66 results match your criteria: "Hunter College and Graduate Center[Affiliation]"

Conditional Values in Quantum Mechanics.

Entropy (Basel)

September 2024

Hunter College and Graduate Center, City University of New York, New York, NY 10065, USA.

We consider the local value of an operator for a given position or momentum and, more generally on the value of another arbitrary observable. We develop a general approach that is based on breaking up Aψ(x) as Aψ(x)ψ(x)=Aψ(x)ψ(x)R+iAψ(x)ψ(x)I where A is the operator whose local value we seek and ψ(x) is the position wave function. We show that the real part is related to the conditional value for a given position and the imaginary part is related to the standard deviation of the conditional value.

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Introduction: The COVID-19 Healthcare Personnel Study (CHPS) was designed to assess adverse short-term and long-term physical and mental health impacts of the coronavirus disease-2019 (COVID-19) pandemic on New York's physicians, nurse practitioners, and physician assistants.

Methods: Online population-based survey. Survey-weighted descriptive results, frequencies, proportions, and means, with 95% confidence intervals (95% CI).

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PrEP Uptake and Discontinuation Among a U.S. National Sample of Transgender Men and Women.

AIDS Behav

April 2021

Department of Community Health and Social Sciences, CUNY Graduate School of Public Health and Health Policy, The CUNY Institute for Implementation Science in Population Health (ISPH), City University of New York, 55 West 125th Street, Room 812, New York, NY, USA.

Pre-exposure prophylaxis (PrEP) has revolutionized HIV prevention efforts by effectively preventing the sexual transmission of HIV infection. Few studies have examined PrEP uptake and discontinuation among transgender individuals who are underserved in HIV prevention efforts. An online U.

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Background: Optimal risk-based survivor health care includes surveillance for late effects and education targeted at reducing or preventing risky health behaviors. Understanding the reasons for a lack of risk-based follow-up care is essential.

Methods: Adult participants from the Childhood Cancer Survivor Study were surveyed about having a cancer-related visit in the past 2 years and the likelihood of having a cancer-related visit in the future.

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Ancient pigs reveal a near-complete genomic turnover following their introduction to Europe.

Proc Natl Acad Sci U S A

August 2019

The Palaeogenomics & Bio-Archaeology Research Network, Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford OX1 3TG, United Kingdom;

Archaeological evidence indicates that pig domestication had begun by ∼10,500 y before the present (BP) in the Near East, and mitochondrial DNA (mtDNA) suggests that pigs arrived in Europe alongside farmers ∼8,500 y BP. A few thousand years after the introduction of Near Eastern pigs into Europe, however, their characteristic mtDNA signature disappeared and was replaced by haplotypes associated with European wild boars. This turnover could be accounted for by substantial gene flow from local European wild boars, although it is also possible that European wild boars were domesticated independently without any genetic contribution from the Near East.

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Identifying the target genes of transcription factors (TFs) is one of the key factors to understand transcriptional regulation. However, our understanding of genome-wide TF targeting profile is limited due to the cost of large scale experiments and intrinsic complexity. Thus, computational prediction methods are useful to predict the unobserved associations.

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Article Synopsis
  • Accurate recognition of offspring is crucial for the fitness of group-living species with parental care, as it helps ensure that parents provide resources to their own young.
  • The common murre, a seabird that lays uniquely colored eggs without nesting, shows individual variability in eggshell appearance, which serves as a way for chicks to signal their identity to parents.
  • This study found that the differences in coloration and maculation of murre eggshells are related to physical and chemical properties, such as shell thickness and pigment concentrations, supporting the idea that unique eggshell features are developed from a limited number of structural mechanisms.
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Article Synopsis
  • Mitochondrial impairment and abnormal calcium levels are linked to Parkinson's disease, leading to reduced ATP and increased calpain activation, which affects the integrity of Parkin, a protein involved in maintaining cellular health.
  • Experiments with mitochondrial inhibitors (such as oligomycin) showed that they cause calpain to cleave Parkin into smaller fragments, while other agents induced different types of cleavage that suggest involvement in apoptosis.
  • Pre-treatment with certain inhibitors can stabilize Parkin and reduce its cleavage, highlighting the potential connection between Parkin phosphorylation and its cleavage due to mitochondrial dysfunction and calcium imbalance, which may play a role in the progression of Parkinson's disease.
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Purpose: There is considerable variation in epidemiology and clinical course of psychotic disorders across social and geographical contexts. To date, very little data are available from low- and middle-income countries. In sub-Saharan Africa, most people with psychoses remain undetected and untreated, partly due to lack of formal health care services.

