incomodidad durante su realización. Es común que los pacientes relaten que el tiempo parece arrastrarse o durar más. El objetivo de este estudio fue conocer la influencia de dos diferentes ritmos musicales en los estados subjetivos y en la percepción del tiempo sensorial de pacientes adultos sometidos a la hemodiálisis, una vez que la literatura sobre esa temática es escasa. El estudio fue realizado en un hospital privado, con 43 pacientes en hemodiálisis, que se sometieron a dos sesiones de improvisación musical en un teclado, en las cuales los estados subjetivos y la percepción temporal fueron evaluados antes y después de la intervención. Más de 80% de los pacientes sintió el tiempo pasar más rápido después de las intervenciones en ambos ritmos. Sin embargo, el ritmo influenció el tipo de experiencia emocional que los pacientes

  14. Características sociodemográficas, bienestar subjetivo y homofobia en una muestra de hombres gay en tres ciudades chilenas

    Directory of Open Access Journals (Sweden)

    Jaime Barrientos-Delgado

    2014-06-01

    Full Text Available Este artículo describe y caracteriza sociodemográficamente a una muestra de hombres gay en tres ciudades de Chile. Además, describe sus niveles de homofobia y bienestar subjetivo. Mediante un muestreo en cadena tipo bola de nieve se encuestó a 325 hombres que se autodefinieron como gay. Entre los principales hallazgos se encontró altos niveles de discriminación y victimización percibida. Además en comparación con estudios similares efectuados en el país, los encuestados presentan niveles mayores de bienestar social. La edad de los encuestados aporta diferencias para los niveles de bienestar social y no para las otras medidas. También, las personas con estudios superiores reportan mayores niveles de victimización y un mayor impacto vital de las situaciones de discriminación. Asimismo, si bien las personas que residen en Santiago reportan un mayor impacto relativo de los hechos de agresión, presentan mejores niveles de bienestar social y felicidad en comparación a las personas que viven en otras regiones.

  15. Sacrificio y negociación. Algunos obstáculos subjetivos a las conquistas feministas // Sacrifice and negotiation: some subjective obstacles to the feminist conquest

    Directory of Open Access Journals (Sweden)

    Mario Elkin Ramírez

    2012-06-01

    Full Text Available Algunas mujeres feministas escuchadas en consulta, se encuentran con que hay un obstáculo subjetivo para ejercer los derechos que han conquistado, una investigación al respecto y publicada como libro: Feminidades, sacrificio y negociación en el tiempo de los derechos revela que más allá de los condicionamientos culturales del patriarcado, estas mujeres deben resolver un asunto con su superyó femenino para salir de este impasse. El presente artículo es una reflexión-síntesis de dicha investigación. // Some feminist women seen in consultation, find a subjective obstacles to the feminism conquest; one research about that matter and published as the book: Femininities, sacrifice and negotiation in the time of rights reveals that beyond the cultural conditioning of the patriarchy, these women have to solve an issue with their feminine superego to overcome this impasse. This article is a reflection-synthesis of such research.

  16. Decrease in Self-Reported Tanning Frequency among Utah Teens following the Passage of Utah Senate Bill 41: An Analysis of the Effects of Youth-Access Restriction Laws on Tanning Behaviors

    Directory of Open Access Journals (Sweden)

    Rebecca G. Simmons

    2014-01-01

    Full Text Available Introduction. Adolescent use of indoor tanning facilities is associated with an increased risk in later development of melanoma skin cancers. States that have imposed age restrictions on access to indoor tanning generally show lower self-reported rates of indoor tanning than states with no restrictions, but currently no studies have assessed indoor tanning use before and after such restrictions. Methods. In 2013, we compared self-reported indoor tanning data collected in the Prevention Needs Assessment (PNA survey in 2011 to PNA 2013 data. We also assessed predictors of continued tanning after passage of the bill. Results. Prior to the passage of Senate Bill 41, 12% of students reported at least one incident of indoor tanning in the past 12 months. After passage, only 7% of students reported indoor tanning in the past 12 months (P < 0.0001. Students who continued indoor tanning were more likely to be older and female and to engage in other risk behaviors, including smoking and alcohol use. Lower parental education levels were also associated with continued tanning. Conclusion. Indoor tanning restrictions showed beneficial impact on tanning rates in adolescents in Utah. Stricter restrictions may show even greater impact than restrictions that allow for parental waivers. Stronger enforcement of bans is needed to further reduce youth access.

  17. 40 CFR 425.20 - Applicability; description of the hair save, chrome tan, retan-wet finish subcategory.

    Science.gov (United States)

    2010-07-01

    ... save, chrome tan, retan-wet finish subcategory. 425.20 Section 425.20 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY Hair Save, Chrome Tan, Retan-Wet Finish Subcategory § 425.20...

  18. 40 CFR 425.10 - Applicability; description of the hair pulp, chrome tan, retan-wet finishing subcategory.

    Science.gov (United States)

    2010-07-01

    ... pulp, chrome tan, retan-wet finishing subcategory. 425.10 Section 425.10 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY Hair Pulp, Chrome Tan, Retan-Wet Finish Subcategory § 425.10...

  19. Predictors of Sun-Related Behaviors among Young Women: Comparisons between Outdoor Tanners, Fake Tanners, and Tan Avoiders

    Science.gov (United States)

    Day, Ashley K.; Oxlad, Melissa; Roberts, Rachel M.

    2013-01-01

    Objective: Skin cancer incidence continues to rise as a tanned appearance remains desirable, particularly among young women. Fake tanning provides a tanned appearance without exposure to ultraviolet radiation. In order to advance our understanding of the factors that contribute to long-term behavior change, this study explores determinants…

  20. The potential carcinogenic risk of tanning beds: clinical guidelines and patient safety advice

    International Nuclear Information System (INIS)

    In 2009, the WHO listed ultraviolet (UV) radiation as a group 1 carcinogen. In spite of this, each year, millions of people tan indoor in Western countries. The aim of this review is to summarize evidence of tanning bed carcinogenesis and to present guidelines for use of tanning beds and patient safety advice. A narrative review of the literature was conducted based on both PubMed and Medline searches and on literature review of the retrieved papers. Use of indoor tanning beds represents a significant and avoidable risk factor for the development of both melanoma and nonmelanoma skin cancers. Frequent tanners are more often adolescent females. Tanning beds have additional potential adverse effects such as burns, solar skin damage, infection, and possibly also addictive behavior. The effort in preventing UV light-induced carcinogenesis should currently be aimed at developing new strategies for public health information. Tanning beds are one preventable source of UV radiation. In the majority of people solar UV radiation continues to be the major factor and therefore anti-tanning campaigns must always include sunbathers

  1. A narrative review of the potential for self-tanning products to substitute for solaria use among people seeking a tanned appearance.

    Science.gov (United States)

    Paul, Christine L; Bryant, Jamie; Turon, Heidi; Brozek, Irena; Noble, Natasha; Zucca, Alison

    2014-01-01

    Skin cancers including melanoma and non-melanoma skin cancers are a high-cost and largely preventable form of cancer. While limiting exposure to solar ultraviolet (UV) light via outdoor activities is a focus of public health efforts, indoor UV exposure via solaria or 'tanning booths' has also become a cause for concern. In recent decades the availability of less harmful non-UV self-tanning products such as sprays and lotions has increased. This review explores (i) the available data regarding the prevalence and behavioural factors associated with use of solaria and self-tanning products and (ii) data that may shed light on the likelihood of solaria users substituting self-tanning products as a less harmful alternative to solaria exposure. While there are insufficient data on which to draw a firm conclusion about the potential for substitution, it appears unlikely that most solaria users would readily substitute self-tanning products in place of solaria exposure. Public health advocates may need to consider whether a robust research study of the cost-effectiveness of encouraging substitutional use of self-tanners is desirable, or whether efforts to severely restrict access to solaria may be a better approach. PMID:24372781

  2. Optimization of two-low salt chrome tanning processes without float

    OpenAIRE

    Morera Prat, Josep Maria; Bacardit Dalmases, Anna; Ollé Otero, Lluís; Costa, Jose; Banaszak, S.

    2007-01-01

    The aim of this study was to develop at pilot plant level two systems of pickle-tanning that would reduce both the amount of waste water and its content in chrome and chlorides while obtaining leathers that are commercially acceptable. In the first one, the effect of the variation of the final tanning temperature as well as the system of adding the basificant in the formulation of a chrome tanning without float were studied. A 87 percent reduction of the residual float was obtained with this ...

  3. The Global TanDEM-X Digital Elevation Model and the Terrestrial Impact Crater Record

    OpenAIRE

    Gottwald, Manfred; Fritz, Thomas; Breit, Helko; Schättler, Birgit; Harris, Alan

    2016-01-01

    The German TanDEM-X mission produced a new DEM with unprecedented accuracy. From December 2010 to March 2015 the two X-band radar satellites TerraSAR-X and TanDEM-X have been operated in close formation as a single-pass SAR interferometer. The data acquired in bistatic mode were processed to yield a global DEM with an independent pixel spacing of 12 m and an absolute height error of < 10 m. We used this DEM to generate a TanDEM-X sample of more than 120 confirmed impact structures, all ma...

  4. Recycling of Chrome Tanned Leather Dust in Acrylonitrile Butadiene Rubber

    Science.gov (United States)

    El-Sabbagh, Salwa H.; Mohamed, Ola A.

    2010-06-01

    Concerns on environmental waste problem caused by chrome tanned leather wastes in huge amount have caused an increasing interest in developing this wastes in many composite formation. This leather dust was used as filler in acrylonitrile butadiene rubber (NBR) before treatment and after treatment with ammonia solution and sod. formate. Different formulations of NBR/ leather dust (untreated-treated with ammonia solution—treated with sod. formate) composites are prepared. The formed composite exhibit a considerable improvement in some of their properties such as rheometric characteristics especially with composites loaded with treated leather dust. Tensile strength, modulus at 100% elongation, hardness and youngs modulus were improved then by further loading start to be steady or decrease. Cross linking density in toluene were increased by incorporation of leather dust treated or untreated resulting in decreases in equilibrium swelling. Distinct increase in the ageing coefficient of both treated and untreated leather with drop in NBR vulcanizates without leather dust. Addition of leather dust treated or untreated exhibit better thermal stability.

  5. Effect Of Gamma Rays in the Tanning of Hides

    International Nuclear Information System (INIS)

    Organic ions can be oxidized by γ-rays in the presence of water and oxygen. It is also possible for reduction to take place. Such reductions produce a high yield in the presence of organic material. Solutions of chromium (VI) salts are reduced in such media to chromium (III) salts, which are well known as tanning materials. Solutions of chromium (III) salts are obtained in an enclosed system of hide, water and chromate or. bichromate salts by radiation-induced reduction. The chromium (III) salts are absorbed by the hide. The experiments described were made on calf hides. The pickled pelt was impregnated with a solution of potassium bichromate, sealed in a polyethylene bag and exposed to γ-rays. After treatment it was tested to determine whether the material had the characteristics of leather. It was found that a γ-ray dosage of 5 Mrad is required to turn hide into leather. The shrinkage temperature of the leather was about 80°C. Physical tests on the leather showed that the y-ray dosage should not be more than 10 Mrad. It is possible to combine the new treatment with retanning. (author)

  6. Mildew prevention by radiation for tanned leather 'wet blue'

    International Nuclear Information System (INIS)

    For the chrome-tanned pig skin 'Wet Blue', it was attempted to decide the dose range for preventing mildews by gamma-ray and electron beam. With gamma-ray and 1.5 MV electron beam, in the case of the storage at 20degC and the chrome addition of 2%, it was regarded as 8 kGy, and in the case of the storage at 20degC and the chrome addition of 6%, it was regarded as 6 kGy with 1.5 MV electron beam. In this fiscal year, for the purpose of limiting the dose range for mildew prevention further, a series of the tests was performed. The preparation of samples and the observation of appearance during the storage were carried out by Metropolitan Leather Technology Center, and the irradiation and the measurement of dose were performed by Tokyo Metropolitan Isotope Research Center. The results obtained in 1989 are reported. The preparation of the samples is explained. Co-60 gamma-ray of 2∼8 kGy and the electron beam of 2∼8 kGy from a van de Graaff accelerator were irradiated. Moreover, it is desirable to carry out the reproducibility test on the samples of other production lots. (K.I.)

  7. Treatment of hexavalent chromium Cr (VI) in tanning effluent

    International Nuclear Information System (INIS)

    Most common chemical used in chrome tanning is basic chromium sulphate (BCS). Manufacturing of BCS involves many steps producing liquid waste. Waste generated at every stage contains Cr (VI), which must be reduced to Cr (III) before being disposed to the environment. Different methods were studied for the reduction of toxic Cr (III). Pickle liquor (waste of electroplating industry) can also be used for the reduction of hexavalent chromium Cr (vi) along with other reducing materials / chemicals. In an electroplating process metal is treated with HCl or H/sub 2/SO/sub 4/ to remove scales and rust, the pickled items are then washed with water, washing contains FeCl/sub 2/ or fees/sub 4/ respectively called pickle liquor. During waste treatment pH adjustment to 6.0 - 9.0 and settling the sludge, is discharged to the lagoon. The sludge obtained is dried and disposed off in landfills. Other reducing agents like sodium bisulphite and sulfur dioxide were also studied, but pickle liquor was found to be more effective and economical. (author)

  8. "Biz Engel Tanımayız" Projesi

    OpenAIRE

    Tekin, Demet; Madan, Rabia

    2015-01-01

    İnsanların engellilere karşı olan önyargı ve tutumlarından dolayı, engellilerin toplumsal yaşama katılmakta zorlandıkları bilinmektedir. Bu tutum ve davranışları eğitimle değiştirmek mümkündür. Engelli bireylerin toplumsallaşma süreci, günlük yaşam becerileri ve temel sağlık kuralları eğitimi ile desteklenmelidir. Bu düşünceden yola çıkılarak “Biz Engel Tanımayız” Projesi hazırlanmıştır.AMAÇ: Projenin amacı; engelli çocukların yaşamlarını daha kolay devam ettirebilmeleri için temel sağlık bil...

  9. Emily Ussher and The Trail of the Black & Tans Emily Ussher et La Piste des Black & Tans

    Directory of Open Access Journals (Sweden)

    Joanna Wydenbach

    2009-10-01

    Full Text Available Cet article étudie les relations historiques et littéraires pendant la guerre anglo-irlandaise à travers la publication de The Trail of the Black and Tans par “The Hurler on the Ditch”, pseudonyme de Emily Usher, propriétaire de Cappagh House dans le Comté de Waterford. The Trail of the Black and Tans est l’histoire d’une famille de fermiers catholiques et nationalistes pendant la guerre anglo-irlandaise. Le roman fut publié quelques mois après l’arrêt des hostilités. Cet article retrace l’histoire de l’auteur et de l’éditeur du roman, la Talbot Press de Dublin, et de leurs intentions respectives concernant le destin du livre. Le roman est replacé dans le contexte du lectorat visé par le roman, celui des Anglais non-conformistes, auxquels il est fait référence dans la dédicace, et de son lectorat réel en Irlande. L’article se termine par une étude de la réception du roman en Irlande et en Angleterre. Même si le roman fut accueilli favorablement sur place par les habitants du Comté de Waterford, et dans les journaux nationaux, le livre fut retiré des bibliothèques dans le Comté de Cork et boycotté par la presse britannique lors de sa parution en 1921. Cet article vise à faire découvrir un aspect ignoré de l’histoire de l’édition en Irlande, tout en donnant un aperçu de la situation dans le sud-est de l’Irlande pendant les années 1920. Il montre aussi qu’en redonnant leur place aux romancières irlandaises oubliées du début du vingtième siècle, une compréhension plus approfondie de l’Irlande devient possible.

  10. 无铬鞣剂研究新进展%The New Advances in Chromium-Free Tanning Agents Research

    Institute of Scientific and Technical Information of China (English)

    李峰; 何青; 但年华; 王康建; 但卫华

    2012-01-01

    Commonly used Chromium-free tanning agent includes Chromium-free multi-metal salts, aldehydes tanning agent, synthetic organic tanning agent, vegetable tanning agent, and so on. The research reviewed the status, mechanism, and specialty of these tanning agents, and emphatically explained the characteristics of chromium-free multi-metal complex salt, oxazolidine, organic synthetic tanning agent, late-model aldehydes acid tanning agents.%常用无铬鞣剂包括:无铬金属鞣剂、醛鞣剂、合成有机鞣剂、植物鞣剂等。扼要综述了这些鞣剂的研究现状、鞣制机理以及各鞣制特点,重点介绍了锆-铝-钛多金属配合鞣剂、噁唑烷鞣剂与新型醛酸鞣剂。

  11. Research Progress of Non-metal Tanning Technology%非金属鞣研究进展

    Institute of Scientific and Technical Information of China (English)

    周玉玲; 贺丽蓉; 石佳博; 林炜

    2011-01-01

    调研了近年制革领域研究和关注较多的植物鞣剂、醛鞣剂、噁唑烷鞣剂、有机膦鞣剂、纳米鞣剂等非金属鞣剂,对它们各自的鞣制机理、鞣革特点及研究进展情况进行了综述.%Non - metal tanning agents such as vegetable tannins, aldehyde tanning agents, oxazolidine tanning agents, organic phosphonium tanning agents, nano -tanning agents, are reviewed based on their tanning mechanisms, tanning effects, and ongoing investigations.It will be helpful for the people doing research in the related fields.

  12. BIOLOGICAL TREATMENT, EFFLUENT REUSE, AND SLUDGE HANDLING FOR THE SIDE LEATHER TANNING INDUSTRY

    Science.gov (United States)

    An evaluation of the treatability of unsegregated, unequalized, and unneutralized wastewaters from a side-leather tanning industry utilizing the hair pulping process by primary and secondary biological and gravity separation in clarifier-thickeners, whereas the secondary treatmen...

  13. OPTIMIZATION OF COMPLEX MINERAL TANNING MATERIAL ON THE BASIS OF ALUMINIUM AND ZIRCONIUM

    Directory of Open Access Journals (Sweden)

    K. Toguzbaev

    2014-10-01

    Full Text Available Influence of acetate ion on stability of alumina-zirconium tanning to alkalization has been investigated in the paper. The investigation results have shown that at the ratio of Al3+:Zr4+:CH3COO = 1:1:1 it  is  possible  to  prepare  a  solution  of  masking   alumina-zirconium  tanning  (АЦД-М   with  high stability and low consumption of aluminum sulfate. The paper reveals that masking of alumina-zirconium tanning by natrium acetate allows to increase stability to alkalization and improve tanning properties. It has been established that for a stable increase of fatty matter viscosity and improvement of  leather water-resistant properties it is necessary to use water-insoluble aluminum and zirconium soaps of carboxylic acids.

  14. DNA damage and radiosensitizers: M. luteus sensitive sites for misonidazole-TAN combination

    International Nuclear Information System (INIS)

    It has been shown previously that TAN does not enhance production of single-strand breaks (SSB) in DNA of Chinese hamster cells irradiated under hypoxia. In contrast, misonidazole does enhance the yield of SSB, but this SSB enhancement by misonidazole is reduced if TAN is present with misonidazole during irradiation. It was also shown that each of these sensitizers enhances base/sugar damage, measured with the aid of bacterial enzymes (MLS). The results presented here for MLS damage in mammalian cells irradiated in the presence of the misonidazole-TAN combination indicate that the two drugs act independently in enhancing MLS damage, and hence they interact with different types of lesions to produce base/sugar damage. It is proposed that the protection by TAN in mammalian cells observed at the survival level is due to repair of some of that type of damage which would otherwise become a misonidazole-enhanced SSB

  15. Electronic structure, Compton profiles and optical properties of TaC and TaN

    Energy Technology Data Exchange (ETDEWEB)

    Dashora, Alpa [Department of Physics, M L Sukhadia University, Udaipur 313002 (Rajasthan) (India); Ahuja, B.L., E-mail: blahuja@yahoo.co [Department of Physics, M L Sukhadia University, Udaipur 313002 (Rajasthan) (India)

    2010-11-15

    Isotropic Compton profiles of TaC and TaN have been measured for the first time, at an intermediate resolution, using 662 keV {gamma}-radiation. Energy bands, density of states and Fermi surface topology of TaC and TaN have been computed using linear combination of atomic orbitals with density functional theory and full potential linearised augmented plane wave method. Both band structure calculations predict the metallic character of TaC and TaN. The electron momentum densities calculated using various approaches of density functional theory are compared with the present measurements. On the basis of Mulliken's population, it is also seen that TaC has more covalent bonding than TaN. The optical properties computed using full potential linearised augmented plane wave method are explained in terms of intraband transitions.

  16. Tara (Caesalpinia spinosa): The sustainable source of tannins for innovative tanning processes

    OpenAIRE

    Castell, Joan Carles; Sorolla Casellas, Sílvia; Jorba, Montse; Aribau, Joaquim; Bacardit Dalmases, Anna; Ollé Otero, Lluís

    2011-01-01

    This study considers the fruit of the tara tree as a sustainable source for tanning agents and proposes alternatives to the commercial mineral salts and vegetable extracts to comply with environment and social concerns. Tara tannins have been used in retanning formulas in leather processing and its properties are well known. This work aims to optimize formulations using tara as a pre-tanning agent. Combinations with a naphthalene sulphonic syntan are used to obtain an innovative wet-white rec...

  17. Toward a Library Synthesis of the Natural Dipeptide Antibiotic TAN 1057 A,B

    OpenAIRE

    Jochen Krüger; Nuria Aguilar

    2002-01-01

    The natural dipeptide antibiotic TAN 1057 A,B represents a promising new antibiotic entity. In this communication we report a novel approach for the synthesis of TAN 1057 A,B analogs bearing variations in the β-arginine side chain. This approach involves a combination of liquid and solid phase methods and allows for a library synthesis of analogs of the natural product.

  18. A Review of the Use of Tanning Beds as a Dermatological Treatment

    OpenAIRE

    Radack, Kyle P.; Farhangian, Michael E.; Anderson, Kathryn L.; Feldman, Steven R.

    2015-01-01

    Introduction In-office phototherapy is an effective treatment for many dermatologic conditions, however, many patients are unable to adhere to the rigorous travel and time commitments sometimes needed. Tanning bed facilities are nearly ubiquitous in modern society and could represent a more convenient means to obtain ultraviolet (UV) exposure when office phototherapy is not feasible. The purpose of this study was to review available evidence on the use of tanning facilities as a treatment for...

  19. Bistatic System Calibration in TanDEM-X to Ensure the Global Digital Elevation Model Quality

    OpenAIRE

    Hueso Gonzalez, Jaime; Walter Antony, John; Bachmann, Markus; Krieger, Gerhard; Zink, Manfred; Schrank, Dirk; Schwerdt, Marco

    2012-01-01

    TanDEM-X is an operational satellite mission with the goal of generating a high quality global digital elevation model (DEM) based on synthetic aperture radar (SAR) interferometry in X-band. In order to ensure the quality of the DEM, the differential range measurements and knowledge of the interferometric baseline have to be extremely accurate. In this paper, the bistatic system calibration strategy implemented in TanDEM-X to achieve the desired DEM quality will be described, focusing on the ...

  20. Biotechnological sequestering of chromium(III) From Post-Tanning Effluents: First Results

    OpenAIRE

    Lalueza Baro, Joana; Rius Carrasco, Antoni; Puig Vidal, Rita; Martí Badia, Maria Elena; Martí Bernadas, Joan Francesc; Rodriguez, N.; Amils, Ricardo

    2010-01-01

    Heavy metals in waste waters and sludge may cause significant environmental problems, and it is known that conventional recovery technologies cannot always achieve satisfactory treatment. For example, they are inappropiate to completely recover the chromium in the case of waste waters from the tanning process. Chromium can be recovered (by precipitation)from effluents that contain high concentrations of this metal. However, effluents from the later stages in present day tanning process often ...

  1. Astragalus friederikeanus Kit Tan & Zeitlinger (Fabaceae), a new species from south Anatolia, Turkey

    DEFF Research Database (Denmark)

    Tan, Kit; Zeitlinger, Jörg

    2007-01-01

    A new species from south Anatolia, Turkey, Astragalus friederikeanus Kit Tan & Zeitlinger (Fabaceae), is described and illustrated. The diagnostic morphological characters separating it from other members of sect. Onobrychium Boiss. are listed.......A new species from south Anatolia, Turkey, Astragalus friederikeanus Kit Tan & Zeitlinger (Fabaceae), is described and illustrated. The diagnostic morphological characters separating it from other members of sect. Onobrychium Boiss. are listed....

  2. Effect of deposition and annealing temperature on mechanical properties of TaN film

    International Nuclear Information System (INIS)

    Tantalum nitride films (TaN) were synthesized by microwave ECR-DC sputtering. The effects of deposition and annealing temperature on mechanical properties of TaN films were investigated. Cross-section pattern, microstructure and binding energy of the films were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. Mechanical properties were evaluated using nano-indentation and scratch tester. The results showed that the maximal hardness value of approximately 40 GPa was deposited in the TaN sample at 573 K. While the preparation temperature decreased, the hardness, modulus and adhesion of TaN film also decreased. Hardness and modulus also decreased with the increase in annealing temperature. Meanwhile the adhesion strength was also sensitive to the annealing temperature, with a maximum adhesion strength of 40 N measured in the TaN film annealed at 448 K. The results demonstrated that a desirable mechanical property of TaN films deposited by DC reactive magnetron sputtering can be obtained by controlling the deposition and annealing temperature.

  3. Comparison of advertising strategies between the indoor tanning and tobacco industries.

    Science.gov (United States)

    Greenman, Jennifer; Jones, David A

    2010-04-01

    The indoor tanning industry is large and continues to grow, with 2007 domestic sales in excess of $5 billion. Advertising is central to shaping the consumer's perception of indoor tanning as well as driving industry demand. This article aims to identify key drivers of consumer appeal by comparing tanning advertising strategies to those used by tobacco marketers. Tobacco advertising was selected as a reference framework because it is both well documented and designed to promote a product with known health hazards. Two thousand advertisements from 4 large tobacco advertisement databases were analyzed for type of advertisement strategy used, and 4 advertising method categories were devised to incorporate the maximum number of advertisements reviewed. Subsequently, contemporary tanning advertisements were collected from industry magazines and salon websites and evaluated relative to the identified strategy profiles. Both industries have relied on similar advertising strategies, including mitigating health concerns, appealing to a sense of social acceptance, emphasizing psychotropic effects, and targeting specific population segments. This examination is a small observational study, which was conducted without rigorous statistical analysis, and which is limited both by the number of advertisements and by advertising strategies examined. Given the strong parallels between tobacco and tanning advertising methodologies, further consumer education and investigation into the public health risks of indoor tanning is needed. PMID:20138395

  4. Comparative statistical analysis of chrome and vegetable tanning effluents and their effects on related soil

    Energy Technology Data Exchange (ETDEWEB)

    Tariq, Saadia R. [Department of Chemistry, Lahore College for Women University, Lahore (Pakistan); Shah, Munir H., E-mail: munir_qau@yahoo.com [Department of Chemistry, Quaid-i-Azam University, Islamabad 45320 (Pakistan); Shaheen, Nazia [Department of Chemistry, Quaid-i-Azam University, Islamabad 45320 (Pakistan)

    2009-09-30

    Two tanning units of Pakistan, namely, Kasur and Mian Channun were investigated with respect to the tanning processes (chrome and vegetable, respectively) and the effects of the tanning agents on the quality of soil in vicinity of tanneries were evaluated. The effluent and soil samples from 16 tanneries each of Kasur and Mian Channun were collected. The levels of selected metals (Na, K, Ca, Mg, Fe, Cr, Mn, Co, Cd, Ni, Pb and Zn) were determined by using flame atomic absorption spectrophotometer under optimum analytical conditions. The data thus obtained were subjected to univariate and multivariate statistical analyses. Most of the metals exhibited considerably higher concentrations in the effluents and soils of Kasur compared with those of Mian Channun. It was observed that the soil of Kasur was highly contaminated by Na, K, Ca and Mg emanating from various processes of leather manufacture. Furthermore, the levels of Cr were also present at much enhanced levels than its background concentration due to the adoption of chrome tanning. The levels of Cr determined in soil samples collected from the vicinity of Mian Channun tanneries were almost comparable to the background levels. The soil of this city was found to have contaminated only by the metals originating from pre-tanning processes. The apportionment of selected metals in the effluent and soil samples was determined by a multivariate cluster analysis, which revealed significant differences in chrome and vegetable tanning processes.

  5. Removal of Chromium from Waste Water of Tanning Industry Using Bentonite

    International Nuclear Information System (INIS)

    Tanning industry is considered as one of the oldest industries in the world, which produces solid and liquid wastes, where the Chromium-containing liquid wastes are considered to be as the main liquid pollutant to the environment. In this research, a new method is applied to remove the chromium from the industrial water wastes, which are produced by tanning industry using the Aleppo Bentonite.The experiments on laboratory- prepared samples and collected samples from some tanning factories in Damascus have proved that chromium removal from tanning waste water is very effective for solution of 85-98 %. Moreover, the optimal conditions for the treatment process of tanning waste water by Aleppo Bentonite have determined and found to be (pH=4, Bentonite concentration = 20 g l-1 when chromium concentration is 0.8 g l-1 , solution temperature = 30 degree centigrade, and Bentonite particle size < 90 μm). However, the proposed method can be considered to be an environmental solution for the treatment of tanning industrial wastes in Syria. (author)

  6. Comparative statistical analysis of chrome and vegetable tanning effluents and their effects on related soil

    International Nuclear Information System (INIS)

    Two tanning units of Pakistan, namely, Kasur and Mian Channun were investigated with respect to the tanning processes (chrome and vegetable, respectively) and the effects of the tanning agents on the quality of soil in vicinity of tanneries were evaluated. The effluent and soil samples from 16 tanneries each of Kasur and Mian Channun were collected. The levels of selected metals (Na, K, Ca, Mg, Fe, Cr, Mn, Co, Cd, Ni, Pb and Zn) were determined by using flame atomic absorption spectrophotometer under optimum analytical conditions. The data thus obtained were subjected to univariate and multivariate statistical analyses. Most of the metals exhibited considerably higher concentrations in the effluents and soils of Kasur compared with those of Mian Channun. It was observed that the soil of Kasur was highly contaminated by Na, K, Ca and Mg emanating from various processes of leather manufacture. Furthermore, the levels of Cr were also present at much enhanced levels than its background concentration due to the adoption of chrome tanning. The levels of Cr determined in soil samples collected from the vicinity of Mian Channun tanneries were almost comparable to the background levels. The soil of this city was found to have contaminated only by the metals originating from pre-tanning processes. The apportionment of selected metals in the effluent and soil samples was determined by a multivariate cluster analysis, which revealed significant differences in chrome and vegetable tanning processes.

  7. La construcción simbólica de la articulación vida-muerte en colectivos juveniles urbanos: lo subjetivo y las mediaciones del sentido

    OpenAIRE

    Salvador Salazar Gutiérrez

    2015-01-01

    El artículo plantea una estrategia metodológica, que permita colocar el eje de atención en la construcción simbólica que adquiere la vida y muerte en jóvenes integrantes de colectivos, en el contexto actual de la comunidad fronteriza de Ciudad Juárez. La apuesta metodológica parte por lo subjetivo y lo discursivo, teniendo como recurso de mediación la producción de sentido que el actor social genera, siempre situado desde diversas posiciones socioculturales que condicionan sus prácticas y rel...

  8. Adaptação académica, apoio social e bem-estar subjetivo dos estudantes do ensino superior: um estudo nas residências universitárias

    OpenAIRE

    Dinis, Ana Cristina Alves Rodrigues

    2013-01-01

    O Apoio Social (instrumental, emocional, informativo e avaliativo) abrange recursos, sistemas de apoio e avaliação por parte do indivíduo que recebe a ajuda. Quando eficaz e de qualidade, desenvolve a identidade pessoal e favorece o bem-estar e sucesso académico. Desta forma é de grande interesse compreender, avaliar e analisar os níveis de adaptação, suporte social e bem-estar subjetivo dos estudantes do ensino superior, em particular, os alojados em residências universitárias...

  9. Green chemistry approaches to leather tanning process for making chrome-free leather by unnatural amino acids.

    Science.gov (United States)

    Krishnamoorthy, G; Sadulla, S; Sehgal, P K; Mandal, Asit Baran

    2012-05-15

    In the present study, green and sustainable method or eco-friendly approaches to tanning process based on unnatural D-amino acids (D-AA)-aldehyde (Ald) as a substitute for chrome-free tanning has been attempted. The distribution of optically active D-AA in tanned leather, the hydrothermal stability, the mechanical properties and resistance to collagenolytic activity of tanned leather, the evaluation of eco-friendly characteristics were investigated. Scanning electron microscopic (SEM) and Atomic force microscopic (AFM) analyses indicate the surface morphology and roughness, respectively, of the tanned leather collagen matrix. Shrinkage and Differential scanning calorimetric (DSC) analyses shows that the shrinkage temperature (T(s)) and denaturation temperature (T(d)) of tanned leather are related to the content of D-AA+Ald present in the leather matrix. It has been found that the T(s) of D-AA tanned leather is more than that of Ald tanned leather and also more or less equal to chrome tanned leather. Environmental impact assessment (EIA) shows that the developed process results in significant reduction in total solids content (TSC) and improves better biodegradability of organic compound present in the effluent compared to chrome tanning. PMID:22421341

  10. Green chemistry approaches to leather tanning process for making chrome-free leather by unnatural amino acids

    Energy Technology Data Exchange (ETDEWEB)

    Krishnamoorthy, G.; Sadulla, S.; Sehgal, P.K. [Central Leather Research Institute, Council of Scientific and Industrial Research (CSIR), Adyar, Chennai 600 020 (India); Mandal, Asit Baran, E-mail: abmandal@hotmail.com [Central Leather Research Institute, Council of Scientific and Industrial Research (CSIR), Adyar, Chennai 600 020 (India)

    2012-05-15

    Highlights: Black-Right-Pointing-Pointer Unnatural D-AA assisted tanned leathers found soft and full possessing tight grain. Black-Right-Pointing-Pointer Increased hydrothermal stability of collagen via intra and inter molecular crosslink. Black-Right-Pointing-Pointer D-Ly+Ald tanned leathers revealed a properly oriented with well aligned structure. Black-Right-Pointing-Pointer D-AA in collagen creates new topologies inaccessible to homo chiral molecules. Black-Right-Pointing-Pointer Improves conventional tanning process, and reduce the total solid and liquid wastes. - Abstract: In the present study, green and sustainable method or eco-friendly approaches to tanning process based on unnatural D-amino acids (D-AA)-aldehyde (Ald) as a substitute for chrome-free tanning has been attempted. The distribution of optically active D-AA in tanned leather, the hydrothermal stability, the mechanical properties and resistance to collagenolytic activity of tanned leather, the evaluation of eco-friendly characteristics were investigated. Scanning electron microscopic (SEM) and Atomic force microscopic (AFM) analyses indicate the surface morphology and roughness, respectively, of the tanned leather collagen matrix. Shrinkage and Differential scanning calorimetric (DSC) analyses shows that the shrinkage temperature (T{sub s}) and denaturation temperature (T{sub d}) of tanned leather are related to the content of D-AA+Ald present in the leather matrix. It has been found that the T{sub s} of D-AA tanned leather is more than that of Ald tanned leather and also more or less equal to chrome tanned leather. Environmental impact assessment (EIA) shows that the developed process results in significant reduction in total solids content (TSC) and improves better biodegradability of organic compound present in the effluent compared to chrome tanning.

  11. Green chemistry approaches to leather tanning process for making chrome-free leather by unnatural amino acids

    International Nuclear Information System (INIS)

    Highlights: ► Unnatural D-AA assisted tanned leathers found soft and full possessing tight grain. ► Increased hydrothermal stability of collagen via intra and inter molecular crosslink. ► D-Ly+Ald tanned leathers revealed a properly oriented with well aligned structure. ► D-AA in collagen creates new topologies inaccessible to homo chiral molecules. ► Improves conventional tanning process, and reduce the total solid and liquid wastes. - Abstract: In the present study, green and sustainable method or eco-friendly approaches to tanning process based on unnatural D-amino acids (D-AA)-aldehyde (Ald) as a substitute for chrome-free tanning has been attempted. The distribution of optically active D-AA in tanned leather, the hydrothermal stability, the mechanical properties and resistance to collagenolytic activity of tanned leather, the evaluation of eco-friendly characteristics were investigated. Scanning electron microscopic (SEM) and Atomic force microscopic (AFM) analyses indicate the surface morphology and roughness, respectively, of the tanned leather collagen matrix. Shrinkage and Differential scanning calorimetric (DSC) analyses shows that the shrinkage temperature (Ts) and denaturation temperature (Td) of tanned leather are related to the content of D-AA+Ald present in the leather matrix. It has been found that the Ts of D-AA tanned leather is more than that of Ald tanned leather and also more or less equal to chrome tanned leather. Environmental impact assessment (EIA) shows that the developed process results in significant reduction in total solids content (TSC) and improves better biodegradability of organic compound present in the effluent compared to chrome tanning.

  12. Sueños y pesadillas: efectos subjetivos de la Guerra Civil española a través de cierta mirada cinematográfica

    Directory of Open Access Journals (Sweden)

    Marta Marín-Dòmine

    2006-09-01

    Full Text Available Le passé, surtout quand il est attaché à la violence, a des conséquences évidentes dans la formation de la subjectivité des générations postérieures à l’événement. Dans cet article on analyse les effets subjectifs engendrés par la Guerre Civile espagnole à partir de deux films : El mar (2000 d’Agustí Villaronga et En la ciudad sin límites (2001 d’Antonio Hernández. Dans l’analyse on verra que le passé peut se vivre à partir de la fascination que l’événement exerce sur le sujet ou à partir d’une narration que le sujet assume comme la sienne, en plaçant le passé en relation directe avec le présent. Bref, le passé comme jouissance ou le passé comme création.El pasado, especialmente cuando está teñido de violencia, tiene consecuencias en la subjetividad de las generaciones posteriores al evento. Este artículo analiza los efectos subjetivos ocasionados por la Guerra Civil española a partir del análisis de dos películas: El mar (2000 de Agustí Villaronga y En la ciudad sin límites (2001 de Antonio Hernández. Se verá que el pasado puede ser vivido a partir de la fascinación que el sujeto siente por él, o como narración a partir de la cual el sujeto se siente interpelado y por tanto capaz de entretejer con ella la historia del pasado con el presente. Lo que hay en juego es el goce versus la creación.The violence of a past event has obvious consequences on the formation of the subjectivity of the generations that come after the event itself. This article analyzes the subjective effects of the Spanish Civil War through two films: El mar (2000 by Agustí Villaronga and En la ciudad sin límites (2001 by Antonio Hernández. It will be shown that the past can be either cause of fascination or taken as a narration through which the subject intertwines past and present. We see that what is at stake is Jouissance versus Creation.

  13. Mechanisms of Low-Temperature Nitridation Technology on a TaN Thin Film Resistor for Temperature Sensor Applications

    Science.gov (United States)

    Chen, Huey-Ru; Chen, Ying-Chung; Chang, Ting-Chang; Chang, Kuan-Chang; Tsai, Tsung-Ming; Chu, Tian-Jian; Shih, Chih-Cheng; Chuang, Nai-Chuan; Wang, Kao-Yuan

    2016-06-01

    In this letter, we propose a novel low-temperature nitridation technology on a tantalum nitride (TaN) thin film resistor (TFR) through supercritical carbon dioxide (SCCO2) treatment for temperature sensor applications. We also found that the sensitivity of temperature of the TaN TFR was improved about 10.2 %, which can be demonstrated from measurement of temperature coefficient of resistance (TCR). In order to understand the mechanism of SCCO2 nitridation on the TaN TFR, the carrier conduction mechanism of the device was analyzed through current fitting. The current conduction mechanism of the TaN TFR changes from hopping to a Schottky emission after the low-temperature SCCO2 nitridation treatment. A model of vacancy passivation in TaN grains with nitrogen and by SCCO2 nitridation treatment is eventually proposed to increase the isolation ability in TaN TFR, which causes the transfer of current conduction mechanisms.

  14. Mechanisms of Low-Temperature Nitridation Technology on a TaN Thin Film Resistor for Temperature Sensor Applications.

    Science.gov (United States)

    Chen, Huey-Ru; Chen, Ying-Chung; Chang, Ting-Chang; Chang, Kuan-Chang; Tsai, Tsung-Ming; Chu, Tian-Jian; Shih, Chih-Cheng; Chuang, Nai-Chuan; Wang, Kao-Yuan

    2016-12-01

    In this letter, we propose a novel low-temperature nitridation technology on a tantalum nitride (TaN) thin film resistor (TFR) through supercritical carbon dioxide (SCCO2) treatment for temperature sensor applications. We also found that the sensitivity of temperature of the TaN TFR was improved about 10.2 %, which can be demonstrated from measurement of temperature coefficient of resistance (TCR). In order to understand the mechanism of SCCO2 nitridation on the TaN TFR, the carrier conduction mechanism of the device was analyzed through current fitting. The current conduction mechanism of the TaN TFR changes from hopping to a Schottky emission after the low-temperature SCCO2 nitridation treatment. A model of vacancy passivation in TaN grains with nitrogen and by SCCO2 nitridation treatment is eventually proposed to increase the isolation ability in TaN TFR, which causes the transfer of current conduction mechanisms. PMID:27251325

  15. Development Trend of Green and Eco-friendly Biomass Leather Tanning Agent and its Combination Tanning%生物质皮革鞣剂及其结合鞣应用的发展趋势

    Institute of Scientific and Technical Information of China (English)

    杨文强; 贺亚亚; 邓丽娟

    2015-01-01

    In this paper, the research progress of biomass tanning agents such as amino acids tanning a-gents and plant biomass green tanning agent was reviewed. And their utilization in combination tanning process was also introduced briefly.%综述了氨基酸类鞣剂和植物类鞣剂等生物质类皮革鞣剂的研究进展,简述了生物质鞣剂在结合鞣中的应用。

  16. Supersymmetry Unification Predictions for $m_{top}, V_{cb}$ and $tan{\\beta}$

    CERN Document Server

    Díaz, M A; Valle, José W F; Diaz, Marco A.; Ferrandis, Javier; Valle, Jose W.F.

    2000-01-01

    We study the predictions for M_top, tan(beta) and V_cb in a popular texture ansatze for the fermion mass matrices. We do this both for the Minimal Supersymmetric Standard Model (MSSM) and for the simplest model (MSSM-BRpV) where a bilinear R-Parity violating term is added to the superpotential. We find that taking the experimental values for M_top and V_cb at 99 % C.L. and the GUT relations h_b=h_tau and (V_cb)^2=h_c/h_t within 5 %, the large tan(beta) solution, characteristic in the MSSM with bottom--tau unification, becomes disallowed. In contrast the corresponding allowed region for the MSSM-BRpV is slightly larger. We also find that important modifications occur if we relax the texture conditions at the GUT scale. For example, if the GUT relations are imposed at 40 %, the large tan(beta) branch in the MSSM becomes fully allowed. In addition, in MSSM-BRpV the whole tan(beta)-M_top plane become allowed, finding unification at any value of tan(beta).

  17. Hydrolysis of tanned leather wastes under alkaline, acidic and oxidative conditions

    Directory of Open Access Journals (Sweden)

    Botić Tatjana

    2006-01-01

    Full Text Available Different wastes in large quantities are the outcome or the by-product of processes in the tanning industry. The largest part of solid wastes is collagen based and obtained in the reprocessing steps of tanned and non-tanned products. The quality collagen substance obtained from wastes of the leather industry used as a supporting material in many reprocessing industries. Hydrolysis is the basic step of collagen processing, namely the shortening of its polypeptide chain. The main goal of this investigation was to examine the influence of the following parameters on the extent of collagen hydrolysis: type and quantity of reagent used for hydrolysis temperature of hydrolysis, pH, duration of hydrolysis as well as the dimensions of the "shavings" samples. The change of molar mass during hydrolysis was monitored by UV-spectroscopy. Special attention was paid to the dechroming process of the collagen hydrolysate.

  18. Proposing and evaluating applications for products obtained during chromium chip alkaline hydrolysis produced during leather tanning

    Directory of Open Access Journals (Sweden)

    Andrea Díaz

    2010-04-01

    Full Text Available Some applications for products obtained by chromium chip alkaline hydrolysis produced during leather tanning were evaluated in this work, considering the concept of maximising tanneries’ solid residue reuse for different industrial applications and minimising the environmental impact so produced. When Cr(OH is transformed into Cr (OH(SO it can be used in tanning leather (i.e. as tanning salt. When compared to commercial salts, 2 4 it was determined that it could be applied to mixtures containing this salt, replacing it by up to 40%. Chromium content reduction was evaluated for collagen hydrolyzate by pH control after alkaline hydrolysis of the chips and by applying adsorbent materials such as bentonite, alfalfa and sorghum biomass and activated charcoal, a maximum 55% Cr removal being obtained when the first two adsorbent materials were used.

  19. Eco-leather: Chromium-free Leather Production Using Titanium, Oligomeric Melamine- Formaldehyde Resin, and Resorcinol Tanning Agents and the Properties of the Resulting Leathers

    Directory of Open Access Journals (Sweden)

    Arife Candas ADIGUZEL ZENGIN

    2012-03-01

    Full Text Available The chromium salt tanning system, which is still the most popular leather tanning procedure, is undercontinuous pressure from environmental groups and international regulations. Therefore, for many years,numerous experiments have been carried out on chromium-free leather production. In this study, newlyproduced synthetic and inorganic chemicals were used as tanning and pre-tanning agents as an alternativeto a chromium tanning agent. This new titanium based tanning agent, obtained from processing wastesfrom the industry of nonferrous metals, was used as a main tanning agent. In addition, an oligomericmelamine-formaldehyde resin and resorcinol type pre-polymer were used as pre-tanning agents for theproduction of chromium-free leathers. Physical tests and chemical analysis of the produced chromium-freeleathers gave comparable results to leathers tanned with basic chromium sulphate.

  20. Structure de socle, sismostratigraphie et héritage structural au cours du rifting au niveau de la marge d'Ifni/Tan-Tan (Maroc sud-occidental)

    Science.gov (United States)

    AbouAli, Naïma; Hafid, Mohamad; Chellaï, El Hassane; Nahim, Mohamed; Zizi, Mahmoud

    2005-10-01

    Seismic reflection profiles from the Ifni/Tan-Tan Atlantic margin of southern Morocco, interpreted in the light of well data and field geology from the Western Anti-Atlas, allowed us to establish the seismostratigraphic framework of the syn-rift series and to reveal ( i) a compressional structural style in the pre-Triassic basement similar to that established in the adjacent outcropping onshore basement but with an opposed western vergence, ( ii) the importance of inherited anterior structures in the formation of Triassic-Liassic rift structures and ( iii) an east-west propagation of these rift structures. To cite this article: N. AbouAli et al., C. R. Geoscience 337 (2005).

  1. Chrome-tanned leather shavings as a filler of butadiene-acrylonitrile rubber.

    Science.gov (United States)

    Przepiórkowska, A; Chrońska, K; Zaborski, M

    2007-03-01

    The noxious wastes from the tanning industry such as chrome-tanned leather shavings were used as the only filler of rubber mixes containing carboxylated butadiene-acrylonitrile rubber (XNBR) or butadiene-acrylonitrile rubber (NBR), and a dispersing agent Limanol PEV (Schill & Seilacher). The best form addition of leather powder to the rubber mixes is mixed the waste protein with zinc oxide. The leather powder added to the rubber mixes improves the mechanical properties: tensile strength (T(s)), elongation at break (epsilon(b)) and increase the cross-linking density of carboxylated XNBR and NBR rubber mixes. Satisfactory results of these studies are presented in this work. PMID:16942836

  2. EVIDENCE FOR "UNER TAN SYNDROME" AS A HUMAN MODEL FOR REVERSE EVOLUTION

    OpenAIRE

    Tan, Prof. Dr. Uner

    2006-01-01

    “Uner Tan Syndrome” was further studied in a second family. There was no cerebellar atrophy, except a mild vermial atrophy in MRI scans of the affected individuals. This is not, however, the pathogenesis of the “Uner Tan Syndrome”, since in the first and second families there were bipedal men exhibiting very similar MRI scans. The second family may also be considered a live model for reverse evolution in human beings. The present work provided evidence for a reverse evolution: (i) quadrupedal...

  3. Terrestrial Impact Craters in 3D: The global TanDEM-X Digital Eleveation Model

    OpenAIRE

    Gottwald, Manfred; Fritz, Thomas; Breit, Helko; Schättler, Birgit; Harris, Alan

    2016-01-01

    In the past two decades space-borne sensors have provided us with high-quality elevation data of the solid surfaces of several large bodies of the solar system. For Earth, the German TanDEM-X mission delivers a new digital elevation model (DEM) with unprecedented accuracy. From December 2010 to March 2015 the two X-band radar satellites TerraSAR-X and TanDEM-X have been operated in close formation as a single-pass SAR interferometer. The data acquired in bistatic mode are processed to yield a...

  4. tan\\beta\\ determination from the Higgs boson decay at the International Linear Collider

    CERN Document Server

    Yokoya, Hiroshi

    2014-01-01

    We study the methods and their accuracies for determining tan\\beta\\ in two Higgs doublet models at future lepton colliders. In addition to the previously proposed methods using direct production of additional Higgs bosons, we propose a method using the precision measurement of the decay branching ratio of the standard-model (SM)-like Higgs boson. The method is available if there is a deviation from the SM in the coupling constants of the Higgs boson with the weak gauge bosons. We find that, depending on the type of Yukawa interactions, this method can give the best sensitivity in a wide range of tan\\beta.

