495 research outputs found

    A Demographic Profile of Independently Incorporated Native American Foundations and Selected Funds in the United States

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    This report gives basic demographic information on 60 grantmaking entities grouped into three categories: 1) Native foundations that are independently incorporated; 2) 501c3 Native organizations; and 3) tribal funds. These categories capture the variety of Native controlled approaches currently at work in the field

    Domination and resistance in liberal settler colonialism : Palestinians in Israel between the homeland and the transnational

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    This thesis explores native resistance to settler colonialism through its focus on the ’48 Palestinians (also known as the Palestinian citizens of Israel). It innovatively brings together postcolonial theory and settler colonial studies to explore the racialised, ethnicised, gendered and sexualised dimensions of settler colonial violence, how these shape native modalities of resistance and subordination, and the ways in which the transnational is imbricated within these processes. The thesis undertakes two case studies – on the Palestinian Bedouin struggle for land rights and on the Palestinian queer movement – drawing upon archival research, other primary texts and ethnographic exploration. The case studies are interrogated in relation to the liberal-nationalist framework that dominates ’48 Palestinian discourse and resistance. The thesis radically critiques the frameworks of ethnocracy, ethnonationalism and minority studies that have been most prevalent in earlier research on ’48 Palestinians. Instead, this study builds on an understanding of resistance as diagnostic of power (Abu-Lughod 1990). It argues that the resistance of Palestinians in Israel is diagnostic of the structure of Israel as a liberal settler state, and unfolds in relation to the liminal positionality of ’48 Palestinians between (semi)liberal citizenship and colonial subjecthood. It further argues that the subjectivities and modalities of resistance of ’48 Palestinians are shaped through the racialising logics of settler colonialism, and the intersectionalities of these logics with ethnicity, gender and sexuality. Through the focus in the two case studies on indigeneity (and the fetishisation of the indigenous subject as premodern) and LGBT rights (and the folding of queer subjects into modernity), the thesis further suggests that the resistance of ’48 Palestinians is also shaped in complex and ambivalent ways by their ongoing encounters with the liberal frameworks of multiculturalism and human rights. The case studies illuminate that while these frameworks can serve as vehicles for empowerment, they can also reproduce the racialising logics of settler colonialism and further its entrenchment. This means that ’48 Palestinians constantly (re)negotiate their identities, their struggles and their political agendas within multiple circuits of power. The ambivalence of the encounter with the liberal settler state, as inclusionary and exclusionary, and human rights, as empowering and oppressive, produces native resistance to settler colonialism to be shaped and reshaped by competing political projects and hybrid modalities of resistance that include practices of self-essentialising, Bhabian notions of resistance as subversion, and a Fanonian politics of rejection as both pedagogy and a political imperative. The thesis concludes that the mobilisation of a more radical vision of decolonisation requires transcendence of both liberal settler colonialism and the liberal politics of human rights

    Codoping-Induced, Rhombus-Shaped Co<sub>3</sub>O<sub>4</sub> Nanosheets as an Active Electrode Material for Oxygen Evolution

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    Nanostructured Co<sub>3</sub>O<sub>4</sub> doped with Zn<sup>2+</sup>, Ni<sup>2+</sup>, and both were directly grown on an ITO substrate by an easily available hydrothermal method. The doped Co<sub>3</sub>O<sub>4</sub> showed a unique structural morphology evolution upon controlling the doping elements and the doping ratio of the cations. For the codoped samples, the novel rhombus-shaped Co<sub>3</sub>O<sub>4</sub> nanosheets doped with Zn<sup>2+</sup> and Ni<sup>2+</sup> (concentration ratio of 1:2) exhibited the optimal electrocatalytic performance. The sample showed a current density of 165 mA cm<sup>–2</sup> at 1.75 V, approximately 1.6 and 4 times higher than that of samples doped with Zn<sup>2+</sup> and Ni<sup>2+</sup> at a concentration ratio of 1:1 and 1:3. The unique architecture and its corresponding modified physical properties, such as high active-site density created by codoping, large structural porosity, and high roughness, are together responsible to its superior performance. For codoped Co<sub>3</sub>O<sub>4</sub> nanostructures, Zn<sup>2+</sup> facilitates the creation of Co cations in their high oxidation state as active centers, while Ni<sup>2+</sup> contributed to the new active sites with lower activation energy. The synergistic effect of Zn<sup>2+</sup> and Ni<sup>2+</sup> doping can explain the improved physicochemical properties of codoped Co<sub>3</sub>O<sub>4</sub> nanostructures

