807 research outputs found
Expectations of Store Personnel Managers Regarding Appropriate Dress for Female Retail Buyers
Clothing, Textiles and Merchandisin
Dengue related Osteonecrosis of the Maxillary Dento-Alveolar Bone
Dengue is a mosquito transmitted flaviviral infection which can give rise to severe haemorrhage (dengue haemorrhagic fever/DHF) and with capillary leakage induces hypovolemic shock (dengue shock syndrome/DSS). Although dengue symptoms and complications have been known for many decades there has only been one documented case of osteonecrosis of the maxilla which was treated by excision of the necrotic bone. In this case of dengue infection, extensive maxillary osteonecrosis and minimal root resorption appeared to follow factitious injury with a toothpick but resolved with nonsurgical management
Full genome re-sequencing reveals a novel circadian clock mutation in Arabidopsis
Map based cloning in Arabidopsis thaliana can be a difficult and time-consuming process, specifically if the phenotype is subtle and scoring labour intensive. Here, we have re-sequenced the 120-Mb genome of a novel Arabidopsis clock mutant early bird (ebi-1) in Wassilewskija (Ws-2). We demonstrate the utility of sequencing a backcrossed line in limiting the number of SNPs considered. We identify a SNP in the gene AtNFXL-2 as the likely cause of the ebi-1 phenotype
Return of the quantum cosmic censor
The influential theorems of Hawking and Penrose demonstrate that spacetime
singularities are ubiquitous features of general relativity, Einstein's theory
of gravity. The utility of classical general relativity in describing
gravitational phenomena is maintained by the cosmic censorship principle. This
conjecture, whose validity is still one of the most important open questions in
general relativity, asserts that the undesirable spacetime singularities are
always hidden inside of black holes. In this Letter we reanalyze extreme
situations which have been considered as counterexamples to the cosmic
censorship hypothesis. In particular, we consider the absorption of fermion
particles by a spinning black hole. Ignoring quantum effects may lead one to
conclude that an incident fermion wave may over spin the black hole, thereby
exposing its inner singularity to distant observers. However, we show that when
quantum effects are properly taken into account, the integrity of the
black-hole event horizon is irrefutable. This observation suggests that the
cosmic censorship principle is intrinsically a quantum phenomena.Comment: 5 page
Correlation of tooth size and body size in living hominoid primates, with a note on relative brain size in Aegyptopithecus and Proconsul
Second molar length and body weight are used to test the correlation between tooth size and body size in living Hominoidea. These variates are highly correlated ( r = 0.942, p <0.001), indicating that tooth size can be used in dentally unspecialized fossil hominoids as one method of predicting the average body weight of species. Based on tooth size, the average body weight of Aegyptopithecus zeuxis is estimated to have been between 4.5 and 7.5 kg, which is corroborated by known cranial and postcranial elements. Using Radinsky's estimates of brain size, the encephalization quotient (EQ) for Aegyptopithecus was between 0.65 and 1.04. A similar analysis for Proconsul africanus yields a body weight between 16 and 34 kg, and an EQ between 1.19 and 1.96.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37578/1/1330470308_ftp.pd
The Influence of Chemical Modification on Linker Rotational Dynamics in MetalâOrganic Frameworks
The robust synthetic flexibility of metalâorganic frameworks (MOFs) offers a promising class of tailorable materials, for which the ability to tune specific physicochemical properties is highly desired. This is achievable only through a thorough description of the consequences for chemical manipulations both in structure and dynamics. Magic angle spinning solidâstate NMR spectroscopy offers many modalities in this pursuit, particularly for dynamic studies. Herein, we employ a separatedâlocalâfield NMR approach to show how specific intraframework chemical modifications to MOF UiOâ66 heavily modulate the dynamic evolution of the organic ring moiety over several orders of magnitude.Ringrotationen in MOFs wurden in FestkörperâNMRâExperimenten unter Probenrotation um den magischen Winkel durch dipolare Dephasierung ĂŒber die Rotorperiode detektiert. Informationen zur Dynamik in Metallâorganischen GerĂŒsten sind wichtig, weil die Geschwindigkeit der Rotationsbewegung des Linkers die Sorptionsâ und Trenneigenschaften von MOFs beeinflusst.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/144665/1/ange201805004_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/144665/2/ange201805004-sup-0001-misc_information.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/144665/3/ange201805004.pd
The impact of timing of maternal influenza immunization on infant antibody levels at birth