  5. La migración de jóvenes zapatistas a Estados Unidos como desplazamiento geográfico, político y subjetivo

    Directory of Open Access Journals (Sweden)

    Alejandra Aquino Moreschi

    2012-04-01

    Full Text Available Abstract: The migration of young Zapatistas to the United States as a geographic, political and subjective displacementThis article analyses how some young Zapa-tistas become international migrants that are put into global circuits of work under a capi-talist regime of flexible accumulation. It is argued that the migration of these young people represents a geographical, political and subjective displacement in which not only are they transported thousands of kilo-metres away from their towns, but they also experience a change in their subjectivities, their future perspectives and their life-time ambitions in comparison to previous genera-tions. It is shown that the migratory experi-ence of young Zapatistas is marked by ten-sion between periods of being practically unable to move to certain markets of work and certain geographic regions – particularly in agricultural California – and periods when, in contrast, they cannot establish themselves for any length of time in the same place, or continue in the same niche of work. In other words, their experiences have oscillated between periods in which they become a 'captive work force' that cannot move freely and periods when, in contrast, they become 'labour nomads' obligated to constant displacement and the impossibility of establishing themselves in the same place. These two situations are produced by the control over their 'illegalization' and represent the flip sides of the same coin. These two sides have as a consequence the extraction of cheap and hardworking labour; on the one hand they are prevented from moving, and on the other, from staying.Resumen:Este artículo analiza cómo algunos jóvenes zapatistas se convierten en migrantes inter-nacionales insertos en circuitos globales de trabajo bajo un régimen capitalista de acu-mulación flexible. Se argumenta que la mi-gración de estos jóvenes representa un des-plazamiento geográfico, político y subjetivo, ya que ellos no sólo se

  6. Wet skins tanning with chromium in dense CO2 under pressure

    International Nuclear Information System (INIS)

    An ancestral gesture steadily improved through the centuries, the transformation of skins into leather includes several stages of which the principal one is tanning. Today, 90 % of the world's leather products are tanned with chromium. However, this stage is an environmental liability, and reducing the volume and chromium content of the waste has become a major issue. A first study on skin degreasing by dense CO2 helped sharply reduce the volume of the fatty effluents. To replace water by dense CO2 as the tanning medium was the logical next step. The present study was carried out in cooperation with three tanneries in the Rhone-Alpes-Auvergne area of France and a manufacturer of tanning materials. The difficulty of the study was the chemically opposed character of the two media involved. CO2 is a non-polar and lipophilic solvent while inorganic chromium is insoluble. The water present in the treated skin is a polar and ionic reaction medium and one of the reagents in tanning chemistry. The mixture of these two partially miscible compounds gives a pH 3 by carbonic acid formation. Tanning is based on the reactivity of collagen, the main component of the skin, with hydroxylated complexes of chromium. Collagen is a protein containing some chemical functions, amines (R-NH2) and carboxylic (R-COOH) for example. These functions impart an amphoteric character to the compound. The WERNER theory of complex salts explains the formation of hydroxylated complexes of chromium and their fixing on the carboxylic functions of collagen by oxolation. pH is the key parameter in tanning. The success of the process demands chromium impregnation without fixing it at a pH lower than 5, and then to fix it by increasing the pH. This opened two alternatives for transferring chromium in the skin: solubilize chromium in CO2 via soluble organometallic complexes; or put the chromium salt into suspension without solubilizing it. The best results were obtained with the second option, which is

  7. Changes in Sun Tanning Attitudes and Behaviors of U.S. College Students from 1995 to 2005

    Science.gov (United States)

    Pettijohn, Terry F., II; Pettijohn, Terry F.; Geschke, Kaela S.

    2009-01-01

    To investigate changes in U.S. college student sun tanning attitudes and behaviors over the last decade, participants completed sun tanning attitude and behavior surveys in 1995 (n=151) and a different sample of participants completed surveys in 2005 (n=208). Consistent with predictions, results indicated that college students were more likely to…

  8. Preparation of high exhaust chrome from leather shavings and hydrocarbons with its application in leather processing for green tanning technology

    International Nuclear Information System (INIS)

    The use of chrome in tanning has made the remarkable advances to achieve the best quality and quantity of leather. But the chrome tanning process is associated with the generation of heavy metal containing solid wastes and toxic effluents. To solve the environmental issues we emphasized on the development of high exhaust chrome complex from chrome containing leather wastes that could minimize the toxic effluents up to negligible limit. Therefore in the synthetic process of chrome tanning material, the chrome shavings and the hydrocarbons have been utilized as a reductant as well as the potential masking intermediates. These chrome tanning materials have been prepared using leather shavings alone in product A, partial replacement of shavings by hydrocarbons for product B and then replacement of hydrocarbons by molasses for product C. The materials have been employed for the tanning of goat skins parallel to the commercial basic chromium sulfate (BCS). (author)

  9. 75 FR 5322 - Indoor Tanning Association; Analysis of Proposed Consent Order to Aid Public Comment

    Science.gov (United States)

    2010-02-02

    .... The order covers representations made in connection with the manufacturing, labeling, advertising, promotion, offering for sale, sale, or distribution of any covered product or service, in or affecting... proposed order. This matter involves the advertising and promotion of indoor tanning products...

  10. Resistance to Tan Spot and Stagonospora nodorum Blotch in Wheat-Alien Species Derivatives

    Science.gov (United States)

    Tan spot [caused by Pyrenophora tritici-repentis (Died.) Drechs.] and Stagonospora nodorum blotch (SNB) [caused by Stagonospora nodorum (Berk.) Castellani and Germano] are destructive fungal diseases of wheat (Triticum aestivum L.) throughout the world. Host plant resistance is thought to be an effi...

  11. Amy Tan, Author of "The Joy Luck Club." (People to Know).

    Science.gov (United States)

    Kramer, Barbara

    This book, aimed at the young reader, explores the life and career of the Chinese-American author, Amy Tan. It follows her childhood in Oakland, California, through her struggle to accept her Chinese heritage, through her education and marriage to a non-Chinese man, to her early work as a business writer, and finally to her great success as a…

  12. 77 FR 43157 - Disregarded Entities and the Indoor Tanning Services Excise Tax; Correction

    Science.gov (United States)

    2012-07-24

    ... the Federal Register on June 25, 2012 (77 FR 37806) relating to disregarded entities (including qualified subchapter S subsidiaries) and the indoor tanning services excise tax. DATES: This correction is... Excise Tax; Correction AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Correcting...

  13. Portrayal of Tanning, Clothing Fashion and Shade Use in Australian Women's Magazines, 1987-2005

    Science.gov (United States)

    Dixon, Helen; Dobbinson, Suzanne; Wakefield, Melanie; Jamsen, Kris; McLeod, Kim

    2008-01-01

    To examine modelling of outcomes relevant to sun protection in Australian women's magazines, content analysis was performed on 538 spring and summer issues of popular women's magazines from 1987 to 2005. A total of 4949 full-colour images of Caucasian females were coded for depth of tan, extent of clothing cover, use of shade and setting. Logistic…

  14. In vitro/in vivo and analytical evaluation of sunless tanning formulations containing different rheology modifiers.

    Science.gov (United States)

    Dueva-Koganov, Olga V; Mandalia, Yamini; Brito, Juan; Rocafort, Colleen; Orofino, Steven; Vazquez, Gustavo

    2010-01-01

    In vitro data suggest that different in vivo performances are expected for two dihydroxyacetone (DHA)-containing formulations with similar concentrations of DHA and excipients but different commercially available rheology modifiers: one with a cationic polymer-based rheology modifier (blend) [dimethylacrylamide/ethyltrimonium chloride methacrylate copolymer (and) propylene glycol dicaprylate/dicaprate (and) PPG-1 trideceth-6 (and) C10-11 isoparaffin]; and the other with a polyacrylamide-based rheology modifier (blend) [polyacrylamide (and) C13-14 isoparaffin (and) laureth-7]. Both rheology modifiers (blends) contained comparable levels of polymers and were used at 3% w/w (as supplied). Differences in color development were illustrated in vitro with respect to the yellow/red and lightness/chroma parameters, which were confirmed in the followup in vivo studies. The test article with the cationic polymer-based rheology modifier produced a more natural sunless tan, comparable to a desirable sun-induced tan, for all panelists, one that was more uniform and lasted longer compared with the sunless tan generated by the test article with the polyacrylamide-based rheology modifier. A method for HPLC analysis of DHA in sunless tanning formulations was established and utilized to confirm concentrations of DHA in test articles. PMID:20447361

  15. Click chemistry approach to conventional vegetable tanning process: accelerated method with improved organoleptic properties.

    Science.gov (United States)

    Krishnamoorthy, Ganesan; Ramamurthy, Govindaswamy; Sadulla, Sayeed; Sastry, Thotapalli Parvathaleswara; Mandal, Asit Baran

    2014-09-01

    Click chemistry approaches are tailored to generate molecular building blocks quickly and reliably by joining small units together selectively and covalently, stably and irreversibly. The vegetable tannins such as hydrolyzable and condensed tannins are capable to produce rather stable radicals or inhibit the progress of radicals and are prone to oxidations such as photo and auto-oxidation, and their anti-oxidant nature is well known. A lot remains to be done to understand the extent of the variation of leather stability, color variation (lightening and darkening reaction of leather), and poor resistance to water uptake for prolonged periods. In the present study, we have reported click chemistry approaches to accelerated vegetable tanning processes based on periodates catalyzed formation of oxidized hydrolysable and condensed tannins for high exhaustion with improved properties. The distribution of oxidized vegetable tannin, the thermal stability such as shrinkage temperature (T s) and denaturation temperature (T d), resistance to collagenolytic activities, and organoleptic properties of tanned leather as well as the evaluations of eco-friendly characteristics were investigated. Scanning electron microscopic analysis indicates the cross section of tightness of the leather. Differential scanning calorimetric analysis shows that the T d of leather is more than that of vegetable tanned or equal to aldehyde tanned one. The leathers exhibited fullness, softness, good color, and general appearance when compared to non-oxidized vegetable tannin. The developed process benefits from significant reduction in total solids and better biodegradability in the effluent, compared to non-oxidized vegetable tannins. PMID:24888617

  16. Accumulation of Cr by plants in tanning sludge storage sites: opportunities for contamination bioindication and phytoremediation

    Science.gov (United States)

    The lack of appropriate disposal strategies of tanning sludge (e.g., uncontrolled landfills and disposing sludge to open areas) has led to severe Cr pollution in waters and soils in many developing countries. Excessive Cr can be highly toxic to many living organisms and may damage the ecosystem. In ...

  17. Preparation and annealing study of TaN x coatings on WC-Co substrates

    Science.gov (United States)

    Chen, Yung-I.; Lin, Bo-Lu; Kuo, Yu-Chu; Huang, Jen-Ching; Chang, Li-Chun; Lin, Yu-Ting

    2011-05-01

    To prevent Co diffusion from cemented carbides at high temperatures, we fabricated TaN x coatings by reactive direct current (d.c.) magnetron sputtering onto 6 wt.% cobalt cemented carbide substrates, to form diffusion barrier layers. Varying the nitrogen flow ratio, N 2/(Ar + N 2), from 0.05 to 0.4 during the sputtering process had a significant effect on coating structure and content. Deposition rate reduced as the nitrogen flow ratio increased. The effects of nitrogen flow ratio on the crystalline characteristics of the TaN x coatings were examined by X-ray diffraction. The TaN x coatings annealing conditions were 500, 600, 700, and 800 °C for 4 h in air. We evaluated the performance of the diffusion barrier using both Auger electron spectroscopy depth-profiles and X-ray diffraction techniques. We also investigated oxidation resistance of the TaN x coatings annealed in air, and under a 50 ppm O 2-N 2 atmosphere, to evaluate the fabricated layers effectiveness as a protective coating for glass molding dies.

  18. Biointervention makes leather processing greener: an integrated cleansing and tanning system.

    Science.gov (United States)

    Thanikaivelan, Palanisamy; Rao, Jonnalagadda Raghava; Nair, Balachandran Unni; Ramasami, Thirumalachari

    2003-06-01

    The do-undo methods adopted in conventional leather processing generate huge amounts of pollutants. In other words, conventional methods employed in leather processing subject the skin/hide to wide variations in pH. Pretanning and tanning processes alone contribute more than 90% of the total pollution from leather processing. Included in this is a great deal of solid wastes such as lime and chrome sludge. In the approach described here, the hair and flesh removal as well as fiber opening have been achieved using biocatalysts at pH 8.0 for cow hides. This was followed by a pickle-free chrome tanning, which does not require a basification step. Hence, this tanning technique involves primarily three steps, namely, dehairing, fiber opening, and tanning. It has been found that the extent of hair removal, opening up of fiber bundles, and penetration and distribution of chromium are comparable to that produced by traditional methods. This has been substantiated through scanning electron microscopic, stratigraphic chrome distribution analysis, and softness measurements. Performance of the leathers is shown to be on par with conventionally processed leathers through physical and hand evaluation. Importantly, softness of the leathers is numerically proven to be comparable with that of control. The process also demonstrates reduction in chemical oxygen demand load by 80%, total solids load by 85%, and chromium load by 80% as compared to the conventional process, thereby leading toward zero discharge. The input-output audit shows that the biocatalytic three-step tanning process employs a very low amount of chemicals, thereby reducing the discharge by 90% as compared to the conventional multistep processing. Furthermore, it is also demonstrated that the process is technoeconomically viable. PMID:12831051

  19. Anatomie d’une marge passive hybride. Marge Ifni/Tan-Tan (sud du Maroc au Mesozoique: apports des donnees geophysiques

    Directory of Open Access Journals (Sweden)

    Nahim, M.

    2004-12-01

    Full Text Available The formation of the Ifninan-Tan margin started during the Triassic-Liassic extensional event, and continued during the Jurassic to present opening of the central Atlantic. This margin is located to the S of the South-Atlas lineament, between two contrasted geotectonic scenarios: the N, where the effect of the atlasic and alpine tectonics is spectacular, and the S, where this does not occur. The Ifninan-Tan margin is characterized by a series of post-rift deposits only slightly deformed and disturbed by salt diapirism towards the ocean. These series completely mask the structures of the rift, and they have been studied with the abundant information gathered by the oil exploration campaigns (seismic reflection and drilling, and with the analysis of gravimetrical and magnetic field-potential data. The study of the rift structures (both inland and offshore, highlights the difference between two sectors of the platform: (i a NE sector, where the upper part of the pre-rift substratum is not very deep, and where the dominating structural style is constituted by half-grabens and horsts; and, (ii a SW sector where grabens dominate. This paper shows that two structural styles and modes of extension can coexist on the same passive margin, one hundred kilometers apart. The differences described here are imposed by the structures inherited from the Hercynian evolution.La constitution de la marge Ifni/Tan-Tan a commencé lors de la distension triasico-liasique et s’est poursuivie pendant l’ouverture de l’Atlantique central, qui a eu lieu au Jurassique, jusqu’a l’actuel. Située au Sud du linéament sud atlasique entre deux domaines géotectoniques variés: un domaine au Nord ou l’effet de la tectonique atlasique et alpine est très spectaculaire et un domaine au Sud ou cet effet est très discret, la marge Ifni/Tan-Tan est caractérisée par des séries post-rift peu déformées et perturbées, en mer, par des montées diapiriques de sel. Ces s

  20. 40 CFR 425.30 - Applicability; description of the hair save or pulp, non-chrome tan, retan-wet finish subcategory.

    Science.gov (United States)

    2010-07-01

    ... save or pulp, non-chrome tan, retan-wet finish subcategory. 425.30 Section 425.30 Protection of... FINISHING POINT SOURCE CATEGORY Hair Save or Pulp, Non-Chrome Tan, Retan-Wet Finish Subcategory § 425.30 Applicability; description of the hair save or pulp, non-chrome tan, retan-wet finish subcategory....

  1. Part of the osseous SPECT/CT in the radio clinical suspicion of foot algo-dystrophy among adults. Bi centric study of cohort of 50 patients;Role de la TEMP/TDM osseuse dans la suspicion radioclinique d'algodystrophie du pied chez l'adulte. Etude bicentrique d'une cohorte de 50 patients

    Energy Technology Data Exchange (ETDEWEB)

    Girma, A.; Fontana, X.; Benisvy, D.; Darcourt, J. [Centre Antoine-Lacassagne, Service de medecine nucleaire, 06 - Nice (France); Ramadan, A.; Paycha, F. [Hopital Louis-Mourier, service de medecine nucleaire, 92 - Colombes (France); Baccar, S. [Hopital Louis-Mourier, service de radiologie, 92 - Colombes (France); Amoretti, N. [Hopital l' Archet, service de radiologie, 06 - Nice (France); Feydy, A. [Hopital Cochin, service de radiologie, 75 - Paris (France)

    2010-05-15

    SPECT / CT does not provide diagnostic yield compared to planar images in the diagnosis of foot algo-dystrophy. This mode plays by cons a major role in the differential diagnosis (i.e. within 90% of patients) with an accuracy and inter readers agreement significantly higher than in planar imaging and SPECT alone. (N.C.)

  2. Design of a biofilter to reduce the contamination content by chromium generated in the industries of the leather tanning

    International Nuclear Information System (INIS)

    The industrial sector of the tanneries generates unloadings with high volumes of chromium concentrates. The chromium is used in this industry like tanning agent. The tanning of skins presents some difficulties with the use of chromium salts, must to the great amount of tanning agent that does not fix to the skin and finally unloading to the environment, in waste waters causing negative effects in the environment and to the human health. The object of this work is to provide an alternative for the Chromium removal of waste water from tannery using coffee leaf variety castle, coffee Arabica

  3. Large muon (g-2) from TeV-scale MSSM with infinite tan\\beta

    CERN Document Server

    Bach, Markus; Stöckinger, Dominik; Stöckinger-Kim, Hyejung

    2015-01-01

    The muon anomalous magnetic moment $a_\\mu$ is studied in the infinite $\\tan\\beta$ limit of the MSSM. Since the muon mass arises completely from loop effects, large corrections to $a_\\mu$ are expected in comparison to the usual case with moderately high $\\tan\\beta$. Due to the qualitatively different parameter dependence, the gap between the experimental value and the Standard Model prediction can be filled only in parameter volumes in which a mass hierarchy suppresses the chargino loop in favour of the neutralino contribution. Two such possibilities are found to have either large Higgsino mass or large muon sneutrino mass. Supersymmetric particles even at the TeV scale can lead to the best fit of $a_\\mu$.

  4. Morphological changes at Mt. Etna detected by TanDEM-X

    Science.gov (United States)

    Wegmuller, Urs; Bonforte, Alessandro; De Beni, Emanuela; Guglielmino, Francesco; Strozzi, Tazio

    2014-05-01

    We produced a DEM of the Mt. Etna volcano using TanDEM-X data collected on October 9, 2012. The TanDEM-X data were acquired in bistatic mode with TSX as master sensor and TDX as receive only sensor. The pre-existing SRTM DEM was used for geometrical reference (geocoding, initial height model, large scale reference). The interferogram was computed with 4 looks in range and 4 looks in azimuth. After compensation of the SRTM heights, the differential TanDEM-X interferogram looked overall quite flat but showed local deviations related to noise (e.g. over the sea), topographic effects related to the low resolution of the SRTM DEM, and deviations related to actual changes of the topography, as observed in the Mount Etna peak region. After phase unwrapping, addressed with a minimum-cost flow algorithm and slight spatial filtering, the unwrapped phases were converted to relative heights. In order to move to absolute heights the SRTM height reference was used under the assumption that the deviation from the SRTM DEM is zero at large scale and without any linear trend. Finally, the height model was resampled into geographical coordinates. In the framework of the MED-SUV project, and thanks to the availability of a dense GPS network of more than 100 benchmarks periodically measured by INGV_OE, the TanDEM-X model has been validated. By computing the difference of the elevations provided by TanDEM-X with those measured by GPS we obtained a mean difference of 0.7 m and a standard deviation of 5.2 m. These values are biased by a few GPS benchmarks located in steep areas unfavorable illuminated by the radar. Without considerations of the two more unfavorable GPS stations, the height mean difference and a standard deviation are 0.6 m and 4.3 m respectively. We also performed correlation analyses of the height differences with respect to topography, latitude and longitude and we could exclude any elevation-related errors or geometrical ramp distortions. In the following, we compared

  5. Large muon (g - 2) with TeV-scale SUSY masses for tan β → ∞

    Science.gov (United States)

    Bach, Markus; Park, Jae-hyeon; Stöckinger, Dominik; Stöckinger-Kim, Hyejung

    2015-10-01

    The muon anomalous magnetic moment a μ is investigated in the MSSM for tan β → ∞. This is an attractive example of radiative muon mass generation with completely different qualitative parameter dependence compared to the MSSM with the usual, finite tan β. The observed, positive difference between the experimental and Standard Model values can only be explained if there are mass splittings, such that bino contributions dominate over wino ones. The two most promising cases are characterized either by large Higgsino mass μ or by large left-handed smuon mass m L . The required mass splittings and the resulting a μ SUSY are studied in detail. It is shown that the current discrepancy in a μ can be explained even in cases where all SUSY masses are at the TeV scale. The paper also presents useful analytical formulas, approximations for limiting cases, and benchmark points.

  6. Improvement of uptake of chrome tan on hide protein by basic oxides

    International Nuclear Information System (INIS)

    Three basic oxides were used to improve uptake of chrome tan as well as shrinkage temperature of the tanned leather. In addition, the skin quality is one of the most important factors taking into consideration. Three basic oxides, named magnesium oxide, manganese oxide and sodium bicarbonate. The process was optimized taking into the account the shaking rate, chrome concentration (%), initial ph, basic oxides concentration, temperature and contact time. The optimum conditions for exhaustion, fixation, shrinkage temperature as well as skin quality showed that agitation rate of 150 rpm, chrome concentration of 16%, initial ph of 2.5, basic oxide concentration of 4% magnesium oxide, temperature of 35 degree C and contact time of 24 hr. The best results obtained are 88% exhaustion, 90.03% fixation and 109 degree C shrinkage temperature in aqueous medium

  7. Otopsi ile tanısı konan bir psödo trizomi 13 olgusu

    OpenAIRE

    Kara, Mustafa; KIYAK ÇAĞLAYAN, Emel

    2012-01-01

    ÖZET Yaklaşık 10000 doğumda bir görülen Trizomi 13 (Patau Sendromu) spontan abortusların en sık nedenlerinden biridir. Doğum sonrasında otopsi ile Trizomi 13 tanısı konan bir olguyu sunmayı amaçladık. 36 yaşında, gravida 7, parite 6, yaşayan 5 olan hasta kliniğimizde normal spontan vaginal yol ile doğum yaptı. Ölü doğan yenidoğanın mak¬roskopik bulguları ve otopsisine göre tanı kondu. Hastalık 13. kromozomun ayrılmaması (nondisjunction) sonucu meydana gelir ve etkilenen bebeklerde yüz anom...

  8. Engineering Evaluation/Cost Analysis (EE/CA) for Decommissioning of TAN-607 Hot Shop Area

    Energy Technology Data Exchange (ETDEWEB)

    J. P. Floerke

    2007-02-05

    Test Area North (TAN) -607, the Technical Support Facility, is located at the north end of the Idaho National Laboratory (INL) Site. U.S. Department of Energy Idaho Operations Office (DOE-ID) is proposing to decommission the northern section of the TAN-607 facility, hereinafter referred to as TAN-607 Hot Shop Area, under a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) non-time-critical removal action (NTCRA). Despite significant efforts by the United States (U.S.) Department of Energy (DOE) to secure new business, no future mission has been identified for the TAN-607 Hot Shop Area. Its disposition has been agreed to by the Idaho State Historical Preservation Office documented in the Memorandum of Agreement signed October 2005 and it is therefore considered a surplus facility. A key element in DOE's strategy for surplus facilities is decommissioning to the maximum extent possible to ensure risk and building footprint reduction and thereby eliminating operations and maintenance cost. In addition, the DOE's 2006 Strategic Plan is ''complete cleanup of the contaminated nuclear weapons manufacturing and testing sites across the United States. DOE is responsible for the risk reduction and cleanup of the environmental legacy of the Nation's nuclear weapons program, one of the largest, most diverse, and technically complex environmental programs in the world. The Department will successfully achieve this strategic goal by ensuring the safety of the DOE employees and U.S. citizens, acquiring the best resources to complete the complex tasks, and managing projects throughout the United States in the most efficient and effective manner.'' TAN-607 is designated as a historical Signature Property by DOE Headquarters Advisory Council on Historic Preservation and, as such, public participation is required to determine the final disposition of the facility. The decommissioning action will place the TAN-607 Hot Shop

  9. Flavour-changing neutral currents in the flavour-blind MSSM at large tanβ

    International Nuclear Information System (INIS)

    A popular way to avoid too large FCNC in supersymmetric models is the assumption of minimal flavour violation (MFV), where SUSY is broken by a flavour-blind mechanism. We study how loop effects which are enhanced at large tanβ can circumvent the MFV constraint to generate new FCNCs. We show that these effects can be resummed to all orders in perturbation theory in analogy to the tanβ-enhanced corrections to the bottom mass. This procedure yields new Feynman rules which automatically contain the enhanced effects without resorting to the decoupling limit. We also include the enhanced bottom-mass corrections and clarify their dependence on the input scheme. Finally, we study contributions to FCNC observables in B physics resulting from the new Feynman rules

  10. TaN molecule as a candidate to search for New physics

    CERN Document Server

    Skripnikov, L V; Mosyagin, N S; Titov, A V; Flambaum, V V

    2015-01-01

    TaN molecule is probably the best candidate to search for T,P-violating nuclear magnetic quadrupole moment (MQM), it also looks promissing to search for other T,P-odd effects. We report results of coupled-cluster calculations of T,P-odd effects in TaN produced by the Ta nucleus MQM, electron electric dipole moment (EDM), scalar$-$pseudoscalar nucleus$-$electron interactions, also of the molecule-axis hyperfine structure constant and dipole moment. Nuclear calculations of $^{181}$Ta MQM are performed to express the T,P-odd effect in terms of the strength constants of T,P-odd nuclear forces, proton and neutron EDM, QCD parameter $\\theta$ and quark chromo-EDM.

  11. Temperature-dependence of detection efficiency in NbN and TaN SNSPD

    OpenAIRE

    Engel, Andreas; Inderbitzin, Kevin; Schilling, Andreas; Lusche, Robert; Semenov, Alexei; Hübers, Heinz-Wilhelm; Henrich, Dagmar; Hofherr, Matthias; Il'in, Konstantin; Siegel, Michael

    2012-01-01

    We present systematic measurements of the temperature-dependence of detection efficiencies in TaN and NbN superconducting nanowire single-photon detectors. We have observed a clear increase of the cut-off wavelength with decreasing temperature that we can qualitatively describe with a temperature-dependent diffusion coefficient of the quasi-particles created after photon absorption. Furthermore, the detection efficiency at wavelengths shorter than the cut-off wavelength as well as at longer w...

  12. Sistem Informasi Persediaan Produk Kerajinan Tangan di Usaha Kecil Menengah Tan Collection

    OpenAIRE

    Andita, Tika

    2015-01-01

    Sistem persediaan barang merupakan suatu sistem untuk mengetahui persediaan / stok barang pada suatu tempat. Sistem ini sudah banyak digunakan atau dikembangkan di beberapa perusahaan dengan berbagai macam teknologi dan sistem. sistem persediaan barang cukup berperan penting, dimana dalam sistem ini banyak dilakukan proses-proses yang cukup vital yang sangat berpengaruh bagi kelangsungan perusahaan. Permasalahan pada UKM Tan Collection ini adalah belum tersedianya sistem persediaan barang yan...

  13. Degradation of soil and hydrological conditions in the Peštan River Basin

    OpenAIRE

    Živanović Мilica; Novković Ivan

    2013-01-01

    In the Peštan River Basin, the right tributary of the Kolubara River, a complex degradation of natural conditions has been expressed over the decades. The exploitation of lignite in the Kolubara Coal Basin, which is in large part located in the territory of this basin, as well as accompanying activities related to it, are the dominant activities that lead to the degradation of soil and hydrological conditions. If other land use types are added to this, it c...

  14. A Qualitative Assessment of Tan Chong Motor’s Entry Into Vietnam: A Case Study

    OpenAIRE

    Ong, Justin Yi Yu

    2013-01-01

    The aim of this thesis is to perform a qualitative case study on Tan Chong Motor, a Malaysian automotive conglomerate that began from being a distributor to Nissan Motor Company, as they execute Indo-China expansion plan by first penetrating into Vietnam in 2011, an emerging country that recently begun attracting Foreign Direct Investments by restructuring regulations and infrastructures. This thesis will take into study the literature on internationalization, FDI, and institutional challenge...

  15. Determination of functional groups of humic derivatives as tanning-retanning agents

    OpenAIRE

    Bacardit Dalmases, Anna; Shendryck, Alexander; Morera Prat, Josep Maria; Bou Serra, Jordi; Ollé Otero, Lluís

    2011-01-01

    Three types of humic acids of different sources have been analysed in order to quantify the functional groups that may be liable to react with the proteins of leather. The quantification serves to determine the extent to which each of these acids can be used as tanning or retanning agents. The three types of humid acids have been compared mathematically according to their content within the aforementioned functional groups. Humic acids have structures similar to those of vegetable tannins.

  16. Determination of fungicides in residual tanning floats using solid phase micro extraction

    OpenAIRE

    Font Vallès, Joaquim; Reyes Reyes, Maria; Cuadros, Sara; Bacardit Dalmases, Anna; Ollé Otero, Lluís; Marsal Monge, Agustín

    2013-01-01

    Solid-phase microextraction (SPME) was optimized for extraction of the leather preservative agents 2-(thiocyanomethylthio)-benzothiazole (TCMTB), 4-chloro-3-methylphenol (PCMC), 2-phenylphenol (OPP), 2-Octyl-3(2H)-isothiazolone (OIT), 2-mercaptobenzothiazol (MBT) and 3-iodo-2-propynyl-butylcarbamate (IPBC) in spent tanning floats. Determination was carried out by high performance liquid chromatography (HPLC) with photo diode array detection (PDA). The following parameters were studied to ach...

  17. Radiation-initiated graft polymerization of methyl acrylate onto chrome-tanned sheepskin

    International Nuclear Information System (INIS)

    Radiation grafting method was applied to obtain leather-polymer composite. Grafting of methyl acrylate onto chrome-tanned, bluestock sheepskin was investigated under the initiatory effect of 60Co radiation of 0.20 11.50 Mrad. The percent of grafting was determined and water adsorption and shrinkage temperature measurements were carried out. It was shown that 2-4 Mrad is convenient to produce leather-polymer composite. (author)

  18. High School Students’ Use of Sunscreen and Tanning Beds

    Centers for Disease Control (CDC) Podcasts

    2014-08-20

    This podcast is an interview with Corey Basch, EdD, MPH, assistant professor in the Department of Public Health at William Paterson University. Dr. Basch discusses her study on high school students’ use of sunscreen and tanning beds between 2001 and 2011.  Created: 8/20/2014 by Preventing Chronic Disease (PCD), National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP).   Date Released: 8/20/2014.

  19. Sonic Gestures Applied to a Percussive Dialogue in TanGram using Wii Remotes

    OpenAIRE

    Perales, Carlos D.; Portalés Ricart, Cristina; Sanmartín, Francisco

    2009-01-01

    TanGram, is an original music score composed by Carlos D. Perales for Percussion Quartet and Nintendo Wii Remotes used as a wireless interface for Live Electronics. This paper examines how this composition explores exiting research in interaction and communication between instruments and digital sound processing discourse to produce a unique music mixed-media score, to explore the sonic possibilities of a multi-timbrical instrument with the integration of the visual gestures of an accessible ...

  20. An assessment of TanDEM-X GlobalDEM over rural and urban areas

    Science.gov (United States)

    Koudogbo, Fifamè N.; Duro, Javier; Huber, Martin; Rudari, Roberto; Eddy, Andrew; Lucas, Richard

    2014-10-01

    Digital Elevation Model (DEM) is a key input for the development of risk management systems. Main limitation of the current available DEM is the low level of resolution. DEMs such as STRM 90m or ASTER are globally available free of charge, but offer limited use, for example, to flood modelers in most geographic areas. TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement), the first bistatic SAR can fulfil this gap. The mission objective is the generation of a consistent global digital elevation model with an unprecedented accuracy according to the HRTI-3 (High Resolution Terrain Information) specifications. The mission opens a new era in risk assessment. In the framework of ALTAMIRA INFORMATION research activities, the DIAPASON (Differential Interferometric Automated Process Applied to Survey Of Nature) processing chain has been successfully adapted to TanDEM-X CoSSC (Coregistered Slant Range Single Look Complex) data processing. In this study the capability of CoSSC data for DEM generation is investigated. Within the on-going FP7 RASOR project (Rapid Analysis and Spatialisation and Of Risk), the generated DEM are compared with Intermediate DEM derived from the TanDEM-X first global coverage. The results are presented and discussed.

  1. The supersymmetric Higgs sector and $B-\\overline{B}$ mixing for large tan $\\beta$

    CERN Document Server

    Gorbahn, Martin; Nierste, Ulrich; Trine, Stephanie

    2009-01-01

    We match the Higgs sector of the most general flavour breaking and CP violating minimal supersymmetric standard model (MSSM) onto a generic two-Higgs-doublet model, paying special attention to the definition of tan beta in the effective theory. In particular no tan beta-enhanced loop corrections appear in the relation to tan beta defined in the DRbar scheme in the MSSM. The corrections to the Higgs-mediated flavour-changing amplitudes which result from this matching are especially relevant for the B_d and B_s mass differences dM_s,d for minimal flavour violation, where the superficially leading contribution vanishes. We give a symmetry argument to explain this cancellation and perform a systematic study of all Higgs-mediated effects, including Higgs loops. The corrections to dM_s are at most 7% for mu>0 and M_A tau^+ nu or B -> X_s gamma. We further update supersymmetric loop corrections to the Yukawa couplings, where we include all possible CP-violating phases and correct errors in the literature. The possi...

  2. POTENTIAL OF VEGETABLE TANNING MATERIALS AND BASIC ALUMINUM SULPHATE IN SUDANESE LEATHER INDUSTRY

    Directory of Open Access Journals (Sweden)

    MAHDI, HAROUN

    2009-03-01

    Full Text Available Ecological pressures on chromium have now forced the leather industry to look for possible alternatives. A vegetable- aluminum combination tannage has been studied, with special attention being given to intended final product. Aluminum is mineral tanning agents that are widely used to stabilize collagens in the leather industry. In this study, the crosslinking of vegetable and aluminum, with collagens, have been explored. This kind of chrome free tannage give us leathers with shrinkage temperature around 125oC, elongation at break 65.6%, tensile strength 38 N/mm2, and tear strength 98 N/mm. The chemical properties of the combination tanned leathers are found to be quite normal. Among the combination system evaluated, a vegetable pretannage followed by retannage with basic aluminum sulphate was found to produce stronger leather with the durable characteristics. In contrast, pre-tanning with aluminum possibly tightens the collagen fiber network, preventing high molecular weight vegetable tannins from interacting with collagen fibres. Optimal results were obtained when 10% (w/w vegetable tannins (garad and 2% Aluminum sulphate was used.

  3. Selection of the Chrome Reduction Bacteria in the Waste of Tanning Leather Industries by Ozonization Method

    International Nuclear Information System (INIS)

    Selection of the chrome reduction bacteria in the waste of tanning leather industries by ozonization method has been done. The objectives of this research was to obtain isolate bacteria from the waste with chrome contain, so that expected can be used for chrome bioremediation agent for arrange to improved the waste treatment for tanning leather industries. Selection of bacteria in the waste was carried out by ozonization method with time variation 0 to 210 minutes by time interval 15 minutes. Isolation bacteria was carried out was grown on the BHI media for 24 hours at 37°C temperature. So be inoculated by streak plate method on the TBX, MC, EA, CTM and BP media. Characterization of bacteria was done by saw the colonies morphology, sel morphology and biochemical characterization. So, identification of isolate bacteria by matching profile method. The result of this research can be obtained 5 isolate bacteria BCR1, BCR2, BCR3, BCR4 and BCR5 with the different phenotypic character. From the five isolate can be selected resistance ozon isolate until 180 minutes time ozonization were BCR 2, were identified belong to the genus of Bacillus. The examination results showed that the isolate bacteria be able to reduction of the chrome concentration in the waste of tanning leather industries by 71.03 %. Efficiency. (author)

  4. Green route for the utilization of chrome shavings (chromium-containing solid waste) in tanning industry.

    Science.gov (United States)

    Rao, Jonnalagadda Raghava; Thanikaivelan, Palanisamy; Sreeram, Kalarical Janardhanan; Nair, Balachandran Unni

    2002-03-15

    Chromium-containing wastes from various industrial sectors are under critical review. Leather processing is one such industrial activity that generates chromium-bearing wastes in different forms. One of them is chrome shavings, and this contributes to an extent of 10% of the quantum of raw skins/hides processed, amounting to 0.8 million ton globally. In this study, the high protein content of chrome shavings has been utilized for reduction of chromium(VI) in the preparation of chrome tanning agent. This approach has been exploited for the development of two products: one with chrome shavings alone as reducing agent and the other with equal proportion of chrome shavings and molasses. The developed products exhibit more masking due to the formation of intermediate organic oligopeptides. This has been corroborated through the spectral, hydrolysis, and species-wise distribution studies. The formation of these organic masking agents helps in chrome tanning by shifting the precipitation point of chromium to relatively higher pH levels. Hence, the developed products find use as chrome tanning agents for leather processing, thus providing a means for better utilization of chrome shaving wastes. PMID:11944695

  5. Radiation induced graft copolymerization of methyl methacrylate onto chrome-tanned pig skins

    International Nuclear Information System (INIS)

    Graft copolymerization of methyl methacrylate (MMA) onto chrome-tanned pig skins was carried out by irradiation with 60Co γ-rays. The grafted polymethyl methacrylate (PMMA) chains were isolated by acid hydrolysis of the collagen backbone in order to characterize the graft copolymers. Proof of grafting was obtained through the detection of amino acid endgroups in the isolated grafts by reaction with ninhydrin. The grafting yield of MMA in aqueous emulsion was found to be higher than that for pure MMA and MMA in acetone. The degree of grafting increases with increasing monomer concentration in emulsion and reaches maximum at radiation dose ca 15 kGy. The yield of grafting is very high. The present paper reports the physical properties of chrome-tanned pig skins after graft polymerization with MMA in emulsion. Modified leathers are more resistant against water absorption and abrasion in comparison with unmodified ones. They have more uniform structure over the whole surface, greater thickness and stiffness. The mechanism of some of the processes occurring during radiation grafting of MMA in water emulsion on tanned leathers has been also suggested and discussed. (author)

  6. Melanotropic peptides: more than just 'Barbie drugs' and 'sun-tan jabs'?

    Science.gov (United States)

    Langan, E A; Nie, Z; Rhodes, L E

    2010-09-01

    While ultraviolet radiation (UVR) is a major cause of skin ageing and carcinogenesis, public pursuit of a novel tanning strategy circumventing the need for UVR is increasingly reported in the media and scientific press. This involves the subcutaneous self-administration of unregulated products labelled as melanotan I and/or II, synthetic analogues of α-melanocyte stimulating hormone (α-MSH), as obtained via the internet, tanning salons and gyms. The Medicines and Healthcare products Regulatory Authority has recently raised awareness of the public health risk of transmission of blood-borne viruses from the needle sharing that may occur, and of the potential impurity of these products. Dermatologists should also be aware that these agents can complicate the clinical presentation of patients with pigmented lesions; their use may be suspected in unexpectedly tanned individuals with rapidly pigmenting naevi. Meanwhile, the regulated α-MSH analogue afamelanotide (Clinuvel Pharmaceuticals Ltd, Melbourne, Australia) is showing promise for its photoprotective potential, and is undergoing phase II and III clinical trials in people with photosensitivity disorders and those prone to nonmelanoma skin cancer. The photoprotective and other biological effects of α-MSH analogues await full determination. PMID:20545686

  7. High exhaust chrome complex using chrome tanned tannery, solid wastes and common hydrocarbons as reductants and masking agents to minimize the liquid and solid wastes: tanning and environmental impact studies

    International Nuclear Information System (INIS)

    Still no alternate of chrome tanning has been found to achieve the best quality and quantity of leather. But the chrome tanning process is associated with the generation of very toxic liquid and solid wastes. Therefore we emphasized to develop an efficient process for the synthesis of high exhaust chrome complex that could minimize the both liquid and solid wastes up to very low limit. In this research, chrome shavings and raw organic compounds have beneficially utilized as a reductant as well as potential masking agents providing a comprehensive close loop. Two chrome tanning materials have been developed using leather shavings with molasses in product A and replacement of molasses by other organic compounds for chrome complex B. These materials have also been employed for the tanning of goatskins parallel to the commercial BCS from the market. The comparative studies revealed that, the quality of leather made from product B is either better or comparable with the conventional tanning material. The chrome contents in leather have been increased with the simultaneous decreased in spent chrome liquor. Hence the exhaustion rate of chrome complex B has been noted up to 95%. While the physical characteristics of resulted leather from product A and B have been found comparable to that of conventional tanned leather. Therefore this methodology would not only reduce liquid and solid wastes but also provide quality leather and economically multi benefits. (author)

  8. Relações entre o bem-estar subjetivo e a funcionalidade em idosos em seguimento ambulatorial Relationship between subjective well-being and the functionality of elderly outpatients

    Directory of Open Access Journals (Sweden)

    Giovana Sposito

    2010-02-01

    Full Text Available OBJETIVO: Este estudo teve como objetivo verificar a relação entre o bem-estar subjetivo, independência funcional e desempenho de membros inferiores (força muscular, velocidade de marcha e equilíbrio de idosos em seguimento ambulatorial, em relação ao sexo e a grupos etários. MÉTODOS: Foram avaliados 125 idosos de ambos os sexos com idade mínima de 60 anos, atendidos em um ambulatório de geriatria. Os instrumentos utilizados foram: 1 Medida da Independência Funcional (MIF para avaliar a dependência funcional; 2 Short Physical Performance Battery (SPPB para medir o desempenho físico; 3 Bem-Estar Subjetivo (BES: questões sobre a saúde e satisfação com a vida. RESULTADOS: A amostra utilizada foi de conveniência, com predomínio do sexo feminino, que apresentou maior comprometimento funcional. As correlações do bem-estar subjetivo com o teste de desempenho não demonstraram diferenças entre os sexos, contudo os idosos mais velhos apresentaram maior nível de satisfação que os idosos mais jovens. A saúde percebida também foi mais satisfatória entre os idosos mais velhos. Entretanto, a saúde percebida comparada mostrou melhores resultados nos idosos com moderado a bom desempenho físico. CONCLUSÃO: Os resultados sugerem que indivíduos mais velhos apresentam maior satisfação com a vida e melhor saúde percebida. Além disso, o bom desempenho físico foi uma variável de relevância para melhor saúde percebida quando comparada a outras pessoas.OBJECTIVE: The aim of this study was to investigate the relationship between subjective well-being, functional independence and lower-limb performance (muscle strength, gait velocity and balance among elderly people undergoing outpatient follow-up, stratified by sex and age groups. METHODS: We evaluated 125 elderly people, aged 60 years and over, who received care at a geriatric outpatient clinic. The instruments used were: 1 Functional Independence Measure (FIM to evaluate

  9. Study of the effect of temperature, relative humidity and UV radiation on chrome-tanned leather ageing

    OpenAIRE

    Bacardit Dalmases, Anna; Jorba, Montse; Font Vallès, Joaquim; Ollé Otero, Lluís

    2012-01-01

    Since leather is strongly affected by three main environmental parameters: temperature, relative humidity and UV radiation, this piece of research focuses on the effect that these three factors have on chrome-tanned leather ageing. Chrome tanned leathers were exposed to weathering effects in a climatic chamber in order to identify the most important variables affecting this weathering process and also to check for any possible interactions. Both a multilevel centralized factorial experimental...

  10. Petrography, age, and paleomagnetism of basaltic lava flows in coreholes at Test Area North (TAN), Idaho National Engineering Laboratory

    International Nuclear Information System (INIS)

    The petrography, age, and paleomagnetism were determined on basalt from 21 lava flows comprising about 1,700 feet of core from two coreholes (TAN CH No. 1 and TAN CH No. 2) in the Test Area North (TAN) area of the Idaho National Engineering Laboratory (INEL). Paleomagnetic studies were made on two additional cores from shallow coreholes in the TAN area. K-Ar ages and paleomagnetism also were determined on nearby surface outcrops of Circular Butte. Paleomagnetic measurements were made on 416 samples from four coreholes and on a single site in surface lava flows of Circular Butte. K-Ar ages were measured on 9 basalt samples from TAN CH No. 1 and TAN CH No. 2 and one sample from Circular Butte. K-Ar ages ranged from 1.044 Ma to 2.56 Ma. All of the samples have reversed magnetic polarity and were erupted during the Matuyama Reversed Polarity Epoch. The purpose of investigations was to develop a three-dimensional stratigraphic framework for geologic and hydrologic studies including potential volcanic hazards to facilities at the INEL and movement of radionuclides in the Snake River Plain aquifer

  11. Agenda-setting effects of sun-related news coverage on public attitudes and beliefs about tanning and skin cancer.

    Science.gov (United States)

    Dixon, Helen; Warne, Charles; Scully, Maree; Dobbinson, Suzanne; Wakefield, Melanie

    2014-01-01

    The topics and framing of news stories relevant to skin cancer prevention have shifted over time. This study examined agenda-setting effects of such news stories on public attitudes and beliefs about tanning and skin cancer. Content analysis data on 516 articles published in two major daily newspapers in Melbourne, Australia, from 1994 to 2007 were combined with circulation data to generate indices of potential news exposure. Associations between these indices and cross-sectional telephone survey data from the same period on 6,244 adults' tanning attitudes and perceived susceptibility to skin cancer were examined using logistic regression models, accounting for the temporal precedence of news content. Pro-sun protection stories on attitudes and behavior were associated with older adults not thinking a tan looks healthy. Pro-sun protection stories on solaria were associated with less preference for a deep tan among young adults who like to suntan. Stories on vitamin D that were unsupportive of or ambiguous about sun protection were associated with a number of pro-tan attitudes among younger adults. Results indicate news coverage during 1994-2007 served an important agenda-setting role in explaining the public's attitudes and beliefs about tanning and skin cancer. Vitamin D stories appeared most influential, particularly among young adults. PMID:23485415

  12. Calidad de vida familiar y bienestar subjetivo en jóvenes con discapacidad intelectual de un establecimiento con educación especial y laboral de la Ciudad de Talca

    Directory of Open Access Journals (Sweden)

    YOHANINA ANDREA MUÑOZ VALDÉS

    2012-01-01

    Full Text Available El estudio que se presenta tuvo como objeti vo identificar la relación entre la Calidad de Vi - da Familiar, Funcionamiento Familiar y Bienestar Subjetivo junto con los factores de la calidad de vida familiar en relación al bienestar subjetivo en jóvenes con discapacidad intelectual, alum nos de un establecimiento de educación especial y laboral de la ciudad de Talca (Chile. La muestra fue dividida en dos grupos: uno de ellos estuvo integrado por 53 alumnos de 16 a 24 años de edad, del citado establecimiento que fueron diagnosticados con discapacidad intelectual: el 52.8% de ellos manifiesta discapacidad intelectual como único predictor de su condición, mientras que el 47.2% restante corresponde a comorbilidad de ésta con otros tipos de discapacidad asociados. Los niveles de discapacidad van desde el leve (37.7%, seguido por el moderado (50.9% y finalmente el severo y el profundo (3.8%. El otro grupo estuvo conformado por 53 apoderados, padres o tutores del mismo establecimiento educacional. Con la finalidad de medir las variables de estudio se administraron cuatro instrumentos: (1 la Escala de Calidad de Vida Familiar (Verdugo, Sainz & Rodríguez, 2009, (2 la versión traducida al español (Bellon, Delgado, Luna del Castillo & Lardelli, 1996 del Family Functioning Questionnaire (Smilkstein, Ashworth & Montano, 1982, (3 la adaptación y validación de Moyano y Ramos Alvarado (2007 de la Satisfaction with the Life Scale (Diener, Emmons, Larden & Griffin y (4 la versión chilena de Moyano-Díaz & Ramos (2007 de la Subjective Happiness Scale (Lyubomirsky & Lepper, 1999. Para realizar el estudio se utilizó una metodología descriptiva y correlacional de corte transversal a fin de establecer relaciones de con comitancia entre las variables. Los resultados principales demostraron una relación significativa entre importancia de la calidad de vida familiar y satisfacción de la calidad de vida familiar (r = .402; p < .01; entre felicidad

  13. Conocimiento objetivo y subjetivo sobre el VIH/SIDA como predictor del uso de condón en adolescentes Objective and subjective knowledge on HIV/AIDS as predictors of condom use in adolescents

    Directory of Open Access Journals (Sweden)

    Alberto Villaseñor-Sierra

    2003-01-01

    Full Text Available OBJETIVO: Evaluar la asociación de conocimientos objetivo y subjetivo sobre VIH/SIDA con el uso del condón. MATERIAL Y MÉTODOS: Se analizó la base de datos de una encuesta aleatoria, anónima y autoaplicada en 1 410 adolescentes de cuatro estratos socioeconómicos de Guadalajara, Jalisco, México, entre 1995 y 1996. El conocimiento objetivo se evaluó mediante 24 preguntas sobre VIH/SIDA y el "subjetivo" con la pregunta: "¿qué tanto crees conocer sobre el SIDA?" Las variables predictoras del uso del condón se identificaron mediante regresión logística y cálculo de la razón de momios con IC 95%. RESULTADOS: El nivel de conocimiento objetivo fue regular y tuvo diferencias por estratos (pOBJECTIVE: To evaluate the association between objective and subjective knowledge on HIV/AIDS and condom use. MATERIAL AND METHODS: Analysis of a database from an anonymous, self-applied, randomized survey conducted between 1995 and 1996. Study subjects were 1 410 adolescents of four socioeconomic strata from Guadalajara, Mexico. Objective knowledge was assessed with 24 questions regarding HIV/AIDS, and subjective knowledge with the question "how much do you think you know about HIV/AIDS?" The variables associated with condom use were identified using logistic regression analysis and by calculating odds ratios with a 95% confidence interval. RESULTS: The degree of objective knowledge was "average", differentiated by socioeconomic strata (p< 0.001, and was higher in adolescents from medium and high socioeconomic strata (p< 0.008. Regarding subjective knowledge, adolescents from the low, medium, and high socioeconomic strata claimed to know "a little", and the ones from the lowest stratum claimed to know "very little". Condom use was higher in males (35.4%, and in adolescents from high socioeconomic strata (p< 0.005, than in females (15.3% (p< 0.001. Although there was a correlation between objective and subjective knowledge (r = 0.37, p< 0.001, a higher

  14. Influência da autoestima, da regulação emocional e do gênero no bem-estar subjetivo e psicológico de adolescentes

    Directory of Open Access Journals (Sweden)

    Teresa Freire

    2011-01-01

    Full Text Available INTRODUÇÃO: A literatura científica tem evidenciado que a autoestima e a capacidade de regulação emocional estão presentes em vários quadros psicopatológicos, contudo a influência dessas variáveis no bem-estar tem sido pouco estudada teórica e empiricamente. OBJETIVO: Pretende-se analisar a relação dessas variáveis com o bem-estar subjetivo (satisfação com a vida e com o bem-estar psicológico (felicidade e significado. Pretende-se, ainda, verificar a capacidade de predição do gênero, da autoestima e das estratégias de regulação emocional (supressão emocional e reavaliação cognitiva nos diferentes componentes do bem-estar. MÉTODOS: Participaram do estudo 216 adolescentes de uma população normativa de ambos os sexos. Foram administrados, a todos os participantes, quatro instrumentos para avaliar a autoestima, a capacidade de regulação emocional, o bem-estar subjetivo e psicológico. RESULTADOS: A supressão emocional correlacionou-se negativamente com todas as medidas de bem-estar, enquanto a reavaliação cognitiva evidenciou correlação positiva mais significativa com os níveis de felicidade. A autoestima revelou correlação positiva forte com a satisfação com a vida e maior capacidade de predição do bem-estar do que as estratégias de regulação emocional. CONCLUSÃO: A autoestima revela ser uma variável importante na promoção do bem-estar dos adolescentes, assumindo-se como elemento fundamental numa intervenção clínica positiva e preventiva.

