Andrés

University of North Sumatra

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Tratado de aguas y riegos

Llauradó y Fábregas Andrés

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Citations (17)

Optimal thermoelectric figure of merit of Si/Ge core-shell nanowires

纳米研究：英文版 (2015)

Kaike Yang Andrés Cantarero Angel Angel

我们调查 Si 和 Ge nanowires 的热电的精力变换效率，并且特别地， Si/Ge 核心壳 nanowires 的。我们显示出 Si 核心 nanowire 上的薄 Ge 壳的存在怎么增加优点的全面数字。我们发现 Ge 壳的最佳的厚度为设备提供优点的最大的数字。我们也认为 Ge core/Si 是壳 nanowires，并且证明 Si 壳的最佳的厚度不存在，自从优点的数字是 nanowire 的半径的 monotonically 减少的功能。最后，我们验证联系电子精力差距到最大化设备的效率的最佳的工作温度的实验法律。

Figure of Merit

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Human papillomavirus in esophageal squamous cell carcinoma in Colombia and Chile

世界胃肠病学杂志：英文版（电子版） (2006)

Andrés Castillo Francisco Aguayo Chihaya

瞄准：为了在食道的有鳞的房间癌(ESCC ) 检验人的乳头状瘤病毒(HPV ) 的存在，从哥伦比亚和智利收集的标本分别地在大陆的北、南部的结束定位了。方法：我们分别地从哥伦比亚和智利检验了 47 和 26 个修理福尔马林、嵌入石蜡的 ESCC 标本。HPV 为 PCR 用 GP5+/GP6+ 教材对被检测，并且由南部的污点分析证实了。定序 L1 区域碎片的分析被用来识别 HPV 遗传型。另外，所有标本染色的 P16 (INK4A ) 蛋白质免疫被进行。结果：HPV 在 21 个 ESCC 标本(29%) 被检测。定序 L1 区域碎片的分析在 6 个哥伦比亚的盒子(13%) 中并且在 5 个智利人盒子(19%) 中识别了 HPV-16 染色体。HPV-18 在哥伦比亚然而并非在任何智利人盒子中在 10 种情况(21%) 中被检测。自从智利人 ESCC ，盒子有 HPV-16 的更高的流行(没有统计意义)，但是 HPV-18 的显著地更低的流行比在哥伦比亚的情况中( P = 0.011 )尽管二个国家有类似的 ESCC 发生率，HPV相关的 ESCC 的频率不能被影响 ESCC 的发生的风险因素强烈影响。HPV-16 染色体经常是更多在 p16 检测了积极的癌，尽管差别不是统计上重要的。HPV-18 察觉率没与 p16 表示显示出任何协会。区分得好的肿瘤趋于有 HPV-16 或 HPV-18，但是协会不是统计上重要的。除 HPV-16 以外的 HPV 遗传型或 18 没在任何一个土地被检测。结论：HPV-16 和 HPV-18 遗传型能在从二个南方美国人国家收集的 ESCC 标本被发现。在在 ESCC 的 HPV-16 存在和 p16 表示之间的关系上的进一步的研究将帮助在 ESCC 位于 HPV 的存在下面的机制的理解。

Papillomaviridae

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Review of SAW oscillator performance

Montress Parker Andrés

State-of-the-art phase noise performance has been demonstrated for both surface acoustic wave (SAW) resonator and delay line stabilized oscillators. The same basic feedback-loop oscillator design philosophy was applied in each case in order to achieve these results. This paper reviews the design, fabrication, component selection, and performance for an extremely low-noise SAW resonator hybrid circuit oscillator. Finally, several recent results including the flicker noise of SAW resonator devices and the vibration sensitivity of all quartz package SAW resonators are discussed in the context of potential SAW oscillator performance enhancements

Electronic oscillator

Crystal oscillator

10.1109/ultsym.1994.401550

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Citations (35)

Characterizing proteases in an Antarctic Janthinobacterium sp. isolate： Evidence of a protease horizontal gene transfer event

极地科学进展：英文版 (2015)

Cecilia Cecilia Martinez-Rosales Juan Juan José Marizcurrena

We report the isolation of a cold-adapted bacterium belonging to the genus Janthinobacterium(named AU11), from a water sample collected in Lake Uruguay(King George Island, South Shetlands). AU11(growth between 4℃ and 30℃) produces a single cold-active extracellular protease(Ex PAU11), differentially expressed at low temperature. Ex PAU11 was identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-To F MS) as an alkaline metallo-protease(70% coverage with an extracellular protease of Janthinobacterium sp. PI12), and by protease-inhibitor screening identified as a serine-protease. To the best of our knowledge this is the first experimental evidence of a cold-active extracellular protease produced by Janthinobacterium. Furthermore, we identified a serine-protease gene(named JSP8A) showing 60% identity(98% query coverage) to subtilisin peptidases belonging to the S8 family(S8A subfamily) of many cyanobacteria. A phylogenetic analysis of the JSP8 A protease, along with related bacterial protein sequences, confirms that JSP8 A clusters with S8 A subtilisin sequences from different cyanobacteria, and is clearly separated from S8 A bacterial sequences of other phyla(including its own). An analysis of the genomic organization around JSP8 A suggests that this protease gene was acquired in an event that duplicated a racemase gene involved in transforming L- to D-amino acids. Our results suggest that AU11 probably acquired this subtilisin-like protease gene by horizontal gene transfer(HGT) from a cyanobacterium. We discuss the relevance of a bacterial protease-HGT in the Antarctic environment in light of this hypothesis.

Subtilisin

Horizontal Gene Transfer

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Studies on Strength and Flexural Behaviour of Reinforced Concrete Beams with the Corroded Steel Reinforcements as a result of Sodium Chloride (NaCl)

Journal of Physics Conference Series (2023)

M Aswin Andrés R Gotami

Abstract Corrosion on embedded reinforcement is a serious structural failure which its deterioration are rarely concerned. Reinforcing steel are frequently found left unattended on corrosive environment where potential corroding substances might expose surface of rebar resulting in corrosion initiation. This paper reports result of a study conducted to investigate the impact of a rebar corrosion on flexural strength of reinforced concrete beam induced by 10.5% NaCl. Tensile test was conducted in this study to determine the degradation of tensile strength on rebar and was later utilized to analyse the reduction of maximum load bearing capacity on reinforced concrete beam. Both flexural rebar and tensile rebar were corroded using manual basting method which is carried out every day from 08.00 A.M-10 P.M (every 2 hours step). The corrosion area on flexural steel samples is at the maximum flexural strength area (400 mm in the middle of the span) and is later used on flexural testing purposes after casting with concrete, the tensile steel samples which is 600 mm span of rebar is later utilized for tensile testing purposes and is corroded in the middle of the span (185 mm in the middle of the span). Based on test results, it was observed that steel bar suffered significant loss of weights due to corrosion induced by 10.5% NaCl with respect to its corroding duration three and four months are 1.85% and 3.34% reduction of weight from its normal form and its tensile strength degraded, respectively, 6.78 % and 9.86%. Meanwhile, the reinforced concrete beam with corroded steel bars happened to experience degradation of maximum load capacity which are, respectively, 10% and 15% reduction for three and 4 months of corroding duration.

Rebar

10.1088/1742-6596/2421/1/012029

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Citations (1)

Synthesis of Nd1-xCaxCoO3 Perovskite Nanowires for Thermoelectric Applications

Mario Mario Culebras Clara Gómez Andrés

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Citations (2)

[Role of the p27 cell-cycle inhibitor during vascular remodeling].

PubMed (2002)

Andrés Antonio Dı́ez-Juan