Pregnant women and infants are at an increased risk of severe disease after influenza infection. Maternal immunization is a potent tool to protect both these atârisk groups. While the primary aim of maternal influenza vaccination is to protect the mother, a secondary benefit is the transfer of protective antibodies to the infant. A recent study using the tetanus, diphtheria and acellular pertussis (Tdap) vaccine indicated that children born to mothers immunized in the second trimester of pregnancy had the highest antibody titres compared to children immunized in the third trimester. The aim of the current study was to investigate how the timing of maternal influenza immunization impacts infant antibody levels at birth. Antibody titres were assessed in maternal and cord blood samples by both immunoglobulin (Ig)Gâbinding enzymeâlinked immunosorbent assay (ELISA) and haemagglutination inhibition assay (HAI). Antibody titres to the H1N1 component were significantly higher in infants born to mothers vaccinated in either the second or third trimesters than infants born to unvaccinated mothers. HAI levels in the infant were significantly lower when maternal immunization was performed less than 4 weeks before birth. These studies confirm that immunization during pregnancy increases the antibody titre in infants. Importantly, antibody levels in cord blood were significantly higher when the mother was vaccinated in either trimesters 2 or 3, although titres were significantly lower if the mother was immunized less than 4 weeks before birth. Based on these data, seasonal influenza vaccination should continue to be given in pregnancy as soon as it becomes available
Audible Image Description as an Accommodation in Statewide Assessments for Students with Visual and Print Disabilities.
Introduction:Although image description has been identified as an accommodation for presentations conducted in the classroom, only a few U.S. states have approved it for use in high-stakes assessments. This study examined the use of audible image description as an assessment accommodation for students with visual and print disabilities by investigating student comprehension under multiple conditions. Methods: Students in three western states in grades three through eight who had visual (n= 117) or print (n= 178) disabilities participated in an abbreviated test constructed of retired assessment questions in English language arts, mathematics, and science, that were aligned with each state's instructional standards, under conditions with and without standardized description of graphic images. The study used a within-subjects block design to collect and compare comprehension data under conditions where audible image description was both used and not used in an abbreviated test. Results: Results indicated that students who read braille were more likely to
respond correctly under the audible image description condition, and students
with visual and print disabilities who used print were equally likely to respond
correctly regardless of condition. Discussion: Braille readers were more likely to
obtain a correct answer when audible image description accompanied the question.
Audible image description did not affect the likelihood of a correct response
from students with print disabilities or students with visual disabilities who read
print. Implications for practitioners: Audible image description is an accommodation
that may help braille readers perform better on tests. Although the
Partnership for Assessment of Readiness for College and Careers (PARCC) and
Smarter Balanced consortia are taking steps to include image (or picture) descriptions
in their assessment accommodations, teachers may want to develop a standard method for describing images and familiarize their braille readers to the strategy by
including it in instruction and in classroom tests. Readers are referred to the National
Center on Accessible Mediaâs online guidelines for image description
What Constitutes an Explanation in Biology?
One of biology's fundamental aims is to generate understanding of the living world aroundâand withinâus. In this chapter, I aim to provide a relatively nonpartisan discussion of the nature of explanation in biology, grounded in widely shared philosophical views about scientific explanation. But this discussion also reflects what I think is important for philosophers and biologists alike to appreciate about successful scientific explanations, so some points will be controversial, at least among philosophers. I make three main points: (1) causal relationships and broad patterns have often been granted importance to scientific explanations, and they are in fact both important; (2) some explanations in biology cite the components of or processes in systems that account for the systemsâ features, whereas other explanations feature large-scale or structural causes that influence a system; and (3) there can be multiple different explanations of a given biological phenomenon, explanations that respond to different research aims and can thus be compatible with one another even when they may seem to disagree
Immunoglobulin E in health and disease
The discovery of immunoglobulin E (IgE) was a breakthrough in the field of Allergy and Immunology. Our understanding of mechanisms of allergic reactions and the role of IgE in these disorders has paralleled to the discovery of treatment modalities for patients with allergy. Apart from allergic diseases, IgE is involved in pathogenesis of other disorders. Much controversy exists about the control of total IgE (tIgE) levels and allergen-specific IgE (sIgE) profiles in allergic individuals. This review aims at giving a comprehensive overview of IgE molecule and discussing the issues related to its importance in clinical setting
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