  15. Da conceituação de Estado Subjetivo até a proposição dos Escalões de percepto From the Subjective State concept toward the Percept Echelons proposal

    Directory of Open Access Journals (Sweden)

    Arno Engelmann

    2002-01-01

    Full Text Available O artigo refaz o percurso de Engelmann, lidando em 1962 com perceptos chamados de afetivos até a proposição mais recente de escalões de percepto. O estudo aprofundado dos perceptos afetivos indicavam estados conscientes internos, porém não localizados. Engelmann denominou-os estados subjetivos. Mas deparou que havia ao mesmo tempo outros perceptos internos, esses localizados. A solução era dois escalões: um superior - estados subjetivos - e outro inferior - perceptos internos. Mais tarde Engelmann encontrou estados objetivos, estados conscientes não localizados e externos, representados principalmente por locuções meteorológicas. Finalmente, reestudando um número enorme de experimentos de percepção humana, verificou que havia cinco escalões de percepto, organizados prioritariamente na seqüência seguinte levando em conta o tamanho das partes: estados total, bipartido, supramodal, modal e fragmentário. Os indivíduos são capazes de estar momentaneamente apenas num desses escalões, nunca mais de um. Não se sabe, por enquanto, se é possível representar por intermédio de escalões outras partes da consciência além dos perceptos.Dealing firstly with the affective percepts in 1962 and ending with percept echelons, the paper reconstructs Engelmann's psychological pathway. A serious study of mostly affect percepts indicated nonlocalized internal conscious states. Engelmann called them subjeticve states. But at the same time he found that there were other internal but localized external percepts. He called them objetive states. They were mainly characterized through reporting the weather. Finally, revising numerous perception studies, total, bipartite, supramodal, modal and fragmentary states are found and organizaed through largeness priority. Engelmann called them percepts echelons. In one moment only one percept echelon is possible, not more than one. So far it is not known if others parts of consciousness are divisible

  16. E.s.r. study of decay of the nitroxyl free radical TAN in whole rats and rat-tissue homogenates

    International Nuclear Information System (INIS)

    The loss of the radical property of TAN (2,2,6,6-tetramethyl-4-piperidone-N-oxyl) in the blood of anaesthetized rats has been studied by e.s.r.. Some physiological techniques, such as ligating the portal vein and the abdominal aorta, and also sympathetic blockade, were used to elucidate possible mechanisms of the TAN decay process. Similar decay curves were obtained with rats at normal (370C) and lowered (27 to 280C) body temperatures, indicating the involvement of processes other than enzymic in the in vivo decay of TAN. The fast decay could not be explained by reaction of TAN with other components of blood, since in vitro TAN in blood lost its radical property very slowly. Evidence was obtained for the conversion of TAN to TMPN in the kidney of rats anaesthetized with ether, but not with Nembutal. The greater half-value time recorded in rats with interrupted portal circulation may indicate that the liver is an essential factor in the degradation of TAN. A temperature-dependent TAN decay was observed with in vitro mixtures with homogenates of organs and the decay was faster with homogenates of kidney and liver than brain, lungs and heart, suggesting that enzymic processes do control the in vitro decomposition of TAN. Consideration is given to implications of these results for the potential applications of TAN as a radiosensitizer. (U.K.)

  17. Impact of an outright ban on the availability of commercial tanning services in Victoria, Australia.

    Science.gov (United States)

    Sinclair, C; Cleaves, N; Dunstone, K; Makin, J; Zouzounis, S

    2016-08-01

    Australian states have introduced an outright ban on commercial artificial tanning sunbeds. This was based on evidence from systematic reviews affirming a strong association between tanning bed use and increased risk of melanoma. The implementation of the ban provides an opportunity to assess the effectiveness of the legislation in preventing access to artificial UV radiation. Compliance with the ban has been enforced and monitored by government departments. We additionally monitored online tanning bed advertisements before and after the ban, showing a decline over time in the number of sunbeds advertised for sale on gumtree.com.au and ebay.com.au, from a peak of 115 advertisements in May 2014 to 50 or fewer per month from February 2015. There was also an increase in advertised price, with the percentage of sunbeds offered in Victoria on gumtree.com.au at higher than $2 000 increasing from around 25% between January and June 2014 to 65% in the quarter following the introduction of the ban. Advertisements on gumtree.com.au from individuals wishing to access a sunbed in a private home in Victoria increased from only isolated instances in the months immediately prior to the ban, to between 25 and 77 advertisements per month in the quarter following the ban. In summary, the introduction of an outright ban of commercial sunbeds has achieved a dramatic reduction in the availability of harmful artificial UV radiation sources in Australia. Long-term benefits to the health of the population and a reduction in costs to the health system are expected to result. PMID:27535604

  18. Inter-agency comparison of TanDEM-X baseline solutions

    Science.gov (United States)

    Jäggi, A.; Montenbruck, O.; Moon, Y.; Wermuth, M.; König, R.; Michalak, G.; Bock, H.; Bodenmann, D.

    2012-07-01

    TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) is the first Synthetic Aperture Radar (SAR) mission using close formation flying for bistatic SAR interferometry. The primary goal of the mission is to generate a global digital elevation model (DEM) with 2 m height precision and 10 m ground resolution from the configurable SAR interferometer with space baselines of a few hundred meters. As a key mission requirement for the interferometric SAR processing, the relative position, or baseline vector, of the two satellites must be determined with an accuracy of 1 mm (1D RMS) from GPS measurements collected by the onboard receivers. The operational baseline products for the TanDEM-X mission are routinely generated by the German Research Center for Geosciences (GFZ) and the German Space Operations Center (DLR/GSOC) using different software packages (EPOS/BSW, GHOST) and analysis strategies. For a further independent performance assessment, TanDEM-X baseline solutions are generated at the Astronomical Institute of the University of Bern (AIUB) on a best effort basis using the Bernese Software (BSW). Dual-frequency baseline solutions are compared for a 1-month test period in January 2011. Differences of reduced-dynamic baseline solutions exhibit a representative standard deviation (STD) of 1 mm outside maneuver periods, while biases are below 1 mm in all directions. The achieved baseline determination performance is close to the mission specification, but independent SAR calibration data takes acquired over areas with a well known DEM from previous missions will be required to fully meet the 1 mm 1D RMS target. Besides the operational solutions, single-frequency baseline solutions are tested. They benefit from a more robust ambiguity fixing and show a slightly better agreement of below 1 mm STD, but are potentially affected by errors caused by an incomplete compensation of differential ionospheric path delays.

  19. Die Tan Ware innerhalb des Keramikspektrums des spätbronzezeitlichen Troia

    OpenAIRE

    Rigter, Wendy Elvira

    2013-01-01

    Sowohl die Grabungen Blegens als auch die jüngsten Arbeiten unter der Leitung von Manfred O. Korfmann zeigen, dass die Anatolische Grauware und die Tan Ware die populärsten Waren bildeten in Troia, deren Verhältnis zueinander etwa 2:1 beträgt. Blegen glaubte noch, dass etwa ein Drittel der gesamten Keramik aus Troia VI entweder original mykenisch oder mykenisch inspiriert sei. Indes ergaben neue Forschungen, dass die mykenischen Waren in Troia insgesamt doch nicht so häufig sind und die Mehr...

  20. The musicological portions of the Saṅgītanārāyaṇa

    OpenAIRE

    Katz, Jonathan

    1987-01-01

    The Saṅgītanārāyaṇa, attributed to the Gajapati king Nārāyad nadeva of Parlākhimidi but almost certainly composed by his guru Kaviratna Purud sottamamisra, is the most extensive surviving Sanskrit treatise on music to have been composed in the eastern region of India now known as Orissa. The treatise contains four chapters, gītanirnaya (on vocal music), vādyanirṇaya (on instruments), nāṭyanirṇaya (on dance and the mimetic art), and śuddhaprabandhodāharaṇa (sample compositions ...

  1. "Algo interesante ocurre en nuestros talleres..."

    OpenAIRE

    Tendlarz, Edit; Loprete, Natalia; Fernández Tayeldín, Juliana; Pérez Cabalar, María del Carmen; Salles, Alejandro

    2009-01-01

    La ponencia que presentaremos da cuenta de una experiencia innovadora de trabajo, a partir de talleres con pacientes psicóticos, en el marco del hospital Borda, en un servicio de pacientes crónicos. Este dispositivo es fruto de una articulación entre la experiencia y la teoría.

  2. 利用鞣制对动物组织的固定研究%Animal Tissue Fixation with Tanning

    Institute of Scientific and Technical Information of China (English)

    史楷岐; 尹维刚; 李亚; 邵双喜; 韩瑾润

    2011-01-01

    Tissue fixatives and their fixation mechanisms were reviewed, and compared with tanning mechanism. It is concluded that tissue fixatives and tanning agents had same reactive function groups and reacting points. Therefore, it is feasible to fix tissue with tanning agents theoretically. Furthermore, tanning agent, phosphonium salts, was employed to rabbit tissue fixation. After 2 years, the fixed rabbit specimen was dissected and observed. It is clear that there was no rot and mildew and the morphological maintains was desirable. It is feasible to fix tissue with tanning agent practically.%综述了现有组织固定材料及其机理,并与皮革鞣制机理进行对比,得出两者具有相类似的活性基团,组织固定和皮革鞣制过程具有相同的反应点,利用皮革鞣剂固定动物组织理论可行;进一步利用鳞盐鞣剂对兔子进行固定、观察,固定后的兔组织形态保持良好,证明利用皮革鞣剂固定动物组织实践可行.

  3. Degradation of soil and hydrological conditions in the Peštan River Basin

    Directory of Open Access Journals (Sweden)

    Živanović Мilica

    2013-01-01

    Full Text Available In the Peštan River Basin, the right tributary of the Kolubara River, a complex degradation of natural conditions has been expressed over the decades. The exploitation of lignite in the Kolubara Coal Basin, which is in large part located in the territory of this basin, as well as accompanying activities related to it, are the dominant activities that lead to the degradation of soil and hydrological conditions. If other land use types are added to this, it can be concluded that the land cover in the studied territory suffered significant negative changes. The above mentioned activities have led to land loss and deterioration of its quality, and the regulation works due to dislocation of the Kolubara watercourse into the Peštan riverbed have caused numerous degradation of landscapes, reduced the basin area and shortened its watercourse, led to morphological changes of the river network and deterioration of the surface water quality. The aim of this paper is to perform a geospatial analysis of all areas in which the degradation of soil and hydrological conditions is present, in order to prevent their further degradation and proper management of these areas. [Projekat Ministarstva nauke Republike Srbije, br. 43007: The Research on Climate Change Influences on Environment: Influence Monitoring, Adaptation and Mitigation, subproject No. 9: Torrential Floods Frequency, Soil and Water Degradation as the Consequence of Global Changes

  4. Osteoporozun Tanı Yöntemleri, Komplikasyonları ve Maliyetinin Değerlendirilmesi

    OpenAIRE

    Üstündağ, Nursel; Murat KORKMAZ; Öksüzkaya, Ahmet; BALBALOĞLU, Özlem

    2013-01-01

    En sık görülen kemik hastalığı olan osteoporoz düşük kemik kütlesi ve kemik dokunun mikro yapısında bozulma ile karakterize, kemik frajilitesinde ve kırık riskinde artışa ne­den olan sistemik bir iskelet hastalığıdır. Erken tanı için hastanın ayrıntılı risk faktörlerinin sorgulanması, fizik muayenesinin yapılması ve kırık riskinin belirlenmesi yanında kemik mineral yoğunluğu ölçümleri, konvansiyonel grafiler ve laboratuar yöntemleri kullanıl­maktadır. Osteoporozun tanı yöntemleri arasında kon...

  5. Chromium recovery from exhausted baths generated in plating processes and its reuse in the tanning industry.

    Science.gov (United States)

    Torras, Josep; Buj, Irene; Rovira, Miquel; de Pablo, Joan

    2012-03-30

    Chromium plating used for functional purposes provides an extremely hard, wear and corrosion resistant layer by means of electrolytic deposition. Typical layer thicknesses range between 2.5 and 500 μm. Chromium electroplating baths contain high concentrations of Cr(VI) with chromium trioxide (CrO(3)) as the chromium source. When because of technical or economic reasons a bath gets exhausted, a waste containing mainly chromium as dichromate as well as other heavy metals is generated. Chromium may then be purified for use in other industrial processes with different requirements. In this work, a sustainable system for using galvanic wastes as reagents in the leather tanning industry, thus reducing quantity of wastes to be treated, is presented. Metal cations present in the chromium exhausted bath were precipitated with NaOH. Then, the solution containing mainly soluble Cr(VI) was separated. By means of sodium sulphite in acidic conditions, Cr(VI) was reduced to Cr(III) as chromium (III) sulphate. From chromium (III) sulphate a basic Cr(III) sulphate may be obtained, which is one of most used compounds in the tanning industry. Cr(III) concentration in the final solution allows its reuse without concentration, but with a slight dilution. PMID:22326242

  6. Gaseous Air Pollutants and its Environmental EffectEmittedfrom the Tanning Industry at Hazaribagh, Bangladesh

    Directory of Open Access Journals (Sweden)

    Md. Abul Hashem

    2015-05-01

    Full Text Available This article has focused on gaseous air pollutants and its environmental effect-emitted from tanning industry during leather processing, especially in unhairing & liming, deliming, pickling and finishing operations in which hydrogen sulphide (H2S, ammonia (NH3, chlorine (Cl2 and volatile organic compounds (VOCs are emitted respectively at Hazaribagh, Dhaka, Bangladesh. The toxic hydrogen sulphide (H2S gas has negative effect at atmosphere by the process of photochemical reaction; it increases the greenhouse methane gas. In atmosphere, gaseous form of ammonia (NH3 reacts with available acids and form their corresponding salts cause cloudiness and finally they return to earth surface by wet or dry deposition which effects on aquatic life. Workers in tanning industries are directly inhaled toxic chlorine gas suffers withvarious health complexities. Emission of VOCs isthe mostly formaldehyde and it is captured in photochemical oxidation by ozone as well as UV radiation. It’s an important precursor of smog formation where it reacts with oxides of nitrogen (NOx including peroxyacetyl nitrate (PAN; smog decreases the visibility in the urban area.

  7. Tyrosine Hydroxylase is crucial for maintaining pupal tanning and immunity in Anopheles sinensis.

    Science.gov (United States)

    Qiao, Liang; Du, Minghui; Liang, Xin; Hao, Youjin; He, Xiu; Si, Fengling; Mei, Ting; Chen, Bin

    2016-01-01

    Tyrosine hydroxylase (TH), the initial enzyme in the melanin pathway, catalyzes tyrosine conversion into Dopa. Although expression and regulation of TH have been shown to affect cuticle pigmentation in insects, no direct functional studies to date have focused on the specific physiological processes involving the enzyme during mosquito development. In the current study, silencing of AsTH during the time period of continuous high expression in Anopheles sinensis pupae led to significant impairment of cuticle tanning and thickness, imposing a severe obstacle to eclosion in adults. Meanwhile, deficiency of melanin in interference individuals led to suppression of melanization, compared to control individuals. Consequently, the ability to defend exogenous microorganisms declined sharply. Accompanying down-regulation of the basal expression of five antimicrobial peptide genes resulted in further significant weakening of immunity. TH homologs as well as the composition of upstream transcription factor binding sites at the pupal stage are highly conserved in the Anopheles genus, implying that the TH-mediated functions are crucial in Anopheles. The collective evidence strongly suggests that TH is essential for Anopheles pupae tanning and immunity and provides a reference for further studies to validate the utility of the key genes involved in the melanization pathway in controlling mosquito development. PMID:27416870

  8. Evidence for "Uner Tan Syndrome" as a human model for reverse evolution.

    Science.gov (United States)

    Tan, Uner

    2006-12-01

    "Uner Tan Syndrome" was further studied in a second family. There was no cerebellar atrophy, except a mild vermial atrophy in MRI scans of the affected individuals. This is not, however, the pathogenesis of the "Uner Tan Syndrome", since in the first and second families there were bipedal men exhibiting very similar MRI scans. The second family may also be considered a live model for reverse evolution in human beings. The present work provided evidence for a reverse evolution: (i) quadrupedality; (ii) primitive mental abilities including language; (iii) curved fingers during wrist-walking of the quadrupedal woman; (iv) arm to leg ratios being close to those of the human-like apes. The quadrupedal individuals were raised in separate places, so that they could not imitate each other, excluding the socio-cultural factors contributing to the habitual quadrupedal gait. The results are consistent with the single gene theory, suggesting a single gene controlling multiple behavioral traits, and the psychomotor theory, and a co-evolution of the human mind, an emergent property of the motor system expressed by human language. PMID:17145687

  9. Fine tuning in small and large tan beta regions in the cE6SSM

    CERN Document Server

    Binjonaid, Maien Y

    2014-01-01

    The Electroweak sector in E6 supersymmetric models is subject to a degree of fine tuning in the percent to permil level. This can be attributed to the experimental limits on both the mass of the Z' boson associated with the extra U(1)' symmetry in the model, as well as the masses of naturalness-related sparticles (which is a general source of tuning in supersymmetric models). The degree of tuning can be smaller than that in the minimal supersymmetric standard model with universal fundamental parameters (the constrained MSSM). We show this by quantifying the fine tuning in regions of the parameter space of the constrained exceptional supersymmetric standard model (cE6SSM) corresponding to values of tan beta below and above 10. It is found that, a Higgs mass m_h ~ 125 GeV, a gluino mass ~ 1.5 TeV, and a Z' boson mass m_Z' ~ 3.8 TeV correspond to fine tuning in the 0.2% (0.1%) level for tan beta = 30 (5).

  10. Vortex Solutions in Two-Higgs Systems and $\\tan\\beta$

    CERN Document Server

    La, H S

    1993-01-01

    Classical vortex solutions in various two-Higgs systems are studied. The systems we consider include the standard model with two Higgs doublets, in which case the vortex appears as part of a string-like object. The Higgs potentials contain several different couplings in general and the spontaneous symmetry breaking involves with two different vacuum expectation values. In particular it is shown that the existence of such a solution in general requires a specific ratio of the two Higgs vacuum expectation values, i.e. $\\tan\\beta$, and some inequalities between different Higgs couplings. This ratio can be determined in terms of the couplings in the Higgs potential. The Higgs masses are also computed in this case. (1+2)-d solutions are topological so that they are topologically stable and the Bogomol'nyi bound is saturated for some couplings. Some comments on the stabilization of (1+3)-d solutions are also given. Thus, as long as such a defect can be formed in the early universe, stable or not, $\\tan\\beta$ is no ...

  11. FTIR and ellipsometry characterization of ultra-thin ALD TaN films

    International Nuclear Information System (INIS)

    In this paper, Fourier-transform infrared (FTIR) spectroscopy and ellipsometric spectroscopy were used to characterize the optical properties of atomic layer-deposited (ALD) ultra-thin TaN films on a Si(1 0 0) single crystal. The analysis of FTIR spectra indicates that the incorporated impurities are in the form of radicals of NH x, CH x and OH x. SiH x is also detected due to interfacial reactions between NH x and the Si substrate native oxide. These H-containing radicals can be removed by post-annealing the samples. The vibration of Ta-N bonding is at the wavenumber of 1190 cm-1, which is independent of the film thickness and post-annealing temperature. The results of ellipsometric spectra show that the band gaps are 3.28 eV, 2.65 eV and 2.50 eV as the films thicknesses are 1 nm, 5 nm and 10 nm, respectively. A slight red-shift of the band gap takes place after annealing the ultra-thin films. The mechanisms of the film optical properties were analyzed in the paper

  12. Atomic resolution investigations of phase transformation from TaN to CrTaN in a steel matrix

    DEFF Research Database (Denmark)

    Danielsen, Hilmar Kjartansson; Hald, John

    2012-01-01

    In development of 12%Cr high temperature steels used for fossil fired power plants, the precipitation of large Z-phase particles, CrMN, has been identified as a major problem since they replace small and finely distributed MN particles. This causes a premature breakdown in the longterm creep...... atoms diffuse from the steel matrix into TaN precipitates and physically transform them into CrTaN. The crystal structure of the precipitates changes from that of a typical MN NaCl type crystal structure to a Z-phase crystal structure with alternating double layers of Cr and TaN. Since there is a large...... contrast between heavy Ta atoms and light Cr atoms, the ordering of the Cr layers inside the TaN particles can clearly be observed....

  13. Effect of Pretreatment of TaN Substrates on Atomic Layer Deposition Growth of Ru Thin Films

    Institute of Scientific and Technical Information of China (English)

    ZHOU Mi; CHEN Tao; TAN Jing-Jing; RU Guo-Ping; JIANG Yu-Long; LIU Ran; QU Xin-Ping

    2007-01-01

    The polycrystalline ruthenium films are grown on TaN substrates by atomic layer deposition (ALD) using bis(cyclopentadienyl) ruthenium [RuCp2] and oxygen as ruthenium precursor and reactant respectively at a deposition temperature of 330℃. The low-energy Ar ion bombardment and Ru pre-deposition are performed to the underlying TaN substrates before ALD process in order to improve the Ru nucleation. X-ray diffraction,X-ray photoelectron spectroscopy, canning electron microscopy and atomic force microscopy are carried out to characterize the properties of ALD Ru films.The results show that the nucleation density of Ru films with Ar+ bombardment to the underlying TaN substrates is much higher than that of the ones without any pretreatment. The possible reasons are discussed.

  14. Fibromiyalji tanısı konan 100 kadın olgunun klinik özellikleri

    OpenAIRE

    Hayta, Emrullah; Doğan, Ömer Tamer; Ceyhan Doğan, Sevil; Akdeniz, Tahir; Şencan, Dudu; Karakaşlı, Sema; Hizmetli, Sami

    2010-01-01

    ÖzetAmaç. Bu çalışmada fibromyalji sendromu (FMS) tanısı konmuş bayan hastaların klinik özelliklerini, hastayı hekime getiren ilk semptomun hangisi olduğunu ve bu semptomların sıklıklarını incelemeyi amaçladık. Yöntem. Çalışmaya 1990 ACR tanı kriterlerine göre fibromiyalji tanısı konulan 100 kadın hasta dahil edildi. Çalışmaya alınan hastaların yaş, eğitim durumu, ilk semptomu, halsizlik ve yorgunluk, sabah tutukluğu, uyku bozukluğu, anks...

  15. Aplicabilidade de indicador de qualidade subjetivo em Terapia Intensiva Aplicación de indicadores subjectivos de calidad en Terapia Intensiva Application of subjective quality indicators in Intensive Care

    Directory of Open Access Journals (Sweden)

    Sônia Regina de Oliveira e Silva de Souza

    2006-04-01

    Full Text Available Objetivamos descrever a percepção dos clientes em relação à hospitalização na Unidade de Terapia Intensiva (UTI. Desenvolvemos um estudo descritivo com abordagem qualitativa, na UTI de um hospital universitário do Rio de Janeiro, no período de maio/2003 a maio/2004. Participaram do estudo 32 clientes após alta da UTI em condição de narrar sua hospitalização. A coleta dos dados ocorreu por via de um questionário. Consideramos que os clientes demonstraram satisfação a assistência de enfermagem intensivista, o que incomoda são os estressores físicos e ambientais. O estudo aponta questões que necessitam de uma contínua discussão considerando o estresse que permeia as atividades e o ambiente da UTI e destaca a relevância do trabalho com indicadores de qualidade subjetivos em terapia intensiva.Tenemos como objetivo describir la percepión de los clientes en relación a la hospitalización en la Unidad de Cuidados Intensivos. Desarrollamos un estudio descriptivo con enfoque cualitativo en la Unidad de Cuidados Intensivos de un Hospital Universitario de Rio de Janeiro, en el periodo de mayo/2003 a mayo/2004. Participarón del estudio 32 clientes tras la alta de esta Unidad condición de narrar su hospitalización. Los datos fueron recogidos por un cuestionario. Consideramos que los clientes demostrarón satisfacción con respecto a la asistencia de enfermería intensiva y lo que les incomoda son los estreses físicos y ambientales. El estudio apunta cuestiones que necesitan una continua discusión considerando el estrés que rodea las actividades, el ambiente de la Unidade de Cuidados Intensivos y destaca la relevancia del trabajo con ondicativos de calidad subjetivos en Terapia intensiva.Our aim is to describe the clients' perception related to to the admission in the Intensive Care. We have developed a descriptive study based on a qualitative approach in the Intensive Care in a university hospital in RJ, from May, 2003 to May

  16. The Finnish background report for the EC documentation of best available techniques for tanning industry

    Energy Technology Data Exchange (ETDEWEB)

    Kustula, V.; Salo, H.; Witick, A.; Kaunismaa, P.

    2000-08-01

    The objective of this document is to identify best available techniques (BAT) for the reduction of emissions and energy use in the tanning industry in Finland. The leather tanning industry in Finland has long traditions, dating back for centuries, but today there are only nine tanneries of any importance left. The tanneries vary in size from small, family-owned ones to large on a Finnish scale, with a staff of about 70 persons. The production of finished leather in even the largest tannery in Finland is well below the production limit (12 tonnes finished leather a day) mentioned in the IPPC-directive (96/61/EC). The range of products manufactured by the Finnish leather industry is large and includes processed leather for, e.g. footwear, clothing, furniture and intermediate products, e.g. wet-blue and crust. The hides and skins of cows, lamb, elk, reindeer and occasionally skins from other animals, e.g. horses are the main raw materials used. Some of the tanneries carry out only a part of the processing and sell their products in a treated, but not finished state. Tanneries which undertake only a part of the preparation process are reviewed in this document as well. Because of the varying size of the Finnish tanneries, the quality and quantity of emissions and environmental impacts vary considerably. The parameters used by the authorities are suspended solids (SS), biological oxygen demand (BOD), and chromium and sulphide concentration in the effluents. The quantity of waste and waste water generated is also subject to assessment by the authorities. Direct regulation of emissions is practised in Finland by issuing permits containing emission limit values. Major waste streams generated are sludge from waste water treatment plants, animal residues from the beamhouse stage, residues from tanned leather and chemicals used. Various ways of residue separation and consequently reuse and recovery are practised in most Finnish tanneries. The proteinaceous residues from the

  17. El lenguaje médico, algo más que información. De cómo los lingüistas y los médicos pueden entenderse

    Directory of Open Access Journals (Sweden)

    Joaquín García Palacios

    2004-06-01

    Full Text Available La presencia en el lenguaje de un importante componente de poder nos lleva necesariamente a la consideración de la dimensión ética implícita en las tareas que se repiten en cada uno de los actos verbales en que participamos. Cualquier especialista en un ámbito del saber debe ser consciente de cómo funciona el lenguaje en muchos aspectos que directamente le afectan, de cómo la selección de los elementos y su combinación —estén éstas más o menos automatizadas— han de ir dirigidas a la adecuación de un mensaje que no desoriente a su interlocutor. En este artículo se propone una reflexión sobre unas tareas que no se llevan a cabo de una manera ingenua, sobre unos dominios en los que la palabra, además de servir para comunicar algo, tiene dos poderes: el de la acción y también el de la sugestión. Todo un mundo de hechos explícitos e implícitos entra en juego cada vez que alguien se decide a actuar por medio del lenguaje. Un mundo de intenciones y expectativas, de colaboración y compromisos, al que el médico no puede dar la espalda. ------------------------------ Medical language, something more than information. (On how linguists and physicians can understand each other. The fact that language is comprised of an important power component brings us, of necessity, to reflect upon the ethical dimensions of the tasks involved in each and every verbal act we engage in. Specialists in any field should be aware of how language works in many ways that directly affect them, of how the choice of elements and their combination —regardless of how mechanized they may be— should be geared toward crafting a message that does not mislead the interlocutor. This article puts forth ideas on certain tasks that are not performed naively, on domains in which words, besides conveying a message, have two types of power: the power of action and the power of insinuation. An entire universe of explicit and implicit events comes into play whenever

  18. Host range, growth property, and virulence of the smallpox vaccine: Vaccinia virus Tian Tan strain

    International Nuclear Information System (INIS)

    Vaccinia Tian Tan (VTT) was used as a vaccine against smallpox in China for millions of people before 1980, yet the biological characteristics of the virus remain unclear. We have characterized VTT with respect to its host cell range, growth properties in vitro, and virulence in vivo. We found that 11 of the 12 mammalian cell lines studied are permissive to VTT infection whereas one, CHO-K1, is non-permissive. Using electron microscopy and sequence analysis, we found that the restriction of VTT replication in CHO-K1 is at a step before viral maturation probably due to the loss of the V025 gene. Moreover, VTT is significantly less virulent than vaccinia WR but remains neurovirulent in mice and causes significant body weight loss after intranasal inoculation. Our data demonstrate the need for further attenuation of VTT to serve either as a safer smallpox vaccine or as a live vaccine vector for other pathogens

  19. (g-2){sub μ} in the MSSM with tan β → ∞

    Energy Technology Data Exchange (ETDEWEB)

    Bach, Markus; Stoeckinger, Dominik; Stoeckinger-Kim, Hyejung [Institut fuer Kern- und Teilchenphysik, TU Dresden (Germany); Park, Jae-Hyeon [Departament de Fisica Teorica y IFIC, Universitat de Valencia-CSIC (Spain)

    2015-07-01

    We investigate the MSSM for the exotic scenario tan β → ∞ where one of the Higgs doublets does not obtain a vacuum expectation value. This leads to the masses of the down-type fermions being created completely on loop level. The one-loop results for the self energies can be used to calculate the Yukawa couplings which is explicitly done for the muon and utilized to compute the supersymmetric contributions to its anomalous magnetic moment. We identify the parameter regions in which these contributions are capable of explaining the discrepancy between Standard Model prediction and experimental result. Compared to the usual MSSM, this is possible with higher SUSY masses at the expense of a large muon Yukawa coupling. Other constraints like the metastability of the electroweak vacuum are considered as well.

  20. Silvery hair with bronze-tan in a child: A case of Elejalde disease

    Directory of Open Access Journals (Sweden)

    Inamadar Arun

    2007-01-01

    Full Text Available A 5-year-old boy was admitted for severe neurological impairment including hypotonia and loss of consciousness without preceding febrile illness. On examination, he had silver colored hair and bronze-tan over photo-exposed body parts. He was born of consanguineous parents and three of his elder siblings, who died in early childhood, had similar colored hair. Complete blood count and serum immunoglobulin levels were within normal limits. Peripheral blood smear did not show any cytoplasmic granules in neutrophils. Cerebro-spinal fluid examination did not reveal any abnormality. Light microscopic examination of the hair revealed irregular clumping of the melanin throughout the shafts. The patient died on the second day following admission. A clinical diagnosis of Elejalde disease was made. The clinical and genetic overlapping of the three silvery-hair syndromes has been discussed.

  1. Critical current density in thin superconducting TaN film structures

    International Nuclear Information System (INIS)

    The critical current density jC in thin TaN film single-bridge structures with different width from 60 nm to 8 μm has been studied in a wide temperature range from 4.2 K up to TC ≈ 10.2 K. At T → TC, the jC(T) curves of all bridges are described by the temperature dependence of the Ginzburg-Landau de-paring critical current in a temperature range increasing with the decrease in width of the bridges. However the zero-temperature value of the critical current density jCexp(0) used as fitting parameter decreases monotonically with the decrease in width of the bridges below ≈1 μm.

  2. Characteristics of the chrome-tanned sheep leather treated by radiation-induced graft of BA

    International Nuclear Information System (INIS)

    The characteristics of the chrome-tanned sheep leather treated by radiation-induced graft of BA is presented. Using the method of radiation-induced graft of BA instead of the chrome-retanning, the leather has been obviously improved not only in the surface, such as the brightness, fullness, uniformity of the thickness but also in the physical characteristics such as retaining of tensile strength, decreasing of water absorption after being immersed in water for 2h, and 24h, enhancement of tearing strength and stitch tear strength. Although the air permeability and water vapor permeability are a bit worse than the control, however is still in the range of the standard issued by Light Industry Ministry of China

  3. Synthesis and study of MPNS/SMA nano-composite tanning agent

    Institute of Scientific and Technical Information of China (English)

    Hui Pan; Mei Qi; Zhi Jun Zhang

    2008-01-01

    The radical polymerization of maleic anhydride (MA),styrene (ST) with the vinyl groups introduced onto the surface of the nano-sized silica via solution polymerization method was developed.The methacryloxypropyl nano-sized silica (MPNS) was used as macromonomer and polymerized with maleic anhydride and styrene by initiating with BPO in toluene.The structure and properties of MPNS/SMA nano-composite were characterized by FT-IR spectra and TEM.Meanwhile,it was applied as tanning agent compared with the traditional styrene-maleic anhydride copolymer in leather.It was found that the applied leather had better quality characteristics with the addition of the nano-sized silica.

  4. Valoración de activos financieros utilizando Montecarlo: cuando el mundo no es tan normal.

    Directory of Open Access Journals (Sweden)

    Cecilia Amaya Ochoa

    2010-05-01

    Full Text Available Valorar activos financieros cuando el mundo no es tan normal como asumen muchos modelos financieros exige un método flexible para operar con diversas distribuciones, el cual, adicionalmente, pueda incorporar discontinuidades como las que se dan en procesos estocásticos de salto. El método Monte Carlo cumple con esos requisitos, además de generar una buena aproximación y ser eficiente, lo cual lo convierte en el más adecuado para aquellos casos en los cuales no se cumple el supuesto de normalidad. Este artículo explica como se aplica este método para la valoración de activos financieros, particularmente opciones financieras, cuando el activo subyacente sigue un proceso de volatilidad estocástica o de salto-difusión.

  5. Microspore Embryogenesis Through Anther Culture in Citrus clementina Hort. ex Tan.

    Science.gov (United States)

    Chiancone, Benedetta; Germanà, Maria Antonietta

    2016-01-01

    Anther culture is a biotechnological method that allows to obtain, in one step, homozygous plants, very important to plant breeding, due to their numerous applications in mutation research, selection, genome sequencing, genetic analysis, and transformation. To induce the microspores, i.e., the immature male gametes, to switch from the normal gametophytic pathway to the sporophytic one, it is necessary to submit them to a type of stress, such as high or low temperature, starvation, or magnetic field. Stress can be applied to the donor plants and/or the floral buds or the anthers or the isolated microspores, before or during the culture. In this chapter, the protocol to induce gametic embryogenesis from anther culture of several cultivars of Citrus clementina Hort. ex Tan. is reported. PMID:26619882

  6. MUTATION SPECTRA IN SALMONELLA OF SUNLIGHT, WHITE FLUORESCENT LIGHT, AND LIGHT FROM TANNING SALON BEDS: INDUCTION OF TANDEM MUTATIONS AND ROLE OF DNA REPAIR

    Science.gov (United States)

    We evaluated the mutagenicity of sunlight (SUN), uncovered cool white fluorescent light (FLR), and light from a tanning salon bed (TAN) at the base-substitution allele hisG46 of Salmonella in four DNA repair backgrounds (wild type, uvrB, pKM101, and uvrB+pKM101). Approximately 80...

  7. Exploring the Potential of TanDEM-X Data in Rice Monitoring

    Science.gov (United States)

    Erten, E.

    2015-12-01

    In this work, phenological parameters such as growth stage, calendar estimation, crop density and yield estimation for rice fields are estimated employing TanDEM-X data. Currently, crop monitoring is country-dependent. Most countries have databases based on cadastral information and annual farmer inputs. Inaccuracies are coming from wrong or missing farmer declarations and/or coarsely updated cadastral boundary definitions. This leads to inefficient regulation of the market, frauds as well as to ecological risks. An accurate crop calendar is also missing, since farmers provide estimations in advance and there is no efficient way to know the growth status over large plantations. SAR data is of particular interest for these purposes. The proposed method includes two step approach including field detection and phenological state estimation. In the context of precise farming it is substantial to define field borders which are usually changing every cultivation period. Linking the SAR inherit properties to transplanting practice such as irrigation, the spatial database of rice-planted agricultural crops can be updated. Boundaries of agricultural fields will be defined in the database, and assignments of crops and sowing dates will be continuously updated by our monitoring system considering that sowing practice variously changes depending on the field owner decision. To define and segment rice crops, the system will make use of the fact that rice fields are characterized as flooded parcels separated by path networks composed by soil or rare grass. This natural segmentation is well detectable by inspecting low amplitude and coherence values of bistatic acquisitions. Once the field borders are defined, the phenology estimation of crops monitored at any time is the key point of monitoring. In this aspect the wavelength and the polarization option of TanDEM-X are enough to characterize the small phenological changes. The combination of bistatic interferometry and Radiative

  8. Synthesis of Citric-Acrylate Oligomer and its in-Situ Reaction with Chrome Tanned Collagen (hide powder)

    International Nuclear Information System (INIS)

    The purpose of this study was to formulate the new combined system of acrylic and citric acids, which has been prepared by free radical polymerization and esterification reaction at the same time to form citric acrylate (CAC) oligomer through ester linkage and low molecular weight (Mw 2241), in compared with polyacrylic acid. The chemical structure and the reaction mechanism of this oligomer were confirmed by different spectroscopic tools (1H, 13C-NMR, ATR-IR), gel permeation chromatography and thermogravimetric analysis (TGA/DTA). The problem of the effect of the masking agents in the chrome tanning of the collagen and the pickling of the hide has been approached from the study of the hydrothermal and mechanical properties, using this new eco-friendly oligomer, which was carried out in-situ treated/grafted chrome tanned collagen (hide powder), and pickled hide. The microemulsion grafting copolymerization of (CAC) using 2.2-azo-bis isobutyronitrile (ABIN), via direct coupling reaction, onto the chrome tanned collagen showed that the free amino groups of the collagen were considered to be a potential site for the in-situ reaction with (CAC) oligomer. Also, using of citric-acrylate (CAC) oligomer, during chrome tanning of leather, instead of the traditional strong acids (sulfuric, hydrochloric and formic) resulted in significant improvement in chrome exhaustion and physical properties

  9. CLINICAL PROFILE AND EFFICACY OF DIFFERENT MODALITIES IN THE IMPROVEMENT OF HYPERPIGMENTARY DISORDERS AND TANNED SUN EXPOSED SKIN

    OpenAIRE

    Mrityunjay Kumar; Suraj

    2015-01-01

    BACKGROUND : Skin hypermelanosis is a psychologically stressful condition for modern men and women needs improvement with the help of different hypopigmentary agents. OBJECTIVE : C linical Profile and efficacy of different modalities in the Improvement of hyperpigmentary disorders and tanned Sun exposed skin. MATERIAL AND METHODS : Patients of both gender and age diagnosed with hyperpigmentary disorders were enrolled for the study. Patients w...

  10. Magnetic field stimulated enhancement of the barrier for vortex penetration in bended bridges of thin TaN films

    International Nuclear Information System (INIS)

    Highlights: • Critical state in mesoscopic superconducting TaN structures has been studied. • Suppression of the current crowding by magnetic field has been investigated. • Maximum of critical current of bended TaN bridges is at non-zero magnetic field. • The critical current of 90° bended bridges increases by 37% in magnetic field. • Significant bulk pinning is in ultra-thin TaN mesoscopic structures. - Abstract: An increase of the supercurrent density in the vicinity of sharp bends of mesoscopic superconducting strips (the current crowding) leads to a decrease of the potential barrier for vortex penetration and thus to a decrease of the measured critical current IC of the strip in comparison to the de-pairing critical current. However, it has been shown that the Meissner currents induced by an external magnetic field of appropriate direction reduce the effect of current crowding resulting in an increase of the measured IC of superconducting mesoscopic structures with bends. We performed a detailed experimental investigation of the dependence of critical current on magnetic field in straight and bended bridges made from thin TaN films. Indeed, in the case of bridges with bends, the critical current reaches a maximum at non-zero magnetic fields which value increases with an increase of the angle of bends

  11. Heterotrophic bacterial production on solid fish waste: TAN and nitrate as nitrogen source under practical RAS conditions

    NARCIS (Netherlands)

    Schneider, O.; Sereti, V.; Eding, E.H.; Verreth, J.A.J.

    2007-01-01

    The drumfilter effluent from a recirculation aquaculture system (RAS) can be used as substrate for heterotrophic bacteria production. This biomass can be re-used as aquatic feed. RAS effluents are rich in nitrate and low in total ammonia nitrogen (TAN). This might result in 20% lower bacteria yields

  12. Relação do bem-estar subjetivo, estratégias de enfrentamento e apoio social em idosos Relationships of subjective well-being, coping strategies and perceived social support in the elderly

    Directory of Open Access Journals (Sweden)

    Miriam Teresa Domínguez Guedea

    2006-01-01

    Full Text Available Foram analisadas as relações das estratégias de enfrentamento, apoio social e variáveis sócio-demográficas com o bem-estar subjetivo de uma amostra de idosos. O bem-estar foi definido pela satisfação com a vida, os afetos positivos e afetos negativos. Participaram 123 idosos (média = 67,1; desvio padrão = 6,1, residentes em João Pessoa, Brasil. Análises de regressão hierárquica revelaram que (a a satisfação com a vida é maior em mulheres, nas pessoas que recebem pensão, as pessoas que estão satisfeitas com o apoio recebido, as pessoas que dão apoio aos outros e nas pessoas que enfrentam os problemas de forma direta e uma re-avaliação positiva; (b os afetos positivos aumentam com a satisfação do apoio recebido e com o enfrentamento direto e re-avaliativo e a diminuição do enfrentamento de esquiva e (c os afetos negativos diminuem ao dar apoio e aumentam com o enfrentamento de esquiva. Os resultados mostram as diferenças dos componentes cognitivo e afetivo do bem-estar e apontam a necessidade de investigar a autonomia funcional do idoso.Subjective well-being was studied in a sample of the elderly by analyzing the relationship among coping strategies, social support, and social-demographic variables. Well-being was defined by life satisfaction and positive and negative affect. There were 123 elderly participants (mean=67.1; standard deviation=6.1 who were residents in João Pessoa, Brazil. Hierarchical regression analyses revealed that (a life satisfaction is higher in: women, people who receive pensions, people who are satisfied with the support they receive, people who give support to others, and people who cope with problems directly and by re-appraising the situation in a positive way; (b positive affect increases with the satisfaction of the support received, with direct and re-appraisal coping, and with the decrease of coping by avoidance, and (c negative affect decreases with giving support and increases with

  13. Knowledge about Ultraviolet Radiation Hazards and Tanning Behavior of Cosmetology and Medical Students.

    Science.gov (United States)

    Zuba, Ewelina Bogumiła; Francuzik, Wojciech; Malicki, Przemysław; Osmola-Mańkowska, Agnieszka; Jenerowicz, Dorota

    2016-04-01

    Dear Editor, Ultraviolet (UV) radiation is a well-known physical hazard responsible for photoaging, photoallergic, and phototoxic reactions as well as carcinogenesis, including life-threatening melanomas (1,2). Overexposure to both natural and artificial UV radiation is a public health concern. 30% of cancers diagnosed worldwide are skin cancers. Approximately three million non-melanoma skin cancers and 132 000 new cases of melanomas are diagnosed globally each year (3). Sunburns, especially in childhood, are a very important risk factor for melanomas. Several studies demonstrated a positive association between sunbed use and an increased incidence of malignant melanoma (4). Current medical and cosmetology students will soon be knowledge providers about the risks of excessive exposure to UV radiation and prophylaxis of its consequences. Our aim was to evaluate their knowledge about the side effects of ultraviolet radiation and tanning behaviors. Details on the knowledge and habits of students were obtained during classes at the Poznan University of Medical Sciences. With approval from the Institutional Bioethical Committee, a 41-question anonymous survey was conducted in the spring of 2012 among 190 medical (1-6 year) and cosmetology students (1-5 year). The mean age of the study group was 22.3 years (standard deviation (SD) = 2.4 years), range 19-28 years. The survey was composed of closed and open-ended questions prepared by the authors. The first part of the form included demographic data: gender, age, degree course, and school year. The students were also asked about their reaction to sunlight, sunburns in childhood, and personal and family history of skin cancers or dysplastic nevus syndrome. The factual section of the survey contained questions evaluating responder knowledge about sunbeds and risk of UV radiation as well as their personal tanning habits. The open-ended questions asked responders to provide definitions of: skin phototype, sun protection factor

  14. Ação de diferentes agentes curtentes utilizados no curtimento de peles de coelhos: testes físico-mecânicos dos couros = Action of different tanning agents used on rabbit hide tanning: physicalmechanic tests

    Directory of Open Access Journals (Sweden)

    Nilson do Prado Franco

    2009-10-01

    Full Text Available O objetivo do experimento foi avaliar a ação de diferentes agentes curtentes no processamento das peles de coelhos, sobre a resistência do couro. Cinquenta peles de coelhos foram submetidas a diferentes agentes curtentes na etapa de curtimento (T1 = 6% sais de cromoChromossal B®, T2 = 22% tanino vegetal Clarotan-x8®; T3 = 22% tanino sintético Syntac CW®; T4 = 12% tanino vegetal Weibull® + 10% tanino sintético Syntac F®; T5 = 22% tanino vegetal Weibull®. Foram retirados os corpos de prova do couro, na região dorsal, no sentidolongitudinal e transversal em relação ao eixo céfalo-caudal. Os agentes curtentes e retirada dos corpos de prova não influenciaram no teste de tração (9,28 N mm-2 a 11,63 N mm-2 e força aplicada (17,91 N a 24,85 N nos testes. Os curtimentos com sais de cromo (62,85% e Clarotan–x8® (70,28% proporcionaram maiores valores de alongamento em relação aos demais agentes curtentes utilizados. Os corpos de prova do couro no sentido transversal (59,12% apresentaram maior alongamento comparado ao longitudinal (49,72%. Os curtimentos com sais de cromo (22,70 N mm-1, Clarotan–x8® (25,94 N mm-1 e Weibull® (21,58 N mm-1 proporcionaram couros com maior resistência ao rasgamento. O sentido de retirada dos corpos de prova no couro não influenciou no rasgamento progressivo. As técnicas de curtimento com sais de cromo e Clarotan-x8® proporcionaram couros com melhores valores de resistência ao alongamento e rasgamento progressivo.The objective of the experiment was to evaluate the action of different tanning agents in the processing of rabbit hides over skin resistance. Fifty skins of rabbit hides were submitted to different tanning agents in the tanning stage (T1 = 6% Chromossal B® chromesalts; T2 = 22% Clarotan–x8® vegetable tannin; T3 = 22% Syntac CW® synthetic tannin; T4 = 12% Weibull® vegetable tannin + 10% Syntac F® synthetic tannin; T5 = 22% Weibull® vegetable tannin. The specimens were removed

  15. Decontamination of water polluted with oil through the use of tanned solid wastes

    Energy Technology Data Exchange (ETDEWEB)

    Gammoun, A.; Azzi, M. [Hassan II Univ., Casablanca (Morocco). Faculty of Science

    2007-09-15

    The ability of chrome shavings (CS) and buffing dusts of crust leather (BDCL) to remove oily wastes from demineralized water and natural seawater was investigated. The aim of the study was to discover environmentally friendly alternatives for the disposal of solid tannery wastes. The specific surface area of the CS and the BDCL were examined to determine ash content; chromium oxide; fat; and the pH of soluble matter. Scanning electron microscopy (SEM) was then used to examine the structure and morphology of the samples. Three types of oil were used in the experiment: diesel motor oil; premium motor oil; and used motor oil. Sorbent materials were added to a beaker containing 1000 ml of water and 5.5 g of oil. The amount of residual oil in the water was then extracted with petroleum ether. The amount of oil sorbed on the wastes was calculated by subtracting the amount of residual oil in water from the initial mass of oil added to the beakers. Results suggested that the tanned solid wastes efficiently removed the oil from the water. It was concluded that the waste materials were able to absorb many times their weight in oil. 21 refs., 4 tabs., 2 figs.

  16. Phenological tracking og agricultural feilds investigated by using dual polarimetry tanDEM-X images

    Science.gov (United States)

    Mirzaee, S.; Motagh, M.; Arefi, H.; Nooryazdan, A.

    2015-04-01

    Remote sensing plays a key role in monitoring and assessing environmental changes. Because of its special imaging characteristics such as high-resolution, capabilities to obtain data in all weather conditions and sensitivity to geometrical and dielectric properties of the features, Synthetic Aperture Radar (SAR) technology has become a powerful technique to detect small scale changes related to earth surface.SAR images contain the information of both phase and intensity in different modes like single, dual and full polarimetric states which are important in order to extract information about various targets. In this study we investigate phenological changes in an agricultural region using high-resolution X-band SAR data. The case study is located in Doroud region of Lorestan province, west of Iran. The purpose is to investigate the ability of copolar and interferometric coherence extracted from TanDEM-X dual polarimetry (HH/VV) in bistatic StripMap mode for tracking the phenological changes of crops during growing season. The data include 11 images acquired between 12.06.2012 and 02.11.2012 and 6 images acquired between 30.05.2013 and 04.08.2013 in the CoSSC format. Results show that copolar coherence is almost able to follow phenological changes but interferometric coherence has a near constant behaviour with fluctuations mainly related to baseline variations.