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Poly(ADP-ribose)polymerase (PARP) inhibitors have emerged as potent antitumor drugs. Here, we describe the intrinsic fluorescence properties of the clinically approved PARP inhibitor rucaparib and its potential to directly measure drug distribution and target engagement-a critical factor for understanding drug action and improving efficacy. We characterized the photophysical properties of rucaparib and determined its quantum yield and lifetime.

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PrEP Stigma: Implicit and Explicit Drivers of Disparity.

Curr HIV/AIDS Rep

April 2018

Department of Psychology, Hunter College and Graduate Center of the City University of New York (CUNY), 695 Park Avenue, New York, NY, 10065, USA.

Purpose Of Review: Despite its promise as an HIV prevention strategy, PrEP uptake remains slow, especially among highest priority populations. One factor that may be impeding implementation and driving disparities is PrEP-related stigma. This paper reviews the role of PrEP-related stigma in PrEP access, adherence, and persistence and examines its antecedents and consequences.

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Globally, people living with HIV (PLWH) are at remarkably high risk for developing chronic comorbidities. While exercise and healthy eating reduce and mitigate chronic comorbidites, PLWH like many others, often fail to engage in recommended levels. We qualitatively examined the perspectives and contextual drivers of diet and exercise reported by PLWH and their health care providers.

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The biology of color.

Science

August 2017

Department of Wildlife, Fish and Conservation Biology and Center for Population Biology, University of California, Davis, CA 95616, USA.

Article Synopsis
  • Coloration influences how organisms interact with their environments, playing key roles in social signaling, defense mechanisms against predators, and protection from various environmental hazards.
  • Recent methodological advancements are enhancing our understanding of the mechanisms behind color production and perception in animals, while also allowing for extensive and noninvasive global measurements of color.
  • This text outlines the progress made in the study of coloration and highlights emerging challenges within this interdisciplinary research area.
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The coevolutionary interactions between avian brood parasites and their hosts provide a powerful system for investigating the diversity of animal coloration. Specifically, reciprocal selection pressure applied by hosts and brood parasites can give rise to novel forms and functions of animal coloration, which largely differ from those that arise when selection is imposed by predators or mates. In the study of animal colours, avian brood parasite-host dynamics therefore invite special consideration.

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This study investigates socio-demographic characteristics and resilience and depressive symptoms among Korean Americans (KAs) with traumatic life experiences. Community-residing 285 KAs living in New York City and Teaneck, New Jersey completed questionnaires measuring traumatic life experiences, depressive symptoms, and resilience. Descriptive statistics, Pearson's correlations, and two-step hierarchical multiple regression analyses were conducted.

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Utilizing the power of Cerenkov light with nanotechnology.

Nat Nanotechnol

February 2017

Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA.

The characteristic blue glow of Cerenkov luminescence (CL) arises from the interaction between a charged particle travelling faster than the phase velocity of light and a dielectric medium, such as water or tissue. As CL emanates from a variety of sources, such as cosmic events, particle accelerators, nuclear reactors and clinical radionuclides, it has been used in applications such as particle detection, dosimetry, and medical imaging and therapy. The combination of CL and nanoparticles for biomedicine has improved diagnosis and therapy, especially in oncological research.

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The DNA damage response involves coordinated control of gene expression and DNA repair. Using deep sequencing, we found widespread changes of alternative cleavage and polyadenylation site usage on ultraviolet-treatment in mammalian cells. Alternative cleavage and polyadenylation regulation in the 3' untranslated region is substantial, leading to both shortening and lengthening of 3' untranslated regions of genes.

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Gender and Impulsivity: Effects on Cue-Induced Alcohol Craving.

Alcohol Clin Exp Res

May 2016

Department of Psychology , Hunter College and Graduate Center, City University of New York, New York, New York.