    Genetic Mechanisms and Multiparameter Logging Identification of Low-Resistivity Oil Pay: A Case Study of the Triassic Chang 6 Member, Zhidan Area, Ordos Basin, China

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    Low-resistivity pay has been found throughout the world. The causes and logging responses of low-resistivity reservoirs are complex and variable. The weak variations in resistivity between the oil pay and the adjacent water pay makes it difficult to identify fluids by resistivity log analysis, which reduces the overall exploration benefit of the oil field. Therefore, it is very important to study the genesis and logging identification technology of the low-resistivity oil pay. In this paper, we first analyzed the core results such as X-ray diffraction, scanning electron microscopy, mercury intrusion, phase permeability, nuclear magnetic resonance, physical properties, electric petrophysical experiment, micro-CT, rock wettability, etc. The results show that: ① the development of low-resistivity oil pays in the studied area is mainly controlled by irreducible water saturation. The complicated pore structure, high gamma ray sandstone, and rock hydrophilicity are the factors that lead to the increase of irreducible water saturation. ② The salinity of formation water and the invasion of drilling fluid also have a certain influence on the variation of reservoir resistivity. ③ In order to magnify the difference between oil and water, sensitive parameters of logging response are extracted according to the controlling factors of low- resistivity reservoir. Then, AC-RILD, SP-PSP, GR*GR*ΔSP-RILD, and (RILM-RILD)/RILDRILD cross-plots, some overlap method, and movable water analysis are used to identify low-resistivity oil pays synthetically. In the case study, the comprehensive application of the above identification method can effectively improve the accuracy of fluid recognition step by step. It provides reference for identifying more low-resistivity reservoirs with similar geological conditions

    Live-dead assay of mMSC in hydrogels a continuous seven days in culture.

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    <p>A, day 1; B, day 3; C, day 5; D, day 7. The living cells were stained with calcein AM (green) and the dead cells were stained with EthD-1 (red). The images of E and F showed top and side views of a 3D cell-gel construct at day 7, respectively.</p

    Extraction, identification and antioxidant activity of proanthocyanidins from <i>Larix gmelinii</i> Bark

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    <div><p>This study was intended to extract and identify the proanthocyanidins from <i>Larix gmelinii</i> bark. Different extraction methods and degreasing methods were investigated. The content of proanthocyanidins, antioxidant activities and FT-IR analysis were used to evaluate and identify these extracts. The ultrasonic-assisted extracts displayed a higher content of proanthocyanidins and antioxidant activity than supercritical carbon dioxide extracts. The defatted extracts displayed a higher content of proanthocyanidins and antioxidant activity than un-defatted extracts. DPPH radical-scavenging capacity of extracts (29.88 μg mL<sup>− 1</sup>) was higher than <i>V</i><sub>C</sub> (36.04 μg mL<sup>− 1</sup>), and the inhibition effect of lipid peroxidation of extracts (15%) was higher than <i>V</i><sub>C</sub> (13%) and <i>V</i><sub>E</sub> (11%). The FT-IR analysis revealed that the main phenolic compounds were almost the same as proanthocyanidin standards.</p></div

    A Protein-Based Hydrogel for <i>In Vitro</i> Expansion of Mesenchymal Stem Cells

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    <div><p>Hydrogels are widely used as scaffolds in tissue engineering because they can provide excellent environments for bioactive components including growth factors and cells. We reported in this study on a physical hydrogel formed by a specific protein-peptide interaction, which could be used for the three dimensional (3D) cell culture of murine mesenchymal stem cells (mMSC). The mMSC kept dividing during the 7-day culture period and the metabolic-active cell number at day 7 was 359% more than that at day 1. This kind of physical hydrogel could be converted to a homogeneous solution by firstly adding an equal volume of culture medium and then pipeting for several times. Therefore, mMSC post culture could be easily separated from cell-gel constructs. We believed that the protein-based hydrogel system in this study could be developed into a promising scaffold for <i>in vitro</i> expansion of stem cells and cell therapy. This work would be in the general interests of researchers in the fields of biomaterials and supramolecular chemistry.</p></div

    Cell proliferation rate of mMSC in gels determined by a CCK-8 assay.

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    <p>One asterisk (*) indicates p value smaller than 0.05 (p<0.05). Three asterisks (***) indicate p value smaller than 0.001 (p<0.001).</p

    A cartoon representation to illustrate the formation of the hydrogels.

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    <p>3D networks of the hydrogels are formed by the specific protein-peptide interaction. The blue, green, red and cyan represent ULD tetramer; the yellow represent TIP-1 protein; the grey thick line represent PEG-peptide; the grey balls represent hexapeptide of WRESAI which can bind with TIP-1.</p
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