Penggunaan Media Gambar Seri Dalam Meningkatkan Keterampilan Menulis Cerita Siswa Di Kelas III SDN Inpres Tabing Kecamatan Peling Tengah

Pokok permasalahan dalam penelitian ini adalahsiswa kurang terampil dalam hal menulis cerita pada pembelajaran bahasa Indonesia. Berdasarkan hasil observasi yang didapatkan bahwa siswadi Kelas III SDN Inpres Tabing masih kurang terampil dalam hal menulis cerita pada pembelajaran bahasa Indonesia, disamping itu siswa yang mengikuti pembelajaran kurang bersemangat karena guru kurang melibatkan siswa dalam pelaksanaan belajar mengajar, sehingga hal tersebut yang berdampak pada kurangnya keaktifan siswa dalam pembelajaran menulis.Berdasarkan permasalahan tersebut, peneliti melakukan penelitian tindakan kelas yang menggunakan pendekatan kuantitatif. Perencanaan penelitian yang dilakukan berdasarkan empat tahap, yaitu 1) perencanaan, 2) pelaksanaan, 3) observasi dan 4) refleksi. Data-data yang dikumpulkan berupa data dari aktivitas guru dan siswa dengan menggunakan lembar observasi dan data hasil belajar siswa yang diperoleh dengan memberikan tes pembelajran menggunakan media gambar seri.Pelaksanaan tindakan dilakukan sebanyak 2 siklus. Pada siklus I, diperoleh daya serap individu sebesar 50% dengan ketuntasan klasikal hanya mencapai 22,2%. Kemudian pada pelaksanaan siklus II mengalami peningkatan dengan perolehan daya serap klasikal sebesar 80% dengan ketuntasan belajar klasikal sebesar 100%. Berdasarkan hasil penelitian yang diperoleh, maka dapat disimpulkan bahwa penggunaan media gambar seri dapat meningkatkan keterampilan menulis pada siswa kelas III SDN Inpres Tabing Kecamatan Peling Tengah dalam pembelajaran Bahasa Indonesi

ПОДГОТОВКА ПОВЕРХНОСТИ ИЗДЕЛИЙ ИЗ СПЛАВА Д16Т ПЕРЕД НАНЕСЕНИЕМ ВАКУУМНО-ПЛАЗМЕННЫХ ПОКРЫТИЙ

The paper presents results of  investigations on qualitative and quantitative characteristics of impurities on the surface of products made from aluminium alloy Д16Т .It has been shown that the main impurities of the products made from alloy Д16Т  are carbo-hydrates of paraffin and methanoic series.  In order to obtain high quality coating a technological process pertaining to surface cleaning prior to application vacuum-plasma coatings must include out- and intra-chamber treatments. Приведены результаты исследования качественных и количественных характеристик загрязнений на поверхности изделий из алюминиевого сплава Д16Т.Показано, что для изделий из сплава Д16Т основными видами загрязнений являются углеводы парафинового и метанового рядов. Для получения высококачественного покрытия технологический процесс очистки поверхности перед нанесением вакуумно-плазменных покрытий должен состоять из вне- и внутрикамерной обработки

ИССЛЕДОВАНИЕ ИЗНОСОСТОЙКОСТИ УПРОЧНЯЮЩИХ ПОКРЫТИЙ НА ИЗДЕЛИЯХ ИЗ СПЛАВА Д16Т

The paper provides results of investigations pertaining to wear resistance and friction characteristics of strengthening surfaces on the products made of D16T alloy in the process of sliding friction without lubricant material.Приводятся результаты исследования износостойкости и фрикционных характеристик упрочняющих покрытий на деталях из сплава Д16Т при трении скольжения без смазочного материала

ВЛИЯНИЕ ИОННОЙ ОБРАБОТКИ НА ИЗМЕНЕНИЕ ИСХОДНОЙ ШЕРОХОВАТОСТИ ПОВЕРХНОСТИ ОБРАЗЦОВ ИЗ СПЛАВА Д16Т

Results of the investigations pertaining to study of influence of technological ionic processing process parameters on changes in an initial roughness of samples made of D16Т alloy are provided in the paper.The paper shows that bombardment by high-energy Ti+-ions is effective at processing a surface with a high initial roughness and is not suitable for processing surfaces after grinding and polishing. It is necessary to use low-energy ions of inert gases for processing a surface with a low initial roughnessПриведены результаты исследования влияния технологических параметров процесса ионной обработки на изменение исходной шероховатости образцов из сплава Д16Т.Показано, что бомбардировка высокоэнергетическими ионами Ti+ эффективна при обработке поверхности с высокой исходной шероховатостью и непригодна для обработки поверхностей после шлифования и полирования. Для обработки поверхности с низкой исходной шероховатостью необходимо использовать низкоэнергетические ионы инертных газов.