  17. Branching ratios, radiative lifetimes, and transition dipole moments for tantalum nitride, TaN

    Science.gov (United States)

    Bouchard, Jacob L.; Steimle, Timothy; Kokkin, Damian L.; Sharfi, David J.; Mawhorter, Richard J.

    2016-07-01

    The dispersed laser induced fluorescence resulting from excitation in the regions of the [17.58]0+ - X1Σ+ (0, 0), [18.42]0+ - X1Σ+ (0, 0), [19.22]1 - X1Σ+ (0, 0), and [19.40]1 - X1Σ+ (0, 0) bands of tantalum nitride, 181TaN, have been recorded and analyzed. The branching ratios and radiative lifetimes for the [17.58]0+(v = 0), [18.42]0+(v = 0), [19.22]1+(v = 0), and [19.40]1(v = 0) states have been determined. From these values the transition dipole moments for visible bands are determined. Vibrational spacing in the X1Σ+ state and the spin-orbit splitting of the a3Δ state are measured and compared with predicted values. The dispersed fluorescence spectra and determined branching ratios reveal that the most effective mechanism for populating the a3Δ1 (J = 1, v = 0) state, which will be used in future P- and T-violation measurements, is via excitation of the [18.42]0+ - X1Σ+ (0, 0) band followed by subsequent spontaneous or stimulated emission.

  18. Heavy Higgs Bosons at Low $\\tan \\beta$: from the LHC to 100 TeV

    CERN Document Server

    Craig, Nathaniel; Li, Ying-Ying; Liu, Tao; Zhang, Hao

    2016-01-01

    We present strategies to search for heavy neutral Higgs bosons decaying to top quark pairs, as often occurs at low $\\tan \\beta$ in type II two Higgs doublet models such as the Higgs sector of the MSSM. The resonant production channel is unsatisfactory due to interference with the SM background. We instead propose to utilize same-sign dilepton signatures arising from the production of heavy Higgs bosons in association with one or two top quarks and subsequent decay to a top pair. We find that for heavier neutral Higgs bosons the production in association with one top quark provides greater sensitivity than production in association with two top quarks. We obtain current limits at the LHC using Run I data at 8 TeV and forecast the sensitivity of a dedicated analysis during Run II at 14 TeV. Then we perform a detailed BDT study for the 14 TeV LHC and a future 100 TeV collider.

  19. Nanomaterials for the cleaning and pH adjustment of vegetable-tanned leather

    Science.gov (United States)

    Baglioni, Michele; Bartoletti, Angelica; Bozec, Laurent; Chelazzi, David; Giorgi, Rodorico; Odlyha, Marianne; Pianorsi, Diletta; Poggi, Giovanna; Baglioni, Piero

    2016-02-01

    Leather artifacts in historical collections and archives are often contaminated by physical changes such as soiling, which alter their appearance and readability, and by chemical changes which occur on aging and give rise to excessive proportion of acids that promote hydrolysis of collagen, eventually leading to gelatinization and loss of mechanical properties. However, both cleaning and pH adjustment of vegetable-tanned leather pose a great challenge for conservators, owing to the sensitivity of these materials to the action of solvents, especially water-based formulations and alkaline chemicals. In this study, the cleaning of historical leather samples was optimized by confining an oil-in-water nanostructured fluid in a highly retentive chemical hydrogel, which allows the controlled release of the cleaning fluid on sensitive surfaces. The chemical gel exhibits optimal viscoelasticity, which facilitates its removal after the application without leaving residues on the object. Nanoparticles of calcium hydroxide and lactate, dispersed in 2-propanol, were used to adjust the pH up to the natural value of leather, preventing too high alkalinity which causes swelling of fibers and denaturation of the collagen. The treated samples were characterized using scanning electron microscopy, controlled environment dynamic mechanical analysis, and infrared spectroscopy. The analytical assessment validated the use of tools derived from colloid and materials science for the preservation of collagen-based artifacts.

  20. Could naphthenic acids be responsible for severe emulsion tightness for a low TAN value oil?

    Energy Technology Data Exchange (ETDEWEB)

    Pauchard, V.; Muller, H.; Al-Hajji, A. [Saudi Aramco, Dhahran (Saudi Arabia). Research and Development Center; Sjoblom, J. [Norwegian Univ. of Technology, Trondheim (Norway). Ugelstad Laboratory; Kokal, S. [Saudi Aramco, Dhahran (Saudi Arabia). EXPEC Advanced Research Center; Bouriat, P.; Dicharry, C. [Univ. de Pau, Pau Cedex (France). Laboratoire des Fluides Complexes, UMR CNRS; Rogers, R. [Florida State Univ., Tallahassee, FL (United States)

    2008-07-01

    This study re-analyzed the emulsion stabilizing properties of a low Total Acid Number (TAN) of a high asphaltene crude oil with respect to the role of naphthenic acids. The emulsion stability depended on the pressure/pH. The high interfacial activity of indigenous acids extracted from the crude oil was determined by means of Ion Exchange Resins and by the high organic acid content in the interfacial material extracted from a sludge emulsion. The physical origin of these phenomenological observations was identified using the Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR-MS) and pendant droplet experiments. The interfacial material was composed of a mixture of asphaltenes and organic acids having a wide range of structures (monoprotic, diprotic, fatty, naphthenic and perhaps aromatic) and molecular weights. The interfacial rheology was a 2D gel with an assumed glass transition temperature of approximately 40 degrees C. It was concluded that a synergistic effect of asphaltenes and organic acids promoted the build up of a very structured interface. This interface is more resistant to droplets coalescence than less structured interfaces. Therefore, the disruption of the interfacial layer requires the drainage of individual molecules as well as a collective yield of the gel.

  1. Pyrolysis of chromium rich tanning industrial wastes and utilization of carbonized wastes in metallurgical process.

    Science.gov (United States)

    Tôrres Filho, Artur; Lange, Liséte Celina; de Melo, Gilberto Caldeira Bandeira; Praes, Gustavo Eduardo

    2016-02-01

    Pyrolysis is the thermal degradation of organic material in oxygen-free or very lean oxygen atmosphere. This study evaluates the use of pyrolysis for conversion of leather wastes from chromium tanning processes into Carbonized Leather Residues (CLR), and the utilization of CLR in metallurgical processes through the production of iron ore pellets. CLR was used to replace mineral coal in proportions of 10% and 25% on fixed carbon basis content in the mixtures for pellets preparation. Experimental conversions were performed on a pilot scale pyrolysis plant and a pelletizing reactor of the "pot grate" type. The results demonstrated the technical feasibility of using the charcoal product from animal origin as an energy source, with recovery of up to 76.47% of chromium contained in CLR in the final produced of iron ore pellets. Pellets with 25% replacement of fixed carbon in the coal showed an enhanced compressive strength, with an average value of 344kgfpellet(-1), compared to 300kgfpellet(-1) for standard produced pellets. PMID:26691602

  2. Variation in flavonoid levels in Citrus benikoji Hort. ex. Tan. infected by Colletotrichum gloeosporioides.

    Science.gov (United States)

    Jeong, Sung Woo; Kim, Hae Gyeong; Park, Semin; Lee, Jung Han; Kim, Yun-Hi; Kim, Gon-Sup; Jin, Jong Sung; Kwak, Youn-Sig; Huh, Moo Ryong; Lee, Ji Eun; Song, Yi; Shin, Sung Chul

    2014-04-01

    Anthracnose caused by Colletotrichum gloeosporioides is one of the most serious postharvest diseases of citrus fruit. Fruit peels infected with C. gloeosporioides and the peels of healthy fruit were analysed for flavonoids, using high performance liquid chromatography-tandem mass spectroscopy, to evaluate variations in flavonoid levels in Citrus benikoji Hort. ex. Tan. Seventeen flavonoids were characterised from the fruit peels. The flavonoids were validated using structurally related standards and quantified. Among the 17 flavonoids, the concentration of component 3 was the highest and that of component 10 was the lowest. During 8 days after inoculation, the concentration of the seven flavonoids 1-3, 5, 6, 13, and 14 increased gradually up to day 8. Flavonoid 4 was detected from day 7. The seven minor flavonoid components, 8-12, 15, and 16 increased to day 5 and then decreased. However, flavonoids level variations were not significantly different from that of the non-infected fruits during the experimental period. The monitoring suggested that the constitutively formed seven polymethoxyflavones (8-12, 15, and 16) may act as phytoanticipins in the defence mechanism against the fungus, and that hespertin 7-O-glucoside (4), produced de novo on day 6 after infection, may function as a phytoalexin. PMID:24262558

  3. Spectrochemical Analysis of Soil around Leather Tanning Industry Using Laser Induced Breakdown Spectroscopy

    Directory of Open Access Journals (Sweden)

    Shakeel Ahmad Khan

    2013-01-01

    Full Text Available We report the use of laser induced breakdown spectroscopy (LIBS to determine the chromium contamination of soil due to effluents from leather tanning industry in Kasur District of Punjab (+31∘6′23.21″, +74∘27′16.29″ in Pakistan. Calibration curves were constructed by indigenously prepared standard sample and fitting of curves by linear regression. The limit of detection (LOD was found to be 23.71 mg kg−1. It has been found that the concentration of chromium in the soil is up to 839 mg kg−1 in vicinity of effluent drain and 1829 mg kg−1 in the area of old stagnant pool, which is much higher than the safe limits. Qualitative detection of other elements like Na, Cl, Fe, P, and Si was done from LIBS spectra. The leaching of soil contaminants due to seepage of industrial effluents from deteriorating brick lined drains in horizontal direction has also been observed.

  4. Complex Mixture-Associated Hormesis and Toxicity: The Case of Leather Tanning Industry

    Science.gov (United States)

    Pagano, Giovanni; Castello, Giuseppe; Gallo, Marialuisa; Borriello, Ilaria; Guida, Marco

    2008-01-01

    A series of studies investigated the toxicities of tannery-derived complex mixtures, i.e. vegetable tannin (VT) from Acacia sp. or phenol-based synthetic tannin (ST), and waste-water from tannin-based vs. chromium-based tanneries. Toxicity was evaluated by multiple bioassays including developmental defects and loss of fertilization rate in sea urchin embryos and sperm (Paracentrotus lividus and Sphaerechinus granularis), and algal growth inhibition (Dunaliella tertiolecta and Selenastrum capricornutum). Both VT and ST water extracts resulted in hormetic effects at concentrations ranging 0.1 to 0.3%, and toxicity at levels ≥1%, both in sea urchin embryo and sperm, and in algal growth bioassays. When comparing tannin-based tannery wastewater (TTW) vs. chromium-based tannery effluent (CTE), a hormesis to toxicity trend was observed for TTW both in terms of developmental and fertilization toxicity in sea urchins, and in algal growth inhibition, with hormetic effects at 0.1 to 0.2% TTW, and toxicity at TTW levels ≥1%. Unlike TTW, CTE showed a monotonic toxicity increase from the lowest tested level (0.1%) and CTE toxicity at higher levels was significantly more severe than TTW-induced toxicity. The results support the view that leather production utilizing tannins might be regarded as a more environmentally friendly procedure than chromium-based tanning process. PMID:19088903

  5. Decontamination of water polluted with oil through the use of tanned solid wastes

    International Nuclear Information System (INIS)

    The ability of chrome shavings (CS) and buffing dusts of crust leather (BDCL) to remove oily wastes from demineralized water and natural seawater was investigated. The aim of the study was to discover environmentally friendly alternatives for the disposal of solid tannery wastes. The specific surface area of the CS and the BDCL were examined to determine ash content; chromium oxide; fat; and the pH of soluble matter. Scanning electron microscopy (SEM) was then used to examine the structure and morphology of the samples. Three types of oil were used in the experiment: diesel motor oil; premium motor oil; and used motor oil. Sorbent materials were added to a beaker containing 1000 ml of water and 5.5 g of oil. The amount of residual oil in the water was then extracted with petroleum ether. The amount of oil sorbed on the wastes was calculated by subtracting the amount of residual oil in water from the initial mass of oil added to the beakers. Results suggested that the tanned solid wastes efficiently removed the oil from the water. It was concluded that the waste materials were able to absorb many times their weight in oil. 21 refs., 4 tabs., 2 figs

  6. Lifestyle, sun worshipping and sun tanning - what about UV-A sun beds?

    International Nuclear Information System (INIS)

    This article considers the effects of ultraviolet (UV) light from the sun and UV-A sun beds on the skin. Sun worshipping and sun therapy has been en vogue for centuries, but in another way than used today. A changing lifestyle has led to an increase of various skin diseases, including skin cancer. Short wave UV-light (UV-B) in particular has been blamed for inducing not only erythema and pigmentation but also more chronic skin lesions. Long wave UV-light (UV-A) has been shown to be the cause of similar changes to the skin but the pigmentation is of another quality and affords less protection against the harmful effects of UV-B. A concept of sun reactive skin typing has been created. This is based on self-reported responses to an initial exposure to sun as regards tanning ability and erythema reaction. These two factors have certain practical consequences, not only for UV-phototherapy but also for a person's risk of developing skin cancer. Recently, several research groups and dermatologists have discouraged extensive use of UV-A sun beds because of side effects of varying degrees of seriousness. The possible implications of these side effects for the organism are not fully elucidated and may be more profound than known today. The British Photodermatology Group has issued more stringent rules for persons who, despite advice to the contrary, still wish to use UV-A sun beds. 14 refs., 1 tab

  7. The TerraSAR-X/TanDEM-X Formation Acquisition-from Planning to Realization

    Science.gov (United States)

    Kahle, Ralph; Schlepp, Benjamin; Meissner, Florian; Kirschner, Michael; Kiehling, Reinhard

    2012-09-01

    On June 21, 2010 the TanDEM-X satellite (TDX) was injected into orbit at 15,700 km distance from its twin satellite TerraSAR-X (TSX), which has been in orbit since 2007. Already one month later TDX acquired a formation with TSX in order to build up the first single-pass radar interferometer in space. Within three years of close formation flying with flexible baselines ranging from 150 m to a few kilometers the twin satellites will collect interferometric radar measurements for the generation of a global digital elevation model with unprecedented accuracy. This paper elaborates on the TDX pre-launch analysis performed in the fields of collision assessment during orbit injection and target formation acquisition. To avoid a critical close approach shortly after TDX separation, the risk of collision between the already flying TSX satellite and the newly injected elements (DNEPR upper-stage, gas dynamic shield, and TDX satellite) had to be carefully analyzed. Further, the paper discusses a fuel-saving formation acquisition strategy, for which the maneuver budget is analyzed as a function of launch day and launch injection accuracy. Finally, flight results are presented to illustrate the successful formation acquisition realized in July 2010 and the formation reconfiguration process from the 20 km wide formation into the 300-400 m close formation performed in October 2010. This reconfiguration marked the start of the bi-static TDX/TSX instrument operation.

  8. Large muon $(g-2)$ with TeV-scale SUSY masses for $\\tan\\beta\\to\\infty$

    CERN Document Server

    Bach, Markus; Stöckinger, Dominik; Stöckinger-Kim, Hyejung

    2015-01-01

    The muon anomalous magnetic moment $a_\\mu$ is investigated in the MSSM for $\\tan\\beta\\to\\infty$. This is an attractive example of radiative muon mass generation with completely different qualitative parameter dependence compared to the MSSM with the usual, finite $\\tan\\beta$. The observed, positive difference between the experimental and Standard Model value can only be explained if there are mass splittings, such that bino contributions dominate over wino ones. The two most promising cases are characterized either by large Higgsino mass $\\mu$ or by large left-handed smuon mass $m_L$. The required mass splittings and the resulting $a_\\mu^\\text{SUSY}$ are studied in detail. It is shown that the current discrepancy in $a_\\mu$ can be explained even in cases where all SUSY masses are at the TeV scale. The paper also presents useful analytical formulas, approximations for limiting cases, and benchmark points.

  9. Soybean plant growth study conducted using purified protein hydrolysate-based fertilizer made from chrome-tanned leather waste.

    Science.gov (United States)

    Pati, Anupama; Chaudhary, Rubina

    2015-12-01

    Leather processing discharges enormous amount of chrome containing leather solid waste which creates a major disposal problem. Chrome-tanned leather solid waste is a complex of collagen and chromium. The presence of chromium limits protein application in fertilizer industry. The purified protein hydrolysate with zero chromium could be used as a nitrogen source for fertilizer formulation. In this study, an attempt has been made to employ purified protein hydrolysate derived from chrome-tanned leather shavings (CTLS) in formulation of fertilizer. The formulated fertilizer (1–3 t ha(-1)) is employed as nitrogen source in production of soybean. Plant growth study demonstrates that formulated fertilizer dosage 3 t ha(-1) produced similar effects of commercial fertilizer-treated plants. Application of formulated fertilizer yielded higher seed in plant than commercial fertilizer. PMID:26498969

  10. Kistik Endometriyal Hiperplazi-Pyometra Kompleks Tanısı Konulan Köpeklerde Serum Adenozin Deaminaz Aktivitesinin Belirlenmesi

    OpenAIRE

    GÜLTİKEN, Nilgün; YARIM, Gül Fatma; Yarim, Murat

    2013-01-01

    Bu çalışmanın amacı, kliniğimize getirilen ve kistik endometriyal hiperplazi (KEH)-pyometra kompleks tanısı konulan köpeklerde serum adenozin deaminaz aktivitesinin belirlenmesi ve sonuçların kan lenfosit ve monosit sayılarıyla ilişkisinin araştırılmasıdır. Çalışmada açık serviks KEHpyometrası bulunan 18 köpek ve diöstrus döneminin ortasında olan 7 sağlıklı köpek olmak üzere toplam 25 köpek kullanıldı. KEH-pyometra tanısı klinik, ultrasonografik ve hematolojik bulgulara dayanılarak konuldu. K...

  11. Cancer incidence and specific occupational exposures in the Swedish leather tanning industry: a cohort based case-control study.

    OpenAIRE

    Mikoczy, Z; Schütz, A; Strömberg, U; Hagmar, L

    1996-01-01

    OBJECTIVE--To study the effect on the incidence of cancer of exposure to chemicals handled in the leather tanning industry. MATERIALS AND METHODS--A case-control study was performed within a cohort of 2487 workers employed for at least six months during the period 1900-89 in three Swedish leather tanneries. 68 cancer cases (lung, stomach, bladder, kidney, nasal, and pancreatic cancers and soft tissue sarcomas) and 178 matched controls were studied. Effects of chemical exposures on cancer inci...

  12. Precise Determination of the Baseline Between the TerraSAR-X and TanDEM-X Satellites

    Science.gov (United States)

    Koenig, Rolf; Rothacher, Markus; Michalak, Grzegorz; Moon, Yongjin

    TerraSAR-X, launched on June 15, 2007, and TanDEM-X, to be launched in September 2009, both carry the Tracking, Occultation and Ranging (TOR) category A payload instrument package. The TOR consists of a high-precision dual-frequency GPS receiver, called Integrated GPS Occultation Receiver (IGOR), for precise orbit determination and atmospheric sounding and a Laser retro-reflector (LRR) serving as target for the global Satellite Laser Ranging (SLR) ground station network. The TOR is supplied by the GeoForschungsZentrum Potsdam (GFZ) Germany, and the Center for Space Research (CSR), Austin, Texas. The objective of the German/US collaboration is twofold: provision of atmospheric profiles for use in numerical weather predictions and climate studies from the occultation data and precision SAR data processing based on precise orbits and atmospheric products. For the scientific objectives of the TanDEM- X mission, i.e., bi-static SAR together with TerraSAR-X, the dual-frequency GPS receiver is of vital importance for the millimeter level determination of the baseline or distance between the two spacecrafts. The paper discusses the feasibility of generating millimeter baselines by the example of GRACE, where for validation the distance between the two GRACE satellites is directly available from the micrometer-level intersatellite link measurements. The distance of the GRACE satellites is some 200 km, the distance of the TerraSAR-X/TanDEM-X formation will be some 200 meters. Therefore the proposed approach is then subject to a simulation of the foreseen TerraSAR-X/TanDEM-X formation. The effect of varying space environmental conditions, of possible phase center variations, multi path, and of varying center of mass of the spacecrafts are evaluated and discussed.

  13. Üner Tan Syndrome: Review and Emergence of Human Quadrupedalism in Self-Organization, Attractors and Evolutionary Perspectives

    OpenAIRE

    Tan, Üner; Tamam, Yusuf; Karaca, Sibel; Tan, Meliha

    2012-01-01

    The first man reported in the world literature exhibiting habitual quadrupedal locomotion was discovered by a British traveler and writer on the famous Baghdat road near Havsa/Samsun on the middle Black-Sea coast of Turkey (Childs, 1917). Interestingly, no single case with human quadrupedalism was reported in the scientific literature after Child's first description in 1917 until the first report on the Uner Tan syndrome (UTS: quadrupedalism, mental retardation, and impaired speech or no spee...

  14. Quality assessment of TanDEM-X DEMs using airborne LiDAR, photogrammetry and ICESat elevation data

    Science.gov (United States)

    Rao, Y. S.; Deo, R.; Nalini, J.; Pillai, A. M.; Muralikrishnan, S.; Dadhwal, V. K.

    2014-11-01

    TanDEM-X mission has been acquiring InSAR data to produce high resolution global DEM with greater vertical accuracy since 2010. In this study, TanDEM-X CoSSC data were processed to produce DEMs at 6 m spatial resolution for two test areas of India. The generated DEMs were compared with DEMs available from airborne LiDAR, photogrammetry, SRTM and ICESat elevation point data. The first test site is in Bihar state of India with almost flat terrain and sparse vegetation cover and the second test site is around Godavari river in Andhra Pradesh (A.P.) state of India with flat to moderate hilly terrain. The quality of the DEMs in these two test sites has been specified in terms of most widely used accuracy measures viz. mean, standard deviation, skew and RMSE. The TanDEM-X DEM over Bihar test area gives 5.0 m RMSE by taking airborne LiDAR data as reference. With ICESat elevation data available at 9000 point locations, RMSE of 5.9 m is obtained. Similarly, TanDEM-X DEM for Godavari area was compared with high resolution aerial photogrammetric DEM and SRTM DEM and found RMSE of 5.3 m and 7.5 m respectively. When compared with ICESat elevation data at several point location and also the same point locations of photogrammetric DEM and SRTM, the RMS errors are 4.1 m, 3.5 m and 4.3 m respectively. DEMs were also compared for open-pit coal mining area where elevation changes from -147 m to 189 m. X- and Y-profiles of all DEMs were also compared to see their trend and differences.

  15. ESR investigations of radiation grafting of methyl methacrylate in aqueous emulsion onto chrome-tanned pig skin

    International Nuclear Information System (INIS)

    Upon γ-irradiation at 77 K of the aqueous emulsions of methyl methacrylate embedded into chrome-tanned pig skins there are formed only the radicals of collagen and of 2-el-2-methylopropionic acid methyl ester. The presence of water in the system increases markedly the radiation yield of collagen radicals. During gradual heating up the polymerization reactions start and the macro-radical of growing polymer is observed. Chromium does not participate in the processes of initiation and grafting. (author)

  16. The benefits and risks of ultraviolet (UV) tanning and its alternatives: the role of prudent sun exposure

    OpenAIRE

    Sivamani, Raja K.; Crane, Lori A.; Dellavalle, Robert P.

    2009-01-01

    Sunlight and indoor ultraviolet (UV) induced tanning is a common behavior, especially among adolescents, young adults, and individuals with lighter skin. Excessive sun exposure is associated with several health risks including the acceleration of skin aging and the promotion of skin cancers, such as basal cell carcinoma, squamous cell carcinoma, and malignant melanoma. However, several health benefits of UV exposure include vitamin D production and improved mood. Herein, we analyze these heal...

  17. UV-generated free radicals (FR) in skin: Their prevention by sunscreens and their induction by self-tanning agents

    Science.gov (United States)

    Jung, K.; Seifert, M.; Herrling, Th.; Fuchs, J.

    2008-05-01

    In the past few years, the cellular effects of ultraviolet (UV) irradiation induced in skin have become increasingly recognized. Indeed, it is now well known that UV irradiation induces structural and cellular changes in all the compartments of skin tissue. The generation of reactive oxygen species (ROS) is the first and immediate consequence of UV exposure and therefore the quantitative determination of free radical reactions in the skin during UV radiation is of primary importance for the understanding of dermatological photodamage. The RSF method (radical sun protection factor) herein presented, based on electron spin resonance spectroscopy (ESR), enables the measurement of free radical reactions in skin biopsies directly during UV radiation. The amount of free radicals varies with UV doses and can be standardized by varying UV irradiance or exposure time. The RSF method allows the determination of the protective effect of UV filters and sunscreens as well as the radical induction capacity of self-tanning agents as dihydroxyacetone (DHA). The reaction of the reducing sugars used in self-tanning products and amino acids in the skin layer (Maillard reaction) leads to the formation of Amadori products that generate free radicals during UV irradiation. Using the RSF method three different self-tanning agents were analyzed and it was found, that in DHA-treated skin more than 180% additional radicals were generated during sun exposure with respect to untreated skin. For this reason the exposure duration in the sun must be shortened when self-tanners are used and photoaging processes are accelerated.

  18. A profitable use of by-products of the poultry slaughter. The tanning of hen’s feet skins

    Directory of Open Access Journals (Sweden)

    Juan Iade Vergara

    2013-01-01

    Full Text Available The aim of this development is to add value to one of the by-products of the poultry slaughtery, the chicken’s feet. The process began with the skinning of the chicken’s feet, which underwent a tanning process to obtain a leather characterised for its similarity with exotic leathers such as the reptile ones. To facilitate its possible production by artisanal means we designed a more environmental-friendly process, eliminating the use of sodium sulfide in the stages corresponding to dehairing and liming, followed by a chromium-free tanning based on a combination of vegetable tannins and synthetic retanning agents. Confirmation of the tanning of the skins was performed by measuring the shrinkage temperature of leathers, obtaining a value of 80 °C, higher than those of the raw hides. Physical properties were evaluated to characterize the product, obtaining tensile strength values of 0,65 kg/mm2 and a tear resistance of 2,10 kg/mm.

  19. 冷杉栲胶的制取及鞣革试验%Extraction-of Fir Bark and Tanning Trial

    Institute of Scientific and Technical Information of China (English)

    陈武勇; 马云志; 刘波

    2001-01-01

    Abies fabri bark, collected from Heshui Forest Area of Yunnan, was extracted by water solution or sulfiting and the tanning extract with water was mooified by sulfjting or syntan. Then the four extracts were used to tan skin under the same conditions to compare their tanning properties. The results of experiments show that the extract extracted by sulfiting in thc process may decrease its combination tannin and tanring number, but it has a lower deposits in tanning solutiorm fast penetration to skin and mild astrigcnce with skin. Furthermore, the resultant leather is fullness, stiffn~s and appearance of lightness. The extract modified by syntan has almost the same tanning properties as the one extracted by sulfiting in the process. In a word, the way to extracted by sulfiting in the process is the best way to prepare tannin extract. Also, the extract modified by syntan should be another choice for its fast penetration and stronger combination.%我国冷杉蓄积量丰富,广泛分布于西南、西北广大林区,开发利用冷杉鞣料具有重要意义。本文采用几种不同的浸提方法制取冷杉栲胶:1)水浸提;2)添加亚硫酸盐,包括在浸提过程中和浸提后的溶液中加入两种方法;3)合成单宁改性。用不同方法制取的栲胶做了鞣革研究,比较其成革性能。试验结果表明,冷杉栲胶经亚硫酸盐和合成单宁处理后,沉淀减少,渗透速度加快,成革丰满坚实,颜色浅淡,鞣革性能得到较大的改善。加亚硫酸盐浸提的栲胶结合鞣质和鞣制系数虽有所下降,但渗透速度却快得多,而日.栲胶的浸提率大,因而列为首选的方法。浓胶加合成单宁的方法因渗透快和结合力较强,也可供选择。

  20. The progress of Chinese Carbon Dioxide Satellite (TanSat): observation design, Retrieval algorithm and validation network

    Science.gov (United States)

    Liu, Y.

    2014-12-01

    The Chinese carbon dioxide observation satellite (TanSat) project is the national high technology research and development program. It is funded by the ministry of science and technology of the people's republic of China and the Chinese Academy of Sciences. TanSat will monitor carbon dioxide in Sun-Synchronous orbit by a hyper resolution grating spectrometer - Carbon Dioxide Sensor. A wide field of view moderate resolution imaging spectrometer - Cloud and Aerosol Polarization Imager (CAPI) will measure the aerosol and cloud properties synchronously. TanSat project turned to Critical Design Phase after Preliminary Design Review on June 2013, and it plan to finish Critical Design Review on December 2014 and launch on July 2016. A multi-bands retrieval algorithm has been developed to approach XCO2 with applying O2A band observation to reduce aerosol and cirrus cloud influence. The state vector list has been modified from previous two-bands algorithm by adding aerosol model parameters, cirrus cloud model parameters and linear correction on O2A bands. Application of TanSat XCO2 retrieval Algorithm on GOSAT Observation (ATANGO) has been developed from multi-bands TanSat algorithm. GOSAT observation has been used in retrieval experiment of ATANGO. A preliminary inter comparison test has been carried out with the XCO2 product of University of Leicester (UoL) full physics algorithm. The bias of 1.2 hPa (~0.1%) and 2.4ppm (~0.6%) of surface pressure and XCO2 between ATANGO and UoL were indicated, and the standard deviation of 2.8hPa (~0.28%) and 1.23ppm (~0.3%) of surface pressure and XCO2 between ATANGO and UoL were found. The Ground-based observation network of XCO2 in China was developed, which include three Fourier transform infrared spectroscopy (IFS-125) over Xinglong, Beijing, Shenzhen, and three Optical Spectrum Analyzers (OSA) over Shangdong, Hainan Island, and Dunhuang, with different latitude and background. The measurement spectrum has been investigated with a

  1. Mitigation of naphthenate related production upsets in high TAN (Total Acid Number) crude oil

    Energy Technology Data Exchange (ETDEWEB)

    Ostojic, Nik [Maersk Oil, Copenhagen (Denmark); Vijn, Pieter; Reiners, Robert [Champion Technologies Europe BV, Delden (Netherlands)

    2012-07-01

    This paper describes a strategy for prediction, evaluation and mitigation of calcium naphthenate related production problems. Developing fields with acidic crude in the North Sea, West Africa, Bohai Bay (China) and Brazil is becoming more common in recent years. The high acid crude contains a considerable amount of naphthenic acids, typically having a Total Acid Number (TAN) higher than 0.5 mg KOH/g. Formation of either hard type 'calcium naphthenate precipitates' or soft type 'sodium carboxylate/emulsions' during crude oil production can lead to severe flow assurance and separation problems. In severe cases this may lead to production shutdowns to clean-up the equipment. A number of different naphthenate mitigation approaches have been published but no one particular approach is considered to be the most efficient as it depends significantly on the particular field conditions. Initially, this problem was addressed by deploying large volumes of (usually organic) acid, but more recently high efficiency low dose naphthenate inhibitors have been introduced. For predicting naphthenate scaling potential, methods were developed to determine the concentration of 1230 Dalton naphthenic tetra acid (ARN acids) in either deposit or crude oil and this information can be used to locate and potentially isolate the problem to a certain reservoir. Also, methods were developed to design suitable low dose naphthenate inhibitors. As these inhibitors are field tested, monitoring is required to ensure the product is performing most efficiently. In cases of tight emulsions however, this is less difficult as the oil dehydration and water quality is affected instantly. Methods were developed to allow monitoring of the calcium naphthenate deposition in field trails, thus allow trending and evaluation of the chemicals performance. After detailed analyses and discussions of the developed methods, a North Sea case history is presented reviewing several years of treating

  2. Tecendo os fios da educação ambiental: o subjetivo e o coletivo, o pensado e o vivido Weaving the threads of environmental education: the subjective and the collective, the thought and the lived

    Directory of Open Access Journals (Sweden)

    Martha Tristão

    2005-08-01

    Full Text Available O pressuposto deste ensaio é o de que, ao longo de sua trajetória, a educação ambiental foi constituindo uma narrativa que lhe é própria. Algumas palavras com sentidos conceituais polissêmicos, como natureza, participação, solidariedade, cooperação, autonomia, interdisciplinaridade e, mais recentemente, sustentabilidade, transdisciplinaridade e transversalidade, fundamentam a Educação Ambiental e fazem parte de seu léxico ou de sua rede semântica. O objetivo é analisar os campos do sentido produzidos por alguns desses termos e a trama de inter-relações entre os sujeitos e suas práticas discursivas, recusando a doutrina da unidade da razão e de um sujeito unitário em direção ao objetivo da perfeita coerência. Como a linguagem forma-se no seio de uma cultura, transita entre o individual/ coletivo, o subjetivo/ cultural, no caso da Educação Ambiental, é carregada de sentidos e de significados de um paradigma emergente, de novos modos de sensibilidades entre utopistas e utopias. É propósito entender se, de fato, a Educação Ambiental, em nome da emancipação, opõe-se ao projeto liberal de uma "razão educadora", de um conhecimento-regulação, de uma educação universal baseada em métodos universais, analisando de modo complexo a função social das narrativas generalistas e/ou denunciatórias. Foi considerado tanto o potencial positivo como os limites analíticos e estratégicos das narrativas que se manifestam de forma auto-referenciais. A preocupação central e conclusiva é: as práticas cotidianas que demandam iniciativas e encaminhamentos podem fazer sentido e criar campos de interface para o exercício de uma Educação Ambiental?The assumption behind this essay is that, throughout its history, environmental education constituted a narrative of its own. Some conceptually polysemic words such as nature, participation, solidarity, cooperation, autonomy, interdisciplinarity, and, more recently, sustainability

  3. Tangaroa TAN0607 cruise report : gas hydrate exploration on the East Coast, North Island, New Zealand

    International Nuclear Information System (INIS)

    R/V Tangaroa's voyage TAN0607, 20 June to 2 July 2006, Wellington/Wellington, was the first-ever research campaign dedicated to studying gas hydrates on the Hikurangi margin. The cruise was a collaboration between GNS Science, the US Naval Research Laboratory, the National Institute of Water and Atmospheric Research, the Universities of Otago, Hawaii, and Rochester (New York), as well as individual scientists from the University of Auckland and the GeoForschungsZentrum Potsdam. We collected high-resolution seismic data, EM 300 swath bathymetry, 3.5 kHz sub-bottom, as well as 12, 38 and 120 kHz water column echosounder data. Piston cores were recovered for pore water chemistry, microbiology, core description, and paleoceanographic analyses. We acquired heatflow data using a violin-bow type probe rented from the Geological Survey of Canada. We also retrieved three dredge samples from the seafloor. Finally, Niskin bottles attached to CTDs were used to collect seawater for water-column chemistry. The cruise focused on two study areas, the Porangahau Ridge offshore of the Wairarapa and the Rock Garden off Hawke's Bay. Seismic data from 2005 showed an amplitude anomaly beneath the Porangahau Ridge that appears to be caused by gas within the regional gas hydrate stability zone and may indicate the presence of highly concentrated gas hydrates in the vicinity. We acquired nine seismic lines across the ridge to constrain the lateral extent of this anomaly. The anomaly seems to develop with folding and may be linked to enhanced fluid flow through the gas hydrate stability field, which in turn may lead to elevated gas hydrate concentration. Pore water chemistry shows a shoaling of the base of the sulfate reduction zone across this feature, indicative of elevated methane flux through the hydrate stability field. There is a distinct thermal anomaly across the Porangahau Ridge, albeit with a complex signature. On the other hand, there are no indications of methane expulsion into

  4. Phenotypic Plasticity through Transcriptional Regulation of the Evolutionary Hotspot Gene tan in Drosophila melanogaster.

    Science.gov (United States)

    Gibert, Jean-Michel; Mouchel-Vielh, Emmanuèle; De Castro, Sandra; Peronnet, Frédérique

    2016-08-01

    Phenotypic plasticity is the ability of a given genotype to produce different phenotypes in response to distinct environmental conditions. Phenotypic plasticity can be adaptive. Furthermore, it is thought to facilitate evolution. Although phenotypic plasticity is a widespread phenomenon, its molecular mechanisms are only beginning to be unravelled. Environmental conditions can affect gene expression through modification of chromatin structure, mainly via histone modifications, nucleosome remodelling or DNA methylation, suggesting that phenotypic plasticity might partly be due to chromatin plasticity. As a model of phenotypic plasticity, we study abdominal pigmentation of Drosophila melanogaster females, which is temperature sensitive. Abdominal pigmentation is indeed darker in females grown at 18°C than at 29°C. This phenomenon is thought to be adaptive as the dark pigmentation produced at lower temperature increases body temperature. We show here that temperature modulates the expression of tan (t), a pigmentation gene involved in melanin production. t is expressed 7 times more at 18°C than at 29°C in female abdominal epidermis. Genetic experiments show that modulation of t expression by temperature is essential for female abdominal pigmentation plasticity. Temperature modulates the activity of an enhancer of t without modifying compaction of its chromatin or level of the active histone mark H3K27ac. By contrast, the active mark H3K4me3 on the t promoter is strongly modulated by temperature. The H3K4 methyl-transferase involved in this process is likely Trithorax, as we show that it regulates t expression and the H3K4me3 level on the t promoter and also participates in female pigmentation and its plasticity. Interestingly, t was previously shown to be involved in inter-individual variation of female abdominal pigmentation in Drosophila melanogaster, and in abdominal pigmentation divergence between Drosophila species. Sensitivity of t expression to

  5. The Anti-enzymatic Hydrolysis Properties of Tanned Collagen%鞣制皮胶原的抗酶解性能研究

    Institute of Scientific and Technical Information of China (English)

    吴从喜; 张金伟; Shalbuev Dmitry; 陈武勇

    2013-01-01

    分别以不同鞣制方法、不同鞣制程度的皮胶原为对象,研究不同蛋白酶对其的酶解作用.通过对酶解溶液中羟脯氨酸和酶解后皮胶原的收缩温度以及对处理后皮胶原的显微结构观察.结果表明:植物鞣和戊二醛鞣制皮胶原比铬鞣皮胶原更能耐中性蛋白酶酶解作用;酸性蛋白酶更易酶解铬鞣皮胶原,碱性蛋白酶更易酶解植鞣皮胶原,而戊二醛鞣皮胶原具有广泛的耐酶解作用.%In this experiment, the properties of anti - enzymatic hydrolysis of three kinds of tanned collagen with different amount of tanning agents were evaluated using different kind of proteases. After the tanned leather hydrolyzed by the enzymes, the hydroxyproline concentration in the solution and the shrinkage temperature of the treated collagen were tested. It was found that the tanned collagen with the vegetable tannin and the glutaraldehyde are more resistant to hydrolysis with the neutral enzyme than chrome ones; the destructive of acidic protease on chrome tanned leather and the destructive of alkaline protease on vegetable tanned leather are more severe; also, the glutaraldehyde tanned leather has a widespread resistance to all types of enzymatic hydrolysis.

  6. Using Improved Statistical Geometrical Features for Tanning Leather Classification%改进的统计几何特征的鞣制皮革图像分类

    Institute of Scientific and Technical Information of China (English)

    张宝剑; 朱艳丽; 刘昶

    2011-01-01

    皮革鞣制是皮革制作工艺中一道重要的工序,鞣剂能改变皮革的物理性能和化学结构,使皮革的纹理和纤维组织排列等发生变化;为客观准确地对皮革纹理、外力作用下纤维排列等进行判断和识别,论文提出了一种改进的统计几何特征(ISGF)的纹理分析方法,并使用Fisher线性分类器和LVQ神经网络对铬鞣和植鞣皮革进行分类实验对比;实验结果表明,该方法比原方法(SGF)计算代价低,能对铬鞣和植鞣皮革进行高效识别,在Fisher线性分类器比LVQ神经网络分类正确率高20%以上,并且即使加入褶皱铬鞣皮革的干扰,其识别率也较高.%In leather production, leather tanning is an important process. Tanning agent can change the physical properties and chemical constitution, causing the leather the texture and the fiber structure arrangement altered. This paper proposes an improved statistical geometrical features (ISGF) to objectively identify leather texture, fibers, etc. , and uses Fisher criterion and LVQ Net to classify chrome tanning and vegetable tanning leather. Experimental results demonstrate that ISGF can effectively discriminate chrome tanning and vegetable tanning leather, which has less computational cost than the original method (SGF), and classification accuracy of Fisher criterion is 20% higher than that of LVQ Net. Its recognition rate is also high for the chrome tanned leather.

  7. CLINICAL PROFILE AND EFFICACY OF DIFFERENT MODALITIES IN THE IMPROVEMENT OF HYPERPIGMENTARY DISORDERS AND TANNED SUN EXPOSED SKIN

    Directory of Open Access Journals (Sweden)

    Mrityunjay Kumar

    2015-08-01

    Full Text Available BACKGROUND : Skin hypermelanosis is a psychologically stressful condition for modern men and women needs improvement with the help of different hypopigmentary agents. OBJECTIVE : C linical Profile and efficacy of different modalities in the Improvement of hyperpigmentary disorders and tanned Sun exposed skin. MATERIAL AND METHODS : Patients of both gender and age diagnosed with hyperpigmentary disorders were enrolled for the study. Patients were registered in to seven different groups and allocated seven modalities. RESULT : There were 129 patients (42 males and 87 females underwent the treatment and remain in follow up for three months. Maximum number of patients with hyperpigmentary disorde rs belongs to age group 21 to 30 years. Females (67.44% are more commonly affected than males (32.56%. Tanning (27.90% was the most common facial condition in which males (55.55% outnumbered females (44.45% due to more sun exposure in males. Melasma ( 23.25% was the second most common conditions. In the present study, among all the treatment modalities glycolic acid is the most s uccessful in terms of results, compliance and satisfaction of the patients. There are minimal and transient side effects and this modality can be applied to any hyperpigmentary condition for improvement of hyperpigmentary complexion. LIMITATION : Larger studies are required to further confirm the efficacy of different regimes for improvement in complexion. CONCLUSION : Tanning was most common facial condition of hyperpigmention after that melasma was second most common cause of hyperpigmention. Glycolic acid peel (35 - 50% is the most successful in terms of results, compliance and satisfaction of the patients.

  8. Removal of Cr(III) from chrome tanning wastewater by adsorption using two natural carbonaceous materials: Eggshell and powdered marble.

    Science.gov (United States)

    Elabbas, Saliha; Mandi, Laila; Berrekhis, Fatima; Pons, Marie Noelle; Leclerc, Jean Pierre; Ouazzani, Naaila

    2016-01-15

    In the present paper, eggshell and powdered marble, two carbonaceous materials, were used to remove Cr(III) ions from a real chrome tanning wastewater. The effects of initial effluent pH, adsorbent dose, contact time and temperature were studied. The maximum uptake of chromium ions was obtained at pH 5.0 with the dose 20 g L(-1) and 12 g L(-1) for eggshell and powdered marble respectively. Adsorption equilibrium was reached after 14 h contact time for eggshell and only after 30 min for powdered marble. Under these conditions, almost 99% Cr(III) was removed from chrome tanning wastewater having an initial concentration of chromium of 3.21 g L(-1). Kinetic data were satisfactorily described by a pseudo-second order chemical sorption model. The equilibrium rate constant was notably greater for powdered marble than for eggshell with 1.142·10(-3) (g mg(-1) min(-1)) and 0.041·10(-3) (g mg(-1) min(-1)) respectively. The adsorption isotherm were well described by a Langmuir model and showed that the interaction of chromium with the two adsorbents surface is a localized monolayer adsorption with a smaller energy constant for the powdered marble than for eggshell (0.020 (L mg(-1)) and 0.083 (L mg(-1)) respectively). The powdered marble was able to adsorb faster a large amount of Cr (III) in comparison to eggshell. The use of a standardized lettuce seed bioassay allowed evaluating a better effectiveness of the Cr adsorption on the powdered marble, removing up to 40% of the treated effluent toxicity than by eggshell 25%. The powdered marble could be considered as an effective, low cost carbonaceous material to be used for chromium removal from tanning wastewater. PMID:26598282

  9. TANNING OF SLUDGE AND ITS INFLUENCE ON THE PRODUCTION OF SEEDLINGS PARICÁ (Schizolobium amazonicum AND THE CHEMICAL PROPERTIES OF SOIL

    Directory of Open Access Journals (Sweden)

    Lorena de Souza Tavares

    2013-08-01

    Full Text Available http://dx.doi.org/10.5902/1980509810547The objective of this study was to assess the influence of the tanning sludge in soil chemical properties and the morphological and nutritional ‘paricá’ seedlings. The experiment was conducted in a greenhouse in a completely randomized design with five replicates, having as a substrate Humic Cambisol, which was characterized chemically and granulometrically, in possession of these results, the soil was previously corrected with lime and NPK. After 100 days of observation, it was analyzed the soil chemical variables (pH, H + Al, Al3+, Ca, Mg, P, K, Na, S, Cr3+, CO, SB, CEC, V, RAS and PST, the morphology plant [height (H, stem diameter (DC, the number of full sheets, the main root length (CR and dry biomass], and the concentrations of N, P, K, Ca, Mg , S, Cr3+ and Na in the plant. The tanning sludge was used as a nutritional supplement in doses of 0.0, 1.5, 3.0, 4.5 and 6.0 g kg-1. The tanning sludge has potential as a corrective of soil acidity, with little significant increase in indicators of salinity, sodicity and Cr3+ content available. However, the use of sludge did not affect the morphological characteristics of seedlings ‘paricá’, but induced an increase in levels K and S in the shoot and Na and S in the root. The greatest concentration of nutrients in ‘paricá’ were obtained with 6.0 g

  10. “Propiedad” y “Propiedad Intelectual”: tan sólo un aire de familia

    OpenAIRE

    Spinella, Liliana

    2011-01-01

    Algunos autores como James W. Harris sostienen que la propiedad intelectual se constituyó como una mera extensión de las normas sobre propiedad en general a un objeto diferente: los bienes intangibles. El presente trabajo se propone desentrañar el significado de los conceptos “propiedad” y “propiedad intelectual” a fin de demostrar que implican sentidos diferentes, y tan sólo guardan entre sí un aire de familia. Se explicará que las diferencias se deben, en primer lugar, a la multivocidad del...

  11. The influence of Chromium supplied by tanning and wet finishing processes on the formation of cr(vi) in leather

    OpenAIRE

    W. F. Fuck; M Gutterres; N. R. Marcílio; S. Bordingnon

    2011-01-01

    Chromium used in leather manufacturing can be oxidized from the trivalent to the hexavalent state, causing environmental concerns. In this study, the influence of Cr(III) from tanning, deacidification pH, fatliquors, chrome retanning and vegetable retanning on the formation of Cr(VI) in leather was analyzed by comparing natural and aged samples. In wet-blue leather, even after aging and in fatliquored leathers that did not suffer the aging process, the presence of Cr(VI) was always below the ...

  12. Investigation On Natural Background Radioactivity At TanLong, Lagi, BinhThuan Residential Area On Ilmenite Deposit Location

    International Nuclear Information System (INIS)

    An Ilmenite deposit zone located at TanLong, Lagi, Binh Thuan province. After the year of 2000, a new village of population has set up at this place. To estimate the effect on the human health of radioactivity accompanying with the deposit, the sand samples were collected and natural radioactive analyzed at center for nuclear techniques. The average year doses Dannual, hazard radiation exposed index Hex and Radium equivalence Raeq were calculated based on the natural radioactivities. The results show that these factors are overcome the international average as well as southern Vietnam values. (author)

  13. 'Facing Forward' with found footage: displacing colonial footage in 'Mother Dao' and the work of Fiona Tan

    OpenAIRE

    Noordegraaf, J.

    2009-01-01

    The re-presentation of audiovisual material is a means to bring documents of the past into the present. The displacement of existing images from one context to another entails a change of meaning, that can make us see the past in a new light. This paper studies the reuse of colonial footage from the Dutch East-Indies in the compilation film Mother Dao, the turtlelike by documentary filmmaker Vincent Monnikendam (the Netherlands, 1995) and in the work of visual artist Fiona Tan. The analysis o...

  14. Charged and neutral minimal supersymmetric standard model Higgs boson decays and measurement of tan at the compact linear collider

    Indian Academy of Sciences (India)

    E Coniavitis; A Ferrari

    2007-11-01

    The minimal supersymmetric extension of the standard model (MSSM) predicts the existence of new charged and neutral Higgs bosons. The pair creation of these new particles at the multi-TeV + − compact linear collider (CLIC), followed by decays into standard model particles, were simulated along with the corresponding background. High-energy beam–beam effects such as ISR, beamstrahlung and hadronic background were included. We have investigated the possibility of using the ratio between the number of events found in various decay channels to determine the MSSM parameter tan and we have derived the corresponding statistical error from the uncertainties on the measured cross-sections and Higgs boson masses.

  15. Improving the TanDEM-X Digital Elevation Model for flood modelling using flood extents from Synthetic Aperture Radar images

    OpenAIRE

    Mason, David C.; Trigg, Mark; Garcia-Pintado, Javier; Cloke, Hannah L.; Neal, Jeff C.; Bates, Paul D.

    2016-01-01

    The topography of many floodplains in the developed world has now been surveyed with high resolution sensors such as airborne LiDAR (Light Detection and Ranging), giving accurate Digital Elevation Models (DEMs) that facilitate accurate flood inundation modelling. This is not always the case for remote rivers in developing countries. However, the accuracy of DEMs produced for modelling studies on such rivers should be enhanced in the near future by the high resolution TanDEM-X WorldDEM.In a pa...

  16. On the use of the Pareto ArcTan distribution for describing city size in Australia and New Zealand

    Science.gov (United States)

    Gómez-Déniz, Emilio; Calderín-Ojeda, Enrique

    2015-10-01

    The circular inverse of the tangent function is used to simply derive a generalization of the Pareto distribution, the Pareto ArcTan (PAT) distribution. This model includes as limiting cases Pareto and Zipf distributions. This new probabilistic family is used to describe city size data for Australia and New Zealand. Urban agglomerations of these two countries presents similar features, a few large metropolitan areas with a steadily increasing population in the last years and many small cities. The PAT distribution improves the performance of other traditionally used models in urban agglomeration economics such as the classical Pareto, lognormal and the recently proposed Pareto positive stable.

