891 research outputs found
A WFC3 Grism Emission Line Redshift Catalog in the GOODS-South Field
We combine HST/WFC3 imaging and G141 grism observations from the CANDELS and
3D-HST surveys to produce a catalog of grism spectroscopic redshifts for
galaxies in the CANDELS/GOODS-South field. The WFC3/G141 grism spectra cover a
wavelength range of 1.1<lambda<1.7 microns with a resolving power of R~130 for
point sources, thus providing rest-frame optical spectra for galaxies out to
z~3.5. The catalog is selected in the H-band (F160W) and includes both galaxies
with and without previously published spectroscopic redshifts. Grism spectra
are extracted for all H-band detected galaxies with H<24 and a CANDELS
photometric redshift z_phot > 0.6. The resulting spectra are visually inspected
to identify emission lines and redshifts are determined using cross-correlation
with empirical spectral templates. To establish the accuracy of our redshifts,
we compare our results against high-quality spectroscopic redshifts from the
literature. Using a sample of 411 control galaxies, this analysis yields a
precision of sigma_NMAD=0.0028 for the grism-derived redshifts, which is
consistent with the accuracy reported by the 3D-HST team. Our final catalog
covers an area of 153 square arcmin and contains 1019 redshifts for galaxies in
GOODS-S. Roughly 60% (608/1019) of these redshifts are for galaxies with no
previously published spectroscopic redshift. These new redshifts span a range
of 0.677 < z < 3.456 and have a median redshift of z=1.282. The catalog
contains a total of 234 new redshifts for galaxies at z>1.5. In addition, we
present 20 galaxy pair candidates identified for the first time using the grism
redshifts in our catalog, including four new galaxy pairs at z~2, nearly
doubling the number of such pairs previously identified.Comment: 25 Pages, 9 Figures, submitted to A
Rituximab Maintenance for the Treatment of Patients With Follicular Lymphoma: An Updated Systematic Review and Meta-analysis of Randomized Trials
In a previous systematic review and meta-analysis of five randomized controlled trials comparing rituximab maintenance with no maintenance (observation or rituximab at progression) for patients with follicular lymphoma, we reported that rituximab maintenance treatment improved the overall survival of patients. In this study, we did a similar search of the electronic databases updated through December 31, 2010, and included nine trials and 2586 follicular lymphoma patients. Hazard ratios (HRs) for time-to-event data were estimated and pooled using the inverse variance method. Risk ratios for dichotomous data were pooled using a fixed effect model. Patients treated with rituximab maintenance had improved overall survival (pooled HR of death = 0.76, 95% confidence interval [CI] = 0.62 to 0.92) compared with patients in the no maintenance group. Patients with refractory or relapsed (ie, previously treated) follicular lymphoma treated with rituximab maintenance had improved overall survival (pooled HR of death = 0.72, 95% CI = 0.57 to 0.91), whereas previously untreated patients had no survival benefit (pooled HR of death = 0.86, 95% CI = 0.60 to 1.25). The rate of infection-related adverse events was higher in the rituximab maintenance group (pooled risk ratio = 1.67, 95% CI = 1.40 to 2.00). These results further support the use of rituximab maintenance in the standard of care for refractory or relapsed follicular lymphom
The competencies of registered nurses working in care homes: a modified Delphi study
BACKGROUND: Registered Nurses (RNs) working in UK care homes receive most of their training in acute hospitals. At present the role of care home nursing is underdeveloped and it is seen as a low status career. We describe here research to define core competencies for RNs working in UK care homes.
METHODS: A two-stage process was adopted. A systematic literature review and focus groups with stakeholders provided an initial list of competencies. The competency list was modified over three rounds of a Delphi process with a multi-disciplinary expert panel of 28 members.
RESULTS: Twenty-two competencies entered the consensus process, all competencies were amended and six split. Thirty-one competencies were scored in round two, eight were agreed as essential, one competency was split into two. Twenty-four competencies were submitted for scoring in round three. In total, 22 competencies were agreed as essential for RNs working in care homes. A further ten competencies did not reach consensus.
