Strange Material Research Articles

Feeling the Heat: Strange material breaks a classic rule of physics.

Feeling the Heat: Strange material breaks a classic rule of physics.

Avaliação das condições de armazenamento e rotulagem de amostras Matricaria chamomila L comercializadas no município de Campina Grande, Estado da Paraíba, Brasil

Este estudo objetivou analisar amostras de Matricaria Chamomilla L comercializadas em feiras livres, arcas e ervanários do município de Campina Grande-PB, a partir da legislação da RDC 10/2010 e Farmacopéia Brasileira (2019). Trata-se de um estudo de caráter exploratório, onde seis amostras adquiridas na região central do município foram identificadas em grupos de acordo com seu local de aquisição, em seguida foram pesadas e distribuídas sobre papel para separação do material estranho depois as amostras foram pesadas novamente e calculado sua porcentagem em relação ao peso inicial. Posteriormente, foram analisadas as condições de embalagem e rotulagem de acordo com a legislação vigente sobre o tema. Com as observações, foi possível verificar que todas as embalagens estavam fora das normas da RDC 10/10, apenas duas das seis amostras apresentavam lacre vedando a embalagem e somente uma amostra tem parte da rotulagem recomendada, enquanto as restantes apresentavam ausência de rótulos ou folhetos. Após análise observou-se que as amostras do ervanário 1 (1,1%), feira livre 2 (1,2%), arca 1 (1,1%) e arca 2 (1,1%) estavam dentro do limite preconizado (5%), enquanto as outras amostras analisadas não apresentaram nenhum componente de contaminação. Concluiu-se que ao avaliar o cumprimento da legislação, é possível notar descuidos tanto na presença de materiais estranhos como nas embalagens impróprias, onde nenhuma apresentou o cumprimento de todos os requisitos exigidos pela RDC 10/10.

Intención de compra del consumidor organizacional de chile regional en el Estado de Puebla, México.

La producción de chile en el estado de Puebla enfrenta dificultades para su permanencia depende, entre otras cosas, competir eficazmente en el mercado, donde la información de la cadena de valor es crucial para generar opciones para la comercialización. El objetivo de este trabajo fue conocer la intención y conducta de compra del consumidor organizacional para satisfacer sus necesidades de chile con la producción regional. Se aplicó una encuesta a 36 consumidores industriales para determinar su intención de compra y se plantearon preguntas cerradas para conocer su conducta de compra. Se realizó un análisis de fiabilidad, se hicieron tablas de contingencia y una correlación de Spearman. Los chiles de mayor consumo fueron el jalapeño, el chipotle y el serrano. Las características de mayor importancia para los consumidores fueron la frescura, la ausencia de material extraño y que no tenga daño físico. La central de abasto local es el principal sitio de compra de la micro y pequeña empresa, mientras que la gran empresa se abastece de una red nacional. Se determinó que existe una intención positiva de compra de chile regional, siempre y cuando se cumplan las condiciones de precio competitivo, calidad del fruto y aspectos fiscales.

Processing Pipeline of Sugarcane Spectral Response to Characterize the Fallen Plants Phenomenon

Nowadays, in agronomic systems it is possible to make a variable management of inputs to improve the efficiency of agronomic industry and optimize the logistics of the harvesting process. In this way, it was proposed for sugarcane culture the use of remote sensing tools and computational methods to identify useful areas in the cultivated lands. The objective was to use these areas to make variable management of the crop. When at the moment of harvesting the sugarcane there are fallen stalks, together with them some strange material (vegetal or mineral) is collected. This strange material is not millable and when it enters onto the sugar mill it causes important looses of efficiency in the sugar extraction processes and affects its quality. Considering this issue, the spectral response of sugarcane plants in aerial multispectral images was studied. The spectral response was analyzed in different bands of the electromagnetic spectrum. Then, the aerial images were segmented to obtain homogeneous regions useful for producers to make decisions related to the use of inputs and resources according to the variability of the system (existence of fallen cane and standing cane). The obtained segmentation results were satisfactory. It was possible to identify regions with fallen cane and regions with standing cane with high precision rates.

Gur, Ghur, Guhr or Bur? The quest for a metalliferous prime matter in early modern times

AbstractIt has been traditionally held that the idea of a prime matter of metals was abandoned in the eighteenth century, especially after the failure of Hermann Boerhaave to find it in mercury. However, documents tell a different story: the search for the metalliferous principle, in the form of an odd substance known as Gur, Guhr, Ghur or Bur, was very much alive in the 1700s. This was a project that involved Boerhaave himself, as is shown by his correspondence with J.B. Bassand. The first mention of this strange material appears in Sarepta, a collection of sermons by the sixteenth-century Bohemian preacher Johannes Mathesius, sometimes mentioned in the specialized literature but rarely studied. This paper discusses the various conceptions of this material held as the prime matter of metals, from Mathesius to the eighteenth century, involving reputed authors such as John Webster, Jan B. van Helmont, Georg E. Stahl and Boerhaave.