  17. Studies of obtaining and stability in aqueous medium of new complex compounds of Ti(IV) and Zr(IV) used in ecological leather tanning

    Science.gov (United States)

    Crudu, Marian; Sibiescu, Doina; Rosca, Ioan; Sutiman, Daniel; Vizitiu, Mihaela

    2009-01-01

    In this paper, the study of obtaining new coordination compounds of Ti(IV) and Zr(IV) using as ligand: D,L-β-iso-butyric acid, is presented. Also, the stability of these compounds in aqueous medium is studied. The studies of obtaining and of stability of the new compounds were accomplished in aqueous solutions using methods characteristic for coordination compounds: conductance and pH measurements. The combination ratios and the stability were determined with methods characteristic for studies in solutions. From experimental data resulted that the combination ratio of central metallic atoms with the ligand derived from D,L-β-iso-butyric acid was 1:2. From experimental data resulted that in strong acid and strong basic mediums, the coordination compounds could not be obtained. The optimal stability of the studied compounds is limited between 3-6, pH - values. This fact is in accordance with the conditions of using these compounds in ecological leather tanning. Of great importance is that these compounds were used with very good results in tanning processes of different types of leather. This fact evidenced that the ecological alternative of tanning is better than non-ecological tanning using chrome compounds. The importance of this paper consists in obtaining new coordination compounds that can be used in ecological leather tanning.

  18. The effect of the anoxic radiosensitizing agent Tan on induction of revertants by γ-rays and helium ions in salmonella tester strains

    International Nuclear Information System (INIS)

    The modification effect of the anoxic radiosensitizer TAN on the mutagenesis in various Salmonella tester strains after γ-ray and helium ion irradiation was studied. The oxygen enhancement ratios (OER) for all 3 strains on the lethal assay after γ-irradiation is approximately equal to 2. The induction of reversions in TA98 and TA100 does not modify under anoxia. The value of OER on mutagenic assay in TA102 equals 1.6. The OER after helium ion irradiation on the lethal and mutagenic assay was less than after γ-irradiation. The mutagenesis in 3 strains after irradiation under anoxia enhances by TAN. The value of TAN modification effects after γ-irradiation increases from 2.1±0.2 for TA102 to 5±0.4 for TA100. However, TAN influence on mutagenesis in TA100 after helium ion irradiation decreases to 3.1±0.3. We conclude that peculiarities of mutagenesis in various tester strain under anoxia with TAN can be explained by considering the nature of premutational DNA damages. 23 refs.; 2 figs.; 2 tabs

  19. Tan Sri Dato’Megat Zaharuddin当选为马来西亚橡胶局主席

    Institute of Scientific and Technical Information of China (English)

    黄艳(译)

    2009-01-01

    2009年2月16日Tan Sri Dato’Megat Zaharuddin当选为马来西亚橡胶局(MRB)的新主席。他接任Datu Dr Micheal Dosim Lunjew(2008年12月31日卸任)。Tan Sri Dato’Megat拥有逾35年的在国际石油、天然气和化学物品方面的业务工作经验。他曾任土耳其壳牌公司的首席执行官和总经理、马来西亚壳牌有限公司的主席和首席执行官、马来西亚国家科学中心主席、马来西亚通信公司Maxis Communications Berhad的非执行董事、马来西亚银行Maybank Berhad的董事等。

  20. Oncolytic and immunologic cancer therapy with GM-CSF-armed vaccinia virus of Tian Tan strain Guang9.

    Science.gov (United States)

    Deng, Lili; Fan, Jun; Guo, Mingming; Huang, Biao

    2016-03-28

    Targeted oncolytic vaccinia viruses are being developed as a novel strategy in cancer therapy. Arming vaccinia viruses with immunostimulatory cytokines can enhance antitumor efficacy. Such engineered oncolytic viruses, like JX-594, a Wyeth strain vaccinia virus modified with human granulocyte-macrophage colony-stimulating factor (GM-CSF), have shown promising results and have proceeded rapidly in clinical trials. However, the oncolytic potential of the Chinese vaccine strain Tian Tan (VTT) has not been explored. In this study, we constructed a targeted oncolytic vaccinia virus of Tian Tan strain Guang9 (VG9) expressing murine GM-CSF (VG9-GMCSF) and evaluated the antitumor effect of this recombinant vaccinia virus in a murine melanoma model. In vitro, viral replication and cytotoxicity of VG9-GMCSF was as potent as VG9; in vivo, VG9-GMCSF significantly inhibited the growth of subcutaneously implanted melanoma tumors, prolonged the survival of tumor-bearing mice, and produced an antitumor cytotoxic response. Such antitumor effect may be due to the lytic nature of virus as well as the stimulation of immune activity by GM-CSF production. Our results indicate that VG9-GMCSF induces strong tumoricidal activity, providing a potential therapeutic strategy for combating cancer. PMID:26803055

  1. The influence of Chromium supplied by tanning and wet finishing processes on the formation of cr(vi in leather

    Directory of Open Access Journals (Sweden)

    W. F. Fuck

    2011-06-01

    Full Text Available Chromium used in leather manufacturing can be oxidized from the trivalent to the hexavalent state, causing environmental concerns. In this study, the influence of Cr(III from tanning, deacidification pH, fatliquors, chrome retanning and vegetable retanning on the formation of Cr(VI in leather was analyzed by comparing natural and aged samples. In wet-blue leather, even after aging and in fatliquored leathers that did not suffer the aging process, the presence of Cr(VI was always below the detection limit of 3 mg/kg. Considering the presence of Cr(VI, the supply of chromium during the retanning step had a more significant effect than during the tanning. In the fatliquoring process with sulfites, fish and synthetic fatliquor leather samples contained Cr(VI when aged, and the highest concentration detected was 26.7 mg/kg. The evaluation of Cr(VI formation led to recommendations for regulation in the leather industry.

  2. Stoichiometry behavior of TaN, TaCN and TaC thin films produced by magnetron sputtering

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, M. [Centro de Nanociencia y Nanotecnología, Universidad Nacional Autónoma de México, A.P. 2681, C.P. 22860, Ensenada, B.C. (Mexico); Castillo, H.A. [Centro de Enseñanza Técnica y Superior, CETYS Universidad, Campus Tijuana, Tijuana, B.C. (Mexico); Restrepo-Parra, E., E-mail: erestrepopa@unal.edu.co [Universidad Nacional de Colombia Sede Medellín Colombia, Facultad de Minas, Manizales (Colombia); De La Cruz, W. [Centro de Nanociencia y Nanotecnología, Universidad Nacional Autónoma de México, A.P. 2681, C.P. 22860, Ensenada, B.C. (Mexico)

    2013-08-15

    Thin films were synthesized in a magnetron sputtering system using a target of Ta with 99.99% purity and silicon substrates (1 1 1). The gases used for the film growth were (Ar + N{sub 2}), (Ar + CH{sub 4} + N{sub 2}) and (Ar + CH{sub 4}) mixtures for TaN, TaCN and TaC, respectively. The substrate temperature increased from room temperature to 500 °C. The chemical composition and bonding configuration were examined using X-ray photoelectron spectroscopy (XPS), revealing Ta-N, Ta-C-N, Ta-C and C-C bonds. Moreover, the crystallographic structure was analyzed using X-ray diffraction (XRD), indicating the presence of (1 1 1) and (2 0 0) planes belonging to a face-centered cubic structure. The stoichiometry variation dependence on the CH{sub 4} and N{sub 2} flow was analyzed, and the influence of the substrate temperature on the coatings was investigated. Finally, scanning electron microscopy (SEM) was used to determine the evolution on the grain formation in the coatings as the substrate temperature increased.

  3. Studying the pollution of Barada river environment with poisonous elements resulting from leather industry (i.e. tanning industry)

    International Nuclear Information System (INIS)

    The impact of tanning and electroplating industry on the eastern part of Barada river environment has been evaluated. Sediment, soil and plant samples were collected from nine sites at the river near the eastern industrial complex during 1999. Results of instrumental neutron activation analysis have shown high levels of chrome in sediment collected near the tanning factories; the highest value obtained being 2692 ppm. In addition, relatively high levels of Cr were also found in the agriculture soil collected near the riverbank in the industrial complex; Cr concentrations in plant leaves grown at riverbank were found low and this due strong bounding of Cr to soil. Other trace metals such as copper was about 4000 ppm, which is much higher than the natural levels; electroplating shops are the main source of this element in the area. Furthermore, concentrations of the studied trace metals have decreased as the elements were found to be at low concentrations, but the obtained data can be used as a baseline for future monitoring. (Author)

  4. Simultaneous preconcentration of Cd, Cr and Hg in seaweeds by cloud point extraction using PAN/TAN and neutron activation

    International Nuclear Information System (INIS)

    A simple one-step green chemistry method for the simultaneous preconcentration of Cd, Cr, and Hg in seaweed samples has been developed. The method is based on the separation phenomenon of non-ionic surfactant polyoxyethylene nonyl ether (PONPE-20) in aqueous solutions after the formation of a complex with a mixture of two chelating agents, namely, 1-(2-pyridylazo)-2-naphthol (PAN) and 1-(2-thiazolylazo)-2-naphthol (TAN). The chemical variables affecting the separation phase were optimized. The recoveries of these elements under the optimum conditions, namely pH=8.5, (PAN/TAN)=1x10-4 M, (PONPE-20)=0.1% (wt) , ionic strength=0.05 M KNO3, T=40 deg C, and preconcentration of 20-30 mL of sample solutions, were found to be >98%. The samples were irradiated in the inner sites of the Dalhousie University SLOWPOKE-2 reactor (DUSR) facility at a thermal neutron flux of 2.5 x 1011 cm-2 s-1

  5. Changes in serum 25-hydroxyvitamin D and cholecalciferol after one whole-body exposure in a commercial tanning bed

    DEFF Research Database (Denmark)

    Langdahl, Jacob H; Schierbeck, Louise Lind; Bang, Ulrich Christian;

    2012-01-01

    We wanted to evaluate the cutaneous synthesis of 25OHD and cholecalciferol after one whole-body exposure to ultraviolet radiation type B (UVB) in a randomized setup. Healthy volunteers were randomized to one whole-body exposure in a commercial tanning bed with UVB emission (UVB/UVA ratio 1.......8-2.0%) or an identical placebo tanning bed without UVB. The output in the 280-320 nm range was 450 µW/cm(2). Blood samples were analyzed for 25OHD and cholecalciferol at baseline and during 7 days after treatment. We included 20 volunteers, 11 to UVB and 9 to placebo treatment. During the first 6 h, no...... significant differences in 25OHD between the groups were found. At the end of the study, we found a mean increase of 25OHD in the UVB group of 4.5 nmol/l (SD 7 nmol/l) compared to a decline of -1.2 nmol/l (SD 7 nmol/l) in the placebo group (p = 0.1). A linear mixed model yielded an increase of 25OHD in the...

  6. Ultraviolet spectral distribution and erythema-weighted irradiance from indoor tanning devices compared with solar radiation exposures.

    Science.gov (United States)

    Sola, Yolanda; Baeza, David; Gómez, Miguel; Lorente, Jerónimo

    2016-08-01

    Concern regarding the impact of indoor tanning devices on human health has led to different regulations and recommendations, which set limits on erythema-weighted irradiance. Here, we analyze spectral emissions from 52 tanning devices in Spanish facilities and compare them with surface solar irradiance for different solar zenith angles. Whereas most of the devices emitted less UV-B radiation than the midday summer sun, the unweighted UV-A irradiance was 2-6 times higher than solar radiation. Moreover, the spectral distributions of indoor devices were completely different from that of solar radiation, differing in one order of magnitude at some UV-A wavelengths, depending on the lamp characteristics. In 21% of the devices tested, the erythema-weighted irradiance exceeded 0.3Wm(-2): the limit fixed by the European standard and the Spanish regulation. Moreover, 29% of the devices fall within the UV type 4 classification, for which medical advice is required. The high variability in erythema-weighted irradiance results in a wide range of exposure times to reach 1 standard erythemal dose (SED: 100Jm(-2)), with 62% of devices requiring exposures of solar UV-A dose. PMID:27318601

  7. Effects of Substrate Bias on the Hardness and Resistivity of Reactively Sputtered TaN and TiN Thin Films

    Science.gov (United States)

    Lu, Junqing; Arshi, Nishat

    2016-06-01

    TaN and TiN films are being widely used as conductive layers in electronic devices or protective coatings on metal surfaces. Among various deposition methods, reactive magnetron sputtering is preferred partly due to its ability to control the energy of the depositing ions by applying different substrate bias voltages. In this study, TaN and TiN films were deposited on Si/SiO2 substrates by using direct current magnetron sputtering technique with 370 W target power at 1.9 mTorr and under different substrate biases. The effects of the substrate bias on both the resistivity and the hardness of the deposited TaN and TiN films were investigated. The phase and composition of the deposited films were investigated by x-ray diffraction, the resistivity was measured by a four-point probe, and the hardness was obtained by nano-indentation. For TaN films, the use of substrate bias not only increased the hardness but also increased the resistivity. Moreover, the formation of the Ta3N5 phase at the -300 V substrate bias significantly increased the TaN film resistivity. For TiN films, the optimum resistivity (minimum) of 19.5 µΩ-cm and the hardness (maximum) of 31.5 GPa were achieved at the -100 V substrate bias. Since the phase changes occurred in both the TaN and the TiN films at higher substrate biases and these phase changes negatively affected the resistivity or hardness property of the films, the substrate bias should not significantly exceed -100 V.

  8. Design and methods for a cluster randomized trial of the Sunless Study: A skin cancer prevention intervention promoting sunless tanning among beach visitors

    Directory of Open Access Journals (Sweden)

    Merriam Philip

    2009-02-01

    Full Text Available Abstract Background Skin cancer is the most prevalent yet most preventable cancer in the US. While protecting oneself from ultraviolet radiation (UVR can largely reduce risk, rates of unprotected sun exposure remain high. Because the desire to be tan often outweighs health concerns among sunbathers, very few interventions have been successful at reducing sunbathing behavior. Sunless tanning (self-tanners and spray tans, a method of achieving the suntanned look without UVR exposure, might be an effective supplement to prevention interventions. Methods and Design This cluster randomized trial will examine whether a beach-based intervention that promotes sunless tanning as a substitute for sunbathing and includes sun damage imaging and sun safety recommendations is superior to a questionnaire only control group in reducing sunbathing frequency. Female beach visitors (N = 250 will be recruited from 2 public beaches in eastern Massachusetts. Beach site will be the unit of randomization. Follow-up assessment will occur at the end of the summer (1-month following intervention and 1 year later. The primary outcome is average sunbathing time per week. The study was designed to provide 90% power for detecting a difference of .70 hours between conditions (standard deviation of 2.0 at 1-year with an intra-cluster correlation coefficient of 0.01 and assuming a 25% rate of loss to follow-up. Secondary outcomes include frequency of sunburns, use of sunless tanning products, and sun protection behavior. Discussion Interventions might be improved by promoting behavioral substitutes for sun exposure, such as sunless tanners, that create a tanned look without exposure to UVR. Trial registration NCT00403377

  9. Hide Tanning and Its Use in Taiga: The Case of the Orochen-Evenki Reindeer Herders and Hunters of Zabaikalye (East Siberia

    Directory of Open Access Journals (Sweden)

    Donatas Brandišauskas

    2010-12-01

    Full Text Available This article documents the way in which the Orochen-Evenki hunters and herders in northern part of Zabaikalye tan hides and produce gear in the post-Soviet era. Here, I wish to present the argument that it is difficult to understand the reviving of hide tanning in remote villages and the taiga without understanding how hunters and herders in this region adapt to the unstable post-Soviet environment. I suggest that hunters and herders aim to maintain their autonomy from goods and resources imported from cities, and, in spending little effort connecting with state powers in this way, securing their lives from socio-economic constraints.

  10. Wet skins tanning with chromium in dense CO{sub 2} under pressure; Tannage au chrome de peaux humides en CO{sub 2} dense sous pression

    Energy Technology Data Exchange (ETDEWEB)

    Saldinari, L. [Tanneries Roux SA, 26 - Romans Sur Isere (France)]|[Tanneries du Puy (France)]|[Tanneries d' Annonay, 07 (France); Dutel, Ch. [Societe ATC (France); Perre, Ch. [CEA Centre de Pierrelatte (DCC/DTE/SLC), 26 (France)

    2000-07-01

    An ancestral gesture steadily improved through the centuries, the transformation of skins into leather includes several stages of which the principal one is tanning. Today, 90 % of the world's leather products are tanned with chromium. However, this stage is an environmental liability, and reducing the volume and chromium content of the waste has become a major issue. A first study on skin degreasing by dense CO{sub 2} helped sharply reduce the volume of the fatty effluents. To replace water by dense CO{sub 2} as the tanning medium was the logical next step. The present study was carried out in cooperation with three tanneries in the Rhone-Alpes-Auvergne area of France and a manufacturer of tanning materials. The difficulty of the study was the chemically opposed character of the two media involved. CO{sub 2} is a non-polar and lipophilic solvent while inorganic chromium is insoluble. The water present in the treated skin is a polar and ionic reaction medium and one of the reagents in tanning chemistry. The mixture of these two partially miscible compounds gives a pH 3 by carbonic acid formation. Tanning is based on the reactivity of collagen, the main component of the skin, with hydroxylated complexes of chromium. Collagen is a protein containing some chemical functions, amines (R-NH{sub 2}) and carboxylic (R-COOH) for example. These functions impart an amphoteric character to the compound. The WERNER theory of complex salts explains the formation of hydroxylated complexes of chromium and their fixing on the carboxylic functions of collagen by oxolation. pH is the key parameter in tanning. The success of the process demands chromium impregnation without fixing it at a pH lower than 5, and then to fix it by increasing the pH. This opened two alternatives for transferring chromium in the skin: solubilize chromium in CO{sub 2} via soluble organometallic complexes; or put the chromium salt into suspension without solubilizing it. The best results were obtained

  11. Betwixt and Between Past and Present: Cultural and Generic Hybridity in the Fiction of Amy Tan and Mary Yukari Waters

    Directory of Open Access Journals (Sweden)

    Rania Youssef

    2013-10-01

    Full Text Available Amy Tan and Mary Yukari Waters are both Asian-Americans who portray hybridity in their short stories which depict the shifting identities of the self. But do the internal categories of gender, race and ethnicity help in the coherence or do they add to the fragmentation of diverse identities? It is the dynamics of this critique of multiple identification and hybrid cultures that is being traced here in this study and how all this is reflected in narrative responses to such conditions of the examination of the self and, on a broader scale, community. The study builds on Victor Turner’s theory of liminality. Key words Hybridity, liminality, multiple identity, race, culture.

  12. Determination of Cr2O3 in chrome-tanned leather by radionuclide-excited X-ray fluorescence analysis

    International Nuclear Information System (INIS)

    Preliminary results on the determination of Cr2O3 in chrome-tanned leather by measuring the content of Cr by means of radionuclide-excited XRF analysis are reported. For excitation a 3.7 GBq 238Pu source was used and the characteristic K X-rays of Cr were detected with a planar Si(Li) detector. Both smooth and rough sides of the leather were analyzed directly or with a pair of V/Ti balanced filters. A fairly good correlation was found between Cr Kx counts of the rough side and the Cr2O3 concentrations determined chemically in the range of 3.5 to 6.0% Cr2O3. The method renders possible a rapid and non-destructive determination of Cr2O3 in various leather samples. (author)

  13. Poultry feed based on protein hydrolysate derived from chrome-tanned leather solid waste: creating value from waste.

    Science.gov (United States)

    Chaudhary, Rubina; Pati, Anupama

    2016-04-01

    Leather industry generates huge amount of chrome-containing leather solid waste which creates major environment problems to tanners worldwide. Chrome-tanned leather solid waste is primarily chromium complex of collagen protein. The presence of chromium limits its protein application in animal feed industry. The purified protein hydrolysate with zero chromium could be used in poultry feed. In this study, an attempt has been made to assess performance of poultry with purified protein hydrolysate as a feed derived from chrome-tanned leather waste as partial replacement of soyabean meal as a sole source of protein for growing broiler chickens. Growth study was conducted to evaluate the effect of feeding protein hydrolysate on performance and physiochemical characteristics of meat of broiler chickens. Two experimental diets containing various levels of protein hydrolysate (EI-20 % and EII-30 %) were evaluated. The comparative study was performed as control with soyabean meal. Daily feed intake, body weight gain and feed conversion ratio were measured from day 8 to day 35. At the end of the study, birds were randomly selected and slaughtered to evaluate for physiochemical characteristics of meat. Diet had significant effects on feed intake and body weight gain. Birds fed with 20 and 30 % protein hydrolysate consumed 9.5 and 17.5 % higher amount of feed and gained 6.5 and 16.6 % higher than soyabean meal-fed birds. The current study produced evidence that protein hydrolysate can replace up to 75 % of soyabean meal in broiler diets without affecting either growth performance or meat characteristics. PMID:26931657

  14. Eleições, mesários e subjetividade: reflexões sobre a produção de sentidos subjetivos a partir da participação voluntária no processo de votação Elections, poll workers and subjectivity: reflections on the production of subjective sense from the voluntary participation in the process of voting

    Directory of Open Access Journals (Sweden)

    Aigline de Menezes Paes Vervloet

    2011-08-01

    Full Text Available Apesar dos avanços no processo eleitoral brasileiro e do aumento de mesários voluntários, erros e comportamentos inadequados, que embaraçam ou impedem o exercício do voto, continuam ocorrendo. De modo a estabelecer uma reflexão que contribua para a melhor compreensão do problema, propôs-se analisar os sentidos subjetivos que emergem frente à participação desses voluntários. Adotou-se como marco teórico, epistemológico e metodológico, a Teoria Histórico-Cultural da Subjetividade, de González Rey. A pesquisa, além de bibliográfica e documental, é um estudo de caso. Os instrumentos utilizados foram questionário aberto, construção de frases, redação e conversações. Participaram deste estudo onze mesários, que atuaram nas eleições de 2008, na 55ª Zona Eleitoral/ES. Os sentidos identificados relacionam-se a sentimentos de descrédito, desejo de mudança social, obrigação moral/social, satisfação pessoal e benefícios particulares. Conclui-se que os sentidos subjetivos interferem no comportamento durante a participação voluntária, sugerindo necessidade de adequações na gestão do processo.Despite advances in Brazilian electoral process and increase of poll workers, errors and inappropriate behaviors that hinder or impede the exercise of voting rights continue to occur. In order to establish a reflection that will help in better understanding the problem, we proposed to analyze the subjective meanings that emerge opposite the participation of these volunteers. We adopted as theoretical, epistemological and methodological background the Historic-Cultural Theory of Subjectivity, by González Rey. The methods used were open questionnaire, sentence construction, writing and conversations. This study included eleven poll workers, who participated in the 2008 elections, in the 55th Electoral Zone / ES. The meanings identified relate to feelings of distrust, desire for social change, moral / social obligation, personal

  15. Oxygen effect and influence of the anoxic radiosensitizing agent TAN on the induction of λ-prophage in polA and wild type E.coli strains after gamma irradiation

    International Nuclear Information System (INIS)

    The modification effect of both oxygen and radiosensitizing agent TAN on the λ-prophage induction in polA mutant and wild type E.coli cells after γ-irradiation was studied. The oxygen and TAN enhancement ratio concerning the cell sensitivity is more significant in polA mutant cells as compared to that in the wild type ones. The same behaviour has been observed for the oxygen and TAN enhancement ratio for the λ-prophage induction. The TAN effect on the survival and on the λ-induction was smaller than the oxygen effect. The bigger efficiency of oxygen and DNA-radicals are more difficult to repair than those created by an interaction of TAN and DNA-radicals

  16. Temporomandibular Eklem Rahatsızlıklarının Klinik Tanı Yöntemlerine Genel Bakış

    OpenAIRE

    Akkemik Kıpçak, Özlem

    2011-01-01

    Temporomandibular eklem rahatsızlığının (TMR) tanımlanmasında kullanılan terminoloji yıllar içerisinde değişiklik göstermiştir. Temporomandibuler eklem ağrı ve disfonksiyonu ve çiğneme sistemine ait yakınmalarla kliniğe başvuran hastaların tanısında sayısız terim kullanılmıştır. Ayırıcı tanıya yönelik net kriterlerin olmaması nedeniyle klinisyenler ve araştırmacılar Costen sendromu, kranyomandibuler düzensizlik, temporomandibular düzensizlik gibi farklı tanısal sınıflamalar kullanmışlardır. G...

  17. Comparation of Rabbit Skin Tanned by Different Organic Phosphate%有机磷盐鞣制兔皮性能比较

    Institute of Scientific and Technical Information of China (English)

    李瑶; 周裕婷; 刘强; 张宗才

    2011-01-01

    The organic phosphate is a kind of nontoxic phosphor compound without environmental pollution. It has been regarded as an ideal chrome-free tanning agent due to its good protein crosslinking characteristics. On the basis of studying on organic phosphate tanning of goatskin leather, application of organic phosphate tanning technology on rabbit skin and the tanning performance of different organic phosphate were studied in this paper.%有机磷盐是一种低毒、无污染的具有羟甲基结构的含磷化合物.由于其优良的蛋白质交联性能,被认为是一种较理想的无铬鞣剂,而成为当前皮革鞣制研究的重点.本文在原有有机磷盐鞣制山羊皮革研究的基础上,进一步研究有机磷盐鞣制兔皮的工艺技术,并比较了多种有机磷盐的鞣制性能.

  18. Production Technology Research on Cattle Upper Leather Chrome-free Tanning%黄牛鞋面革无铬鞣生产工艺研讨

    Institute of Scientific and Technical Information of China (English)

    徐达宇; 周赟; 雷明智

    2016-01-01

    选择有机膦盐鞣剂预鞣,然后采用铝鞣剂和锆鞣剂结合进行主鞣,使革身柔软,粒面平细,具有较好的复鞣、染色和加油性能。最后用收敛性强的植物鞣剂和合成鞣剂复鞣。生产过程清洁环保,成品革不含六价铬等有毒有害成分,革身柔软、丰满,粒面紧实细致,不松面,皮革感观和理化指标符合使用要求。%This paper aims at choosing organic phosphorus salt for pretanning which makes the finished leathers have good fullness and dyeing performance as well as oil-adding quality, then adopts aluminum tanning agent and zirconium tanning agent to carry out main tanning, and finally uses robust vegetable tannin and synthetic tanning agent for retanning. What's more, It is believed that it's a cleaner production process and the finished leather doesn't contain hazardous substances such as hexavalent chromium, thus makes the leather surface even and subtle, plumpy and soft, which meets the requirements of physical and chemical index.

  19. Maailma naftareservid / Lembo Tanning, Toivo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2008-01-01

    Ilmunud ka: Buhgalterskije Novosti nr. 4 lk. 37-41. Maailmaturul jätkub toornafta hindade kasv, maailma uuritud naftavarud ja reservid. Tulevikus hakkab nafta ja selle hind paljuski määrama ühe või teise riigi majandusarengut ning sellest omakorda nende sõjalist võimsust ja poliitilist mõjuvõimu. Tabelid: Tõestatud naftavarud, 2007; Olemasolevad tõestatud naftavarud, 1986-2006. Diagrammid: 10 suuremat nafta reservidega riiki, 2007; Maailma nafta reservid, 2006

  20. Euroopa Liidu eelarve / Lembo Tanning, Toivo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2007-01-01

    Ilmunud ka: Buhgalterskije Novosti, nr. 3, 2007, lk. 33-39. Ülevaade Euroopa Liidu eelarve moodustamise põhimõtetest ja prioriteetidest. Diagramm: Euroopa Liidu eelarve 2006-2013. Graafikud: ELi ühtekuuluvussummad 2007-2013; Eesti ühtlustustoetused 2007-2013. Tabel: Balti riikidele eraldatavad ühtlustamisfondi summad 2007-2013

  1. 植物鞣剂与非铬金属鞣剂结合鞣制的研究%Vegetable and Non-chromium Metal Tanning Agent Combination Tannage

    Institute of Scientific and Technical Information of China (English)

    李闻欣; 王勇

    2013-01-01

    用栲胶、铝鞣剂、钛鞣剂对浸酸猪皮进行结合鞣制,在最佳工艺的基础上,选取与铝鞣剂和钛鞣剂搭配最佳的栲胶,考察栲胶用量和改变结合鞣不同鞣制阶段pH值对Ts的影响.结果表明:使用水解类栲胶的效果一般情况下比用缩合类栲胶好,且用栗木栲胶的效果更好.在植铝钛结合鞣中,栗木栲胶用量15%,当植鞣pH值为4.8、铝鞣pH值为3.0、钛鞣pH值为1.5时,结合鞣制革的Ts达到93℃.%The pickling pigskins were tanned with vegetable tannin, aluminium tanning agent and titanium tanning agent ( self - made). On the basis of the optimum, the best collocation of tannin extracts was selected with aluminium tanning agent and titanium tanning agent. The effect of tannin extract dosage and different pH value in combination tanning process on Ts were investigated. The results show the tanning properties of the pelts by hydrolysable tannin are better than that by the condensed tannin on general circumstances, and chestnut extract tannin has a better tanning effect than other tannins. In the vegetable - alumium - titanium combination tanning process, the amount of chestnut extract is 15% , when the pH value of vegetable tannage is 4. 8, the pH value of the aluminum tannage is 3. 0, the pH value of the titanium tannage is 1. 5, the maximum Ts value of the combination tanned leather can be up to 931.

  2. Unipolar resistive switching behaviors and mechanisms in an annealed Ni/ZrO2/TaN memory device

    Science.gov (United States)

    Tsai, Tsung-Ling; Ho, Tsung-Han; Tseng, Tseung-Yuen

    2015-01-01

    The effects of Ni/ZrO2/TaN resistive switching memory devices without and with a 400 °C annealing process on switching properties are investigated. The devices exhibit unipolar resistive switching behaviors with low set and reset voltages because of a large amount of Ni diffusion with no reaction with ZrO2 after the annealing process, which is confirmed by ToF-SIMS and XPS analyses. A physical model based on a Ni filament is constructed to explain such phenomena. The device that undergoes the 400 °C annealing process exhibits an excellent endurance of more than 1.5  ×  104 cycles. The improvement can be attributed to the enhancement of oxygen ion migration along grain boundaries, which result in less oxygen ion consumption during the reset process. The device also performs good retention up to 105 s at 150 °C. Therefore, it has great potential for high-density nonvolatile memory applications.

  3. Unipolar resistive switching behaviors and mechanisms in an annealed Ni/ZrO2/TaN memory device

    International Nuclear Information System (INIS)

    The effects of Ni/ZrO2/TaN resistive switching memory devices without and with a 400 °C annealing process on switching properties are investigated. The devices exhibit unipolar resistive switching behaviors with low set and reset voltages because of a large amount of Ni diffusion with no reaction with ZrO2 after the annealing process, which is confirmed by ToF-SIMS and XPS analyses. A physical model based on a Ni filament is constructed to explain such phenomena. The device that undergoes the 400 °C annealing process exhibits an excellent endurance of more than 1.5  ×  104 cycles. The improvement can be attributed to the enhancement of oxygen ion migration along grain boundaries, which result in less oxygen ion consumption during the reset process. The device also performs good retention up to 105 s at 150 °C. Therefore, it has great potential for high-density nonvolatile memory applications. (paper)

  4. Por qué los mercados financieros son tan ineficientes y explotadores, y una propuesta de solución

    Directory of Open Access Journals (Sweden)

    Paul Woolley

    2010-12-01

    Full Text Available Este ensayo presenta una nueva manera de entender el funcionamiento de los mercados financieros. Su diferencia clave con la teoría convencional es que reconoce que los inversionistas no invierten directamente en valores sino a través de agentes tales como los administradores de fondos. Los agentes tienen objetivos diferentes y mejor información que sus clientes, y esta asimetría es fuente de ineficiencia: mala fijación de precios, burbujas y colapsos de Bolsa. Un resultado independiente es que los agentes pueden capturar la masa de ganancias de las innovaciones financieras. Los problemas de principal-agente ayudan a explicar por qué el sector financiero global se ha vuelto tan hipertrofiado, rentable y propenso a crisis. La acción remedial consiste en que los principales modifiquen la manera de contratar o instruir a los agentes. El ensayo termina con un manifiesto de políticas que los fondos de pensiones y otros grandes inversionistas pueden adoptar para atenuar los efectos destructivos de la delegación sobre sus beneficios individuales, y promover el bienestar social en forma de un sector financiero más esbelto, eficiente y estable.

  5. Water bath hyperthermia is a simple therapy for psoriasis and also stimulates skin tanning in response to sunlight

    International Nuclear Information System (INIS)

    An eight week trial, involving superficial hyperthermia delivered biweekly via simple water bath immersion, was tested for its ability to clear mild to moderate psoriatic lesions. Seven patients were treated and three cases rapidly improved. In the remaining patients, the treatment frequency was increased to alternate days; two cases improved significantly, one patient showed a partial response, and the fourth had no visible change (this was the only patient taking concurrent drug therapy - etretinate). In addition to resolving psoriatic lesions, water bath hyperthermia also reduced edema (swelling) and relieved pruritus (itching) in all patients, both during the treatment period and for up to several months after lesions had returned. Lesion reappearance occurred within one to three months after the last heat treatment. We retreated one patient and produced a second complete remission. These results indicate that simple repetitive water bath hyperthermia alone is effective in the treatment of psoriatic lesions in heatable locations. An unexpected side effect was enhanced melanin content (tanning) in all areas where hyperthermia treated skin was exposed to sunlight. (author)

  6. Indirect extraction-spectrophotometric determination of 2-(thiocyanomethylthiol)benzothiazole in chrome tanning liquors after its breakdown to 2-mercaptobenzothiazole.

    Science.gov (United States)

    Hinojosa Reyes, Laura; Wróbel, Katarzyna; Wróbel, Kazimierz

    2002-03-01

    The simple extraction-spectrophotometric procedure is proposed in this work for the determination of 2-(thiocyanomethylthiol)benzothiazole (TCMTB) in chrome tanning liquors after its breakdown to 2-mercaptobenzothiazole (MBT). The sample (50mul) was 4-fold diluted with deionized water and the conversion of TCMTB to MBT was obtained with cysteine (400 mul, 0.1 moll(-1)) in alkaline conditions (pH 10). After acidification to pH 2.5 (100 mul phosphoric acid, 2 moll(-1)), the extraction was carried out with 800 mul of ethyl acetate, containing 0.2% of beta-mercaptoethanol and absorbance was measured at 324 nm with the cut-off filter 295 nm. To avoid possible errors due to MBT presence in the sample, this same sample was taken for blank, but the reagents were added in form of one acid solution (omitting the conversion step). The calibration range was 10-120 mugml(-1) of TCMTB with the regression coefficient 0.9999, the quantitation limit was 2.80 mugml(-1) and the within day precision was 3.34 and 0.20%, respectively, for 10 and for 100 mugml(-1) of TCMTB. The results obtained in the analysis of the three industrial liquor samples by the proposed procedure were in a good agreement with the results obtained using liquid chromatography method. PMID:18968524

  7. 栲胶对丝绸染色的工艺研究%Study on Silk Dyeing Using Tanning Extracts

    Institute of Scientific and Technical Information of China (English)

    韩香莲

    2013-01-01

      论文以栗木和余柑作为染料对丝绸染色进行研究。用这两种栲胶(水解类)对丝绸进行直接染色,并配合不同媒染剂进行后媒染和预媒染染色。通过对比试验,性能测试,确定栲胶最佳染色工艺条件:栗木采用配合媒染剂 SnCI2后媒染法,酸固色 pH 3.5,染色时间30 min;余柑为直接染色,酸固色 pH 6.5,染色时间30 min。%In this paper silk dyeing was studied using chestnut and orange as vegetable dye. It was dyed with direct dyeing methods (hydrolysable tanning), and with post-mordant and pre-mordant dyeing using different dye mordant. By contrast experiments and properties tests, the optimum dyeing conditions were determined as follows: post-mordant dyeing method matching with SnCL2 under the pH value 3.5 and dyeing time 30 min for chestnut extract; direct dyeing method under the pH value 6.5 and dyeing time 30 min for orange extract.

  8. The Influence of Ozonization For DO, BOD and Bacterial Growth in The Liquid Waste From Tanning Leather Industry

    International Nuclear Information System (INIS)

    The research of ozonization influence of dissolved oxygen (DO), biological oxygen demand (BOD) and the bacterial growth in the liquid waste from tanning leather industry has been done. The objectives of this research was to studied the influence of ozonization for decomposition process of the organic compound in these waste by indicator of BOD decreased, increased of DO and decomposer bacterial growth. The ozonization was carried out by time variation 0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195 and 210 minutes. Each samples of the waste has been ozonized keep in the sterile reaction tube for isolated of bacterial and the other keep in the bottle for BOD and DO measurement. These research results show that ozonization with 16.243 x 10-4 mg/second debit for 3 hours can decreased of BOD were 19.61 %, and ozonization for 3.5 hours can increased of DO were 82.5%. The other hand, 3 hours ozonization can decreased of kind of bacterial growth were 80 %. (author)

  9. Interaction of collagen with chlorosulphonated paraffin tanning agents: Fourier transform infrared spectroscopic analysis and molecular dynamics simulations.

    Science.gov (United States)

    Monti, Susanna; Bramanti, Emilia; Della Porta, Valentina; Onor, Massimo; D'Ulivo, Alessandro; Barone, Vincenzo

    2013-09-21

    The binding of chlorosulphonated paraffins to collagen triple helices is studied by means of classical molecular dynamics simulations and experimental spectroscopic techniques in order to disclose the principal characteristics of their interaction during the leather fattening process. Indeed, collagen is the main target to develop new leather modifying agents with specific characteristics, and an accurate design of the collagen binders, supported by predictive computational strategies, could be a successful tool to obtain new effective eco-compatible compounds able to impart to the leather the required functionalities and distinctive mechanical properties. Possible effects caused by the tanning agents on the collagen matrix have been identified from both experimental and theoretical points of view. Computational data in agreement with experiment have revealed that chlorosulphonated paraffins can interact favorably with the collagen residues having amine groups in their side chains (Arg, Lys, Asn and Gln) and reduce the tendency of the solvated collagen matrix to swell. However, the interference of chlorosulphonated paraffins with the unfolding process, which is operated mainly by the action of water, can be due both to covalent cross-linking of the collagen chains and intermolecular hydrogen bonding interactions involving also the hydroxyl groups of Hyp, Ser and Thr residues. PMID:23904010

  10. A review on management of chrome-tanned leather shavings: a holistic paradigm to combat the environmental issues.

    Science.gov (United States)

    Pati, Anupama; Chaudhary, Rubina; Subramani, Saravanabhavan

    2014-10-01

    Raw hide/skins come to the tanners as a by-product of meat industry which is converted into value-added leather as product for fashion market. Leather manufacturing is a chemical process of natural biological matrix. It employs a huge quantity of water and inorganic and organic chemicals for processing and thereby discharges solid and liquid wastes into the environment. One of the potential solid wastes generated from leather industry is chrome-tanned leather shavings (CTLSs), and its disposal is increasingly becoming a huge challenge on disposal to tanners due to presence of heavy metal chromium. Hence, finding a sustainable solution to the CTLS disposal problem is a prime challenge for global tanners and researchers. This paper aims to the deeper review of various disposal methods on CTLS such as protein, chromium, and energy recovery processes and its utilization methodologies. Sustainable technologies have been developed to overcome CTLS solid wastes emanating from leather processing operations. Further, this review paper brings a broader classification of developed methodologies for treatment of CTLSs. PMID:24906828

  11. Thermal behaviour of chrome shavings and of sludges recovered after digestion of tanned solid wastes with calcium hydroxide

    International Nuclear Information System (INIS)

    The thermal behaviour of chrome shavings and of sludges recovered after digestion of tanned wastes with Ca(OH)2 was studied. Ashes obtained after incineration of wastes at various temperatures were analysed by X-ray diffraction and EDX method. The main crystallized phases present in the ash obtained at 600 deg. C are Cr2O3 and NaCl. The diffractograms revealed an increase in the intensities of the chromium oxide peaks and a very notable decrease of the amount of sodium chloride at 1100 deg. C. EDX analysis revealed a total disappearance of the chlorine peak at this temperature. Scanning electron micrographs show that the waste lost its fibrous aspect when the temperature increases. Formation of aggregates was noted after 550 deg. C. Combustion of organic matters and decarbonation phenomenon are the main stages observed on GTA and DTA curves of sludges. These phenomena are, respectively, exothermic and endothermic. The diffractogram of sludges recorded at 550 deg. C, in the presence of a constant oxygen surplus, revealed the presence of CaCrO4 and CaCO3

  12. 三聚氰胺羟甲基醇胺树脂鞣革研究%The Research of Melamine - methylol-hydramine Resin Tanning Leather

    Institute of Scientific and Technical Information of China (English)

    李建波; 单志华

    2012-01-01

    通过自制三聚氰胺羟甲基醇胺树脂(melamine-methylol-hydramine resin,MMH树脂)对多种物质的溶液的稳定性能测试,发现了MMH树脂对硫酸钠、植物鞣剂、明胶及合成单宁溶液敏感,在氯化钠、戊二醛溶液中稳定.研究了MMH树脂主鞣、多种复鞣及加脂的对比实验,获得了一些有意义的结果.单独MMH树脂鞣制绵羊酸皮可以获得收缩温度(Ts)为77℃.MMH树脂鞣制后进行醛、铬盐、栲胶(塔拉与荆树皮栲胶)复鞣,革的Ts都有增加.醛和铬复鞣革的撕裂强度都所增加,而植复鞣革的撕裂强度有所降低.主鞣和复鞣革加脂后的Ts都有下降.其中,未复鞣的革下降最大为6.45℃.经过加脂革的撕裂强度都有了一定程度的增加.扫描电镜表征了胶原纤维的组织构造.MMH树脂鞣制后有很好的纤维分散能力.经过复鞣纤维间距减小.减小的顺序是铬鞣、醛鞣和植鞣.%The solution stability of prepared melamine -methylol - hydramine resin (MNH) mixing with some substances was tested The MMH is sensitive to the sodium sulfate, vegetable tanning agents, gelatin and syntannin in solution and stable to sodium chloride, glutaraldehyde in solution. The leather tanned by MMH and retanned by some other agents after fatliquoring and some interesting results can be obtained. The sheepskin leather tanned alone with MMH can obtain shrinkage temperature (Ts) 77℃ , and after retanning by glutaraldehyde, chromium, vegetable tannins(tara and wattle) all have a Ts increasing. Meanwhile, the leather 's tear strength increased retanned with glutaraldehyde and chromium but decreased by the vegetable tannins. After falliquoring all leather samples Ts are decreased. The biggest drop of Ts is 6.45℃ ,for the leather sample tanned alone with MMH. There is a increased tear strength to all leather samples fatliquored. The histological structure of leather samples was characterized by SEM, in which the collagen fibers has a good

  13. GAA Triplet Tekrar Artışı İle Tanısı Doğrulanan Bir Friedreich Ataksisi Olgusu

    OpenAIRE

    Alper, Gülay

    1999-01-01

    Friedreich ataksisi otozomal resesif geçişli nörodejeneratif bir hastalıktır ve herediter ataksiler arasında en sık görülenidir Hastalığın başlangıç yaşı ve klinik bulgular değişkenlik gösterebilir Anormal genin kromozom 9 a lokalize edilmesinden sonra atipik olguların tanısının olanaklı hale gelmesiyle Friedreich ataksisinin klinik spektrumu genişlemiştir Bu yazıda 7 yaşından itibaren ilerleyici yürüme güçlüğü olan klinik bulguları ile Friedreich ataksisi tanısı konan ve GAA tekrar sayısı 10...

  14. A simple evaluation procedure of the TAN calibration and the influence of non-ideal calibration elements on VNA S-parameter measurements

    Directory of Open Access Journals (Sweden)

    U. Stumper

    2007-06-01

    Full Text Available For the 7-term general TAN (Through-Attenuator-Network self-calibration method of a four-sampler vector network analyser (VNA, and for all derived calibration methods like TLN, TRL, TRM, TAR, or TMN, it is shown that a very simple evaluation procedure of the seven error terms is possible, even if the Through connection is replaced by a reflectionless network with known transmission. Expressions for the deviations of the measured S-parameters of two-port test objects (d.u.t.s from the true values, which are caused by deviations of the modeled S-parameters of non-ideal calibration elements ("standards" from their true values, are also presented. Additionally, it is shown that a TAN calibration is also possible in case of unequal reflections of the Network.

  15. A WRIST-WALKER EXHIBITING NO "UNER TAN SYDNROME": A THEORY FOR POSSIBLE MECHANISMS OF HUMAN DEVOLUTION TOWARD THE ATAVISTIC WALKING PATTERNS

    OpenAIRE

    TAN, Prof. Dr. Üner

    2007-01-01

    After discovering two families with handicapped children exhibiting the “Uner Tan syndrome,” the author discovered a man exhibiting only wrist-walking with no primitive mental abilities including language. According to his mother, he had an infectious disease with high fever as a three months old baby; as a result, the left leg had been paralyzed after a penicilline injection. This paralysis most probably resulted from a viral disease, possibly poliomyelitis. He...

  16. High-resolution TanDEM-X DEM: An accurate method to estimate lava flow volumes at Nyamulagira Volcano (D. R. Congo)

    Science.gov (United States)

    Albino, F.; Smets, B.; d'Oreye, N.; Kervyn, F.

    2015-06-01

    Nyamulagira and Nyiragongo are two of the most active volcanoes in Africa, but their eruptive histories are poorly known. Assessing lava flow volumes in the region remains difficult, as field surveys are often impossible and available Digital Elevation Models (DEMs) do not have adequate spatial or temporal resolutions. We therefore use TerraSAR-X add-on for Digital Elevation Measurement (TanDEM-X) interferometry to produce a series of 0.15 arc sec (˜5 m) DEMs from between 2011 and 2012 over these volcanoes. TanDEM-X DEMs have an absolute vertical accuracy of 1.6 m, resulting from the comparison of elevation with GPS measurements acquired around Nyiragongo. The difference between TanDEM-X-derived DEMs from before and after the 2011-2012 eruption of Nyamulagira provides an accurate thickness map of the lava flow emplaced during that activity. Values range from 3 m along the margins to 35 m in the middle, with a mean of 12.7 m. The erupted volume is 305.2 ± 36.0 × 106 m3. Height errors on thickness depend on the land covered by the flow and range from 0.4 m in old lavas to 5.5 m in dense vegetation. We also reevaluate the volume of historical eruptions at Nyamulagira since 2001 from the difference between TanDEM-X and SRTM 1 arc sec DEMs and compare them to previous work. Planimetric methods used in literature are consistent with our results for short-duration eruptions but largely underestimate the volume of the long-lived 2011-2012 eruption. Our new estimates of erupted volumes suggest that the mean eruption rate and the magma supply rate were relatively constant at Nyamulagira during 2001-2012, respectively, 23.1 m3 s-1 and 0.9 m3 s-1.

  17. TANNING OF SLUDGE AND ITS INFLUENCE ON THE PRODUCTION OF SEEDLINGS PARICÁ (Schizolobium amazonicum) AND THE CHEMICAL PROPERTIES OF SOIL

    OpenAIRE

    Lorena de Souza Tavares; Walcylene Lacerda M. P. Scaramuzza; Oscarlina Lúcia dos Santos Weber; Franciele Caroline de Assis Valadão; Kelly Dayana Benedet Maas

    2013-01-01

    http://dx.doi.org/10.5902/1980509810547The objective of this study was to assess the influence of the tanning sludge in soil chemical properties and the morphological and nutritional ‘paricá’ seedlings. The experiment was conducted in a greenhouse in a completely randomized design with five replicates, having as a substrate Humic Cambisol, which was characterized chemically and granulometrically, in possession of these results, the soil was previously corrected with lime and NPK. After 100 da...

  18. Pollution minimizing at traditional craft village by micro-credit program - case study from Tan Phu Dong rice flour production village

    OpenAIRE

    Nguyen, Vo Chau Ngan; Huynh, Thi Ngoc Luu; Le, Hoang Viet; Do, Ngoc Quynh; Nguyen, Ngoc Em

    2012-01-01

    This paper introduces the results of a project initiated by Cantho University (CTU) on the introduction of micro-credits for addressing the environmental pollution in Vietnam’s craft villages. At Tan Phu Dong, a traditional rice powder production village in Sa Dec, Dong Thap, all wastes from domestic and production activities and animal husbandry were freely disposed into open water sources. This practice led to a negative impact on the local environment. With the financial support provided b...

  19. "Reposo en cama": algo mas que una sencilla terapia

    Directory of Open Access Journals (Sweden)

    Porras Janeth

    1991-12-01

    Full Text Available

    Se ha coincidido en afirmar que es muy agradable y reconfortante caminar tranquilamente en una mañana soleada o hacer ejercicio al aire libre y que esto trae positivos efectos sobre la salud física y mental; como también que es muy agradable tener un período de descanso después de una agotadora jornada de trabajo. Es precisamente esta alternancia entre períodos de actividad y períodos de descanso, lo que permite un óptimo equilibrio fisiológico de cada uno y del conjunto de los sistemas de la economía. Sin embargo, esta no es precisamente la situación de las personas que por diversas situaciones o alteraciones; tales como enfermedades cardiovasculares,  neurológicas, respiratorias, traumas y limitaciones propias de la edad avanzada; voluntaria o involuntariamente disminuyen su actividad física y permanecen medianos o prolongados períodos de reposo en cama; no solamente como ayuda terapéutica para lograr su recuperación, sino como forma de prevenir nuevas crisis o complicaciones.

  20. "reposo en cama": algo mas que una sencilla terapia

    OpenAIRE

    Porras Janeth

    2010-01-01

    Se ha coincidido en afirmar que es muy agradable y reconfortante caminar tranquilamente en una mañana soleada o hacer ejercicio al aire libre y que esto trae positivos efectos sobre la salud física y mental; como también que es muy agradable tener un período de descanso después de una agotadora jornada de trabajo. Es precisamente esta alternancia entre períodos de actividad y períodos de descanso, lo que permite un óptimo equilibrio fisiológico de cada uno y del conjunto de los siste...