Background: Numerous studies have demonstrated that trait impulsivity is linked to increased risk of developing alcohol-use disorders and other substance abuse. Impulsivity has also been shown in some studies to potentiate cue-induced drug cravings. Despite considerable evidence of gender differences in impulsivity and drug craving among individuals suffering from alcohol dependence and other drug use, little research has focused on these processes in healthy young men and women who may be at risk for developing alcohol-use disorders.

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Nanoparticles and radiotracers: advances toward radionanomedicine.

Wiley Interdiscip Rev Nanomed Nanobiotechnol

November 2016

Department of Pharmacology, Weill Cornell Medical College, New York, NY, USA.

In this study, we cover the convergence of radiochemistry for imaging and therapy with advances in nanoparticle (NP) design for biomedical applications. We first explore NP properties relevant for therapy and theranostics and emphasize the need for biocompatibility. We then explore radionuclide-imaging modalities such as positron emission tomography (PET), single-photon emission computed tomography (SPECT), and Cerenkov luminescence (CL) with examples utilizing radiolabeled NP for imaging.

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Background: Asian American women are more prone to suffer from depression compared to their non-Asian American counterparts and have lower rates of seeking mental healthcare services due to lack of available culturally appropriate therapies. Two prior studies of a culturally tailored therapeutic intervention called LogoAutobiography were helpful in treating depressed Korean American women. The LogoAutobiography program was revised to enhance its efficacy not only for depressive symptoms and purpose in life but also to increase coping strategies.

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Novel multifunctional platforms are needed for oncology in order to assist physicians during surgery and chemotherapy. In the present study, we show that polymeric nanobeacons, consisting of the glucose-based polymer dextran, can be used to guide surgery and improve drug delivery. For imaging, the nanobeacons stably retained the positron emitter 89-zirconium and the MRI contrast agent gadolinium, without the need of a chelator.

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Porphyrinoids are robust heterocyclic dyes studied extensively for their applications in medicine and as photonic materials because of their tunable photophysical properties, diverse means of modifying the periphery, and the ability to chelate most transition metals. Commercial applications include their use as phthalocyanine dyes in optical discs, porphyrins in photodynamic therapy, and as oxygen sensors. Most applications of these dyes require exocyclic moieties to improve solubility, target diseases, modulate photophysical properties, or direct the self-organization into architectures with desired photonic properties.

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PARN deadenylase is involved in miRNA-dependent degradation of TP53 mRNA in mammalian cells.

Nucleic Acids Res

December 2015

Chemistry Department, Belfer Research Building, Hunter College and Graduate Center, City University of New York, New York, NY 10021, USA

mRNA deadenylation is under the control of cis-acting regulatory elements, which include AU-rich elements (AREs) and microRNA (miRNA) targeting sites, within the 3' untranslated region (3' UTRs) of eukaryotic mRNAs. Deadenylases promote miRNA-induced mRNA decay through their interaction with miRNA-induced silencing complex (miRISC). However, the role of poly(A) specific ribonuclease (PARN) deadenylase in miRNA-dependent mRNA degradation has not been elucidated.

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A Key concept in Magnesium Secondary Battery Electrolytes.

ChemSusChem

September 2015

Department of Chemical Sciences, University of Padua, Via Marzolo 1, 35131 Padua (Italy).

Article Synopsis
  • A major challenge in developing practical magnesium-based energy storage is finding safe and stable electrolytes.
  • Researchers introduced high-performance electrolytes made from 1-ethyl-3-methylimidazolium chloride (EMImCl) combined with AlCl3 and δ-MgCl2, revealing complex thermal behaviors based on their salt content.
  • Advanced electronic structure calculations helped to understand these electrolytes' properties, leading to impressive performance in magnesium anode cells, which showed a capacity of 80 mA h g(-1) when discharged at high rates.
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Introduction: Poor inhibitory control has been shown to be an important predictor of relapse to a number of drugs, including nicotine. Indeed, smokers who exhibit higher levels of impulsivity are thought to have impaired regulation of urges to smoke, and previous research has suggested that impulsivity may moderate cue-induced cigarette cravings. To that end, we conducted a study to evaluate the interplay between failed smoking cessation, cue-induced craving, and impulsivity.

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