Cabinets of Grotesquerie: The Mutter Museum and Medical Historicization

The venerable College of Physicians of Philadelphia is the oldest extant medical organization in the United States. It is now a cultural organization for “upholding the ideals and heritage of medicine,” but it once provided formalized medical training. A major part of the College is the Mutter Museum, a large collection of medical ‘oddities,’ preserved specimens, plaster and wax casts, and illustrations. Originally conceived as a service to the medical profession, the museum has since become a draw for lay visitors. In addition to artifacts that illustrate the material history of medicine (such as surgical blades, stethoscopes, etc.) and a large number of pathological anatomical specimens, the collection includes a great deal of strange material, such as a tumor removed from Grover Cleveland, and the preserved body of a woman who underwent natural mummification.This paper examines the objects assembled under the auspices of the Mutter Museum. I am interested in the collection as an archive, as a pedagogical tool, and as an historical record. Rather than working from a more conventional museology approach, I propose an experiential and functional analysis, focusing on the how the museum is experienced by visitors, and how it performs cultural functions. I view the collection as an active and actively constituted entity, an archive which executes tasks, forms relationships, and works to maintain and transform itself and its purposes. The life-stages of this museum provide an exemplary glimpse at the processes and procedures by which meaning is transformed as a collection evolves.

A Super Mix Inside Neutron Stars

The mixture of a superconductor and a superfluid–as may occur inside a neutron star–could respond to the star’s magnetic field in ways never seen in earthly superconductors, according to a new theory. The strange material doesn’t fit into the two standard superconducting categories.

ANÁLISES FÍSICO-QUÍMICAS E DA PUREZA DO EXTRATO SECO DE Piper methysticum G. Forster (KAVA-KAVA)

Piper methysticum G. Forster, popularmente conhecido como Kava-Kava, é originário das ilhas do Oceano Pacífico, estando entre os 10 fitoterápicos mais vendidos no Brasil, principalmente para o tratamento de ansiedade e insônia e como alternativa ao uso dos medicamentos benzodiazepínicos. O presente trabalho, em vista da carência de informações sobre esta planta, procurou desenvolver parâmetros que auxiliem no controle de qualidade do extrato seco da Kava, fornecendo dados que favoreçam e incentivem a elaboração de sua monografia farmacopéica, o que contribuirá para o uso mais seguro e eficaz deste fitoterápico. Como resultados, obteve-se a presença de compostos fenólicos no extrato seco da Kava; um teor de umidade de 4,3%; pH e densidade com valores de 4,64 e 0,63 g/mL, respectivamente, e ausência de material estranho. O extrato seco apresentou-se com coloração amarelo-esverdeado, extremamente fino e com odor levemente adocicado, que quando em contato com a mucosa bucal provoca intensa salivação. Não foi possível obter-se resultados satisfatórios quanto ao teor de cinzas totais e ponto de fusão.

Controle de qualidade de drogas vegetais a base de Bauhinia forficata Link (Fabaceae)

Este trabalho teve como objetivo utilizar métodos de controle de qualidade para algumas drogas vegetais a base de Bauhinia forficata comercializadas nos municípios de Itajaí e Balneário Camboriú, utilizando como marcador químico o flavonóide kaempferitrina. As metodologias empregadas foram cromatografia em camada delgada (CCD) e cromatografia líquida de alta eficiência (CLAE), além da análise microscópica, análise de rótulos e características organolépticas e a presença de material estranho. Todas as análises foram comparadas com os resultados demonstrados pela amostra autêntica, devidamente identificada, de B. forficata (A). Foram analisadas 06 amostras a base de Bauhinia identificadas através de siglas, sendo a B. forficata autêntica a amostra A e seis comerciais denominadas B-G. Todas as amostras comerciais foram reprovadas quanto à presença de material estranho, ficando acima de 2%. Na análise microscópica observou-se que apenas a amostra E e G apresentam-se iguais à B. forficata. A análise cromatográfica revelou a presença de kaempferitrina somente nas amostras B, C, E e G.

