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At least 469 records · Page 26Linked to original sources
PubMed2006

Cowpea mosaic virus for material fabrication: addressable carboxylate groups on a programmable nanoscaffold.

For the first time, decoration of surface-exposed carboxylate groups on Cowpea mosaic virus particles is reported, thus increasing the number and types of addressable surface groups on this nanoscaffold. First, the addressabilty of carboxylates was demonstrated using a carboxylate-selective fluorescent dye, N-cyclohexyl-N'-(4-(dimethylamino)naphthyl)carbodiimide. Second, it was shown that the virions can be decorated with approximately 180 redox active, methyl(aminopropyl)viologen moieties by coupling to the surface carboxylates. The display of multiple redox centers on the virus particle surface may lead to the development of novel electron-transfer mediators in redox catalysis, to biosensors, and to nanoelectronic devices such as molecular batteries.

Biomedical Engineering↗
PubMed2006

Redox-active biomolecular architectures and self-assembled monolayers based on a cyclodecapeptide regioselectively addressable functional template.

A nanometer scale redox active biomolecular architecture has been successfully synthesized through an efficient chemoselective oxime based coupling between ferrocenyl groups and a regioselectively addressable cyclodecapeptide. This molecular tool exhibits electronic, structural, and chemical properties driven by the biomimetic recognition activity of the polypeptide skeleton associated to the well-defined electrochemical activity of metallocenyl probes. Biomolecular materials obtained by confinement of the redox cyclopeptide in self-assembled monolayers on gold surfaces shows efficient through-bond electron transfer from the ferrocenes to the electrode surface via the peptidic backbone, as well as markedly improved sensing properties toward anionic species in organic electrolyte, as compared to those observed in homogeneous solution.

Cyclization↗
PubMed2007

Diazonium-functionalized horseradish peroxidase immobilized via addressable electrodeposition: direct electron transfer and electrochemical detection.

A simple one-step procedure is introduced for the preparation of diazonium-enzyme adducts. The direct electrically addressable deposition of diazonium-modified enzymes is examined for electrochemical sensor applications. The deposition of diazonium-horseradish peroxidase leads to the direct electron transfer between the enzyme and electrode exhibiting a heterogeneous rate constant, ks, of 10.3 +/- 0.7 s-1 and a DeltaEp of 8 mV (v = 150 mV/s). The large ks and low DeltaEp are attributed to the intimate contact between enzyme and electrode attached by one to three phenyl molecules. Such an electrode shows high nonmediated catalytic activity toward H2O2 reduction. Future generations of arrayed electrochemical sensors and studies of direct electron transfer of enzymes can benefit from protein electrodes prepared by this method.

Chemistry, Physical↗
PubMed2006

Addressable molecular tweezers for DNA-templated coupling reactions.

Here we report the construction of fully addressable DNA-based molecular tweezers to actuate coupling reactions in a programmable fashion. Three tweezers, each bearing two coupling reactants, are self-assembled on a linear DNA track. A fourth tweezer floating freely in solution can be brought to any one of the tweezers and close them by the addition of a unique pair of "fuel" DNA strands. The coupling reactions happen when the tweezers are closed, and this can be controlled sequentially from one tweezer to another. A molecular device of this kind would not only enable programmable chemical reactions but also allow distance-dependent control of biomolecular interactions.

DNA↗
PubMed2006

Building addressable libraries: site selective coumarin synthesis and the "real-time" signaling of antibody-coumarin binding.

[reaction: see text] The feasibility of using active semiconductor chips containing addressable arrays of microelectrodes for the "real-time" monitoring of biologically relevant binding events has been demonstrated by detecting the binding of a coumarin substrate by an anticoumarin antibody. The coumarin substrate was synthesized proximal to predetermined electrodes on the chip with the use of a Pd(II) reagent that was itself generated by using the selected electrodes. Once the coumarin was synthesized, its binding to the anticoumarin antibody was detected by monitoring the current associated with a ferrocene-ferrocinium ion redox cycle that was established between the electrodes on the chip and a remote auxiliary electrode.

Antibodies↗
PubMed1997

A hybrid approach for addressing ring flexibility in 3D database searching.