CONCLUSION: The output of this study is an expert-consensus list of competencies for RNs working in care homes. This would be a firm basis on which to build a curriculum for this staff group
アジア太平洋のディアスポラ、および脱植民地主義的語りにおける記憶と歴史の定位
本稿では、抵抗と解放への可能性を生じさせる「場」としての記憶と歴史に注目しつつ、アジア太平洋地域の反主導権力的文学テクストについて考察する。アジア太平洋地域の異なる地理的場所において、過去数十年の異なる時期に書かれたテクストを分析していくが、特に21 世紀における昨今の動きの中で有利な位置にあるアジア系アメリカ文学・文化が、いかに合衆国の文学研究をさらなる脱中心化へと導く方法として有効かということについて、合衆国の昨今の問題意識のもとに分析していく。その覇権的な作用が多岐にわたる決定論を無効にするひとつの方法は、支配的な歴史的語り^^ナラティヴに埋もれた、場所や人々の物語^^ストーリーを掘り起こすことである。私たちが過去をどのように認知し、その知見とどのように向き合うかは、日常生活的に課せられた現在の責務(例えば、共同体意識や共通の目的のもとに、政治的に機能する社会を築くことなど)と関わっており、私たちが脱植民地化の流れの中で過去や現在を刷新していくことは、そうした共同体形成の作業に影響を与える。必要なのは、個人的な記憶と共同体や国家の集合的記憶の両方を再構築することであり、それによって、歴史の創造過程が、主導権を掌握する勢力との交渉や闘争の場そのものとなるのである。本稿は、スーチェン・クリスティン・リム(シンガポール)、マリア・N. ヌグ(香港マカオ)、R. ザモラ・リンマーク(ハワイ)の著作やラッセル・リオン(ロサンジェルス)の詩などを検証することにより、脱植民地主義的試みにおける記憶や集合的歴史の問題点に迫る。これらの「物語^^ストーリー」は、アジア太平洋地域の人々がどのように西洋の植民地主義と関わってきたかという経験のありようを垣間見せてくれる。また、これらの語りは、実際にある多様な奴隷状態から登場人物たちがどのように自らを解放へと導いていったかについても明らかにする。読者は、フィクションとしてのこれらの語りを、過去を「再追悼」する行為であると認識すると同時に、広大な脱植民地化の動きの中で人々をつなげる反主導権的ネットワークの生じる場所を、時間的・空間的な多面性、その予想不可能性、流動性、順応性といった力を備えた「場」として位置づける。本論ではまた、そのポストモダン的語りによって脱植民地化の文学の中でイコン的な存在となっているテレーサ・ハッキョン・チャの『ディクテ』についても論じ、結びとして、これまで英訳されることのなかった沖縄文学の作品を含む MANOA の沖縄文学特集号についても触れる。論文http://purl.org/coar/resource_type/c_650
The ADAMTS (A Disintegrin and Metalloproteinase with Thrombospondin motifs) family
The ADAMTS (A Disintegrin and Metalloproteinase with Thrombospondin motifs) enzymes are secreted, multi-domain matrix-associated zinc metalloendopeptidases that have diverse roles in tissue morphogenesis and patho-physiological remodeling, in inflammation and in vascular biology. The human family includes 19 members that can be sub-grouped on the basis of their known substrates, namely the aggrecanases or proteoglycanases (ADAMTS1, 4, 5, 8, 9, 15 and 20), the procollagen N-propeptidases (ADAMTS2, 3 and 14), the cartilage oligomeric matrix protein-cleaving enzymes (ADAMTS7 and 12), the von-Willebrand Factor proteinase (ADAMTS13) and a group of orphan enzymes (ADAMTS6, 10, 16, 17, 18 and 19). Control of the structure and function of the extracellular matrix (ECM) is a central theme of the biology of the ADAMTS, as exemplified by the actions of the procollagen-N-propeptidases in collagen fibril assembly and of the aggrecanases in the cleavage or modification of ECM proteoglycans. Defects in certain family members give rise to inherited genetic disorders, while the aberrant expression or function of others is associated with arthritis, cancer and cardiovascular disease. In particular, ADAMTS4 and 5 have emerged as therapeutic targets in arthritis. Multiple ADAMTSs from different sub-groupings exert either positive or negative effects on tumorigenesis and metastasis, with both metalloproteinase-dependent and -independent actions known to occur. The basic ADAMTS structure comprises a metalloproteinase catalytic domain and a carboxy-terminal ancillary domain, the latter determining substrate specificity and the localization of the protease and its interaction partners; ancillary domains probably also have independent biological functions. Focusing primarily on the aggrecanases and proteoglycanases, this review provides a perspective on the evolution of the ADAMTS family, their links with developmental and disease mechanisms, and key questions for the future
Functionalisation of Ti6Al4V components fabricated using selective laser melting with a bioactive compound
Surface modification of an implant with a biomolecule is used to improve its biocompatibility and to reduce post-implant complications. In this study, a novel approach has been used to functionalise phosphonic acid monolayers with a drug. Ti6Al4V components fabricated using selective laser melting (SLM) were functionalised with Paracetamol (a pharmaceutically relevant biomolecule) using phosphonic acid based self-assembled monolayers (SAMs). The attachment, stability of the monolayers on the SLM fabricated surface and functionalisation of SAMs with Paracetamol were studied using X-ray photoelectron spectroscopy (XPS) and surface wettability measurements. The obtained results confirmed that SAMs were stable on the Ti6Al4V surface for over four weeks and then began to desorb from the surface. The reaction used to functionalise the phosphonic acid monolayers with Paracetamol was noted to be successful. Thus, the proposed method has the potential to immobilise drugs/proteins to SAM coated surfaces and improve their biocompatibility and reduce post-implant complications
Reconsidering the Barefoot Doctor Programme
