1,218 research outputs found

    Modelling and measurement of 2D photonic crystals with tapered hole profiles

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    Pemimpin Yang Memiliki Integritas Menurut 2 Timotius Pasal 2

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    Penulisan ini bertujuan untuk merumuskan suatu konsep mengenai pemimpin yangmemiliki integritas yang diperlukan pada masa kini. Dalam penulisan penulisan inisebagai suatu karya ilmiah dibutuhkan suatu metode penelitian yang tepat gunamendapatkan data yang konkret.Kaitannya dengan itulah maka di sini penulis akan menguraikan sumber data danteknik pengumpulan data yang dipakai dalam penyusunan penulisan ini sebagai berikut:Pertama, yaitu pengambilan data melalui eksposisi Alkitab yang dijabarkan secaradeskriptif. Kedua, yaitu pengambilan data melalui buku-buku perpustakaan yang adakaitannya dengan pokok penulisan ini sebagai penunjang eksposisi Alkitab. Alkitabmenjadi sumber utama dalam penulisan penulisan ini. Ketiga, yaitu pengambilan datamelalui penelitian lapangan yaitu melalui wawancara dengan tujuan menunjang eksposisiAlkitab.Setelah pembahasan yang relatif panjang tentang pemimpin yang memilikiintegritas, maka dapat disimpulkan bahwa integritas sungguh sangat penting bagiseorang pemimpin. Integritas perlu bagi para pemimpin supaya pilar-pilarnya menjadisuperstruktur. Integritas adalah kekuatan konstruksi kepemimpinan.Bahwa dalam kehidupan seorang pemimpin tidak hanya harus memiliki suatukehidupan kerohanian yang tinggi tetapi juga harus ditunjang oleh integritas diri dalamkepemimpinannya. Bobot kepemimpinan tidak ditentukan oleh tingginya pendidikansemata atau banyaknya jam terbang dalam pelayanan, melainkan oleh integritas diri.Pecahnya Kerajaan Israel, hancurnya Kerajaan Yehuda adalah karena rapuhnyaintegritas para pemimpinnya. Keruntuhan masyarakat juga diawali dengan pemimpinyang kehilangan integritasnya, yang berakibat runtuhnya sendi-sendi normamasyarakat, seperti ayah tidak menjadi teladan, anak-anak mencari figur dari film,televisi dan media lainnya.Bahwa pemimpin yang berintegritas adalah pemimpin yang selalu mematutkanhidupnya dengan Firman Tuhan, bergantung penuh pada pimpinan Roh Kudus,mengusahakan karakter yang baik, dan selalu menunjukkan sikap kerendahan hati

    Orientation dependence of the elastic instability on strained SiGe films

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    At low strain, SiGe films on Si substrates undergo a continuous nucleationless morphological evolution known as the Asaro-Tiller-Grinfeld instability. We demonstrate experimentally that this instability develops on Si(001) but not on Si(111) even after long annealing. Using a continuum description of this instability, we determine the origin of this difference. When modeling surface diffusion in presence of wetting, elasticity and surface energy anisotropy, we find a retardation of the instability on Si(111) due to a strong dependence of the instability onset as function of the surface stiffness. This retardation is at the origin of the inhibition of the instability on experimental time scales even after long annealing.Comment: 3 pages, 4 figure

    Initial stage of the 2D-3D transition of a strained SiGe layer on a pit-patterned Si(001) template

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    We investigate the initial stage of the 2D-3D transition of strained Ge layers deposited on pit-patterned Si(001) templates. Within the pits, which assume the shape of inverted, truncated pyramids after optimized growth of a Si buffer layer, the Ge wetting layer develops a complex morphology consisting exclusively of {105} and (001) facets. These results are attributed to a strain-driven step-meandering instability on the facetted side-walls of the pits, and a step-bunching instability at the sharp concave intersections of these facets. Although both instabilities are strain-driven, their coexistence becomes mainly possible by the geometrical restrictions in the pits. It is shown that the morphological transformation of the pit surface into low-energy facets has strong influence on the preferential nucleation of Ge islands at the flat bottom of the pits.Comment: 19 pages, 7 figure

    Immobilization of allantoinase for the development of an optical biosensor of oxidative stress states

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    Allantoin, the natural end product of purine catabolism in mammals, is non-enzymatically produced from the scavenging of reactive oxygen species through the degradation of uric acid. Levels of allantoin in biological fluids are sensitively influenced by the presence of free radicals, making this molecule a candidate marker of acute oxidative stress in clinical analyses. With this aim, we exploited allantoinase—the enzyme responsible for allantoin hydrolization in plants and lower organisms—for the development of a biosensor exploiting a fast enzymatic-chemical assay for allantoin quantification. Recombinant allantoinase was entrapped in a wet nanoporous silica gel matrix and its structural properties, function, and stability were characterized through fluorescence spectroscopy and circular dichroism measurements, and compared to the soluble enzyme. Physical immobilization in silica gel minimally influences the structure and the catalytic efficiency of entrapped allantoinase, which can be reused several times and stored for several months with good activity retention. These results, together with the relative ease of the sol-gel preparation and handling, make the encapsulated allantoinase a good candidate for the development of an allantoin biosensor