A hybrid approach for flexible 3D database searching is presented that addresses the problem of ring flexibility. It combines the explicit storage of up to 25 multiple conformations of rings, with up to eight atoms, generated by the 3D structure generator CORINA with the power of a torsional fitting technique implemented in the 3D database system UNITY. A comparison with the original UNITY approach, using a database with about 130,000 entries and five different pharmacophore queries, was performed. The hybrid approach scored, on an average, 10-20% more hits than the reference run. Moreover, specific problems with unrealistic hit geometries produced by the original approach can be excluded. In addition, the influence of the maximum number of ring conformations per molecule was investigated. An optimal number of 10 conformations per molecule is recommended.

Anti-Arrhythmia Agents↗
PubMed2002

The corporate impact of addressing social issues: a financial case study of a project in Peru.

Large, multinational resource development projects can affect many aspects, including social, economic and ecological realities, in the regions where they operate. Social and environmental issues that are usually ignored in such projects are increasingly affecting the financial future of multinational corporations in negative ways. In this article, we advance the argument that corporations can successfully manage these issues and that if they choose to view these management efforts as an investment rather than an expense, they may well acquire a competitive advantage over companies that do not. We describe as a case study the Camisea natural gas and condensates development project in Peru, operated by Shell Prospecting and Development Peru (SPDP). Camisea is one of the first projects anywhere in the world to conduct a detailed analysis of key industry-related social issues and the processes, required investment and financial impact of managing them. The Camisea example supports the argument that addressing social and environmental concerns makes financial sense. In present value terms, the benefit of managing these concerns was expected to surpass the cost investment by approximately US$50 million.

Conservation of Energy Resources↗
PubMed2002

Preparing social workers to address HIV/AIDS prevention and detection: implications for professional training and education.

The social work profession remains an untapped resource within the community for addressing HIV/AIDS prevention and early detection. This study investigated social workers' knowledge and practices relating to HIV prevention education, risk assessment, and case finding. A six page questionnaire was mailed to a random sample of 600 licensed social workers and licensed clinical social workers in Illinois. The sample was drawn from a list provided by the state department of professional regulation, stratified by geographic location. The final response rate for the survey was 51.3% (N = 308). Social work knowledge concerning HIV and AIDS was significantly related to the variables of age, geographic location, and practice setting. Respondents scored lower on knowledge items pertaining to their ability to perform a comprehensive sexual and drug risk assessment and to appropriately advise clients on HIV antibody testing. Most of the social workers in the sample provided minimal to no HIV-related services in their clinical practice. HIV-related behaviors were also significantly related to the variables of age, geographic location, and practice setting. Multiple logistic regression was used to test whether prior HIV/AIDS training predicted the presence of HIV-related practice behaviors, controlling for potential confounding factors. Both prior HIV-related training and education and prior work experience with HIV-infected clients were statistically significant and independent predictors of current HIV-related practice behaviors reported by social workers.

Acquired Immunodeficiency Syndrome↗
PubMed1998

Evaluation of an innovative program to address the health and social service needs of drug-using women with or at risk for HIV infection.

Drug-using women with or at risk for HIV infection have many competing unmet needs, especially for social services, drug treatment, and medical care. High-risk drug-using women were recruited through street outreach, at needle exchange sites, a prison, and local community based organizations in New Haven, Connecticut for a study of the service needs of out-of-treatment drug users and the ability of an interactive case management intervention (ICM) to address those needs. These women were administered baseline and follow-up interviews to identify their health and social service needs and the degree to which these needs were resolved. The women who chose to enroll in the interactive case management intervention (n = 38) did not differ demographically nor in their HIV risk behaviors from those not receiving case management (n = 73). Provision of ICM was most successful in meeting needs for supportive mental health counseling, basic services, and long term housing. The impact of interactive case management was less evident for the acquisition of medical and dental services, which were accessed comparably by women not receiving the intervention. Overall, the women who enrolled in the ICM intervention showed a significant decrease in the number of unmet service needs as compared to those who did not enroll. Multiple contacts were required by the case manager to establish trust and to resolve the unmet service needs of these high-risk women. Women with or at risk for HIV infection can be effectively engaged in an ICM intervention in order to meet their multiple unmet service needs, although such interventions are time-and-labor intensive.

Adult↗
PubMed1998

Addressing misallocation of variance in principal components analysis of event-related potentials.

Interpretation of evoked response potentials is complicated by the extensive superposition of multiple electrical events. The most common approach to disentangling these features is principal components analysis (PCA). Critics have demonstrated a number of caveats that complicate interpretation, notably misallocation of variance and latency jitter. This paper describes some further caveats to PCA as well as using simulations to evaluate three potential methods for addressing them: parallel analysis, oblique rotations, and spatial PCA. An improved simulation model is introduced for examining these issues. It is concluded that PCA is an essential statistical tool for event-related potential analysis, but only if applied appropriately.