  1. Pilas de arena sobre grafos dirigidos y algo de complejidad

    Directory of Open Access Journals (Sweden)

    Carolina Mejía Moreno

    2006-01-01

    Full Text Available En este artículo estudiamos el Modelo de Pilas de Arena sobre grafos dirigidos. El comportamiento del modelo sobre grafos dirigidos es más complejo (en término estrictos que sobre grafos no dirigidos; es por ello que, para muchas de las preguntas centrales de la teoría, no se conoce la respuesta en el caso dirigido. En este artículo se ha sintetizado la teoría para digrafos, se han simplificado algunas pruebas y se concretan algunos resultados relacionados con la complejidad de predicción del autómata.

  2. Algo sobre arte y literatura Something about Art and Literature

    Directory of Open Access Journals (Sweden)

    Alba Teresita Estrada Molné

    2005-12-01

    Full Text Available Este trabajo (i tiene como propósito divulgar el producto terminado del primero de los tomos o secciones derivados del Proyecto “Cultura para la Enseñanza del Inglés como Lengua Extranjera”. Dicha Sección consta de dos capítulos; el primero, un Panorama General del Arte y la Literatura Universal, Latinoamericano y Cubano. El segundo, orientaciones metodológicas, ejercicios y tipos de proyectos de utilización de factores y personalidades artísticos y literarios en el proceso formativo idiomático de los estudiantes. Para llevar a cabo este trabajo se han utilizado el análisis de texto, estudio de bibliografía clásica y actual, búsqueda de datos en Internet y Enciclopedias. En el trabajo metodológico se ha tenido en cuenta el enfoque Comunicativo para orientaciones, ejercicios y proyectos. Se concluye que este material está listo para su publicación y que es herramienta importante en manos del profesor de Lengua Extranjera. Se impartió curso de postgrado sobre los contenidos de esta secciónThis work has a purpose to spread the finished product of the first of the volume or sections derived of the Project “Culture for Teaching of English as Foreign Language”. This Section consist of two chapters; the first one is a General Panorama of the Art and the Universal, Latin American and Cuban literature; and the second one are methodological orientations, exercises and types of projects of use of factors and artistic and literary personalities in the process of the language formation. To carry out this work the text analysis they have been used, study of classic and current bibliography, search of data in Internet and Encyclopaedias. In the methodological work it has been kept in mind the Talkative focus for orientations, exercises and projects. The authors conclude that this material is clever for its publication and that it is important tool in the professor's of Foreign Language hands. Post grade course was imparted about the contents of this section

  3. Health assessment for Mid-America Tanning Company, Sergeant Bluff, Woodbury County, Iowa, Region 7. CERCLIS No. IAD085824688. Preliminary report

    Energy Technology Data Exchange (ETDEWEB)

    1990-06-08

    The Mid-America Tanning Company (MAT) Site is proposed to be listed by the U.S. Environmental Protection Agency (EPA) on the National Priorities List (NPL). Mid-America Tanning, now U.S. Tanning, is an animal hide processing plant located on 98.7 acres approximately five miles south of Sergeant Bluff, Woodbury County, Iowa. From June 1978 to the present, use of chromium has been extended to the entire process, which involves the treatment of approximately 1000 hides per day. The process utilizes trivalent chromium and produces waste sludge and liquids that are treated on-site at the company wastewater treatment facility. Based on the available information, this site is considered to be of potential public health concern because of the risk to human health caused by the likelihood of exposure to hazardous substances via groundwater, surface water and soil. Further environmental characterization and sampling of the site and impacted off-site areas during the Remedial Investigation and Feasibility Study (RI/FS) should be conducted to address the environmental and human exposure pathways discussed above and to further define the extent of contamination at the site.

  4. Al-‘Alāqah bayn al-Dīn wa al-Dawlah bi Indūnīsiyā: Tan Malaka wa Ārā’uhu al-Siyāsīyah

    OpenAIRE

    Khairil Azhar

    2014-01-01

    The present article is about the relation between religion and state as it is discussed by a prominent figure whose contributions to Indonesian politic are out of question. He is Tan Malaka, who has been considered as a radical Marxist activist. Through his works, including Madilog: Materialisme, Dialektika, Logika; Islam dalam Tinjauan Madilog Dari Penjara ke Penjara; Naar De Republiek Indonesie; Tan Malaka shows his deep appreciation to Marxism. That is why, in these works, be pays a ...

  5. Measurement of the irradiation of generating lamps of radiation ultraviolet type A used in tan equipment Sportarredo model Ringo 1200

    International Nuclear Information System (INIS)

    In the last years has been developed in the cosmetology market the application of ultraviolet radiation (UV) in known equipment s as cameras or tan beds to obtain a change in the pigmentation of the skin. In Mexico, this fashion has entered without the appropriate recommendations of prevention against the risks of the adverse effects from the disproportionate exhibition to such non ionizing energy form; which is electromagnetic radiation in the interval of 400 nm to 100 nm of wave longitude, classified in near UV-A of 400 nm to 315 nm, and distant: UV-B of 315 nm to 280 nm and UV-C of 280 nm to 100 nm. Therefore, they have not been included in the national normative the necessary regulations regarding the operation parameters of the tan cameras for the E irradiation levels. The level E is defined as the incident radiation power in a receiver surface to a specific localization and relative orientation to the radiant surface expressed in units of the International System, W/m2 or MW/cm2. The objective of this work is to show the measurement results for the E of a camera that contains two emitters arrangements, a first to whole body that consist of 8 lamp pairs model B17L of 160 Watts, which will have a nominal E of 358 W/m2 (35.8 MW/cm2) for UV type A and 3.3 W/m2 (0.33 MW/cm2) for UV type B; one second to face of 8 lamps model KALFASUN 630, with an E of 568 W/m2 (56.8 MW/cm2) for UV type A and 2.97 W/m2 (0.297 MW/cm2) for UV type B. The E measurements are carried out for UV-A with the body and face lamp, respectively; with two instruments: photometer mark Sportarredo, model BF01, series E009, and radiometer mark Ets without specified model. Additional the treatment time is verified with the chronometer of the digital screen of the equipment comparing it with a digital meter with resolution of 0.001 s. Conclusion: the lamps do not fulfill the E nominal values reported by the manufacturer, being minors 3.2 to 1.75 times their nominal value for the body lamps and 1

  6. Challenge of urban sewage disposal in a karst region: Mérida, Yucátan, Mexico

    Science.gov (United States)

    Perry, E. C.; Villasuso, M.

    2013-05-01

    Four hydrogeologic factors influence urban sewage management on the northern Yucátan (Mexico) Peninsula: 1) lack of rivers capable of transporting and/or oxidizing sewage, 2) near-surface flat-lying, porous, permeable limestone and dolomite with shallow layers of variable permeability but without major subsurface aquitards, 3) rapid groundwater transmission, penetration of seawater inland beneath a fresh water lens, and a flat water table only a few meters below land surface and controlled by sea level, 4) near absence of soil cover. Mérida, Yucátan (population approaching one million, approximately the world's 450th most populous city) has no central sewage system. The water table beneath the city is consistently only 7-9 m below land surface, and the 40 m-thick fresh water lens, which is the sole source of municipal, industrial, and agricultural water, directly overlies a marine intrusion of modified seawater composition. The old city has an estimated 130,000 drains feeding untreated household waste directly into the permeable karst aquifer. Numerous storm drains send street runoff directly to the aquifer. In addition, industries, hotels, and some subdivisions have unmonitored injection wells that pump untreated wastewater into the underlying saline intrusion. Some injection wells have flow problems possibly because of low aquifer permeability within the saline intrusion. Deep injection is also problematic because density contrast with saline intrusion water can produce a gravity imbalance, and high sulfate water can react with organic waste to produce H2S. Some city water supply wells are reportedly affected by inflation of the water table beneath the city, by local upconing of saline water, and by nitrate contamination. Paradoxically, Mérida with an abundant, easily contaminated source of fresh water, lacks streams to transport sewage off-site, and thus shares some water supply/sewage treatment problems with cities in arid regions. Recently, compact

  7. Dispersiones acuosas de poliuretano bloqueado: una alternativa como agente curtiente Aqueous dispersions of blocked polyurethane: an alternative as tanning agents

    Directory of Open Access Journals (Sweden)

    José Luis Mata-Mata

    2008-06-01

    Full Text Available Se sintetizaron y se evaluaron como agentes curtientes de pieles vacunas dos tipos de agentes de reticulación base poliuretano bloqueado. Se presentan los resultados de la síntesis de dispersiones acuosas de poliuretano bloqueado (DPU’s, basadas en prepolímeros a partir de la reacción de los diisocianatos alifáticos H12MDI (4,4’ metilenbis-ciclohexilisocianato y HDI (hexametilendiisocianato con polioles base poliéter óxido de etileno de peso molecular 1 y 2 KDa, en una relación molar isocianato/oxhidrilo (NCO/OH de 4:1 y 6:1 a 100 °C por 2 y 4 horas. En una segunda reacción, los grupos isocianato (NCO libres del prepolímero se bloquearon con una solución acuosa de NaHSO3 ó Na2S2O5 al 40%p/p. Los prepolímeros se caracterizaron mediante espectroscopia IR y RMN de ¹H. El tanto por ciento de isocianato libre en el prepolímero, así como el bloqueo de dichos grupos, se determinaron por espectroscopía IR. La evaluación de la capacidad curtiente de las DPU’s se determinó de acuerdo a la estabilidad térmica de la piel (temperatura de desnaturalización, mediante Calorimetría Diferencial de Barrido (DSC y a la determinación del índice de reticulación de las DPU’s con la colágena de la piel mediante un ensayo con ninhidrina.Two types of crosslinking agents blocked polyurethanes were synthesized and evaluated as tanning agents of bovine skins. The results of the synthesis of aqueous dispersions of blocked polyurethane (DPU’s are presented. They were based on prepolymers from the reaction of the aliphatic diisocyanates H12MDI 4,4’-methylenebis(cyclohexyl isocyanate and HDI (hexamethylene diisocyanate with HO-polyols such as polyethylene oxide of molecular weight 1 and 2 kDa. The molar NCO/OH ratio was fixed in 4:1 or 6:1, at 100 °C and 2 or 4 hours for the reaction time. In a second reaction, the prepolymer containing terminal NCO groups were blocked by reaction with an aqueous NaHSO3 or Na2S2O5 solution to 40% w/w. The

  8. The HIA instrument on board the Tan Ce 1 Doubler Star near-equatorial spacecraft and its first results

    International Nuclear Information System (INIS)

    On 29 December 2003, the Chinese spacecraft Tan Ce 1 (TC-1), the first component of the Double Star mission, was successfully launched within a low-latitude eccentric orbit. In the framework of the scientific cooperation between the Academy of Sciences of China and ESA, several European instruments, identical to those developed for the Cluster spacecraft, were installed on board this spacecraft. The HIA (Hot Ion Analyzer) instrument on board the TC-1 spacecraft is an ion spectrometer nearly identical to the HIA sensor of the CIS instrument on board the 4 Cluster spacecraft. This instrument has been specially adapted for TC-1. It measures the 3-D distribution functions of the ion between 5 eV/q and 32 keV/q without mass discrimination. TC-1 is like a fifth Cluster spacecraft to study the interaction of the solar wind with the magnetosphere and to study geomagnetic storms and magnetospheric substorms in the near equatorial plane. HIA was commissioned in February 2004. Due to the 2 RE higher apogee than expected, some in-flight improvements were needed in order to use HIA in the solar wind in the initial phase of the mission. Since this period HIA has obtained very good measurements in the solar wind, the magnetosheath, the dayside and nightside plasma sheet, the ring current and the radiation belts. We present here the first results in the different regions of the magnetosphere and in the solar wind. Some of them are very new and include, for example, ion dispersion structures in the bow shock and ion beams close to the magnetopause. The huge interest in the orbit of TC-1 is strongly demonstrated. (orig.)

  9. Rock Deformation, Component Migration and 18O/16O Variations during Mylonitization in the Southern Tan-Lu Fault Belt

    Institute of Scientific and Technical Information of China (English)

    YANG Xiaoyong; LIU Deliang; FENG Min; YU Qingni; WANG Kuiren

    2007-01-01

    This paper discusses the relationship between the volume loss, fluid flow and component variations in the ductile shear zone of the southern Tan-Lu fault belt. The results show that there is a large amount of fluids flowing through the shear zone during mylonitization, accompanied with the loss of volume of rocks and variations of elements and oxygen isotopes. The calculated temperature for mylonitization in different mylonites ranges from 446 to 484℃, corresponding to that of 475 to 500℃for the wall rocks. The condition of differential stress during mylonization has been obtained between 99 and 210 MPa, whereas the differential stress in the wall rock gneiss is 70-78 MPa. The mylonites are enriched by factors of 1.32-1.87 in elements such as TiO2, P2O5, MnO, Y, Zr and V and depleted in SiO2, Na2O, K2O, Al2O3, Sr, Rb and light REEs compared to their protolith gneiss. The immobile element enrichments are attributed to enrichments in residual phases such as ilmentite, zircon, apatite and epidote in mylonites and are interpreted as due to volume losses from 15% to 60% in the ductile shear zone. The largest amount of SiO2 loss is 35.76 g/100 g in the ductile shear zone, which shows the fluid infiltration. Modeling calculated results of the fluid/rock ratio for the ductile shear zone range from 196 to 1192 by assuming different degrees of fluid saturation. Oxygen isotope changes of quartz and feldspar and the calculated fluid are corresponding to the variations of differential flow stress in the ductile shear zone. With increasing differential flow stress, the mylonites show a slight decrease of δ18O in quartz, K-feldspar and fluid.

  10. The Research Progress on Vegetable Tanning Agent and Its Application in Leather Industry%植物鞣剂及其在皮革工业中的应用研究进展

    Institute of Scientific and Technical Information of China (English)

    刘凤; 吕政

    2016-01-01

    With the continuous enhancement of people's health awareness of green environmental protection, vegetable tanning agents will replace the traditional chrome tanning agent as the main agent in leather processing. And vegetable tanning agents will have a better development potential and a broader application prospect. Several new kinds of vegetable tanning agents were introduced and the application and research progress of vegetable tanning agents in leather industry were reviewed in this paper. Finally, the main development direction of vegetable tanning agent was discussed.%随着人们绿色健康环保意识的不断增强,植物鞣剂将替代传统的铬鞣剂成为皮革加工中必不可少的用剂,而且有着更好的发展潜力和更广阔的应用前景。文章介绍了几种新型皮革植物鞣剂,并对近几年植物鞣剂在皮革工业的应用研究进展进行了综述,最后探讨了今后植物鞣剂的主要发展方向。

  11. Curtimento de peles de peixe com taninos vegetal e sintético = Tanning fish skins using vegetable and synthetic tannins

    Directory of Open Access Journals (Sweden)

    Ariana Martins Vieira

    2008-07-01

    Full Text Available No presente experimento objetivou-se avaliar a resistência das peles de peixes submetidas ao curtimento com taninos vegetal e sintético. As peles foram distribuídas em um delineamento inteiramente casualizado, com seis tratamentos aplicados na etapa decurtimento (T1 = 10% tanino vegetal; T2=10% tanino sintético; T3 = 5% tanino vegetal + 5% sintético; T4 = 12% tanino vegetal; T5 = 12% tanino sintético; T6 = 6% tanino vegetal + 6% sintético e dez repetições por tratamento, sendo o couro a unidade experimental.Para os testes de resistência à tração, alongamento e rasgamento, foi utilizado o dinamômetro EMIC. O curtimento com tanino vegetal, sintético e/ou sua combinação, assim como os níveis utilizados dentro de cada técnica de curtimento, interferiu no teste de tração, no entanto não influenciou No teste de alongamento e rasgamento progressivo. Portanto, a técnica de curtimento interfere na resistência dos couros de peixes. As peles de tilápia, quando curtidas e recurtidas apenas com tanino sintético, independentemente da concentração (10 ou 12%, apresentaram pior resistência à tração. Quando comparados com os que receberam 10% de taninos (vegetal e a combinação dos taninos, esses couros não apresentaram diferença na resistência.The objective of the present experiment was to evaluate the resistance of fish skins submitted to tanning using vegetable and synthetic tannins. Skins were distributed in a completelyrandomized design, with six treatments applied in the tanning stage (T1 = 10% vegetable tannin; T2 = 10% synthetic tannin; T3 = 5% vegetable tannin + 5% synthetic tannin; T4 = 12% vegetable tannin; T5 = 12% synthetic tannin; T6 = 6% vegetable tannin + 6% synthetic. Ten repetitions per treatment were conducted, and the leather was theexperimental unit. For the tests of tensile strength, lengthening and progressive tearing resistance, an EMIC dynamometer was used. Tanning with vegetable tannin, synthetic

  12. Dangers of Indoor Tanning

    Science.gov (United States)

    ... resources Meet our partners Español Donate Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / sweaty skin Eczema / dermatitis Hair and scalp ...

  13. Jevrovaljuta / Lembo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2001-01-01

    Artiklis käsitletakse Euroopa ühisraha kasutuselevõtmise ettevalmistamisega seonduvat: Euroopa Rahaliidu loomist, riikidele esitatud konvergentsikriteeriume, vaadeldakse euroga ühinenud maade üldist majandusseisundit

  14. Chrome-less Tanning of Totally Enclosed Recycling Technology Based on Zr-Al-Ti Tanning Agent%一种基于锆-铝-钛配合鞣剂的少铬鞣制全封闭式循环技术

    Institute of Scientific and Technical Information of China (English)

    何青; 但卫华; 王康建; 但年华; 欧华林

    2013-01-01

    基于锆-铝-钛配合鞣剂的少铬鞣制全封闭式循环技术,是将鞣制系统形成一个全封闭式的循环体系,在减少铬鞣剂用量的前提下,实现废鞣液的循环利用,消除重金属铬的污染;该技术不增加新的化学材料,不会带来2次污染,投资少,操作简单;锆-铝-钛配合鞣剂和铬盐的用量较少,2种鞣剂的总用量低于8%.将该系统用于黄牛鞋面革的鞣制,鞣得的坯革革身颜色浅淡,耐水洗性能良好,染色性能良好;生产的成革收缩温度超过90℃,成革物理-机械性能基本符合鞋面革的要求.%This totally enclosed circulation technique was a kind of less - chrome tanning system based on Zr - Al - Ti tanning agent. The recycling of waste tanning liquid as well as heavy metal chromium pollution eliminated could be came true, on the premise that reduced chrome complex was usad. New chemical materials would be not added without secondary pollution when the new technology was employed. It is a good method with less investment and simple operation. The dosage of Zr - Al - Ti tanning agent and the chromic salt was less and total amount of two kinds tanning agent was lower than 8% . The system was used for cattle shoe upper leather tanning, lightness color and good performance of washable and dyeing of the crust is obtained. The shrinkage temperature of finished leather is up to 90℃ , and of which physical and mechanical properties is basically in agreement with the requirements of the shoe upper leather.

  15. TaN interface properties and electric field cycling effects on ferroelectric Si-doped HfO2 thin films

    International Nuclear Information System (INIS)

    Ferroelectric HfO2-based thin films, which can exhibit ferroelectric properties down to sub-10 nm thicknesses, are a promising candidate for emerging high density memory technologies. As the ferroelectric thickness continues to shrink, the electrode-ferroelectric interface properties play an increasingly important role. We investigate the TaN interface properties on 10 nm thick Si-doped HfO2 thin films fabricated in a TaN metal-ferroelectric-metal stack which exhibit highly asymmetric ferroelectric characteristics. To understand the asymmetric behavior of the ferroelectric characteristics of the Si-doped HfO2 thin films, the chemical interface properties of sputtered TaN bottom and top electrodes are probed with x-ray photoelectron spectroscopy. Ta-O bonds at the bottom electrode interface and a significant presence of Hf-N bonds at both electrode interfaces are identified. It is shown that the chemical heterogeneity of the bottom and top electrode interfaces gives rise to an internal electric field, which causes the as-grown ferroelectric domains to preferentially polarize to screen positively charged oxygen vacancies aggregated at the oxidized bottom electrode interface. Electric field cycling is shown to reduce the internal electric field with a concomitant increase in remanent polarization and decrease in relative permittivity. Through an analysis of pulsed transient switching currents, back-switching is observed in Si-doped HfO2 thin films with pinched hysteresis loops and is shown to be influenced by the internal electric field

  16. Comparison on Virulence and Immunogenicity of Two Recombinant Vaccinia Vaccines, Tian Tan and Guang9 Strains, Expressing the HIV-1 Envelope Gene

    OpenAIRE

    Zhu, Rong; Huang, Weijin; Wang, Wenbo; Liu, Qiang; Nie, Jianhui; Meng, Shufang; Yu, Yongxin; Wang, Youchun

    2012-01-01

    Background The vaccinia virus Guang9 strain (VG9), derived from the vaccinia virus Tian Tan strain (VTT) has been found to be less virulent than VTT. Methodology/Principal Findings To investigate whether VG9 could be a potential replicating virus vector, the TK genes in VG9 and VTT were replaced with the HIV-1 envelope gene via homologous recombination, resulting in the recombinant viruses, VG9-E and VTT-E. The biology, virulence, humoral and cellular immunological responses of VG9-E and VTT-...

  17. Comparison on Virulence and Immunogenicity of Two Recombinant Vaccinia Vaccines, Tian Tan and Guang9 Strains, Expressing the HIV-1 Envelope Gene

    OpenAIRE

    Rong Zhu; Weijin Huang; Wenbo Wang; Qiang Liu; Jianhui Nie; Shufang Meng; Yongxin Yu; Youchun Wang

    2012-01-01

    BACKGROUND: The vaccinia virus Guang9 strain (VG9), derived from the vaccinia virus Tian Tan strain (VTT) has been found to be less virulent than VTT. METHODOLOGY/PRINCIPAL FINDINGS: To investigate whether VG9 could be a potential replicating virus vector, the TK genes in VG9 and VTT were replaced with the HIV-1 envelope gene via homologous recombination, resulting in the recombinant viruses, VG9-E and VTT-E. The biology, virulence, humoral and cellular immunological responses of VG9-E and VT...

  18. Deletion of C7L and K1L Genes Leads to Significantly Decreased Virulence of Recombinant Vaccinia Virus TianTan

    OpenAIRE

    Zheng Liu; Shuhui Wang; Qicheng Zhang; Meijuan Tian; Jue Hou; Rongmin Wang; Chang Liu; Xu Ji; Ying Liu; Yiming Shao

    2013-01-01

    The vaccinia virus TianTan (VTT) has been modified as an HIV vaccine vector in China and has shown excellent performance in immunogenicity and safety. However, its adverse effects in immunosuppressed individuals warrant the search for a safer vector in the following clinic trails. In this study, we deleted the C7L and K1L genes of VTT and constructed six recombinant vaccinia strains VTT△C7L, VTT△K1L, VTT△C7LK1L, VTKgpe△C7L, VTKgpe△K1L and VTT△C7LK1L-gag. The pathogenicity and immunogenicity o...

  19. Osteoporoz Tanısında Kullanılan Kemik Mineral Yoğunluğu Ölçüm Yöntemleri

    OpenAIRE

    Akpolat, Veysi Akpolat

    2008-01-01

    Bu derlemede, osteoporoz tanısında kullanılan kemik mineral yoğunluğu (KMY) ölçüm yöntemleri (Dual Energy X-ray Absorbtiometry (DXA), Single Photon Absorbtiometry (SPA), Dual Photon Absorbtiometry (DPA), Quantitative Computerised Tomography (QCT), Speed Of Sound (SOS) ve Broad Band Ultrasonic Attenuation (BUA) parametrelerini içeren ultrasonik ölçüm, Single Energy X-ray Absorbtiometry (SXA), özellikleri ve kullanım endikasyonları karşılaştırmalı olarak sunulmuştur.

  20. Temporal monitoring of subglacial volcanoes with TanDEM-X — Application to the 2014–2015 eruption within the Bárðarbunga volcanic system, Iceland

    OpenAIRE

    Rossi, Cristian; Minet, Christian; Fritz, Thomas; Eineder, Michael; Bamler, Richard

    2016-01-01

    On August 29, 2014, a lava eruption commenced in the Holuhraun plain, north-east of the Bárðarbunga caldera in Iceland. The eruption ended on February 27, 2015, thus lasting for a period of about 6 months. During these months the magma chamber below the caldera gradually deflated, feeding the eruption and causing the rare event of a slow caldera collapse. In this scenario, TanDEM-X remote sensing data are of particular interest. By producing medium-high resolution and accurate elevation model...

  1. Study of charged and neutral minimal supersymmetric standard model Higgs boson decays and measurement of tan at the compact linear collider

    Indian Academy of Sciences (India)

    E Coniavitis; A Ferrari

    2007-12-01

    The minimal supersymmetric extension of the standard model (MSSM) predicts the existence of new charged and neutral Higgs bosons. The pair creation of these new particles at the multi-TeV + - compact linear collider (CLIC), followed by decays into standard model particles, were simulated along with the corresponding background. High-energy beam-beam effects such as ISR, beamstrahlung and hadronic background were included. We have investigated the possibility of using the ratio between the number of events found in various decay channels to determine the MSSM parameter tan and we have derived the corresponding statistical error from the uncertainties on the measured cross-sections and Higgs boson masses.

  2. Ação de diferentes agentes curtentes utilizados no curtimento de peles de coelhos: testes físico-mecânicos dos couros - DOI: 10.4025/actascianimsci.v31i4.5592 Action of different tanning agents used on rabbit hide tanning: physical-mechanic tests - DOI: 10.4025/actascianimsci.v31i4.5592

    Directory of Open Access Journals (Sweden)

    Nilson do Prado Franco

    2009-10-01

    Full Text Available O objetivo do experimento foi avaliar a ação de diferentes agentes curtentes no processamento das peles de coelhos, sobre a resistência do couro. Cinquenta peles de coelhos foram submetidas a diferentes agentes curtentes na etapa de curtimento (T1 = 6% sais de cromo Chromossal B®, T2 = 22% tanino vegetal Clarotan-x8®; T3 = 22% tanino sintético Syntac CW®; T4 = 12% tanino vegetal Weibull® + 10% tanino sintético Syntac F®; T5 = 22% tanino vegetal Weibull®. Foram retirados os corpos de prova do couro, na região dorsal, no sentido longitudinal e transversal em relação ao eixo céfalo-caudal. Os agentes curtentes e retirada dos corpos de prova não influenciaram no teste de tração (9,28 a 11,63 N mm-2 e força aplicada (17,91 N a 24,85 N nos testes. Os curtimentos com sais de cromo (62,85% e Clarotan–x8® (70,28% proporcionaram maiores valores de alongamento em relação aos demais agentes curtentes utilizados. Os corpos de prova do couro no sentido transversal (59,12% apresentaram maior alongamento comparado ao longitudinal (49,72%. Os curtimentos com sais de cromo (22,70 N mm-1, Clarotan–x8® (25,94 N mm-1 e Weibull® (21,58 N mm-1 proporcionaram couros com maior resistência ao rasgamento. O sentido de retirada dos corpos de prova no couro não influenciou no rasgamento progressivo. As técnicas de curtimento com sais de cromo e Clarotan-x8® proporcionaram couros com melhores valores de resistência ao alongamento e rasgamento progressivo.The objective of the experiment was to evaluate the action of different tanning agents in the processing of rabbit hides over skin resistance. Fifty skins of rabbit hides were submitted to different tanning agents in the tanning stage (T1 = 6% Chromossal B® chrome salts; T2 = 22% Clarotan–x8® vegetable tannin; T3 = 22% Syntac CW® synthetic tannin; T4 = 12% Weibull® vegetable tannin + 10% Syntac F® synthetic tannin; T5 = 22% Weibull® vegetable tannin. The specimens were removed from

  3. The effects of process condition of top-TiN and TaN thickness on the effective work function of MOSCAP with high-k/metal gate stacks

    International Nuclear Information System (INIS)

    We introduced a TaN/TiAl/top-TiN triple-layer to modulate the effective work function of a TiN-based metal gate stack by varying the TaN thickness and top-TiN technology process. The results show that a thinner TaN and PVD-process top-TiN capping provide smaller effective work function (EWF), and a thicker TaN and ALD-process top-TiN capping provides a larger EWF; here, the EWF shifts are from 4.25 to 4.56 eV. A physical understanding of the dependence of the EWF on the top-TiN technology process and TaN thickness is proposed. Compared with PVD-TiN room temperature process, the ALD-TiN 400 °C process provides more thermal budget. It would also promote more Al atoms to diffuse into the top-TiN rather than the bottom-TiN. Meanwhile, the thicker TaN prevents the Al atoms diffusing into the bottom-TiN. These facts induce the EWF to increase. (semiconductor technology)

  4. Kinetic model of the thermal pyrolysis of chrome tanned leather treated with NaOH under different conditions using thermogravimetric analysis.

    Science.gov (United States)

    Bañón, E; Marcilla, A; García, A N; Martínez, P; León, M

    2016-02-01

    The thermal decomposition of chrome tanned leather before and after a soaking treatment with NaOH was studied using thermogravimetric analysis (TGA). The effect of the solution concentration (0.2M and 0.5M) and the soaking time (5min and 15min) was evaluated. TGA experiments at four heating rates (5, 10, 15 and 20°Cmin(-1)) were run in a nitrogen atmosphere for every treatment condition. A kinetic model was developed considering the effect of the three variables studied, i.e.: the NaOH solution concentration, the soaking time and the heating rate. The proposed model for chrome tanned leather pyrolysis involves a set of four reactions, i.e.: three independent nth order reactions, yielding the corresponding products and one of them undergoing a successive cero order reaction. The model was successfully applied simultaneously to all the experimental data obtained. The evaluation of the kinetic parameters obtained (activation energy, pre-exponential factor and reaction order) allowed a better understanding of the effect of the alkali treatment on these wastes. PMID:26603567

  5. 制革下脚料酶解物对番茄生长的影响%Effects of Enzymatic Hydrolysate of Tanning Waste on Tomato Growth

    Institute of Scientific and Technical Information of China (English)

    姚建刚; 李涛; 曹守军; 夏秀波; 张丽莉; 王虹云

    2016-01-01

    为探索新型环保肥料,研究制革下脚料酶解物的不同施用量对烟粉201番茄生长的影响。试验结果表明,以制革下脚料酶解物4.5 kg/m2为最佳施用量,与施用有机肥相比,施用制革下脚料酶解物可以提高番茄产量9%以上,同时还可以提高番茄果实品质。%In this paper, we studied the effects of different application rates of enzymatic hydrolysate of tanning waste on the growth of tomato cultivar Yanfen 201. The results showed that, compared with the same type of organic fertilizers, the enzymatic hydrolysate of tanning waste could increase the tomato yield more than 9% with the best application rate of 4.5 kg/m2, and could also improve the quality of tomato fruit.

  6. Determination of concentrations of chromium and other elements in soil and plant samples from leather tanning area by Instrumental Neutron Activation Analysis

    International Nuclear Information System (INIS)

    Chromium, one of the toxic elements, along with other elements has been determined in samples of soil and plant (leaves and seeds) from Jajmau Area, Kanpur district, India, which is irrigated with effluent waste water from leather tanning industries. Soil and plant samples were collected from these areas and analyzed by Instrumental Neutron Activation Analysis (INAA) using high flux reactor neutrons and high resolution gamma-ray spectrometry. Concentrations of fifteen elements in soil and five elements in plant samples were determined by relative method. Chromium concentrations were found to be in range of 45-3,900 mg kg-1in soil samples and 14-83 mg kg-1 in plant samples. This study showed that Cr is present in significant amounts, in the soil as well as in the plant samples, near to the leather tanning area. As a part of quality control work, IAEA reference material (RM) SL-3 and NIST standard reference material (SRM) 1645 were analyzed and the quality of the results has been evaluated by calculating % deviations from recommended/literature/certified values. (author)

  7. Doğal Turşulardan İzole Edilen Lactobacillus plantarum Suşlarının İzolasyonu ve Tanımlanması

    OpenAIRE

    ALAN, Yusuf; DIĞRAK, Metin

    2012-01-01

     Özet: Bu çalışmada doğal olarak hazırlanmış turşu örneklerinden izole edilen Lactobacillus plantarum izolatlarının kimyasal ve moleküler yöntemlerle tanımlamaları yapılmıştır. Kimyasal tanımlama gram boyama, koloni morfolojisi ve katalaz testi ile belirlenmiştir. İzole edilen laktik asit bakterilerinin moleküler tanımlaması için recA gen bölgesine spesifik primerler kullanılarak polimeraz zincir reaksiyonu (PZR) ile gerçekleştirilmiştir. recA primerleri ile gerçekleştirilen PZR işlemi s...

  8. Development of an artisanal tanning method of the acoupa weakfish (Cynoscion acoupa skin and its transfer through a workshop to a community in the city of Bragança, PA, Brazil

    Directory of Open Access Journals (Sweden)

    Bruno José Corecha Fernandes Eiras

    2015-04-01

    Full Text Available Bragança is one of the largest fishing centers in the state of Pará, northern Brazil. In the city, there are several environmental and socio-economic problems such as lack of waste management and contamination of water sources that supply to the city and the Caeté river estuary. The social and economic problems are mainly caused by social inequality, which usually occurs in communities where the population depends mainly on fishing. Fish waste forms a part of the waste disposed in the region. Fish skin represents a significant portion of this waste and may be used for manufacturing leather by the tanning process, thereby generating income for the community and reducing environmental impacts. The acoupa weakfish (Cynoscion acoupa has a high potential for tanning because of its large size and high yield of skin. The aim of this study was to develop a methodology for artisanal skin tanning of acoupa weakfish and the subsequent transfer of this methodology to a fishing community through a workshop. The methodology developed in the laboratory is more streamlined than traditional methods and is based on tanning methods cited in the literature and techniques applied in regional tanneries. To assess the quality of acoupa weakfish leather, resistance tests were performed, which proved its potential for manufacturing clothing and footwear. An economic analysis of the hypothetical production of leather based on the tanning methodology developed in this work revealed that the project is feasible and the effluents generated during the process are less harmful to the environment, compared to those generated by traditional tanning methods.

  9. Fuzzy: modelo matemático do subjetivo

    Directory of Open Access Journals (Sweden)

    Heriberto Roman Flores

    1986-11-01

    Full Text Available This work discusses basic information about fundamental concepts in the theory of fuzzy sets, and presents a new view point of things existing in various specific studies in the areas of topology, vector space measurement and integration, statistics, etc. The objectives were: 1. Compare these new concepts with tradicional ones in the classical theory of sets and 2. Try, in the teaching form, to interpret this mathematical model which reflects, in a clearer way, on human behavior. O presente trabalho pretende ser uma divulgação básica dos conceitos fundamentais da Teoria de Conjuntos Fuzzy, como uma forma de mostrar um novo enfoque de Matemática, da qual já existem estudos específicos no terreno da Topologia, Espaços Vetoriais, Medida e Integração, Estatística, etc. Tem os seguintes objetivos: lo. comparar estes novos conceitos com os conceitos tradicionais da teoria de conjuntos clássica e; 2o. tentar de forma didática, interpretar este novo modelo matemático, que reflete, de maneira mais clara, o comportamento humano.

  10. Capturing interactions between nitrogen and hydrological cycles under historical climate and land use: Susquehanna watershed analysis with the GFDL Land Model LM3-TAN

    Directory of Open Access Journals (Sweden)

    M. Lee

    2014-04-01

    Full Text Available We developed a~process model LM3-TAN to assess the combined effects of direct human influences and climate change on Terrestrial and Aquatic Nitrogen (TAN cycling. The model was developed by expanding NOAA's Geophysical Fluid Dynamics Laboratory land model LM3V-N of coupled terrestrial carbon and nitrogen (C-N cycling and including new N cycling processes and inputs such as a~soil denitrification, point N sources to streams (i.e. sewage, and stream transport and microbial processes. Because the model integrates ecological, hydrological, and biogeochemical processes, it captures key controls of transport and fate of N in the vegetation-soil-river system in a comprehensive and consistent framework which is responsive to climatic variations and land use changes. We applied the model at 1/8° resolution for a study of the Susquehanna River basin. We simulated with LM3-TAN stream dissolved organic-N, ammonium-N, and nitrate-N loads throughout the river network, and we evaluated the modeled loads for 1986–2005 using data from 15 monitoring stations as well as a reported budget for the entire basin. By accounting for inter-annual hydrologic variability, the model was able to capture inter-annual variations of stream N loadings. While the model was calibrated with the stream N loads only at the last downstream station Marietta (40.02° N, 76.32° W, it captured the N loads well at multiple locations within the basin with different climate regimes, land use types, and associated N sources and transformations in the sub-basins. Furthermore, the calculated and previously reported N budgets agreed well at the level of the whole Susquehanna watershed. Here we illustrate how point and non-point N sources contribute to the various ecosystems are stored, lost, and exported via the river. Local analysis for 6 sub-basins showed combined effects of land use and climate on the soil denitrification rates, with the highest rates in the Lower Susquehanna sub

  11. Capturing interactions between nitrogen and hydrological cycles under historical climate and land use: Susquehanna watershed analysis with the GFDL land model LM3-TAN

    Science.gov (United States)

    Lee, M.; Malyshev, S.; Shevliakova, E.; Milly, Paul C. D.; Jaffé, P. R.

    2014-01-01

    We developed a process model LM3-TAN to assess the combined effects of direct human influences and climate change on terrestrial and aquatic nitrogen (TAN) cycling. The model was developed by expanding NOAA's Geophysical Fluid Dynamics Laboratory land model LM3V-N of coupled terrestrial carbon and nitrogen (C-N) cycling and including new N cycling processes and inputs such as a soil denitrification, point N sources to streams (i.e., sewage), and stream transport and microbial processes. Because the model integrates ecological, hydrological, and biogeochemical processes, it captures key controls of the transport and fate of N in the vegetation–soil–river system in a comprehensive and consistent framework which is responsive to climatic variations and land-use changes. We applied the model at 1/8° resolution for a study of the Susquehanna River Basin. We simulated with LM3-TAN stream dissolved organic-N, ammonium-N, and nitrate-N loads throughout the river network, and we evaluated the modeled loads for 1986–2005 using data from 16 monitoring stations as well as a reported budget for the entire basin. By accounting for interannual hydrologic variability, the model was able to capture interannual variations of stream N loadings. While the model was calibrated with the stream N loads only at the last downstream Susquehanna River Basin Commission station Marietta (40°02' N, 76°32' W), it captured the N loads well at multiple locations within the basin with different climate regimes, land-use types, and associated N sources and transformations in the sub-basins. Furthermore, the calculated and previously reported N budgets agreed well at the level of the whole Susquehanna watershed. Here we illustrate how point and non-point N sources contributing to the various ecosystems are stored, lost, and exported via the river. Local analysis of six sub-basins showed combined effects of land use and climate on soil denitrification rates, with the highest rates in the

  12. 基于KL距离的TAN分类器判别性学习方法%Discriminative Learning of TAN Classifier Based on KL Divergence

    Institute of Scientific and Technical Information of China (English)

    冯奇; 田凤占; 黄厚宽

    2008-01-01

    树增强朴素贝叶斯(TAN)分类器在模型的复杂性和分类精度之间实现较好折衷,成为当前分类器学习的一个研究热点.为了提高TAN分类器的分类准确率,本文提出一种基于KL距离的TAN分类器判别性学习方法.首先用EAR方法学习TAN分类器的结构,然后用基于KL距离的目标函数优化TAN的参数.在标准数据集上的实验结果表明,用该方法学习的TAN分类器具有较高的分类精度.

  13. Projecte d’execució d’un edifici d’oficines format per tres plantes sobre rasant i un sòtan a Riudoms (Baix Camp).

    OpenAIRE

    Aguiló Camarasa, Eduard

    2012-01-01

    L’objectiu del projecte és el de dimensionar l’estructura d’un edifici destinat a oficines ubicat al polígon industrial “El Prat” de Riudoms. L’edifici esmentat consta de tres plantes sobre rasant així com també una planta sòtan destinat a places de pàrquing. Aquest treball és la modificació d’un projecte real existent, s’ha escollit una altra alternativa de disseny com és passar d’elements prefabricats a elements “in situ”, amb el seu repartiment de l’armat adient. Una de l...

  14. Attenuation of vaccinia Tian Tan strain by removal of viral TC7L-TK2L and TA35R genes.

    Directory of Open Access Journals (Sweden)

    Shifu Kan

    Full Text Available Vaccinia Tian Tan (VTT was attenuated by deletion of the TC7L-TK2L and TA35R genes to generate MVTT3. The mutant was generated by replacing the open reading frames by a gene encoding enhanced green fluorescent protein (EGFP flanked by loxP sites. Viruses expressing EGFP were then screened for and purified by serial plaque formation. In a second step the marker EGFP gene was removed by transfecting cells with a plasmid encoding cre recombinase and selecting for viruses that had lost the EGFP phenotype. The MVTT3 mutant was shown to be avirulent and immunogenic. These results support the conclusion that TC7L-TK2L and TA35R deletion mutants can be used as safe viral vectors or as platform for vaccines.

  15. Observations on Si-based micro-clusters embedded in TaN thin film deposited by co-sputtering with oxygen contamination

    Directory of Open Access Journals (Sweden)

    Young Mi Lee

    2015-08-01

    Full Text Available Using scanning electron microscopy (SEM and high-resolution x-ray photoelectron spectroscopy with the synchrotron radiation we investigated Si-based micro-clusters embedded in TaSiN thin films having oxygen contamination. TaSiN thin films were deposited by co-sputtering on fixed or rotated substrates and with various power conditions of TaN and Si targets. Three types of embedded micro-clusters with the chemical states of pure Si, SiOx-capped Si, and SiO2-capped Si were observed and analyzed using SEM and Si 2p and Ta 4f core-level spectra were derived. Their different resistivities are presumably due to the different chemical states and densities of Si-based micro-clusters.

  16. Sobre machos reales y santos ficticios: Yo no tengo la culpa de haber nacido tan sexy de Eduardo Mendicutti, entre lo global y lo local

    Directory of Open Access Journals (Sweden)

    Dieter Ingenschay

    2011-01-01

    Full Text Available En Yo no tengo la culpa de haber nacido tan sexy (1997, Eduardo Mendicutti cuenta unos episodios del “peregrinaje” de la todavía hermosa transexual Rebecca de Windsor a siete monasterios que visita en busca de la perfección religiosa y de la unión con el Amado divino. El texto despliega su estética camp a través del pastiche de los estilos, dicciones y temas de la lírica mística barroca, sobre todo por las referencias a Las Moradas de Santa Teresa de Ávila, su intertexto directo. A la vez logra describir las consecuencias de la globalización de las prácticas homosexuales y tematizar los rasgos específicos

  17. Interaction of Ionogenic Surfactants with Tanned Colagen%离子表面活性剂和胶原间的相互作用

    Institute of Scientific and Technical Information of China (English)

    J.Krejci

    2002-01-01

    研究了二十烷基苯磺酸钠(SDBS)和溴化十六烷基吡啶翁(CPB)表面活性剂同胶原纤维(BAT)的反应.在酸性环境(pH=3)和等电点条件(CrBATpH=6.5,SBATPH=4)决定了吸附作用等温线.同时.研究了底物的膨胀变化(用am表示膨胀度).已经证实了离子表面活性剂对铬鞣和植物鞣胶原的吸收.发现SDBS对CrBAT的吸收与反应的pH值无关而取决于铬进一步吸收的活性位置的含量.在酸性区域,结合SDBS不使CrBAT纤维膨胀,而CrBAT在等电点条件下存在较轻微的膨胀.CPB与CrBAT的结合量较小.在同样的反应条件下,CPB在pH=6.5时的吸收实际与其对未鞣的BAT的吸收相等.靠SBAT在高pH值下的稳定性,离子表面活性剂对SBAT的吸收要在pH=4时有效.预测SBOS的吸收更低,但等温线是S形相对于c.m.c.SDAS有一个滞后的段.CPB-SBAT和SDB5-BAT反应,当CPB对BAT吸收时纤维会发生轻微的膨胀.%The object of study was an interaction of anionactive (sodium, dodium dodecy Lbenzene sulphonate-SDBS) and catioonactive (Cetylpyridinium bromide-(CPB) surfactants with collagen fibres (BAT) tanned with Cr (Ⅲ) salts (CrBAT) and / or synthetic atnning agent Kortan FB (SBAT).Sorption isotherms were determined in an acid environment (pH=3) and under isoelectric conditions (pH=6.5 for CrBAT, pH=4 for SBAT).At the same time, changes in swelling of both substrates were investigated (expressed as mass swell-ing degree αm). Well-known facts were confirmed related to sorption of iongenic sur-factants to chrome-tanned and vegetable-tanned collagen. Sorption of SDBS to CrBAT was found to depend, heedless of reaction pH, on content of Cr fulfilling the role of a further active sorption site. In the acid region, bound SDBS causes deswelling of CrBAT fibres, while CrBAT under isoelectric conditions exhibits no marked swelling. CPB is bound to CrBAT is a mintor quantity . Sorption of CPB at pH=6.5 is practically the same as sorption of CPB to untanned BAT under

  18. Tek enfeksiyon tanılı reçetelere hekimlerin yazdığı antibiyotiklerin değerlendirilmesi

    Directory of Open Access Journals (Sweden)

    Salih Mollahaliloğlu

    2012-09-01

    Full Text Available AMAÇ: Hekimlerin enfeksiyon hastalıklarının tedavisinde, antibiyotik kullanımı konusunda çeşitli sorunlar yaşanmaktadır. Bu araştırmada hekimlerin tek enfeksiyon tanısı içeren reçetelere yazmış oldukları antibiyotiklerin ilaç kullanımı yönünden ayrıntılı olarak incelenmesi amaçlandı.YÖNTEM: Türkiye'nin 10 ilindeki birinci basamak (BB ve çeşitli hastanelerde (H yazılmış olan reçeteler eczaneye başvuru sırasında fotokopi edilerek toplandı. Bu reçeteler arasında tek tanı içeren ve antibiyotik yazılmış 951 reçete çeşitli ilaç kullanımı göstergelerine göre değerlendirildi.BULGULAR: Reçete başına düşen ilaç sayısının (RBDİS 3,11 olduğu, reçetelere yazılan ilaçların %36,1'ini antibiyotiklerin oluşturduğu saptandı. Reçete başına düşen tedavi maliyetinin (RBDTM ortalama 48,86 TL, reçete başına düşen (RBD antibiyotik maliyetinin ortalama 24,78 TL olduğu saptandı. En sık yazılan antibiyotiklerin farenjit, tonsillit ve sinüzitte amoksisilin+klavulanik asit (sırasıyla, %30,1, %42,3 ve %27,1, bronşitte sefuroksim (%16,5, idrar yolu enfeksiyonlarında ise levofloksasin (%23,2 olduğu saptandı. BB'ler ve H'lerin her birinde RBDİS, RBDTM, RBD antibiyotik sayısı ve RBD antibiyotik maliyetinin bu 5 endikasyona göre karşılaştırmasında istatistiksel olarak anlamlı derecede farklılık saptandı (p<0,05.SONUÇ: Reçetelere ortalama 3'ün üzerinde ilaç yazılmış olması yüksek bulunmuştur. Bu değerin çoklu tanıların ayıklanmadığı başka reçete analizi çalışmalarındakine yakın olması, hekimlerin polifarmasiye yatkınlıklarını düşündürmektedir. Ayrıntısı incelenen tanılar arasında farenjit, tonsillit ve sinüzitte “amoksisilin+klavulanik asidin” en sık tercih edilen antibiyotik olduğu; hekimlerin genel olarak geniş spektrumlu antibiyotikleri tercih ettiği ve bunun reçete maliyetine yansıdığı göze çarpmaktadır. Bu

  19. Observations on Si-based micro-clusters embedded in TaN thin film deposited by co-sputtering with oxygen contamination

    Science.gov (United States)

    Lee, Young Mi; Jung, Min-Sang; Choi, Duck-Kyun; Jung, Min-Cherl

    2015-08-01

    Using scanning electron microscopy (SEM) and high-resolution x-ray photoelectron spectroscopy with the synchrotron radiation we investigated Si-based micro-clusters embedded in TaSiN thin films having oxygen contamination. TaSiN thin films were deposited by co-sputtering on fixed or rotated substrates and with various power conditions of TaN and Si targets. Three types of embedded micro-clusters with the chemical states of pure Si, SiOx-capped Si, and SiO2-capped Si were observed and analyzed using SEM and Si 2p and Ta 4f core-level spectra were derived. Their different resistivities are presumably due to the different chemical states and densities of Si-based micro-clusters.

  20. Polyether Silicone Oil on Pre- fatliquoring in Chrome Tanning Process%铬鞣工艺中聚醚硅油的预加脂应用研究

    Institute of Scientific and Technical Information of China (English)

    常国勋; 郭晓琴; 高晓鸣; 陈磊; 张廷有; 李正军

    2012-01-01

    The pickled goatskin was pre- fatliquored with the polyether silicone oil and mechanical performance, such as the softness, smoothness, shrinkage temperature, specific surface area, etc. was measured. And the results indicate that polyether silicone leather fibers. before the chrome tanning. The physical water - vapor permeability, porosity and oil give the high soften performance to the leather fibers.%采用聚醚硅油预加脂处理浸酸皮后进行铬鞣,获得了高度柔软且质轻的铬鞣革,对革的感观性能、收缩温度、物理力学性能、透水汽性,以及孔隙率、比表面积等的检测结果表明,聚醚硅油对革纤维具有高效能柔软作用。

  1. A holistic approach to taxonomic evaluation of two closely related endangered freshwater mussel species, the oyster mussel Epioblasma capsaeformis and tan riffleshell Epioblasma florentina walkeri (Bivalvia: Unionidae)

    Science.gov (United States)

    Jones, J.W.; Neves, R.J.; Ahlstedt, S.A.; Hallerman, E.M.