    Aplasia del arco posterior del Atlas

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    Las anomalías congénitas del arco posterior del Atlas son poco frecuentes. Se presenta el caso de una paciente, que tras sufrir un accidente se diagnosticó de aplasia parcial del atlas. Esta lesión es considerada como una variante anatómica benigna de la región cráneovertebral. Se expone el desarrollo y el significado de esta anomalía.Congenital anomalies of the posterior arch of the atlas are uncommon. This paper presents the case of a patient who, as result of an accident, was diagnosed as having a congenital partial agenesia of the posterior arch of the atlas. This finding is considered as a benign anatomical variation of the craniovertebral junction region. The development and clinical significance of this anomaly are discussed

    Fracturas diafisarias de húmero en adultos: estudio retrospectivo de 53 casos

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    Se estudian retrospectivamente 53 pacientes adultos con fractura diafisaria de húmero, 36 de los cuales siguieron el tratamiento ortopédico funcional. En otros 17 casos, pacientes politraumatizados o con fracturas de tercio medio transversas, realizamos tratamiento quirúrgico. La edad media de los pacientes fue 48 ± 2 2 años. Se afectó más el lado derecho, siendo el antecedente etiológico más frecuente el accidente casual. No hubo diferencia entre el tiempo de consolidación con el tratamiento ortopédico-funcional (60 ± 14 días) y el tratamiento quirúrgico (56 ±1 2 días). Como complicaciones hubo 7 pseudoartrosis (4 tras tratamiento ortopédico-funcional y 3 tratamiento quirúrgico). La edad media de los pacientes con pseudoartrosis fue superior a la de los pacientes con consolidación completa. Ocho casos cursaron con lesión del nervio radial, obteniendo una recuperación funcional del 100% en un tiempo medio de 38 ± 30 semanas. Valorando los resultados con arreglo a los criterios de Gayet, hemos obtenido un 80% de buenos y muy buenos resultados con tratamiento ortopédico funcional y un 70% con tratamiento quirúrgico.Fifty three adult patients with fracture of the humeral shaft were retrospectively studied. Orthopaedic-functional treatment was applied in 36 cases. Seventeen patients with either multiple injuries or transverse middle-shaft fractures were surgically treated. The mean age of patients was 48 ± 21 years. Right side was most frecuently affected and casual fall was the predominated etiology. There were no differences regarding the average consolidation period between fractures treated conservatively (60 ± 14 days) and those undergoing surgery (56 ± 12 days). As complications, there were 7 monounions (4 conservative and 3 operative treatment). The mean age of patients with non-unions was higther than those with complete fracture consolidation. Radial nerve injury was seen in 8 cases. In all there patients, a complete functional were recovery was obtained with a mean average time of 38 ± 30 weeks. When evaluating functional results according to Gayet, satisfactory results were found in 80 per cent of patients with conservative treatment and 70 per cent of those surgically treated

    Osteosíntesis con tornillos de Kadar en las fracturas de cuello femoral

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    Se estudian retrospectivamente 30 pacientes con fractura de cuello femoral, tipo I y II de Garden, tratadas con osteosíntesis a compresión mediante tornillos de esponjosa tipo Kadar. La edad media de los pacientes fue de 70±19 años, siendo el accidente casual la etiología de todas ellas. Se valoró la calidad de la reducción y de la fijación mediante criterios radiográficos, siendo la reducción óptima en el 93 % de los pacientes y la fijación en el 50%. Como complicaciones hubo 2 desplazamientos precoces de la fractura. No ha habido ninguna pseudoartrosis ni necrosis avascular. Valorando los resultados con arreglo a los criterios de Merle d'Aubigné, hemos obtenidos un 84% de buenos resultados. Creemos que el factor pronóstico más importante es la reducción anatómica de la fractura.Thirty patients with Garden's type I and II femoral neck fracture treated by Kadar's spongiosa compressive screws were retrospectively studied. The mean age of patients was 70±9 years. In all cases, the etiology was a casual accident. Fracture reduction and positioning of the osteosynthesis were assessed by radiographic criteria. Satisfactory reduction was achieved in 93 percent of the patients, and the osteosynthesis was accurate in 50 per cent. As for complications, there were 2 early fracture redisplacement. There were neither non-union nor avascular necrosis. When evaluating functional results according to Merle d'Aubigné criteria, satisfactory results were found in 84 per cent of patients. In our opinion, the more important pronostic factor is the anatomic reduction of the fracture
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