Analysis of Variance↗
PubMed2003

Addressing the needs of youth in transition to adulthood.

The appalling young-adult outcomes of youth with serious emotional disturbance who are served in public systems demonstrate a failure of standard services to address the unique needs of these youths during their transition from adolescence to adulthood. This article discusses the needs of this population and the current ability of mental health and other relevant agencies to meet those needs. The contrast between needs and system status is presented through a framework of contrasting developmental and institutional transitions. This article reviews the barriers to effective system reform, and the recommendations for changes made by national panels focused on transition and applied research.

Adolescent↗
PubMed2004

Innovative ways to address the mental health and medical needs of marginalized patients: collaborations between family physicians, family therapists, and family psychologists.

This article describes an innovative program to meet the needs of homeless women, children, and families residing at a transitional living center in an urban setting. The program involves collaboration between medical and mental health professionals to address the multiple problems and unmet needs of this population. Recommendations for future work in expanding collaborative practice are discussed. ((c) 2004 APA, all rights reserved)

Child↗
PubMed2005

Addressing political and racial terror in the therapeutic relationship.

Political and racial terror have important implications for the process of psychotherapy. This type of trauma can have unique effects on individual psychology and the larger social context of patients' lives that are distinct from other types of interpersonal trauma. Several intrapsychic processes, such as one's experience of mirroring, fear of annihilation, identification and internalization of aggression, the collective remembering of trauma, and subsequent mourning, are transformed through one's experiences of political and racial terror. Clinical illustrations of 2 patients treated in psychotherapy before and after the terrorist attacks of September 11, 2001, elaborate these effects of political and racial trauma. The implications of addressing these types of traumatic experience in psychotherapy, including issues of therapeutic neutrality, are discussed.

Adult↗
PubMed2005

A preventive pilot project addressing multiethnic tensions in the wake of the Iraq war.

This article describes a school-based preventive pilot project for recent immigrant children, designed to decrease anxiety and intergroup tensions associated with the Iraq war. Results suggest that clinicians should address the multiplicity of meanings associated with international events when planning a prevention program in multiethnic schools to help children to cope with the increasingly common gap between the ways traumatic events covered by the media are understood at home and at school.

Acculturation↗
PubMed2005

Addressing multiple relationships between clients and therapists in lesbian, gay, bisexual, transgender communities.

Therapists working in lesbian, gay, bisexual, and transgender (LGBT) communities are likely to experience the potential to engage in multiple relationships with their clients. Currently, the American Psychological Association's (2002) ethics code and the related literature base offer minimal direct guidance to therapists practicing in LGBT communities. In this article, the authors review current literature regarding multiple relationships in psychotherapy, considering how this literature addresses issues specific to practitioners working within LGBT communities, present a case study highlighting the negotiation of a multiple relationship between a client and therapist who both identify as lesbian, and offer recommendations for practitioners working within LGBT communities.

Cultural Diversity↗
PubMed2006

Addressing the problems with life-science databases for traditional uses and systems biology.

A prerequisite to systems biology is the integration of heterogeneous experimental data, which are stored in numerous life-science databases. However, a wide range of obstacles that relate to access, handling and integration impede the efficient use of the contents of these databases. Addressing these issues will not only be essential for progress in systems biology, it will also be crucial for sustaining the more traditional uses of life-science databases.

Animals↗
PubMed2026

Addressing the dual-use of antifungals and fungal antimicrobial resistance (fAMR) through a One Health approach.

Fungal antimicrobial resistance (fAMR) is accelerating, driven in part by the dual-use of antifungal modes of action in agriculture and medicine, threatening therapy. Addressing this challenge requires a unified One Health response that balances agricultural productivity, economic stability, and human and animal health. By focusing on the United Kingdom's policy approach, we argue that current efforts are constrained by fragmented governance, surveillance and regulation. To resolve this, we propose three policy recommendations: 1. a cross-government fAMR body, 2. mandatory environmental and clinical surveillance, and 3. for fungicide approvals to look beyond crop pathogens and integrate risk assessments for potential hotspots of resistance selection in human fungal pathogens. These measures will safeguard current and future antifungals while providing much-needed regulatory clarity and will be translatable to other national and regional contexts.

Journal Article↗