    2006-01-01

    Species in the genus Epioblasma have specialized life history requirements and represent the most endangered genus of freshwater mussels (Unionidae) in the world. A genetic characterization of extant populations of the oyster mussel E. capsaeformis and tan riffleshell E. florentina walkeri sensu late was conducted to assess taxonomic validity and to resolve conservation issues for recovery planning. These mussel species exhibit pronounced phenotypic variation, but were difficult to characterize phylogenetically using DNA sequences. Monophyletic lineages, congruent with phenotypic variation among species, were obtained only after extensive analysis of combined mitochondrial (1396 bp of 16S, cytochrome-b, and ND1) and nuclear (515 bp of ITS-1) DNA sequences. In contrast, analysis of variation at 10 hypervariable DNA microsatellite loci showed moderately to highly diverged populations based on FST and R ST values, which ranged from 0.12 to 0.39 and 0.15 to 0.71, respectively. Quantitative variation between species was observed in fish-host specificity, with transformation success of glochidia of E. capsaeformis significantly greater (P<0.05) on greenside darter Etheostoma blennioides, and that of E. f. walkeri significantly greater (P<0.05) on fantail darter Etheostoma flabellare. Lengths of glochidia differed significantly (P<0.001) among species and populations, with mean sizes ranging from 241 to 272 ??m. The texture and colour of the mantle-pad of E. capsaeformis sensu stricto is smooth and bluish-white, whereas that of E. f. walkeri is pustuled and brown, with tan mottling. Based on extensive molecular, morphological and life history data, the population of E. capsaeformis from the Duck River, Tennessee, USA is proposed as a separate species, and the population of E. f. walkeri from Indian Creek, upper Clinch River, Virginia, USA is proposed as a distinct subspecies.

  2. [Gao Jingyi. Han yu yu bei Ou yu yan : Han yu yu Wula'er yu yan ji Yin Ou yu yan tong yuan tan jiu] / Ago Künnap

    Index Scriptorium Estoniae

    Künnap, Ago, 1941-

    2010-01-01

    Arvustus: Gao Jingyi. Han yu yu bei Ou yu yan : Han yu yu Wula'er yu yan ji Yin Ou yu yan tong yuan tan jiu = Chinese language and languages of northern Europe. Beijing : Zhongguo she hui ke xue chu ban she, 2008

  3. 多晶TaN1-δ薄膜的电输运性质研究∗%Electrical transp ort prop erties of p olycrystalline TaN1-δ films

    Institute of Scientific and Technical Information of China (English)

    周定邦; 刘新典; 李志青

    2015-01-01

    Tantalum nitride with a face-centered cubic structure (TaN1−δ) has received much attention due to its high hard-ness, good wear resistance, chemical inertness, thermodynamic stability, and low temperature coefficients of resistivity. First-principles calculations have indicated that cubic-TaN possesses metallic energy band structure, and the experi-mental results show that the carrier concentration in TaN1−δ films are comparable to that of normal metals. However, semiconductor-like temperature behavior of resistivity is often observed in polycrystalline TaN1−δ film. In the present paper, we systematically study the crystal structures and electrical transport properties of a series of TaN1−δ thin films, deposited on quartz glass substrates at different temperatures by the rf sputtering method. Both X-ray diffraction patterns and scanning electron microscope images indicate that the films are polycrystalline and have face-centered cubic structure. It is also found that the mean grain sizes of the films gradually increase with increasing depositing temperature. The temperature dependence of resistivity is measured from 350 K down to 2 K. The films with large grain sizes have a superconductor-insulator transition below ∼ 5 K, while the films with small grain sizes retain the semiconductor characteristics down to the minimum measuring temperature, 2 K. These phenomena are similar to that observed in superconductor-insulator granular composites. Above 5 K, the temperature coefficients of the resistivities of the films are all negative. In the temperature range between 10 and 30 K, the films show hopping transport properties which are often seen in metal-insulator granular systems, i. e. the logarithm of the resistivity (logρ) varies linearly with T−1/2, where T represents the measured temperature. The thermal fluctuation-induced tunneling conductive mechanism dominates the temperature behaviors of resistivities from 70 K up to 350 K. It can be seen that

  4. 溶剂处理对有机鞣革耐湿热稳定性影响%Influence of Solvents Treatment on Hydrothermal Stability of Organic Tanning Leathers

    Institute of Scientific and Technical Information of China (English)

    李建波; 杨永伟; 陈慧; 单志华

    2012-01-01

    以甲醛、戊二醛、嗯唑烷、坚木栲胶为鞣剂,分别对绵羊皮进行醛鞣、植一醛结合鞣。得到的革样采用中性水、0.5mol/L脲溶液、2.5%十二烷基硫酸钠、菜油、甘油、机油做溶剂处理。通过对处理后革样耐湿热稳定性(Ts)的测定,探讨溶剂对醛鞣革及植-醛结合鞣革耐湿热稳定性的影响。结果表明:十二烷基硫酸钠对革样Ts影响最大,其次是脲溶液和甘油。十二烷基硫酸钠对干态下嗯唑烷革样的Ts降低了9.4℃、干态下植一嗯唑烷结合鞣革降低了3.6℃。非极性溶剂表现出有趣的作用结果,植物油和机油对醛鞣革样作用后Ts升高,对植一醛结合鞣革样作用后Ts降低。说明不同极性的溶剂对鞣剂与胶原的结合有着各不相同的作用机制。%Using formaldehyde, glutaraldehyde, oxaz01idine as aldehyde tanning agents and quebracho as vegetable tanning a- gent, the sheep skins were tanned by aldehyde and vegetable - aldehyde combination process respectively. Then the gained leather samples were dropped into the solvent which were distilled water, 0. 5mol/L urea, 2. 5% sodium dodecyl sulfate, vegetable oil, glycerol and engine oil. To study the influence of different solvents on the aldehyde tanning and vegetable - aldehyde combination tanning leathers, hydrothermal stability of the samples were measured. The results show that the sodium dodecyl sulfate has the most obvious effect on leather samples, especially on oxazolidine tanning drying leather, the hydrothermal stability decreased by 9.4℃ The hydrothermal stability decreases by 3.6℃ by the vegetable - oxazolidine combination tanning drying state leather. The fol- lowing solvents in that order were urea and glycerol. Hydrothermal stability of aldehyde tanning leather is improved, and that of vegetable - aldehyde combination tanning leathers is decreased by vegetable oil and engine oil, respectively. It shows that

  5. A wrist-walker exhibiting no "Uner Tan Syndrome": a theory for possible mechanisms of human devolution toward the atavistic walking patterns.

    Science.gov (United States)

    Tan, Uner

    2007-01-01

    After discovering two families with handicapped children exhibiting the "Uner Tan syndrome," the author discovered a man exhibiting only wrist-walking with no primitive mental abilities including language. According to his mother, he had an infectious disease with high fever as a three months old baby; as a result, the left leg had been paralyzed after a penicilline injection. This paralysis most probably resulted from a viral disease, possibly poliomyelitis. He is now (2006) 36 years old; the left leg is flaccid and atrophic, with no tendon reflexes; however, sensation is normal. The boy never stood up on his feet while maturing. The father forced him to walk upright using physical devices and making due exercises, but the child always rejected standing upright and walking in erect posture; he always preferred wrist-walking; he expresses that wrist-walking is much more comfortable for him than upright-walking. He is very strong now, making daily body building exercises, and walking quite fast using a "three legs," although he cannot stand upright. Mental status, including the language and conscious experience, is quite normal. There was no intra-familiar marriage as in the two families mentioned earlier, and there is no wrist-walking in his family and relatives. There were no cerebellar signs and symptoms upon neurological examination. The brain-MRI was normal; there was no atrophy in cerebellum and vermis. It was concluded that there may be sporadic wrist-walkers exhibiting no "Uner Tan Syndrome." The results suggest that the cerebellum has nothing to do with human wrist-walking, which may rather be an atavistic trait appearing from time to time in normal individuals, indicating a live model for human reverse evolution. It was concluded that pure quadrupeds may sporadically appear due to random fluctuations in genotypes and/or environmental factors (hormonal or nutritional); the human development following the human evolution may be stopped in the stage of

  6. Efecto de los biorreguladores del crecimiento en la embriogénesis somática de mandarina Cleopatra (Citrus reshni Hort. ex Tan.

    Directory of Open Access Journals (Sweden)

    Reina M. Hernández

    2010-01-01

    Full Text Available La regeneración de plantas in vitro vía embriogénesis somática es un prerrequisito indispensable, para la aplicación de algunas herramientas de la Biotecnología en la mejora genética de las plantas y más aún en el caso de los cítricos. Para aumentar la cantidad de estos cultivos en las plantaciones, se pueden usar técnicas de propagación in vitro, como la embriogénesis somática, que requieren de medios de cultivo artificiales y fitohormonas. Debido a los altos costos de las fitohormonas, una alternativa cubana es el uso de biorreguladores del crecimiento de producción nacional, como el Pectimorf ® y los análogos de brasinoesteroides: Biobras-6 y MH5. Estos biorreguladores, al igual que el 24-Epibrasinólido, son efectivos en los procesos morfogenéticos, generalmente a bajas concentraciones, como sustitutos o complementos de las auxinas y citoquininas. Se empleó la técnica de cultivo de óvulos fecundados in vitro, para obtener una línea celular embriogénica de Citrus reshni Hort. ex Tan y como fuente de óvulos fecundados, se tomaron ovarios de dicha especie procedentes de árboles de la Estación de Cítricos de Ceiba del Agua en Caimito, provincia La Habana. Para el mantenimiento de la línea embriogénica, se utilizaron callos embriogénicos de la línea celular establecida. Este trabajo estuvo dirigido a evaluar el efecto del Pectimorf ® y los brasinoesteroides, MH5, Biobras-6 y 24-Epibrasinólido, en la obtención y el mantenimiento de la línea celular embriogénica de mandarina Cleopatra (Citrus reshni Hort. ex Tan.. En los resultados se pudo comprobar un incremento en la masa fresca del callo embriogénico en un menor tiempo de cultivo mediante el uso de estos biorreguladores.

  7. Decorative Performance of Transparent Resin on the Vegetable Tanned Footwear%透明树脂在植鞣革鞋靴上的装饰性表现

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    With its outstanding transparency, strong and modern, simple molding methods, the transparent resin has a strong effect on the traditional materials market. In this paper, the crystal clear sense of transparent resin was applied to the traditional vegetable tanned footwear in the form of surface decoration. It can be found through experiments, epoxy resin and unsaturated polyester resin are preferable in many transparent resin:A and B plastic resin of the epoxy according to 1∶3 ratio to mix, wetting the leather surface to be soft, and then which is to drop in the prior beat of leather surface, to place in a constant temperature oven, it can form a transparent and glossy effect on the vegetable tanned leather.%透明树脂以其突出的透明度、强烈的现代气息、简单的成型方式等不断冲击着传统材料的市场。本文将透明树脂这种晶莹剔透感以表面装饰的形式应用到传统的植鞣革鞋靴上,形成强烈的对比。但透明树脂种类繁多,而通过实验发现,环氧树脂和不饱和聚酯树脂在皮革表面的附着力最好,故以其为材料确定了透明树脂在皮革上的装饰性表现方法:将环氧树脂A胶、B胶,按照1∶3的比例调配,润湿皮革表面待皮革变软,再将其滴在事先敲打好的皮革表面凹槽中,然后放在一定温度的烘箱中等树脂凝固,便可以在树羔皮上形成透明又光泽的效果。

  8. Avaliação da resistência da pele de tilápia do Nilo (Oreochrmis niloticus nos sentidos longitudinal, transversal e diagonal, depois de submetida ao curtimento com sais de cromo e recurtimento com diferentes agentes curtentes = Evaluation of resistance of the Nile tilapia (Oreochromis niloticus skin in longitudinal, transversal and diagonal position after tanning with chromium salts and retanning with different tanning substances

    Directory of Open Access Journals (Sweden)

    Maria Luiza Rodrigues de Souza

    2006-07-01

    Full Text Available O objetivo do trabalho foi avaliar a resistência da pele da Tilápia do Nilo (Oreochromis niloticus no sentido longitudinal, transversal e diagonal, depois de curtida com sais de cromo e recurtida por diferentes técnicas de recurtimento. As peles foram distribuídas em delineamento inteiramente casualizado, em fatorial 3x3, sendo 3 técnicas de recurtimento (T1 = com 4% de sais de cromo; T2 = 6% com taninos vegetais e T3 = com 6% de taninos sintéticos e 3 posições de retirada dos corpos-de-prova (P1 = longitudinal; P2 = transversal e P3 = diagonal, com 6 repetições por tratamento, em triplicata. O couro foi considerado a unidade experimental. Para os testes dedeterminação da resistência à tração, ao alongamento e ao rasgamento progressivo, foi utilizado o dinamômetro EMIC. A espessura dos couros variou de 1,00 a 1,20 mm, não diferindo entre as técnicas de recurtimento. Não houve diferença significativa para tração quanto às técnicas de recurtimento, porém, quanto à posição de retirada dos corpos-de-prova, foi significativamente maior para transversal (11,92 N/mm2. A técnica de recurtimento e a posição não influenciaram norasgamento progressivo (variou de 24,47 a 29,12 N/mm. O couro na posição transversal apresentou maior alongamento independentemente da técnica aplicada, não diferindo apenas na técnica T2 para a posição longitudinal. A pele recurtida com sais de cromo e no sentido transversal apresentou maior resistência à tração e ao alongamento. O recurtimento e a posição não interferiram no rasgamento progressivo.The objective of this experiment was to evaluate the resistance of the Nile tilapia (Oreochromis niloticus skin in longitudinal, transversal and diagonal sections after tanning with chromium salts and re-tanning with different tanning substances. Skins were distributed in a totally randomized design, 3 by 3, with three re-tanning techniques (T1 = with 4% chromium salts; T2 = 6% vegetal

  9. Comparison on virulence and immunogenicity of two recombinant vaccinia vaccines, Tian Tan and Guang9 strains, expressing the HIV-1 envelope gene.

    Directory of Open Access Journals (Sweden)

    Rong Zhu

    Full Text Available BACKGROUND: The vaccinia virus Guang9 strain (VG9, derived from the vaccinia virus Tian Tan strain (VTT has been found to be less virulent than VTT. METHODOLOGY/PRINCIPAL FINDINGS: To investigate whether VG9 could be a potential replicating virus vector, the TK genes in VG9 and VTT were replaced with the HIV-1 envelope gene via homologous recombination, resulting in the recombinant viruses, VG9-E and VTT-E. The biology, virulence, humoral and cellular immunological responses of VG9-E and VTT-E were evaluated. Our results indicated no obvious difference in range of host cells and diffusion between two recombinant viruses. Neurovirulence for VG9-E in weanling and suckling mice, and skin virulence in rabbits, were lower than that of VTT-E. The humoral immune responses, including binding antibody and neutralizing antibody responses, induced by VG9-E were not significantly different from those for VTT-E whilst IFN-γ response which represented cellular immune response induced by VG9-E was significantly higher than that did by VTT-E. CONCLUSIONS/SIGNIFICANCE: Our results indicated that VG9-E was less virulent, yet induced higher cellular immune response than VTT-E. Therefore, it could be an ideal replicating vaccinia vector for HIV vaccine research and development.

  10. Evaluation of isotopic diagnostics for subsurface characterization and monitoring: Field experiments at the TAN and RWMC (SDA) Sites, INEL. 1998 annual progress report

    International Nuclear Information System (INIS)

    'This research is aimed at improving methods for characterizing underground contamination sites and for monitoring how they change with time. Particular emphasis is placed on identifying and quantifying the effects of intrinsic remediation, and verifying the efficacy of engineered remediation activities. Isotopic measurements of elements like C, O, H, He, Cl, and Sr, which are present in groundwater and soil gas, provide a quantitative measure of material balance. They can be used to identify the sites of origin of contaminants in groundwater, and to determine if contaminants are being destroyed as a result of natural processes or engineered processes. Isotope ratios can also be used to trace the migration of fluids that are pumped down wells to destroy or confine underground contaminants, such as steam and grout, and they can be used to diagnose what chemical reactions are occuring underground and what materials are reacting. For example, destruction of TCE usually produces carbon dioxide, but carbon dioxide can also come from dissolution of calcite. There are many isotopic ratios that can be measured in groundwater and vadose zone gas that could be valuable for characterizing remediation sites and monitoring remediation activities. The authors concentrate on a few that are particularly useful for the problems being addressed at the TAN (Test Area North) and RWMC (Radioactive Waste Management Complex) sites of the Idaho National Engineering Lab.. The isotopes the authors are using are carbon-13, carbon-14, helium-3, strontium-87, chlorine-37, and oxygen-18.'

  11. Geochronological and geochemical constraints on genesis of the adakitic rocks in Outang, South Tan-Lu Fault Belt (Northeastern Yangtze Block)

    Science.gov (United States)

    Hu, Zilong; Yang, Xiaoyong; Duan, Liuan; Sun, Weidong

    2014-06-01

    The Outang intrusion was newly found near the South Tan-Lu fault belt (STLF) of the northeastern margin of Yangtze block due to the excavating construction of the Beijing-Shanghai high-speed railway. Observations show that lithology of the Outang intrusion is intermediate rock series, mainly composed of monzodiorite and quartz monzonite. Major and trace elements, zircon U-Pb dating and Hf isotope were analyzed. Two ages of 124.6 ± 2.9 Ma (MSWD = 0.60, n = 29) and 129.2 ± 4.1 Ma (MSWD = 1.5, n = 21) are obtained, showing that the regional igneous activity was in early Cretaceous, being consistent with the massive Yanshanian magmatic events in Eastern China. The quartz monzonite was identified as a high-Mg adakitic rocks, showing geochemical features of high Si, high K, and low Sr, which indicates that the igneous genesis may be results of partial melting of the delaminated lower crust. The negative εHf(t) values with much older tDM2 ages indicate that the original magma may derive from remelting of ancient continental crust. A tectonic model has been proposed to account for the massive subduction of the Pacific Plate beneath eastern China in Jurassic with effect of delamination and thinning, from which we conjecture that the Archean materials could compose the basement of the STLF caused by massive subduction of the Pacific Plate beneath the eastern China continent.

  12. Identification and Structural Characterization of the ALIX-Binding Late Domains of Simian Immunodeficiency Virus SIV mac239 and SIV agmTan-1

    Energy Technology Data Exchange (ETDEWEB)

    Q Zhai; M Landesman; H Robinson; W Sundquist; C Hill

    2011-12-31

    Retroviral Gag proteins contain short late-domain motifs that recruit cellular ESCRT pathway proteins to facilitate virus budding. ALIX-binding late domains often contain the core consensus sequence YPX{sub n}L (where X{sub n} can vary in sequence and length). However, some simian immunodeficiency virus (SIV) Gag proteins lack this consensus sequence, yet still bind ALIX. We mapped divergent, ALIX-binding late domains within the p6{sup Gag} proteins of SIV{sub MAC239} ({sub 40}SREK{und P}YKE{und VT}ED{und L}LHLNSLF{sub 59}) and SIV{sub agmTan-1} ({sub 24}AAG{und A}YDP{und AR}KL{und L}EQYAKK{sub 41}). Crystal structures revealed that anchoring tyrosines (in lightface) and nearby hydrophobic residues (underlined) contact the ALIX V domain, revealing how lentiviruses employ a diverse family of late-domain sequences to bind ALIX and promote virus budding.

  13. Identification and Structural Characterization of the ALIX-Binding Late Domains of Simian Immunodeficiency Virus SIVmac239 and SIVagmTan-1

    Energy Technology Data Exchange (ETDEWEB)

    Zhai, Q.; Robinson, H.; Landesman, M. B.; Sundquist, W. I.; Hill, C. P.

    2011-01-01

    Retroviral Gag proteins contain short late-domain motifs that recruit cellular ESCRT pathway proteins to facilitate virus budding. ALIX-binding late domains often contain the core consensus sequence YPX{sub n}L (where X{sub n} can vary in sequence and length). However, some simian immunodeficiency virus (SIV) Gag proteins lack this consensus sequence, yet still bind ALIX. We mapped divergent, ALIX-binding late domains within the p6{sup Gag} proteins of SIV{sub mac239} ({sub 40}SREK{und P}YKE{und VT}ED{und L}LHLNSLF{sub 59}) and SIV{sub agmTan-1} ({sub 24}AAG{und A}YDP{und AR}KL{und L}EQYAKK{sub 41}). Crystal structures revealed that anchoring tyrosines (in lightface) and nearby hydrophobic residues (underlined) contact the ALIX V domain, revealing how lentiviruses employ a diverse family of late-domain sequences to bind ALIX and promote virus budding.

  14. Lifestyle, sun worshipping and sun tanning - what about UV-A sun beds. Livsstil, soling og bruning - hva med UV-A solarier

    Energy Technology Data Exchange (ETDEWEB)

    Thune, P. (Ullevaal Sykehus, Oslo (Norway))

    1991-06-01

    This article considers the effects of ultraviolet (UV) light from the sun and UV-A sun beds on the skin. Sun worshipping and sun therapy has been en vogue for centuries, but in another way than used today. A changing lifestyle has led to an increase of various skin diseases, including skin cancer. Short wave UV-light (UV-B) in particular has been blamed for inducing not only erythema and pigmentation but also more chronic skin lesions. Long wave UV-light (UV-A) has been shown to be the cause of similar changes to the skin but the pigmentation is of another quality and affords less protection against the harmful effects of UV-B. A concept of sun reactive skin typing has been created. This is based on self-reported responses to an initial exposure to sun as regards tanning ability and erythema reaction. These two factors have certain practical consequences, not only for UV-phototherapy but also for a person's risk of developing skin cancer. Recently, several research groups and dermatologists have discouraged extensive use of UV-A sun beds because of side effects of varying degrees of seriousness. The possible implications of these side effects for the organism are not fully elucidated and may be more profound than known today. The British Photodermatology Group has issued more stringent rules for persons who, despite advice to the contrary, still wish to use UV-A sun beds. 14 refs., 1 tab.

  15. Tanzimat'tan günümüze Türkiye'de mesleki ve teknik eğitim politikaları

    OpenAIRE

    Tosun, Tolga

    2010-01-01

    Tanzimat'tan Avrupa Birliği'ne giriş sürecine kadar geçen dönemde, iktidara gelen her siyasi oluşum Türk mesleki ve teknik eğitim politikalarına kendi görüşü doğrultusunda yön vermiştir. Bu tezin amacı, Türkiye'de dönemsel olarak değişen, ülkemizde uygulanan mesleki ve teknik eğitim politikalarının incelenmesidir. Bu çalışmada; eğitim, mesleki ve teknik eğitim kavramlarına açıklık getirilerek başlanmış ve bu kavramların siyaset, yönetim ve ekonomi ile olan ilişkisi ortaya konulmuştur. Mesleki...

  16. Application of the Health Belief Model to U.S. Magazine Text and Image Coverage of Skin Cancer and Recreational Tanning (2000-2012).

    Science.gov (United States)

    McWhirter, Jennifer E; Hoffman-Goetz, Laurie

    2016-01-01

    The health belief model (HBM) has been widely used to inform health education, social marketing, and health communication campaigns. Although the HBM can explain and predict an individual's willingness to engage in positive health behaviors, its application to, and penetration of the underlying constructs into, mass media content has not been well characterized. We examined 574 articles and 905 images about skin cancer and tanning risks, behaviors, and screening from 20 U.S. women's and men's magazines (2000-2012) for the presence of HBM constructs: perceived susceptibility, perceived severity, perceived benefits, perceived barriers, self-efficacy, and cues to action. Susceptibility (48.1%) and severity (60.3%) information was common in text. Perceived benefits (36.4%) and barriers (41.5%) to prevention of skin cancer were fairly equally mentioned in articles. Self-efficacy (48.4%) focused on sunscreen use. There was little emphasis on HBM constructs related to early detection. Few explicit cues to action about skin cancer appeared in text (12.0%) or images (0.1%). HBM constructs were present to a significantly greater extent in text versus images (e.g., severity, 60.3% vs. 11.3%, respectively, χ(2) = 399.51, p < .0001; benefits prevention, 36.4% vs. 8.0%, respectively, χ(2) = 184.80, p < .0001), suggesting that readers are not visually messaged in ways that would effectively promote skin cancer prevention and early detection behaviors. PMID:26940663

  17. Correlation between bulk- and surface chemistry of Cr-tanned leather and the release of Cr(III) and Cr(VI).

    Science.gov (United States)

    Hedberg, Yolanda S; Lidén, Carola; Odnevall Wallinder, Inger

    2014-09-15

    About 1-3% of the adult general population in Europe is allergic to chromium (Cr). The assessment of the potential release of Cr(III) and Cr(VI) from leather is hence important from a human health and environmental risk perspective. The Cr(VI) content in leather was recently restricted in the European Union. The aim of this study was to assess possible correlations between the bulk and surface chemistry of leather, released Cr(III) and Cr(VI), and capacities of co-released leather specific species to reduce and complex released Cr. Four differently tanned leathers were characterized by scanning electron microscopy with energy dispersive spectroscopy, X-ray photoelectron spectroscopy, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and the diphenylcarbazide colorimetric method. Their characteristics were compared with results on Cr(III) and Cr(VI) release into artificial sweat (ASW, pHleather-specific species were shown to reduce Cr(VI), both in ASW and in PB. Their reduction capacities correlated with findings of the surface content of Cr and of released Cr. Leather samples without this capacity, and with less aromatic surface groups visible by ATR-FTIR, revealed Cr(VI) both at the surface and in solution (PB). PMID:25222930

  18. Enzyme-mediated bacterial biodegradation of an azo dye (C.I. Acid blue 113): reuse of treated dye wastewater in post-tanning operations.

    Science.gov (United States)

    Senthilvelan, T; Kanagaraj, J; Panda, R C

    2014-11-01

    "Dyeing" is a common practice used to color the hides during the post-tanning operations in leather processing generating plenty of wastewater. The waste stream containing dye as pollutant is severely harmful to living beings. An azo dye (C.I. Acid Blue 113) has been biodegraded effectively by bacterial culture mediated with azoreductase enzyme to reduce the pollution load in the present investigation. The maximum rate of dye degradation was found to be 96 ± 4 and 92 ± 4 % for the initial concentrations of 100 and 200 mg/l, respectively. The enzyme activity was measured using NADH as a substrate. Fourier transform infrared spectroscopy (FT-IR) analysis was confirmed that the transformation of azo linkage could be transformed into N2 or NH3 or incorporated into complete biomass. Breaking down of dye molecules to various metabolites (such as aniline, naphthalene-1,4-diamine, 3-aminobenzenesulfonic acid, naphthalene-1-sulfonic acid, 8-aminonaphthalene-1-sulfonic acid, 5,8-diaminonaphthalene-1-sulfonic acid) was confirmed by gas chromatography and mass spectra (GC-MS) and mass (electrospray ionization (ESI)) spectra analysis. The treated wastewater could be reused for dyeing operation in the leather processing, and the properties of produced leather were evaluated by conventional methods that revealed to have improved dye penetration into the grain layer of experimental leather sample and resulted in high levelness of dyeing, which helps to obtain the desired smoothness and soft leather properties. PMID:25163883

  19. Dinle İlgili Düşünce, Tanım ve Algılamalar / Detection of Relevant Thought And Perceptions

    OpenAIRE

    ARSLAN, Dr. Hasan

    2010-01-01

    Günümüzde dinle ilgili çok çeşitli düşünce tarif ve algıların mevcut olduğu anlaşılmaktadır. Tanım ve algılamaların genel olarak vahiy ve materyalist bir eksende yapıldığını söyleyebiliriz. Bazı din algılamalarında ise kurumsal din eleştirilmektedir. Vahiyci bakış açısıyla yapılan tarifler arasında sadece Matüridi din tarifine 'aklı' dahil etmiştir. O dini akılla aynı görmektedir. Diğerlerinin daha çok 'iyi bir kul olmaya yönelik' görüşleri vurguladıklarını anlıyoruz. Dinle ilgili düşünce ve ...

  20. Could naphthenic acids be responsible for severe emulsion tightness for a low TAN value oil? Part 1 : position of the problem

    Energy Technology Data Exchange (ETDEWEB)

    Pauchard, V. [Saudi Aramco, Dhahran (Saudi Arabia). Research and Development Center; Sjoblom, J. [Norwegian Univ. of Technology, Trondheim (Norway). Ugelstad Laboratory; Kokal, S. [Saudi Aramco, Dhahran (Saudi Arabia). EXPEC Advanced Research Center

    2008-07-01

    This paper reported on a study which analyzed the emulsion stabilizing properties of a low total acid number (TAN) crude oil in terms of the role of naphthenic acids. In particular, the study investigated how a low amount of naphthenic acids could lead to severe emulsion problems. Preliminary tests at atmospheric pressure with de-carbonated water demonstrated that emulsion tightness increased considerably with pH, which confirmed the assumption that a third mechanism was involved besides pressure decay and the precipitation of asphaltenes and calcite. The organic acids were then extracted from the oil by means of Ion Exchange Resin and the interfacial activity was characterized. These acids were found to have a very high affect on interfacial tension at low dosage and exhibited most of the features observed with the ARN tetra-acids that were first identified in deposits from North Sea fields. There was no analytical evidence of the presence of such acids in the oil. Instead, the considered oil may contain a non-identified acids family that is prone to form a gel like layer at the surface of water droplets, thereby stabilizing the emulsion.

  1. Dependences of effective work functions of TaN on HfO{sub 2} and SiO{sub 2} on post-metallization anneal

    Energy Technology Data Exchange (ETDEWEB)

    Sugimoto, Youhei; Kajiwara, Masanari; Yamamoto, Keisuke; Suehiro, Yuusaku [Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580 (Japan); Wang Dong [Art, Science and Technology Center for Cooperative Research, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580 (Japan); Nakashima, Hiroshi [Art, Science and Technology Center for Cooperative Research, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580 (Japan)], E-mail: nakasima@astec.kyushu-u.ac.jp

    2008-11-03

    We fabricated TaN-gate electrodes on HfO{sub 2} and SiO{sub 2} films by wet etching using NH{sub 4}OH/H{sub 2}O{sub 2} solution and investigated the electrical and structural properties of the TaN/SiO{sub 2} and TaN/HfO{sub 2} interfacial layers. The effective work function ({phi}{sub m,eff}) of TaN on SiO{sub 2} and HfO{sub 2} are 4.4 and 4.6 eV, respectively. The {phi}{sub m,eff} on SiO{sub 2} remained constant after post-metallization anneal (PMA) at temperatures of up to 750 deg. C and increased after 900 deg. C, but the {phi}{sub m,eff} on HfO{sub 2} increased after PMA at 750 deg. C. The analysis by X-ray photoelectron spectroscopy (XPS) indicated that Ta oxide was formed near the TaN/SiO{sub 2} and TaN/HfO{sub 2} interfacial layers after the annealing at 900 deg. C. It was concluded that the {phi}{sub m,eff} instability is strongly associated with the Ta-O bond formation at the interfaces.

  2. Dependences of effective work functions of TaN on HfO2 and SiO2 on post-metallization anneal

    International Nuclear Information System (INIS)

    We fabricated TaN-gate electrodes on HfO2 and SiO2 films by wet etching using NH4OH/H2O2 solution and investigated the electrical and structural properties of the TaN/SiO2 and TaN/HfO2 interfacial layers. The effective work function (Φm,eff) of TaN on SiO2 and HfO2 are 4.4 and 4.6 eV, respectively. The Φm,eff on SiO2 remained constant after post-metallization anneal (PMA) at temperatures of up to 750 deg. C and increased after 900 deg. C, but the Φm,eff on HfO2 increased after PMA at 750 deg. C. The analysis by X-ray photoelectron spectroscopy (XPS) indicated that Ta oxide was formed near the TaN/SiO2 and TaN/HfO2 interfacial layers after the annealing at 900 deg. C. It was concluded that the Φm,eff instability is strongly associated with the Ta-O bond formation at the interfaces

  3. Úlceras por presión como indicador de calidad asistencial

    OpenAIRE

    Riaga Quevedo, Virginia

    2013-01-01

    Calidad en salud puede parecer en principio un concepto extenso, confuso, subjetivo. Pero se trata de un concepto concreto, claro, medible. Debemos medir nuestra propia actuación como profesionales en la práctica clínica, algo a lo que probablemente no estamos muy habituados ni lo suficientemente formados, pero necesario para realizar las intervenciones oportunas para mejorarla. El uso de indicadores de calidad permite objetivar aspectos relevantes de la asistencia, establecer comparaciones, ...

  4. Doğuştan Kalça Çıkığında Pavlik Bağı İle Tedavinin Ultrasonografik takibi

    OpenAIRE

    Aksoy, Osman Gazi; Aksoy, Fatma Gül; Telli, İlhami; Esen, Firuzan

    2009-01-01

    SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 1996 Haziran; 3(2) DOĞUŞTAN KALÇA ÇIKIĞINDA PAVLİK BAĞI İLE TEDAVİNİN ULTRASONOGRAFİK TAKİBİ Osman Gazi AKSOY Fatma Gül AKSOY İlhami TELLİ Firuzan ESEN Özet Eylül 1993-Mayıs 1996 tarihleri arasında Graf metoduna göre ultrasonografik olarak doğuştan kalça çıkığı teşhisi konmuş 180 hasta (246 kalça) ultrasonografik maturasyon sağlanıncaya kadar Pavlik Bağı ile tedavi edildi. Kız çocukların sayısı 146...

  5. The Problems and Solution of Rabbit Skin in the processing of Tanning and Dying%我国兔皮鞣染加工面临的问题及对策

    Institute of Scientific and Technical Information of China (English)

    张宗才; 李敏

    2015-01-01

    This paper summarizes the environmental pollution problems in the process of rabbit skin tanning and dying, the limited quantity of the harmful chemicals in rabbit fur products, and the discharge standards from leather and fur processing industrial water pollutant effecting on the fur processing industrial. The techno⁃logical measures for ecological tanning and dyeing dressing of rabbit skin are propose.%本文概述了兔毛皮在鞣染过程中存在的环境污染问题,兔皮制品中有害化学物质的限量,以及新发布的《制革及毛皮加工工业水污染物排放标准》对兔皮加工企业的影响;提出了为满足兔毛皮生态指标要求的技术措施与对策。

  6. A search for neutral Higgs bosons at high tan beta in multi-jet events from p anti-p collisions at s**(1/2) = 1960-GeV

    Energy Technology Data Exchange (ETDEWEB)

    Haas, Andrew C

    2004-06-01

    The Higgs mechanism preserves the gauge symmetries of the Standard Model while giving masses to the W, Z bosons. Supersymmetry, which protects the Higgs boson mass scale from quantum corrections, predicts at least 5 Higgs bosons, none of which has been directly observed. This thesis presents a search for neutral Higgs bosons, produced in association with bottom quarks. The production rate is greatly enhanced at large values of the Supersymmetric parameter tan {beta}. High-energy p{bar p} collision data, collected from Run II of the Fermilab Tevatron using the D0 detector, are analyzed. In the absence of a signal, values of tan {beta} > 80-120 are excluded at 95% Confidence Level (C.L.), depending on the (CP-odd) neutral Higgs boson mass (studied from 100 to 150 GeV/c{sup 2}).

  7. 溶剂对无机-有机鞣革耐湿热稳定性的影响%Influence of Solvents on Hydrothermal Stability of Organic-inorganic Tanning Leathers

    Institute of Scientific and Technical Information of China (English)

    杨永伟; 李建波; 单志华

    2013-01-01

    With chromium,aluminum,ferrum and quebracho extract, the pickled hides were tanned individually or combina-tionally. Then the crust leather was chemically treated with some kinds of solvents, such as distilled water,urea, sodium dodecyl sulfate, glycerol,rapeseed oil,engine oil and so on. The variation of leather's hydrothermal stability(Ts) was measured one by one in order to find out the influence of solvents and reasons of fading on tanned leather. The result shows that glycerol has the most seriously effect to Ts with a decreasing amplitude of 15. 58℃;the leather tanned by aluminum and ferrum has a poor resistibility to water and engine oil; urea solution with concentration of 0. 5mol/L and rapeseed oil can make a great impact to ferrum tanned leather. All combination tanned leather has a inferior resist to washings of water and glycerol, the Ts decreases 4. 82℃ on average. After treatment with engine oil, the hydrothermal stability of combination tanned leather declines more than, compared with rapeseed oil. Urea solution can make a little contribution to hydrothermal stability of leather tanned by quebracho extract and chromium , whereas the vegetable - ferrum leather doesn' t suitable for this point and △ T is - 6. 5℃. The combination tannage leather has a better resistivity to solvent than solo mineral - tanned leather.%以铬、铝、铁、坚木为鞣剂对浸酸牛皮进行无机及有机-无机结合鞣,并使用蒸馏水、脲、十二烷基硫酸钠、甘油、菜油、机油等溶剂,分别对坯革进行处理,通过测定皮革收缩温度(Ts)的变化,据此探讨无机溶剂、有机溶剂、表面活性剂对皮革耐湿热稳定性的影响及皮革退鞣的相关原理.研究结果表明:甘油对无机鞣革的耐湿热稳定性影响最大,可使Ts下降15.58℃;铝鞣革、铁鞣革不耐水和机油的浸泡;0.5mol/L的脲溶液和菜油对铁鞣革有很强的退鞣作用;结合鞣革均不耐

  8. Al-‘Alāqah bayn al-Dīn wa al-Dawlah bi Indūnīsiyā: Tan Malaka wa Ārā’uhu al-Siyāsīyah

    Directory of Open Access Journals (Sweden)

    Khairil Azhar

    2014-03-01

    Full Text Available The present article is about the relation between religion and state as it is discussed by a prominent figure whose contributions to Indonesian politic are out of question. He is Tan Malaka, who has been considered as a radical Marxist activist. Through his works, including Madilog: Materialisme, Dialektika, Logika; Islam dalam Tinjauan Madilog Dari Penjara ke Penjara; Naar De Republiek Indonesie; Tan Malaka shows his deep appreciation to Marxism. That is why, in these works, be pays a great attention to liberation movement and freedom for people both from colonial domination and from feudalism rooted in Indonesian culture.Copyright (c 2014 by SDI. All right reserved.DOI: 10.15408/sdi.v7i2.711

  9. The non-peptidic delta opioid receptor agonist TAN-67 enhances dopamine efflux in the nucleus accumbens of freely moving rats via a mechanism that involves both glutamate and free radicals.

    NARCIS (Netherlands)

    Fusa, K.; Takahashi, I.; Watanabe, S.; Aono, Y.; Ikeda, H.; Saigusa, T.; Nagase, H.; Suzuki, T.; Koshikawa, N.; Cools, A.R.

    2005-01-01

    The activation of the delta-opioid receptors in the nucleus accumbens is known to induce a large and rapid increase of accumbal dopamine efflux. (+/-)-TAN-67 (2-methyl-4a(alpha)-(3-hydroxyphenyl)-1,2,3,4,4a,5,12,12a(alpha)-octahydro -quinolino[2,3,3,-g]isoquinoline) is a centrally acting non-peptidi

  10. Determination Condition Optimization of Vegetable Tanning Agents Concentrations by Folin- Ciocalteu Colorimetry%Folin—Ciocalteu比色法测定植物鞣剂浓度条件的优化

    Institute of Scientific and Technical Information of China (English)

    陈玉峰; 李彦春

    2012-01-01

    通过正交试验对福林酚比色法测定植物鞣剂的条件进行了优化,结果表明:测定最佳条件为福林酚试剂浓度为1:1.碳酸钠的质量分数7.5%,50℃下反应30min,经分析,该法的稳定性、重现性好,精密度高。在最佳反应条件下所得数据的线性拟合结果表明,4种植物鞣剂的标准曲线线性关系良好,因此,可以利用福林酚比色法测定植物鞣剂的浓度。%By optimizing the conditions of Folin - Ciocalteu colorimetry via orthogonal test, a study on determining the concentration of vegetable tanning agents was conducted. The results show that the best conditions is as follows : Folin - Ciocaheu concentration is 1: 1, mass fraction of sodium carbonate is 7.5%, reaction temperature is 50℃ and reaction time is 30rain. Folin - Ciocalteu colorimetry is convenient, rapid, accurate and reliable for the suhs of linear fitting of data under the optimum condition show ar relationship. So Folin -Ciocalteu colorimetry could be used determination of the concentration of vegetable tanning agents. The rethat the standard curve of four to determine the concentration vegetable tanning agents has good lineof vegetable tanning agents.

  11. Girişimciler Açısından Televizyon Reklamlarının Marka Tanınırlığına Etkisi

    OpenAIRE

    Sarıyer, Nilsun

    2009-01-01

    Marka tanınırlıgı, tüketicinin ürünle ilgili dogrudan ya da dolaylı olarak maruz kaldıgı tecrübeleri içerir. Bu çalısmada, televizyon reklâmlarının marka tanınırlıgına etkisi arastırılmıstır. Arastırma, Çanakkale merkezinde yasayan 376 tüketici üzerinde yapılmıstır. Televizyon reklâmları ile marka tanınırlıgı arasında nispeten güçlü bir iliski oldugu ki-kare analizi kullanılarak tespit edilmistir. Tüketicilerin televizyon reklâmlarından beklentileri ise faktör analizi yardımıyl...

  12. Tungo sa Hardin ng Tao: “Si Bonifacio ang pinakauna, hindi lamang sa Pilipinas, kundi sa buong Indonesia, oo, sa buong Asia na nanggaling sa, at edukado bilang, proletaryado, na nag-organisa ng mga proletaryo.” ni Tan Malaka

    Directory of Open Access Journals (Sweden)

    Ramon Guillermo

    2013-06-01

    Full Text Available Salin ito ng sanaysay na “Ke Taman Manusia” (sinulat taong 1943 nakathang-isip ng Indones na lider komunista na si Tan Malaka o Ibrahimgelar Datuk Tan Malaka (1897-1949 hinggil sa isang “Taman Manusia”o “Hardin ng Tao” na itatayo ng darating na Republika ng Indonesia sahinaharap. Dahil sa futuristiko nitong perspektiba, maihahalintuladang obrang ito ni Tan Malaka sa sanaysay ni Jose Rizal na “Filipinasdentro de cien años” (Ang Pilipinas sa loob ng isang dantaon (1891.Galing ito sa napakalaking akdang pilosopikal ni Tan Malaka napinamagatang Madilog: Materialisme, Dialektika, Logika (1948(Larawan 1 at tila tumatayo bilang pansarang mga repleksyon nito(Magnis-Suseno, 2005, pp. 205-233. Ang akdang ito ay unanginilathala noong 1951 ng Terbitan Widjaya sa Jakarta.

  13. Time-averaged discharge rate of subaerial lava at Kīlauea Volcano, Hawai‘i, measured from TanDEM-X interferometry: Implications for magma supply and storage during 2011-2013

    Science.gov (United States)

    Poland, Michael P.

    2014-01-01

    Differencing digital elevation models (DEMs) derived from TerraSAR add-on for Digital Elevation Measurements (TanDEM-X) synthetic aperture radar imagery provides a measurement of elevation change over time. On the East Rift Zone (EZR) of Kīlauea Volcano, Hawai‘i, the effusion of lava causes changes in topography. When these elevation changes are summed over the area of an active lava flow, it is possible to quantify the volume of lava emplaced at the surface during the time spanned by the TanDEM-X data—a parameter that can be difficult to measure across the entirety of an ~100 km2 lava flow field using ground-based techniques or optical remote sensing data. Based on the differences between multiple TanDEM-X-derived DEMs collected days to weeks apart, the mean dense-rock equivalent time-averaged discharge rate of lava at Kīlauea between mid-2011 and mid-2013 was approximately 2 m3/s, which is about half the long-term average rate over the course of Kīlauea's 1983–present ERZ eruption. This result implies that there was an increase in the proportion of lava stored versus erupted, a decrease in the rate of magma supply to the volcano, or some combination of both during this time period. In addition to constraining the time-averaged discharge rate of lava and the rates of magma supply and storage, topographic change maps derived from space-based TanDEM-X data provide insights into the four-dimensional evolution of Kīlauea's ERZ lava flow field. TanDEM-X data are a valuable complement to other space-, air-, and ground-based observations of eruptive activity at Kīlauea and offer great promise at locations around the world for aiding with monitoring not just volcanic eruptions but any hazardous activity that results in surface change, including landslides, floods, earthquakes, and other natural and anthropogenic processes.

  14. Correlation between bulk- and surface chemistry of Cr-tanned leather and the release of Cr(III) and Cr(VI)

    Energy Technology Data Exchange (ETDEWEB)

    Hedberg, Yolanda S., E-mail: yolanda@kth.se [KTH Royal Institute of Technology, School of Chemical Science and Engineering, Department of Chemistry, Division of Surface and Corrosion Science, SE-10044 Stockholm (Sweden); Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-17177 Stockholm (Sweden); Lidén, Carola, E-mail: carola.liden@ki.se [Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-17177 Stockholm (Sweden); Odnevall Wallinder, Inger, E-mail: ingero@kth.se [KTH Royal Institute of Technology, School of Chemical Science and Engineering, Department of Chemistry, Division of Surface and Corrosion Science, SE-10044 Stockholm (Sweden)

    2014-09-15

    Graphical abstract: - Highlights: • Released reducing/complexing leather-specific species can reduce released Cr(VI). • No co-released species enable the formation of Cr(VI) in solution. • The major Cr species released from leather in phosphate buffer was Cr(III) (>82%). • No Cr(VI) was released into artificial sweat. - Abstract: About 1–3% of the adult general population in Europe is allergic to chromium (Cr). The assessment of the potential release of Cr(III) and Cr(VI) from leather is hence important from a human health and environmental risk perspective. The Cr(VI) content in leather was recently restricted in the European Union. The aim of this study was to assess possible correlations between the bulk and surface chemistry of leather, released Cr(III) and Cr(VI), and capacities of co-released leather specific species to reduce and complex released Cr. Four differently tanned leathers were characterized by scanning electron microscopy with energy dispersive spectroscopy, X-ray photoelectron spectroscopy, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and the diphenylcarbazide colorimetric method. Their characteristics were compared with results on Cr(III) and Cr(VI) release into artificial sweat (ASW, pH < 6.5) and phosphate buffer (PB, pH 7.5–8.0), measured by means of spectrophotometry and atomic absorption spectroscopy. Co-released leather-specific species were shown to reduce Cr(VI), both in ASW and in PB. Their reduction capacities correlated with findings of the surface content of Cr and of released Cr. Leather samples without this capacity, and with less aromatic surface groups visible by ATR-FTIR, revealed Cr(VI) both at the surface and in solution (PB)

  15. Deletion of C7L and K1L genes leads to significantly decreased virulence of recombinant vaccinia virus TianTan.

    Directory of Open Access Journals (Sweden)

    Zheng Liu

    Full Text Available The vaccinia virus TianTan (VTT has been modified as an HIV vaccine vector in China and has shown excellent performance in immunogenicity and safety. However, its adverse effects in immunosuppressed individuals warrant the search for a safer vector in the following clinic trails. In this study, we deleted the C7L and K1L genes of VTT and constructed six recombinant vaccinia strains VTT△C7L, VTT△K1L, VTT△C7LK1L, VTKgpe△C7L, VTKgpe△K1L and VTT△C7LK1L-gag. The pathogenicity and immunogenicity of these recombinants were evaluated in mouse and rabbit models. Comparing to parental VTT, VTT△C7L and VTT△K1L showed significantly decreased replication capability in CEF, Vero, BHK-21 and HeLa cell lines. In particular, replication of VTT△C7LK1L decreased more than 10-fold in all four cell lines. The virulence of all these mutants were decreased in BALB/c mouse and rabbit models; VTT△C7LK1L once again showed the greatest attenuation, having resulted in no evident damage in mice and erythema of only 0.4 cm diameter in rabbits, compared to 1.48 cm for VTT. VTKgpe△C7L, VTKgpe△K1L and VTT△C7LK1L-gag elicited as strong cellular and humoral responses against HIV genes as did VTKgpe, while humoral immune response against the vaccinia itself was reduced by 4-8-fold. These data show that deletion of C7L and K1L genes leads to significantly decreased virulence without compromising animal host immunogenicity, and may thus be key to creating a more safe and effective HIV vaccine vector.

  16. Early embryo achievement through isolated microspore culture in Citrus clementina Hort. ex Tan., cvs. ‘Monreal Rosso’ and ‘Nules’

    Directory of Open Access Journals (Sweden)

    Benedetta eChiancone

    2015-06-01

    Full Text Available Microspore embryogenesis is a method of achieving complete homozygosity from plants. It is particularly useful for woody species, like Citrus, characterized by long juvenility, a high degree of heterozygosity and often self-incompatibility. Anther culture is currently the method of choice for microspore embryogenesis in many crops. However, isolated microspore culture is a better way to investigate the processes at the cellular, physiological, biochemical and molecular levels as it avoids the influence of somatic anther tissue. To exploit the potential of this technique, it is important to separate the key factors affecting the process and, among them, culture medium composition and particularly the plant growth regulators and their concentration, as they can greatly enhance regeneration efficiency. To our knowledge, the ability of meta-Topolin, a naturally occurring aromatic cytokinin, to induce gametic embryogenesis in isolated microspores of Citrus has never been investigated. In this study, the effect of two concentrations of meta-Topolin instead of benzyladenine or zeatin in the culture medium was investigated in isolated microspore culture of two genotypes of Citrus. After eleven months of isolated microspore culture, for both genotypes and for all the four tested media, the microspore reprogramming and their sporophytic development was observed by the presence of multinucleated calli and microspore-derived embryos at different stages. Microsatellite analysis of parental and embryo samples was performed to determine the embryo alleles constitution of early embryos produced in all tested media, confirming their origin from microspores.To our knowledge, this is the first successful report of Citrus microspore embryogenesis with isolated microspore culture in Citrus, and in particular in Citrus clementina Hort. ex Tan, cvs. ‘Monreal Rosso’ and ‘Nules’.

  17. Sub-Acute Toxicity Study of Tiger Milk Mushroom Lignosus tigris Chon S. Tan Cultivar E Sclerotium in Sprague Dawley Rats.