Estudo artroscópico da articulação do ombro em cadáveres de cães

OBJETIVO: Avaliar as dificuldades técnicas e possibilidade de visibilização das estruturas intra-articulares na artroscopia da articulação do ombro em cadáveres de cães. MÉTODOS: Artroscopia foi realizada em 30 articulações utilizando-se os portais lateral para o artroscópio e craniolateral para o instrumental. RESULTADOS: Lesões encontradas durante o estudo artroscópico consistiram de osteocondrose da cabeça umeral, presença de material estranho aderido à cápsula articular e lesão do ligamento glenoumeral medial, além daquelas da cartilagem promovidas de forma iatrogênica. Complicações decorrentes do procedimento consistiram de dificuldade na confecção dos portais artroscópico e instrumental e realização da técnica de triangulação, com deslocamento prematuro do artroscópio e instrumental e infiltração periarticular. CONCLUSÃO: A utilização da artroscopia no cão é uma técnica difícil e requer prévio treinamento em cadáveres anterior à sua realização em casos clínicos.

John G. Lindberg and the discovery of exfoliation syndrome.

John G. Lindberg, a young Finnish ophthalmology resident, started a research project in 1914 aiming at an academic dissertation. His plan was to elucidate Axenfeld's observations on iris changes in senile eyes. Axenfeld had described two types of degeneration of the iris: a hyaline degeneration of the iris pupillary zone causing poor pupillary dilatation with mydriatics and an atrophy of the iris pigment epithelium at the pupillary border. For his research Lindberg had to construct a slit-lamp biomicroscope by studying Gullstrand's monograph on the matter; slit-lamp biomicroscopes were not commercially available at that time. A Sach's lamp was used for transillumination of the iris. While conducting his research Lindberg paid attention to greyish flakes and fringes at the pupillary border. He also noted how this strange material formed a membrane on the anterior lens surface. Documentation was made by skillful hand drawings. The new phenomenon was found to be as common in cataract patients as in non-cataractous controls older than 55 years. The phenomenon was observed in 50% of glaucoma patients. Age was the decisive factor; the phenomenon was more prevalent with advancing age. Lindberg published his results as a thesis at the University of Helsinki in 1917. When attending a Nordic Congress of Ophthalmology in 1921, Lindberg met Norwegian ophthalmologist, Birger Malling, and gave him his thesis and explained the new findings. In 1920-21 Lindberg worked at Axenfeld's clinic in Freiburg, Germany. During this period he met in Basel, Switzerland, a Swiss ophthalmologist, Alfred Vogt. He told Vogt about his research and provided him with copies of his thesis. Both Malling and Vogt published papers on exfoliation in 1923 without referring to Lindberg's work. Lindberg did not, however, interfere with these papers. Thus Lindberg was forgotten by his contemporaries as a scientist. However, his main conclusions on exfoliation are still valid today. The life of this remarkable ophthalmologist is described in the present paper.

Presidential address: One man's odyssey

Presidential address: One man's odyssey

Engineering Characteristics of Mansourah Peat layer.(Dept.C)

Many borings in Mansourah City should that there is a layer of peat with thickness ranges from 1.0 to 4.0 m at depths range from 6.0 to 12.0 m all parts of the city and its surroundings. Peat has a great capacity for taking up and holding water , high shrinkage , great range of density and specific grauity, high void ratio , high degree of permeability , low strength and high degree of settlement in the few hours of loading. A complete testing programme was performed on samples taken out of the Mansourah City. Results showed that Mansourah peat is a quite complicated and strange material which mean that a great precautions must be done to each a safe highway or building project. Many figures and relationships are obtained in the paper to help engineers in the design and execution stages but tests must be performed in each individual case.

The Unknown God

MR. ALFRED NOYES is one of a not inconsiderable number of literary intellectuals who, having begun thirty or forty years ago as agnostics, have become in their maturity orthodox and practising Catholics. This spectacle of agnostic poets leaving the waste land and returning ad limina is a sign of the times. Now that the traditional European culture, which was predominantly literar, is in danger of being displaced by a new scientific dulture with its strange products, human and material, the poet may experience a very natural distaste. He sees, or thinks he sees, the world being rapidly decivilised by the mass barbarian, who is a deplorable byproduct of scientific developments. He is appalled by the prevalent vulgarity and insensitiveness to the values he cherishes, and repudiates modernity; and who shall say that he is altdgether wrong? Compare the shallow philosophy, or philosophies (since there is a Babel of conflicting tongues) of modernity with the philosophic, perennis of traditional Catholicism—with its richness, its comprehensiveness, its sweep and power of speculation, its nobility and depth of emotional content, and its rationality. The Unknown God. By Alfred Noyes. Pp. 383. (London: Sheed and Ward, 1934.) 7s. 6d. net.