This paper examines the widely acclaimed Barefoot Doctor campaign in China. The Barefoot Doctor Campaign has come to symbolize the success of Chinese health care to the extent that it has become a model for WHO public health strategy. Yet little has been done to understand how or whether it worked on the ground and what difficulties and contradictions emerged in its implementation. Using previously unexplored party archives as well as newly collected oral interviews, this paper moves away from a narrow focus on party politics and policy formulation by examining the reality of health care at the local level and the challenges faced by local authorities and individuals as the campaigns evolved
(Not) being at home: Hsu Ming Teo's Behind the Moon (2005) and Michelle de Kretser's Questions of Travel (2012)
This article examines some interventions of Asian Australian writing into the debate over multiculturalism, and the shift from negative stereotyping of Asian migrants, to reification of racial divisions and propagation of a masked racism, to the creation of new alignments and the revival of pre-existing affiliations by migrant and second generation subjects. It compares the practices of not-at-homeness by Asian migrants and their descendants and white Australians in Hsu Ming Teo’s Behind the Moon with those of a Sri Lankan refugee and a white Australian traveller in Michelle de Kretser’s Questions of Travel. The changing concepts of belonging in the novels show a realignment of core and periphery relations within the nation state under the pressures of multiculturalism and globalization: where home is and how it is configured are questions as important for white Australians whose sense of territory is challenged as they are for Asian migrants who seek to establish a new belonging
Bone morphogenetic protein-2/4 and bone morphogenetic protein receptor type IA expression in metastatic and nonmetastatic oral squamous cell carcinoma
Purpose
The study aimed to analyze the expression of bone morphogenetic protein-2/4 (BMP-2/4) and its receptor BMPR-IA (BMP receptor type IA) in metastatic and nonmetastatic oral squamous cell carcinoma (OSCC) and its implications for disease prognosis.
Materials and methods
The experimental group included 16 cases of OSCC without metastasis and 7 cases of OSCC with metastasis. The presence or absence of nodal metastasis was used as a parameter for the evaluation of disease prognosis. Ten cases of oral fibroepithelial hyperplasia were selected as the control group. The expression of BMP-2/4 and BMPR-IA was analyzed by immunohistochemistry.
Results
In the experimental group with metastasis, strong expression of BMP-2/4 was observed in most cases (71.4%), whereas BMPR-IA exhibited weak expression (85.7%). In the experimental group without metastasis, there was strong expression of BMP-2/4 (62.5%) and BMPR-IA (100%). A significant association was observed between the prognosis of OSCC and the intensity of BMP-2/4 staining (P = .002). Weak immunoreactivity to BMP-2/4 and BMPR-IA was observed in all control specimens.
Conclusions
The results suggest that strong expression of BMP-2/4, associated with low expression of BMPR-IA, observed in metastatic OSCC has a prognostic value, with the loss of responsiveness to BMPs through the loss of expression of their receptors being indicative of the development of metastasis
Local IL-17 Production Exerts a Protective Role in Murine Experimental Glomerulonephritis
IL-17 is a pro-inflammatory cytokine implicated in the pathogenesis of glomerulonephritis and IL-17 deficient mice are protected from nephrotoxic nephritis. However, a regulatory role for IL-17 has recently emerged. We describe a novel protective function for IL-17 in the kidney. Bone marrow chimeras were created using wild-type and IL-17 deficient mice and nephrotoxic nephritis was induced. IL-17 deficient hosts transplanted with wild-type bone marrow had worse disease by all indices compared to wild-type to wild-type bone marrow transplants (serum urea p<0.05; glomerular thrombosis p<0.05; tubular damage p<0.01), suggesting that in wild-type mice, IL-17 production by renal cells resistant to radiation is protective. IL-17 deficient mice transplanted with wild-type bone marrow also had a comparatively altered renal phenotype, with significant differences in renal cytokines (IL-10 p<0.01; IL-1β p<0.001; IL-23 p<0.01), and macrophage phenotype (expression of mannose receptor p<0.05; inducible nitric oxide synthase p<0.001). Finally we show that renal mast cells are resistant to radiation and produce IL-17, suggesting they are potential local mediators of disease protection. This is a novel role for intrinsic cells in the kidney that are radio-resistant and produce IL-17 to mediate protection in nephrotoxic nephritis. This has clinical significance as IL-17 blockade is being trialled as a therapeutic strategy in some autoimmune diseases
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