    Science.gov (United States)

    Kong, Boon-Hong; Tan, Nget-Hong; Fung, Shin-Yee; Pailoor, Jayalakshmi

    2016-01-01

    Lignosus also known as "Tiger Milk Mushroom," is classified in the family Polyporaceae and mainly consumed for its medicinal properties in Southeast Asia and China. The sclerotium is known as the part with medicinal value and often used by the natives to treat a variety of ailments. Lignosus tigris Chon S. Tan, one of the species of the Malaysia Tiger Milk mushroom, has recently been successfully cultivated in laboratory. Earlier studies have demonstrated the L. tigris cultivar E sclerotia exhibited beneficial biomedicinal properties. This study evaluated the potential toxicity of L. tigris E sclerotia in a 28-day sub-acute oral administration in Sprague Dawley (SD) rats. L. tigris E sclerotial powder was administered orally at three different doses of 250, 500, and 1000 mg/kg to the SD rats once daily, consecutively for 28-days. Body weight of the rats was recorded and general behavior, adverse effects, and mortality were observed daily throughout the experimental period. At the end of the experiment, blood hematology and biochemistry, relative organ weights, and histopathological analysis were performed. Results showed that there were no mortality nor signs of toxicity throughout the 28-day sub-acute toxicity study. Oral administration of the L. tigris E sclerotial powder at daily dose up to 1000 mg/kg had no significant effects in body weight, relative organ weight, blood hematological and biochemistry, gross pathology, and histopathology of the organs. L. tigris E sclerotial powder did not cause any treatment-related adverse effect in the rats at different treatment dosages up to 1000 mg/kg. As the lethal dose for the rats is above 1000 mg/kg, the no-observed-adverse-effect level (NOAEL) dose is more than 1000 mg/kg. PMID:27555822

  18. Estimating Digital Terrain Model in forest areas from TanDEM-X and Stereo-photogrammetric technique by means of Random Volume over Ground model

    Science.gov (United States)

    Lee, S. K.; Fatoyinbo, T. E.; Lagomasino, D.; Osmanoglu, B.; Feliciano, E. A.

    2015-12-01

    The Digital Terrain Model (DTM) in forest areas is invaluable information for various environmental, hydrological and ecological studies, for example, watershed delineation, vegetation canopy height, water dynamic modeling, forest biomass and carbon estimations. There are few solutions to extract bare-earth Digital Elevation Model information. Airborne lidar systems are widely and successfully used for estimating bare-earth DEMs with centimeter-order accuracy and high spatial resolution. However, expensive cost of operation and small image coverage prevent the use of airborne lidar sensors for large- or global-scale. Although IceSAT/GLAS (Ice, Cloud, and Land Elevation Satellite/Geoscience Laser Altimeter System) lidar data sets have been available for global DTM estimate with relatively lower cost, the large footprint size of 70 m and the interval of 172 m are insufficient for various applications. In this study we propose to extract higher resolution bare-earth DEM over vegetated areas from the combination of interferometric complex coherence from single-pass TanDEM-X (TDX) data at HH polarization and Digital Surface Model (DSM) derived from high-resolution WorldView (WV) images by means of random volume over ground (RVoG) model. The RVoG model is a widely and successfully used model for polarimetric SAR interferometry (Pol-InSAR) forest canopy height inversion. The bare-earth DEM is obtained by complex volume decorrelation in the RVoG model with the DSM estimated by stereo-photogrammetric technique. Forest canopy height can be estimated by subtracting the estimated bare-earth model from the DSM. Finally, the DTM from airborne lidar system was used to validate the bare-earth DEM and forest canopy height estimates.

  19. Correlation between bulk- and surface chemistry of Cr-tanned leather and the release of Cr(III) and Cr(VI)

    International Nuclear Information System (INIS)

    Graphical abstract: - Highlights: • Released reducing/complexing leather-specific species can reduce released Cr(VI). • No co-released species enable the formation of Cr(VI) in solution. • The major Cr species released from leather in phosphate buffer was Cr(III) (>82%). • No Cr(VI) was released into artificial sweat. - Abstract: About 1–3% of the adult general population in Europe is allergic to chromium (Cr). The assessment of the potential release of Cr(III) and Cr(VI) from leather is hence important from a human health and environmental risk perspective. The Cr(VI) content in leather was recently restricted in the European Union. The aim of this study was to assess possible correlations between the bulk and surface chemistry of leather, released Cr(III) and Cr(VI), and capacities of co-released leather specific species to reduce and complex released Cr. Four differently tanned leathers were characterized by scanning electron microscopy with energy dispersive spectroscopy, X-ray photoelectron spectroscopy, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and the diphenylcarbazide colorimetric method. Their characteristics were compared with results on Cr(III) and Cr(VI) release into artificial sweat (ASW, pH < 6.5) and phosphate buffer (PB, pH 7.5–8.0), measured by means of spectrophotometry and atomic absorption spectroscopy. Co-released leather-specific species were shown to reduce Cr(VI), both in ASW and in PB. Their reduction capacities correlated with findings of the surface content of Cr and of released Cr. Leather samples without this capacity, and with less aromatic surface groups visible by ATR-FTIR, revealed Cr(VI) both at the surface and in solution (PB)

  20. Sub-Acute Toxicity Study of Tiger Milk Mushroom Lignosus tigris Chon S. Tan Cultivar E Sclerotium in Sprague Dawley Rats

    Science.gov (United States)

    Kong, Boon-Hong; Tan, Nget-Hong; Fung, Shin-Yee; Pailoor, Jayalakshmi

    2016-01-01

    Lignosus also known as “Tiger Milk Mushroom,” is classified in the family Polyporaceae and mainly consumed for its medicinal properties in Southeast Asia and China. The sclerotium is known as the part with medicinal value and often used by the natives to treat a variety of ailments. Lignosus tigris Chon S. Tan, one of the species of the Malaysia Tiger Milk mushroom, has recently been successfully cultivated in laboratory. Earlier studies have demonstrated the L. tigris cultivar E sclerotia exhibited beneficial biomedicinal properties. This study evaluated the potential toxicity of L. tigris E sclerotia in a 28-day sub-acute oral administration in Sprague Dawley (SD) rats. L. tigris E sclerotial powder was administered orally at three different doses of 250, 500, and 1000 mg/kg to the SD rats once daily, consecutively for 28-days. Body weight of the rats was recorded and general behavior, adverse effects, and mortality were observed daily throughout the experimental period. At the end of the experiment, blood hematology and biochemistry, relative organ weights, and histopathological analysis were performed. Results showed that there were no mortality nor signs of toxicity throughout the 28-day sub-acute toxicity study. Oral administration of the L. tigris E sclerotial powder at daily dose up to 1000 mg/kg had no significant effects in body weight, relative organ weight, blood hematological and biochemistry, gross pathology, and histopathology of the organs. L. tigris E sclerotial powder did not cause any treatment-related adverse effect in the rats at different treatment dosages up to 1000 mg/kg. As the lethal dose for the rats is above 1000 mg/kg, the no-observed-adverse-effect level (NOAEL) dose is more than 1000 mg/kg. PMID:27555822

  1. Transcriptome analysis of the Tan sheep testes: Differential expression of antioxidant enzyme-related genes and proteins in response to dietary vitamin E supplementation.

    Science.gov (United States)

    Xu, Chenchen; Zuo, Zhaoyun; Liu, Kun; Jia, Huina; Zhang, Yuwei; Luo, Hailing

    2016-03-15

    Gene-chip technology was employed to study the effect of dietary vitamin E on gene expression in sheep testes based on our previous research. Thirty-five male Tan sheep (20-30 days after weaning) with similar body weight were randomly allocated into five groups and supplemented 0, 20, 100, 200 and 2,000 IU sheep(-1)day(-1) vitamin E (treatments denoted as E0, E20, E100, E200, and E2000, respectively) for 120 days. At the end of the study the sheep were slaughtered and the testis samples were immediately collected and stored in liquid nitrogen. Differences in gene expression between different treated groups were identified. Based on GO enrichment analysis and the KEGG database to evaluate the gene expression data we found that vitamin E might affect genes in the testes by modulating the oxidation level, by affecting the expression of various receptors and transcription factors in biological pathways, and by regulating the expression of metabolism-associated genes. The effect of vitamin E supplementation on the expression of oxidative enzyme-related genes was detected by quantitative real-time PCR (qRT-PCR) and Western blot. The results show that dietary vitamin E, at various doses, can significantly increase (P<0.05) the mRNA and protein expression of Glutathione peroxidase 3 and Glutathione S-transferase alpha 1. In addition, the results of qRT-PCR of the antioxidant enzyme genes were consistent with those obtained using the gene chip microarray analysis. In summary, the dietary vitamin E treatment altered the expression of a number of genes in sheep testes. The increase in the mRNA and protein levels of antioxidant enzyme genes, coupled with the elevation in the activity of the antioxidant enzymes were primarily responsible for the improved reproductive performance promoted by dietary vitamin E. PMID:26723511

  2. Raíces griegas: tan lejanas y tan cercanas

    Directory of Open Access Journals (Sweden)

    Ana María Gispert-Sauch Colls

    2011-05-01

    Full Text Available Isidoro de Sevilla en su obra maestra Etimologías, supo unir el “origen”, o sea, de dónde viene un vocablo y la “etimología”, que sería el “por qué” se aplica este vocablo a una realidad concreta. Hizo, pues, una distinción entre etimologías ex causa (según lo que es y etimologías ex origine (según de dónde viene. Y, como de lo que se trataba era decaptar el valor esencial de una palabra, dice Isidoro, “cuando se ha visto de dónde viene un nombre, se comprende más rápidamente su valor, porque el estudio de las realidades es más fácil una vez conocida la etimología” (Etimologías, I, 19, 2. Siguiendo en parte esta orientación, presentamos algunas raíces de verbos griegos, lejanos en referencia al tiempo de su origen, pero presentes en nuestro tiempo a través de sus derivaciones. Y, sobre todo persistentes, porque nos transmiten la esencia de significado, ladensidad semántica, a la que he aludido en varias ocasiones1.De esta forma, el hoy de muchas de nuestras palabras está impregnado de este pasado clásico que nos invita a recuperar permanentemente su esencia. No en vano y refiriéndonos a Sócrates, podríamos decir que la etimología tiene una función “mayéutica”, la de sacar a la luz el núcleofecundo de las palabras. Veamos algunas de dichas raíces.

  3. Euroopa - 27 ja EUR - 13 / Lembo Tanning, Toivo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2007-01-01

    Ilmunud ka: Buhgalterskije Novosti, nr. 2, 2007, lk. 35-38. 2007. aastal Euroopa Liiduga liitunud Bulgaaria ja Rumeenia ning eurotsooniga liitunud Sloveenia võrdlev analüüs Eurostati andmete põhjal. Kaart, tabelid, diagramm

  4. Maailma välisinvesteeringud / Lembo Tanning, Toivo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2006-01-01

    Ilmunud ka: Buhgalterskije Novosti 2007, nr. 1 lk. 35-39. Ülevaade rahvusvahelise kapitali liikumisest. Tabelid: Välisotseinvesteeringute voolud, mld USD, 2003-2005; Välisotseinvesteeringute positsioon, mld USD, 2003-2005. Graafik: Otsevälisinvesteeringute sissevool maailmas ja regioonides, mld USD, 1980-2005

  5. Desobediencia civil/Disobbedienza civile : (Italia: tan lejos, tan cerca)

    OpenAIRE

    Olmo Bau, Carlos S.

    2006-01-01

    Las páginas que siguen escogen una práctica ciudadana y un concepto ya clásico en la filosofía política, la filosofía moral o la filosofía del derecho —la Desobediencia Civil— para realizar una mirada (por fuerza general) a la reflexión filosófica italiana al respecto y su repercusión en el ámbito hispano. Y lo hacen sin olvidar que el diálogo entre la producción académica de uno y otro Estado no siempre ha sido lo fluido que podría haberse deseado y si...

  6. Põhjamaade maksebilansi jooksevkonto / Lembo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    1999-01-01

    Teenuste, tulude ja ülekannete järjest suurenev deebet, mis on iseloomulik kõigile Põhjamaade riikidele, näitab rahva heaolu jätkuvat kasvu, vaeste arengumaade abistamist, osavõttu rahvusvahelistest programmidest. Põhjamaade riikide maksebilansid IMF-i materjalide põhjal. Jooksevkontod

  7. Euroopa Liidu palkadest / Lembo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2001-01-01

    Euroopa Liidu elustandardi analüüs palkade põhjal. Tabelid: EL-i maade keskmine tunnipalk majandusharude järgi eurodes; EL-i madalapalgaliste üldine tase ja nende liigitus põhjuste järgi %-des; EL-i madalapalgaliste osakaalu jagunemine ja selle tõenäosus; Saksamaa Liitvabariigi palgad 1996-2000

  8. Euroopa panganduse arengusuunad / Lembo Tanning

    Index Scriptorium Estoniae

    Tanning, Lembo

    2000-01-01

    Euroopa Liidu liikmesriikides on pankade arv ajavahemikus 1994-1997 10% võrra vähenenud, kuid samaaegselt on krediidiinstitutsioonide kohalike allüksuste arv 8% võrra kasvanud ja teenistujate arv suhteliselt muutumatuks jäänud. Tabel: Ülevaade Euroopa Majandusruumi finantsinstitutsioonide arvust, filiaalidest ja töötajatest

  9. Preference Differentiation of ChangZhuTan Urban Rresidents Forest Health Tourism Based on Lifestyle: A Case of ChangZhuTan City%基于生活形态的城市居民森林保健旅游偏好分异研究 ——以长株潭地区为例

    Institute of Scientific and Technical Information of China (English)

    郑群明; 唐绒; 陈青山

    2015-01-01

    森林保健旅游已经成为健康旅游的一大热点.在森林保健旅游的研究中,旅游偏好研究的成果较少.通过引入生活形态的概念,对长株潭地区的城市居民加以细分,来研究生活形态迥异的城市居民在森林保健旅游领域的旅游偏好.研究发现,长株潭地区的城市居民可细分为保守稳重型、消极随意型和积极进取型三个不同生活形态的族群;进一步研究发现,不同生活形态的族群在人口学特征、森林保健旅游项目、信息渠道、出行时段、出游方式、入住方式以及消费意向等森林保健旅游偏好方面存在差异.基于研究结论从产品开发和市场营销角度提出相关建议.%Forest health tourism has become a hot spot for health tourism.In the study of forest health tourism,pref-erence research has few outcome.This paper introduces the concept of lifestyle,to distinguish urban residents in Chang-ZhuTan areas and study the travel preferences about different forms of urban residents.It finds that,ChangZhuTan Ur-ban Residents can be ,this paper sdivided into conservative type,passive type and aggressive type.Further research finds differences among the three different lifestyle groups in demographic characteristics and forest health tourism projects,information channels,travel time,travel mode,dormitory-style and consume intention.Finally,some related suggestions for product development and marketing are proposed based on the research findings.

  10. Two families with quadrupedalism, mental retardation, no speech, and infantile hypotonia (Uner Tan Syndrome Type-II); a novel theory for the evolutionary emergence of human bipedalism.

    Science.gov (United States)

    Tan, Uner

    2014-01-01

    Two consanguineous families with Uner Tan Syndrome (UTS) were analyzed in relation to self-organizing processes in complex systems, and the evolutionary emergence of human bipedalism. The cases had the key symptoms of previously reported cases of UTS, such as quadrupedalism, mental retardation, and dysarthric or no speech, but the new cases also exhibited infantile hypotonia and are designated UTS Type-II. There were 10 siblings in Branch I and 12 siblings in Branch II. Of these, there were seven cases exhibiting habitual quadrupedal locomotion (QL): four deceased and three living. The infantile hypotonia in the surviving cases gradually disappeared over a period of years, so that they could sit by about 10 years, crawl on hands and knees by about 12 years. They began walking on all fours around 14 years, habitually using QL. Neurological examinations showed normal tonus in their arms and legs, no Babinski sign, brisk tendon reflexes especially in the legs, and mild tremor. The patients could not walk in a straight line, but (except in one case) could stand up and maintain upright posture with truncal ataxia. Cerebello-vermial hypoplasia and mild gyral simplification were noted in their MRIs. The results of the genetic analysis were inconclusive: no genetic code could be identified as the triggering factor for the syndrome in these families. Instead, the extremely low socio-economic status of the patients was thought to play a role in the emergence of UTS, possibly by epigenetically changing the brain structure and function, with a consequent selection of ancestral neural networks for QL during locomotor development. It was suggested that UTS may be regarded as one of the unpredictable outcomes of self-organization within a complex system. It was also noted that the prominent feature of this syndrome, the diagonal-sequence habitual QL, generated an interference between ipsilateral hands and feet, as in non-human primates. It was suggested that this may have been

  11. 栲胶-噁唑烷SCU结合鞣成革中甲醛含量及其去除方法%Formaldehyde Content and it's Removal in Leather Tanned by Vegetable Tannin-oxazolidine SCU Combination Tannage

    Institute of Scientific and Technical Information of China (English)

    孙青永; 李靖; 廖学品; 石碧

    2011-01-01

    Tanned by tannin -oxazolidine SCU combination tannage, the leather has a high hydrothermal stability. But a significant contend of formaldehyde is determined in the leather. The effects of combination tanning conditions on shrinkage temperature and formaldehyde content in leather were investigated. It was found that the formaldehyde content increased with the increasing oxazolidine SCU dosage, while the other factors, such as pH and temperature of tanning, amost have no effects. The most of the formaldehyde in leather caused by the tannage can be removed by formaldehyde scavenger DTA988, and the formaldehyde content in leather was lower than 70 mg/kg when 4 % DT - A988 was used.%噁唑烷鞣剂SCU与栲胶结合鞣成革具有高湿热稳定性,但成革中存在一定含最的游离甲醛.本文研究了结合鞣工艺对成革收缩温度及甲醛含量的影响,结果表明,工艺条件基本不影响成革中的甲醛含量,甲醛含量只随着嗯唑烷SCU用量的增加而增加.该结合鞣法在皮革中产生的游离甲醛,可以用甲醛清除剂DT-A988进行较有效的清除,当DT-A988用量为4%时,成革中的甲醛含量低于70 mg/kg.

  12. 植物多酚与铬离子形成新型鞣剂的研究进展%Development of New Tanning Agent Made of Plant Polyphenols and Chrome Ions

    Institute of Scientific and Technical Information of China (English)

    潘红英; 王华; 陈武勇

    2009-01-01

    由于环保的要求,寻找一种替代纯铬鞣的新型鞣剂或鞣法显得极有必要,而植物鞣剂作为一种天然鞣剂能够满足要求.本文主要论述两种不同的方法使植鞣荆降解,然后进行植铬结合鞣.一种是植物鞣剂先酸化降解,因为酸化降解产物具有还原、蒙囿以及与金属离子络合的作用,与Cr(Ⅵ)发生氧化还原作用,形成新的铬鞣剂.另外一种是植物多酚被氧化降解改性,进行植铬结合鞣.通过这些方法既减少了铬的用量,又有较好的鞣革性能.%Due to the environmental requirements, searching for an alternative new tannage or method of tanning to the pure chrome is necessary. Vegetable tannin can meet the needs as a natural tannage. In this paper, primarily summarizes two different ways to modify vegetable tannin, then the modified products can be applied to the vegetable tannin-chrome combination tannage. Vegetable tannin is degraded by the acid. The degradation products have a better masking ability, and have good complex properties with the metal ions. Chromium (Ⅵ)can be reduced to produce chrome tanning agent by the product which can be obtained by hydrolyzing hydrolysable tannin . The plant polyphenols can be modified by the oxidization degradation. The oxidization degradation products can be applied to the vegetable tannin-chrome combination tannin. Using these methods can not only reduce the amount of chrome, but also have better tanned leather property.

  13. Insights on the 2010 Lava Flows of Piton de la Fournaise Using Cosmo-SkyMed and TanDEM-X Data: Lava Displacement Rates, Thicknesses, and Volume Estimates

    Science.gov (United States)

    Bato, M. G.; Froger, J. L.; Harris, A. J. L.; Villeneuve, N.

    2014-12-01

    Characterization of lava flow after its emplacement provides volume and constraints for lava flow emplacement simulations that help assess pending volcanic hazards. Additionally, it gives us better insights in understanding the dynamics of the underlying magmatic plumbing system and the possible mechanism of the eruption. In this work, we developed a technique using monostatic Cosmo-SkyMed and bistatic TanDEM-X data to calculate the volume, measure the thickness, and the horizontal and vertical displacements immediately after the emplacement of the October 2010 lava flow at Piton de la Fournaise. Results show that the thickest part of the October 2010 lava flow is about 13 to 16 m and the DRE volume is estimated to fall within the range of 1.71 to 3.00 x 106 m3 (±1σ), depending on which InSAR database was used. We also observe that the October 2010 lava flow is subsiding at a maximum rate of 14 cm yr-1. Apart from the vertical displacement, joint sliding and centripetal displacement were also identified with a maximum rate of 4.0 cm yr-1. We cross-validated our InSAR results with the mixed-pixel technique of Harris [1997] in terms of the estimated volumes. Our analysis shows that the volume derived using a few TanDEM-X interferograms fitted well within the range of volume given by the mixed-pixel technique as compared to the huge monostatic Cosmo-SkyMed database. In addition to the October 2010 lava flow, we also characterized the thin lava flow deposit of the December 2010 eruption, however using only bistatic TanDEM-X data. In this case of thin lava deposits, we expect that TanDEM-X are best to use in deriving the thickness and estimating the volume as these type of data are more sensitive to topographic change. Reference: Harris AJL, Blake S, Rothery DA, Stevens NF., 1997. A chronology of the 1991 to 1993 Mount Etna eruption using advanced very high resolution radiometer data: implications for real-time thermal volcano monitoring. Geophys. Res. Lett. 102:7985-8003.

  14. La resignificación queer de los espacios normativos en la obra de Eduardo Mendicutti: el caso de Yo no tengo la culpa de haber nacido tan sexy

    OpenAIRE

    Saxe, Facundo Nazareno

    2011-01-01

    En las narraciones de Eduardo Mendicutti, mediante la resignificación de ciertos espacios normativos, se genera una obra literaria en la que se proyectan y problematizan cuestiones socio-culturales relativas a la diversidad afectivo-sexual. De modo tal que la misma constituye un ejemplo literario de los desplazamientos de un modelo gay-lésbico a uno queer. En la resignificación de estos espacios normativos, como los presentes en Yo no tengo la culpa de haber nacido tan sexy (1997), Eduardo Me...

  15. 飞机草鞣质的亚硫酸化改性及其鞣性研究%Sulfitation of Eupatorium Odoratum L.Tannin and its Tanning Ability

    Institute of Scientific and Technical Information of China (English)

    车玮; 常杰鲜; 陈继平; 龚英

    2015-01-01

    菊科植物飞机草具有一定的鞣制性能,但仍存在着传统植物鞣剂增厚率太高、颜色深、收缩温度低等缺点。本文期望通过亚硫酸化改性克服上述不足。首先采用正交实验法对飞机草茎和叶提取物进行亚硫酸化改性,接着采用改性物处理酸裸皮,处理后的坯革颜色在浅黄棕到深黄棕范围变化,增厚率低于传统植鞣革,为5.0%~6.7%,收缩温度可提高37益。采用改性物与铝盐结合鞣制,坯革收缩温度可达90益,基本达到无铬鞣革的耐湿热稳定性要求。研究首次获得了飞机草亚硫酸化改性物部分理化性质及其鞣制性能,可为进一步开发这种新植物鞣剂提供一些参考。%The composites Eupatorium odoratum L. was introduced as a kind of tanning agent, however, it was of the typical disadvantages for vegetable tannins, such as over strong thickening, deep color and low shrinkage temperature. These shortages were expected to be avoided by sulfitation in this study. Firstly, the orthogonal experiments were designed to study the sulfitation, and then these products were used to treat pickled pigskins. As proved, the treated pigskins had a light color like yellowish-brown and 5.0%-6.7%thickening rate, which was lower than that of the traditional vegetable leather. More important was that the shrinkage temperature was elevated by 37℃. Subsequently, some modified products were exploited to treat pigskins in the presence of aluminum tanning agent, and the results showed that the shrinkage temperature was elevated up to 90 ℃, which could meet with the requirement of the chrome-free tanned leather. In a word, some physical-chemical properties were obtained for the sulfited products of Eupatorium odoratum L., which would provide some basis for developing the new vegetable tanning agent.

  16. Application of Chrome-free Inorganic-roganic Combination- tanning in Buffalo Hide Split Sofa Leather%05无机/有机无铬结合鞣法在水牛二层沙发革上的应用

    Institute of Scientific and Technical Information of China (English)

    何青; 王康建; 陈哲; 但年华; 但卫华

    2012-01-01

    采用DMT-ⅡB无铬多金属配合鞣剂分别对l#有机鞣剂和2#有机鞣荆所鞣得的水牛二层坯革进行复鞣,即进行无机,有机无铬结合鞣,并进行湿态染整操作。试验工艺获得的水牛二层沙发革检测后发现,DMT-ⅡB配合鞣剂复鞣1#有机鞣剂鞣坯革制得的革收缩温度达到89.1℃,复鞣2#有机鞣荆鞣坯革制得的革收缩温度达到86.3℃,再经过湿态整理和干整理后收缩温度分别达到92.5℃和86.4℃,革身丰满柔软,撕裂强度和抗张强度较好。综合比较分析表明,DMT-ⅡB配合鞣剂与1#有机鞣剂结合鞣制得的成革综合性能较优。%The DMT-ⅡB chrome-free polymetallic tanning agent was applied in the buffalo hide split crust which was tanned by 1# organic tanning agent or 2# organic tanning agent. Post-tanning operations were also carried out. The properties of the buffalo hide split sofa leather after these processes were tested.The results showed that the shrinkage temperature of the leather followed by DMT-ⅡB retanning after 1#organic tanning was 89.1 ℃, while the other was 86.3℃. The shrinkage temperatures of the two kinds of leather can reach 92.5 ℃ and 86.4 ℃ after wet and dry finishing, respectively. The resultant leathers are full and soft, and have better tearing resistance and tensile resistance. Comprehensive°properties of leather that was combination-tanned using DMT-ⅡB tanning agent and 1# organic tanning agent were superior to that of the other.

  17. 长株潭地区土地可持续利用综合评价及空间分区%Comprehensive evaluation and spatial partition of sustainable utilization of land in Chang-Zhu-Tan region

    Institute of Scientific and Technical Information of China (English)

    刘庆; 陈利根

    2013-01-01

    Along with the sustainable development theory gradually extending to land fields, the concept of sustainable land use has already been widely accepted in the world, research on the sustainable land use also has received popular international academic attention and has become a hot spot in land science study. Sustainable land use, which is the premise and foundation of sustainable development of regional resources, the environment, the economy, and society, has been widely carried out. Shortage of lands is one of the principal obstacles to explore resource-conservation &environment-friendly development mechanisms in the Chang-Zhu-Tan region. It is important to solve the resource constraints problem of restricting economic and social development and to implement sustainable land use projects in order to comprehensively evaluate sustainable land-use level, deeply investigate the current space pattern situation, and provide a scientific basis for guiding land development and policymaking for land management. Taking the Chang-Zhu-Tan region as an example, from a resource-conservation&environment-friendly system point of view, selecting 22 indicators representing four aspects including (a) the economic benefit of land use, (b) intensive land uses, (c) the ecological environment of land use, and (d) social harmony of land use, the comprehensive scores of sustainable land use in the Chang-Zhu-Tan region were calculated by factor analysis and a comprehensive evaluation method in this paper. Combining clustering analysis, maps of comprehensive spatial partition patterns of sustainable land use were drawn by applying GIS. The specific research methods and steps are as follows: 1) On the basis of dimensionless processing to each index by a standardization method, the weights and scores of the principal component factors were calculated by using principal component analysis, and the comprehensive scores or evaluation values of sustainable land use were estimated by an index

  18. 长株潭地区耕地压力的时空变化及驱动因素分析%Spatial-temporal change and driving factors of cultivated land pressure in the Chang-Zhu-Tan area

    Institute of Scientific and Technical Information of China (English)

    刘胜峰; 张合平

    2015-01-01

    利用1997-2010年长株潭地区的土地利用现状数据和社会经济数据,运用耕地压力指数模型和主成分分析法分析了长株潭地区耕地压力的时空分布及驱动因素。结果表明:(1)长株潭地区耕地总量总体呈阶梯减少趋势;(2)整体看,长株潭地区耕地压力指数小于1,耕地压力不明显,但耕地压力指数呈上升-下降-上升走势,耕地压力呈上升势头。(3)具体看,长株潭地区耕地压力:长沙市>株洲市>湘潭市;并且县域空间差异明显,尤其是城区耕地压力指数远大于1,表明城区耕地压力非常大,其他县市压力相对较小。(4)人口快速增长、经济跨越式快速发展、农业机械化普及与农业投入的增加等4个方面是长株潭地区耕地压力变化的主要驱动因素。研究成果有利于提高人们对长株潭地区的耕地保护意识,为促进区域土地合理利用规划,实现两型发展提供科学依据。%Based on the survey data on land use and social-economic statistical data from 1 997 to 2010,this paper analyzes the spatial-temporal change and driving factors of cultivated land pressure in the Chang-Zhu-Tan area using the index model of cultivated land pressure and principal component analysis.The results show that the Chang-Zhu-Tan regional cultivated land tends to reduce overall in a step-like manner.As a whole,the cultivated land pressure index of the Chang-Zhu-Tan area is less than 1,implying the cultivated land pressure is not obvious.But the cultivated land pressure index exhibits an up-down-up process,with a rising tendency.Specifically,the cultivated land pressure of Changsha city is larger than Zhuzhou city,and that of Zhuzhou larger than Xiangtan city.And there are obvious differences among counties,especially in urban areas.The cultivated land pressure index of urban areas is much greater than 1,showing that the cul-tivated land pressure of urban areas is very big.Other counties have relatively

  19. Turizm pazarlamasında görsel ve yazılı tanıtım materyali içeriğinin satın alma niyetine etkileri: Eksik bilgiye dayalı çıkarım yaklaşımı

    OpenAIRE

    Bilim, Yasin

    2010-01-01

    Tanıtım ve pazarlama alanındaki çalışmalarda, reklamda verilen bilgilerin reklamı yapılan destinasyonu tam anlamıyla yansıtabildiğini varsayılmaktadır. Bununla birlikte, destinasyonlar nadiren tam bilgiyle tanıtılmakta ve bu yüzden tüketiciler genel olarak satın alma kararını sınırlı bilgiye dayandırarak vermektedirler. Eksik bilgi, 'karar vermek için gerekli olan ürün özelliklerinden bir ya da birkaçının olmaması' olarak tanımlanmaktadır. Bilginin eksikliği yaygın bir durumdur. Yapılan bir a...

  20. 12 Mart Romanlarında Kadın Tanımlamaları The Caharacterization Of Women In The March Twelfth Novels

    Directory of Open Access Journals (Sweden)

    Ahmet ALVER

    2012-12-01

    ında yaşananları ele alarak, 1980’e kadar olan zaman diliminde, aşırı sağ ve sol görüşlü aktivistlerin birbirleriyle ve devletin güvenlik güçleriyle olan kavgalarını ele alan, 1970’ler Türkiye’sinin bilinmeyen yanlarına edebi bir perspektiften bakıp kültürel hafızasını tutan, bu döneme etkili bir dille ayna tutmaya çalışan eserlere genel bir ifadeyle ‘12 Mart Romanları’ denmektedir. Kaos ve kargaşanın, aşırı şiddetin, devlet tarafından kendi halkına uygulanan baskının had safhada olduğu bir döneme ışık tutması sebebiyle bu romanlar, paha biçilmez değere sahip yazılı kaynaklardır.Bu çalışma özellikle, 12 Mart dönemi kadın yazarlarının kalemlerinden çıkan romanlarda ele aldıkları kadın tiplemelerini konu edinmiştir. Devrimci harekette yeralan kadınlara toplumun genel anlamda bakışını ve bu kadınların devrimci olmanın bedelini nasıl ödediklerini incelemiştir. Çalışmamızda devrimci kadınların yanısıra, maddi refahı ve zenginliği elde etme karşılığında toplumun ataerkil ve baskıcı yapısına boyun eğmeye razı olmuş ve mükemmel tüketiciler olarak tanımlanabilecek burjuva kadınları ile kendilerini sadece üreme malzemesi olarak kabul eden, vücutlarını erkekleri tatmin etmede araç olarak gören cahil kırsal kesim kadınları da incelenmiştir.Bu çalışmada Füruzan’ın 47’liler, Sevgi Soysal’ın Şafak, Adalet Ağaoğlu’nun Bir Düğün Gecesi ile Pınar Kür’ün Yarın Yarın romanları incelenmiştir.

  1. Avaliação da resistência da pele de tilápia do Nilo (Oreochrmis niloticus nos sentidos longitudinal, transversal e diagonal, depois de submetida ao curtimento com sais de cromo e recurtimento com agentes - DOI: 10.4025/actascianimsci.v28i3.54 Evaluation of resistance of the Nile tilapia (Oreochromis niloticus skin in longitudinal, transversal and diagonal position after tanning with chromium salts and retanning with different tanning substances - DOI: 10.4025/actascianimsci.v28i3.54

    Directory of Open Access Journals (Sweden)

    Karla Fabrícia de Oliveira

    2006-01-01

    Full Text Available O objetivo do trabalho foi avaliar a resistência da pele da Tilápia do Nilo (Oreochromis niloticus no sentido longitudinal, transversal e diagonal, depois de curtida com sais de cromo e recurtida por diferentes técnicas de recurtimento. As peles foram distribuídas em delineamento inteiramente casualizado, em fatorial 3x3, sendo 3 técnicas de recurtimento (T1 = com 4% de sais de cromo; T2 = 6% com taninos vegetais e T3 = com 6% de taninos sintéticos e 3 posições de retirada dos corpos-de-prova (P1 = longitudinal; P2 = transversal e P3 = diagonal, com 6 repetições por tratamento, em triplicata. O couro foi considerado a unidade experimental. Para os testes de determinação da resistência à tração, ao alongamento e ao rasgamento progressivo, foi utilizado o dinamômetro EMIC. A espessura dos couros variou de 1,00 a 1,20 mm, não diferindo entre as técnicas de recurtimento. Não houve diferença significativa para tração quanto às técnicas de recurtimento, porém, quanto à posição de retirada dos corpos-de-prova, foi significativamente maior para transversal (11,92 N/mm2. A técnica de recurtimento e a posição não influenciaram no rasgamento progressivo (variou de 24,47 a 29,12 N/mm. O couro na posição transversal apresentou maior alongamento independentemente da técnica aplicada, não diferindo apenas na técnica T2 para a posição longitudinal. A pele recurtida com sais de cromo e no sentido transversal apresentou maior resistência à tração e ao alongamento. O recurtimento e a posição não interferiram no rasgamento progressivo.The objective of this experiment was to evaluate the resistance of the Nile tilapia (Oreochromis niloticus skin in longitudinal, transversal and diagonal sections after tanning with chromium salts and re-tanning with different tanning substances. Skins were distributed in a totally randomized design, 3 by 3, with three re-tanning techniques (T1 = with 4% chromium salts; T2 = 6% vegetal

  2. İnsan Hakları Avrupa Sözleşmesi’nin 6. Maddesi Çerçevesinde Adil Yargılanma Hakkı Ve Sanığa Tanınan Temel Haklar

    OpenAIRE

    Sanıvar, Ramadan

    2012-01-01

    ÖZ: Adil Yargılanma Hakkı, İnsan Hakları Avrupa Sözleşmesi (İHAS) gibi birçok uluslararası metinde yer almakla birlikte, ulusal hukuk sistemlerinde de Anayasal düzeyde kabul edilmiş olan temel bir haktır. Bu tezin konusu “İHAS’ın 6. Md’si Çerçevesinde Adil Yargılanma Hakkı ve Sanığa Tanınan Temel Haklar”dır. Adil yargılanma hakkı, demokratik toplum düzeninin ve hukuk devletinin olmazsa olmaz unsurlarından birisidir. Bu nedenle, hem ceza yargılamalarına hem de medeni hukuk yargılamalarına uyg...

  3. 皮革加脂剂、染料、植物鞣剂的生物降解性研究进展%Research Progress on Biodegradation of Fatliquors,Dyestuffs and Vegetable Tanning Agents

    Institute of Scientific and Technical Information of China (English)

    王学川; 伏芋桥; 强涛涛

    2011-01-01

    The biodegradability of leather chemicals is great significance for leather industry to achieve "zero discharge". The biodegradability of leather chemicals was summarized in detail including fatliquors, dyestuffs and vegetable tanning agents, As for the development of leather chemicals, the suggestion was put forward in this paper, concerning the consideration about their function and biodegradation commencing on structure-activity relationship.%皮革化学品生物降解性对于皮革行业实现"零排放"具有重要意义.本文详细阐述了皮革加脂剂、染料、植物鞣剂的生物降解性研究进展.提出了皮革化学品的研发应从构效关系着手,兼顾其功能与生物降解性的建议.

  4. Algo sobre la autoestima. Qué es y cómo se expresa

    Directory of Open Access Journals (Sweden)

    María Teresa GONZÁLEZ MARTÍNEZ

    2009-11-01

    Full Text Available RESUMEN: La autoestima es uno de los conceptos psicológicos más complejos y uno de los más difíciles de precisar, a pesar de ser un factor que siempre ha estado presente en cualquier intento de explicación del comportamiento humano normal y patológico. Describir adecuadamente qué es la autoestima, requiere abordar previamente algunos aspectos que han influido en la falta de precisión de este concepto. En este sentido es necesario puntualizar que autoconcepto y autoestima no son términos intercambiables aunque ambos se impliquen, que la autoestima no es un factor unitario sino multidimensional, que la autoestima no sólo incluye los aspectos positivos y más valorables del sujeto, sino también aspectos menos valorables o las limitaciones y por último, que la autoestima no es autoafirmación incondicional ante los demás, sino autoafirmación respetando la individualidad de los otros. Se puede definir la autoestima como «la valoración positiva o negativa que el sujeto hace de su autoconcepto, valoración que se acompaña de sentimientos de valía personal y auto aceptación». La autoestima, así entendida, influye y se expresa a través del comportamiento del sujeto en todas sus dimensiones y manifestaciones, tales como autoaceptación, afrontamiento, aceptación de los demás e interacciones sociales, entre otras.ABSTRACT: Self-esteem is one of the most complex psychological concepts an one of the most difficult ones to define, despite the fact that it is a factor that has always been present in any attempt to explain the normal and pathological human behavior. In order to describe adequately what self-esteem is we need to first look at some of the aspects that have contributed to the lack of precision of this concept. We need to make clear that self-concept and self-esteem are not interchangeable terms even though they are both in some way related, that self-esteem not a unitary factor but multidimensional, that self-esteem not only includes the most positive and valued aspects and limitations of the individual but it also includes less valued aspects and limitations of the individual and that, finally, self-esteem is not an unconditional self-assertiveness in de eyes of others but self-assertiveness respecting the individuality of others. You can define sel-esteem like the «positive or negative valuation that the individual makes of this self-concept. Such valuation goes together with feelings of self-acceptance and value». Self-esteem understood as described above influences and is expresed through the behavior of the individual in all her dimensions and manifestations such as self-acceptance, acceptance of others and interactions with others.

  5. Más sobre Abalone y algo sobre tuercas: los tetrahexos

    OpenAIRE

    Rupérez, José Antonio; García, Manuel

    2012-01-01

    Comentamos los problemas planteados en anterior artículo sobre jugadas del ABALONE, describiéndolo de nuevo y presentamos el puzle de los Polihexos, fácil de construir y entretenido de resolver; útil para plantear ejercicios de combinatoria y simetrías.

  6. Algo básico sobre los instrumentos de medida: validez, fiabilidad, sensibilidad y especificidad.

    OpenAIRE

    Castro Bouzas, M

    2005-01-01

    Abstract:In this article basic topics about the main properties of measuring instruments are provided. In accordance with this objective, concepts on validity, accuracy, sensitiveness and specificity are explained and likewise, their relations with concrete examples on them are given. After defining these concepts, namely from a practical point of view, it is remarked the need of using only instruments fulfilling those required properties.Resumen:En este artículo se dan los conceptos básicos ...

  7. Algo sobre ideología roquera. Entrevista a Víctor Roura

    OpenAIRE

    Roura, Víctor; Córdova-Gozález, Bertha

    1989-01-01

    Entrevista al periodista Víctor Roura en donde se discute la música rock como producto y movimiento cultural en México, la incidencia que ha tenido en la juventud y en la sociedad, el significado que se le ha dado en el país y su ideología. Se habla también sobre las aportaciones del género a la cultura, el fenómeno del rock en otros países de habla hispana y se da una breve definición de este tipo de música. Incluye obra visual de Trino, reproducida en blanco y negro.

  8. Lenguas y especies, algo más que una analogía

    OpenAIRE

    San Segundo Cachero, Rosabel

    2010-01-01

    Darwin estableció una analogía entre el cambio lingüístico y la evolución de las especies en un intento de reforzar su teoría evolutiva; pero parece que existe una relación más profunda entre lenguas y especies que la que el propio Darwin sospechaba. Esta conexión puede explicarse aplicando un modelo evolutivo estructuralista y el concepto de exaptación, propuestos por Gould y Vrba (1982), de un modo más satisfactorio que si se emplea un modelo basado en un funcionalismo darwinist...

  9. Consecuencias del manejo de crisis internacionales: ¿Existe algo como una guerra inadvertida?

    OpenAIRE

    Alejandro L. Corbacho

    2005-01-01

    En la mayoría de las crisis internacionales los estados se encuentran en una situación de tensión que los puede llevar al enfrentamiento armado. Para resolverla sin recurrir a la fuerza las partes pueden intentar manejar la crisis. El manejo exitoso alejaría el peligro de la guerra y permitiría continuar la búsqueda de una solución conveniente para las partes. Sin embargo, los investigadores reconocen que no todas las crisis internacionales son igualmente manejables y que a veces puede llegar...

  10. Consecuencia del manejo de crisis internacionales: Existe algo como una guerra inadvertida?

    OpenAIRE

    Alejandro Corbacho

    2005-01-01

    En la mayoría de las crisis internacionales los estados se encuentran en una situación de tensión que los puede llevar al enfrentamiento armado. Para resolverla sin recurrir a la fuerza las partes pueden intentar "manejar la crisis". El manejo exitoso alejaría el peligro de la guerra y permitiría continuar la búsqueda de una solución conveniente para las partes. Sin embargo, los investigadores reconocen que no todas las crisis internacionales son igualmente manejables y que a veces puede lleg...

  11. ¿Significa algo la expresión "teoría del derecho"?

    OpenAIRE

    Muñoz-de-Baena-y-Simón, J.L. (José Luis)

    1995-01-01

    1. Si la "Teoría del Derecho" presenta un sentido convincente, éste debe acercarse 10 más' posible al de la "Filosofía del Derecho" (o, por evitar "adherencias", al de la Filoso/fa jurfdica), y no al de la Teoría General del Derecho, Teoría Fundamental del Derecho o Teoría del Derecho (en el sentido de Bobbio). 2. El cometido de la Teoría del Derecho, así concebida, es estructurar los tres grandes bloques del conocimiento metajurídico (Teoría de la estructura formal del D...

  12. Calidad de vida: algo más que un concepto.

    Directory of Open Access Journals (Sweden)

    Hilda Robaina Becerra

    2011-10-01

    Full Text Available El concepto de calidad de vida es controvertido y ambiguo; constituye para muchos profesionales de la salud un tema difícil de analizar ya que maneja escalas cualitativas. Su medición depende de diferentes variables que deben ser referidas por el propio paciente. Los logros de las políticas sociales aplicadas en Cuba dan respuesta con creces a todos y cada uno de los derechos a la calidad de la vida reconocidos en los instrumentos jurídicos de la Organización de las Naciones Unidas. La consulta especializada de planificación de la familia y riesgo reproductivo del Área III de Cienfuegos, constituyó una oportunidad para el desarrollo de la evaluación de la calidad de vida en las mujeres dispensarizadas como riesgo preconcepcional pertenecientes a dicha área de salud. Se realizó un estudio durante un año, se comparó el comportamiento de las diferentes escalas de la calidad de vida en las pacientes estudiadas al ingresar en los servicios especializados de planificación familiar y al año de la intervención, se apreció en la investigación que el índice total de la calidad de vida de las pacientes que conformaron el universo de estudio durante la primera consulta fue inferior al encontrado al año de la intervención en la consulta multidisciplinaria.

  13. Reformas agrarias en América Latina... y algo más

    OpenAIRE

    Segrelles Serrano, José Antonio

    2010-01-01

    Las cuestiones de la propiedad y el reparto de la tierra han aglutinado de forma tradicional a las poblaciones campesinas de Latinoamérica, motivando diversos movimientos reivindicativos y levantamientos populares de gran trascendencia pública en aras de una reforma agraria. Sin embargo, el uso y dedicación de la tierra apenas se ha planteado en términos sociopolíticos y ambientales, toda vez que la mayoría de los países latinoamericanos están experimentando una reorganización de sus territor...

  14. Vocabulario y comprensión lectora: algo más que causa y efecto

    OpenAIRE

    María José Godoy Merino; Juan Manuel Moreno Manso; Ángel Suárez Muñoz

    2010-01-01

    La comprensión lectora es uno de los principales temas de estudioen el ámbito educativo, tanto por la complejidad de los procesos yhabilidades implicados como por la importancia que tiene en la adquisición de contenidos escolares. El déficit en la lectura comprensiva es consecuencia de varios factores entre los que seencuentra la pobreza de vocabulario. Con nuestra investigación tratamos de determinar en qué medida existen dificultades en la comprensión lectora en escolares de educación prima...

  15. Vocabulario y comprensión lectora: algo más que causa y efecto

    Directory of Open Access Journals (Sweden)

    María José Godoy Merino

    2010-06-01

    Full Text Available La comprensión lectora es uno de los principales temas de estudioen el ámbito educativo, tanto por la complejidad de los procesos yhabilidades implicados como por la importancia que tiene en la adquisición de contenidos escolares. El déficit en la lectura comprensiva es consecuencia de varios factores entre los que seencuentra la pobreza de vocabulario. Con nuestra investigación tratamos de determinar en qué medida existen dificultades en la comprensión lectora en escolares de educación primaria y si existen limitaciones en el vocabulario de los niños que la presentan.

  16. Portal de Descoberta: um OPAC com vida social e algo mais

    OpenAIRE

    Bento, Filipe Manuel dos Santos; Silva, Lidia Oliveira da

    2010-01-01

    Nesta comunicação são abordados alguns pontos fulcrais do novo modelo de pesquisa, descoberta e partilha de informação que se visa implementar nos Serviços de Biblioteca, Informação Documental e Museologia da Universidade de Aveiro, integrando o OPAC (Online Public Accessible Catalog, catálogo de pesquisa bibliográfica) e os seus acervos bibliográficos, agregando conteúdos de fontes externas e contribuições dos seus utilizadores. Neste modelo, não apenas o documento é elemento de referência m...

  17. Deporte entre rejas. ¿Algo más que control social?

    Directory of Open Access Journals (Sweden)

    Martos García, Daniel

    2009-08-01

    Full Text Available Sport practices belong to the prison’s landscape. Nevertheless, there is a lack of knowledge about the role they play in prisons ordinary life. Therefore, we developed an ethnographic study, mainly located in the sports hall of a Spanish prison, to understand exercise and sport meanings among inmates, workers, educators and monitors. Data indicate that social rehabilitation through sport is an illusion, although it is the official goal of imprisonment. Even so, participants assign different benefits to exercise and sport, especially inmates. Educative potential of self-control through sport and, mainly, distraction and compensation strategy to cope with boredom, time and confinement’s physical and mental problems are among them. Paper concludes that exercise and sport can play a symbolic ‘evasion’ and personal liberation, but are constrained by a context in which control and order are at the forefront of everything.

    Las actividades deportivas forman parte del paisaje de las prisiones. Sin embargo, escasea el conocimiento sobre el papel que desempeñan en la vida cotidiana de las cárceles. Por ello realizamos un estudio etnográfico, principalmente en el polideportivo de una prisión española, dirigido a comprender los significados que el ejercicio físico y el deporte tenían para los presos, funcionarios, educadores y monitores. Los resultados indican que la reinserción mediante estas prácticas es una ilusión, a pesar de ser la finalidad oficial de la reclusión. Aun así, les asignan diversos beneficios, especialmente los presos y presas. Entre ellos se encuentra el potencial educativo ligado al autocontrol y, sobre todo, el entretenimiento y la compensación para ocupar el tiempo, huir del hastío y sobrellevar los problemas del encierro. El artículo concluye que el ejercicio y el deporte pueden tener un papel de “evasión” simbólica y liberación personal, aunque los presos viven atenazados por un contexto en el que prima el orden y el control por encima de todo.

  18. Michel Maffesoli: a pós-modernidade se orienta para "algo de anarquista"

    Directory of Open Access Journals (Sweden)

    Eduardo Portanova Barros

    2013-12-01

    Full Text Available O sociólogo francês Michel Maffesoli concedeu esta entrevista no dia 10 de dezembro de 2012, em Paris, na sua residência, alguns dias após a morte de seu mestre, o antropólogo Gilbert Durand, autor de, entre outros, As estruturas antropológicas do imaginário. Na obra de Maffesoli, é clara a influência de seu amigo o mestre Gilbert Durand. Em uma das passagens de Homo eroticus – Des communions émotionnelles (CNRS Editions, 2012, Maffesoli relaciona C.G. Jung a Durand, lembrando que as histerias coletivas se encontram nas raízes daquilo ambos chamavam “psique objetiva”, ou seja, um conjunto estrutural psíquico de longa tradição, o “inconsciente coletivo” junguiano. O próprio Maffesoli reconhece dever a Durand a idéia de que a essência do gênero humano residiria no equilíbrio conflitual. Nesta entrevista, ele fala de imaginário, pós-modernidade e cultura e anarquismo.

  19. Computational Prediction of Protein–Protein Interaction Networks: Algo-rithms and Resources

    OpenAIRE

    Zahiri, Javad; Bozorgmehr, Joseph Hannon; Masoudi-Nejad, Ali

    2013-01-01

    Protein interactions play an important role in the discovery of protein functions and pathways in biological processes. This is especially true in case of the diseases caused by the loss of specific protein-protein interactions in the organism. The accuracy of experimental results in finding protein-protein interactions, however, is rather dubious and high throughput experimental results have shown both high false positive beside false negative information for protein interaction. Computation...

  20. Encefalopatía neonatal. algo mas que asfixia al nacer

    OpenAIRE

    Cifuentes C., Yolanda; Bermúdez, Martha; Arteaga, Clara

    2011-01-01

    La hiperglicinemia no cetósica (HGNC) es un error innatodel metabolismo, de carácter recesivo, debido a un defectoen el sistema de clivaje, que ocasiona acumulaciónde glicina en la sangre y en el sistema nervioso central,donde activa dos receptores diferentes. El receptor localizadoen la médula espinal, inhibitorio, provoca la apneay el hipo de estos pacientes. El receptor cortical,excitatorio, produce la lesión cerebral y las convulsiones.Se presenta la historia de un recién nacido masculino...