Hydrogen absorption in thin ZnO films prepared by pulsed laser deposition

ZnO films with thickness of ~80 nm were grown by pulsed laser deposition (PLD) on MgO (1 0 0) single crystal and amorphous fused silica (FS) substrates. Structural studies of ZnO films and a high quality reference ZnO single crystal were performed by slow positron implantation spectroscopy (SPIS). It was found that ZnO films exhibit significantly higher density of defects than the reference ZnO crystal. Moreover, the ZnO film deposited on MgO substrate exhibits higher concentration of defects than the film deposited on amorphous FS substrate most probably due to a dense network of misfit dislocations. The ZnO films and the reference ZnO crystal were subsequently loaded with hydrogen by electrochemical cathodic charging. SPIS characterizations revealed that absorbed hydrogen introduces new defects into Zn

Categorical encoding of color in the brain

The areas of the brain that encode color categorically have not yet been reliably identified. Here, we used functional MRI adaptation to identify neuronal populations that represent color categories irrespective of metric differences in color. Two colors were successively presented within a block of trials. The two colors were either from the same or different categories (e.g., “blue 1 and blue 2” or “blue 1 and green 1”), and the size of the hue difference was varied. Participants performed a target detection task unrelated to the difference in color. In the middle frontal gyrus of both hemispheres and to a lesser extent, the cerebellum, blood-oxygen level-dependent response was greater for colors from different categories relative to colors from the same category. Importantly, activation in these regions was not modulated by the size of the hue difference, suggesting that neurons in these regions represent color categorically, regardless of metric color difference. Representational similarity analyses, which investigated the similarity of the pattern of activity across local groups of voxels, identified other regions of the brain (including the visual cortex), which responded to metric but not categorical color differences. Therefore, categorical and metric hue differences appear to be coded in qualitatively different ways and in different brain regions. These findings have implications for the long-standing debate on the origin and nature of color categories, and also further our understanding of how color is processed by the brain

The `Parahippocampal Place Area' Responds Selectively to High Spatial Frequencies

Defining the exact mechanisms by which the brain processes visual objects and scenes remains an unresolved challenge. Valuable clues to this process have emerged from the demonstration that clusters of neurons (“modules”) in inferior temporal cortex apparently respond selectively to specific categories of visual stimuli, such as places/scenes. However, the higher-order “category-selective” response could also reflect specific lower-level spatial factors. Here we tested this idea in multiple functional MRI experiments, in humans and macaque monkeys, by systematically manipulating the spatial content of geometrical shapes and natural images. These tests revealed that visual spatial discontinuities (as reflected by an increased response to high spatial frequencies) selectively activate a well-known place-selective region of visual cortex (the “parahippocampal place area”) in humans. In macaques, we demonstrate a homologous cortical area, and show that it also responds selectively to higher spatial frequencies. The parahippocampal place area may use such information for detecting object borders and scene details during spatial perception and navigation.National Institutes of Health (U.S.) (NIH Grant R01 MH6752)National Institutes of Health (U.S.) (grant R01 EY017081)Athinoula A. Martinos Center for Biomedical ImagingNational Center for Research Resources (U.S.)Mind Research Institut

The F-box protein FBXO45 promotes the proteasome-dependent degradation of p73

The transcription factor p73, a member of the p53 family, mediates cell-cycle arrest and apoptosis in response to DNA damage-induced cellular stress, acting thus as a proapoptotic gene. Similar to p53, p73 activity is regulated by post-translational modification, including phosphorylation, acetylation and ubiquitylation. In C. elegans, the F-box protein FSN-1 controls germline apoptosis by regulating CEP-1, the single ancestral p53 family member. Here we report that FBXO45, the human ortholog of FSN-1, binds specifically to p73 triggering its proteasome-dependent degradation. Importantly, SCF(FBXO45) ubiquitylates p73 both in vivo and in vitro. Moreover, siRNA-mediated depletion of FBXO45 stabilizes p73 and concomitantly induces cell death in a p53-independent manner. All together, these results show that the orphan F-box protein FBXO45 regulates the stability of p73, highlighting a conserved pathway evolved from nematode to human by which the p53 members are regulated by an SCF-dependent mechanism