4,363 research outputs found
An Evaluation of the New York State Workersâ Compensation Pilot Program for Alternative Dispute Resolution
In 1995, the State 0f New York enacted legislation authorizing the establishment of a workers\u27 compensation alternative dispute resolution pilot program for the unionized sector of the construction industry. Collective bargaining agreements could establish an alternative dispute resolution process for resolving claims (including but not limited to mediation and arbitration), use of an agreed managed care organization or list of authorized providers for medical treatment that constitutes the exclusive source of all medical and related treatment, supplemental benefits, return-to-work programs, and vocational rehabilitation programs. The legislation also directed the School ofIndustrial and Labor Relations at Cornell University (ILR) to evaluate compliance with state and federal due process requirements provided in the collective bargaining agreements authorized by this act, and the use, costs and merits of the alternative dispute resolution system established pursuant to this act.
In response to this legislative mandate, ILR reviewed the research previously conducted on alternative dispute resolution (ADR), generally, and in workers\u27 compensation. This included examining the purported advantages and disadvantages of ADR, the prevalence of ADR, and published statistical or anecdotal evidence regarding the impact of ADR. ILR created a research design for claimant-level and project-level analyses, and developed data collection instruments for these analyses that included an injured worker survey for ADR claimants and claimants in the traditional (statutory)workers\u27 compensation system, an Ombudsman\u27s log, a manual of data elements pertaining to ADR and comparison group claimants, and interview questions for ADR signatories and other officials.
The findings in this report draw upon a comparison of claimant-level, descriptive statistics (averages) for injured workers in the ADR and traditional (statutory) workers\u27 compensation system; the results of more sophisticated, statistical analyses of claimant-level data; and project-level information (including, but not limited to, interviews with ADR signatories and dispute resolution officials)
Coulomb crystal mass spectrometry in a digital ion trap
We present a mass spectrometric technique for identifying the masses and relative abundances of Coulomb-crystallized ions held in a linear Paul trap. A digital radio-frequency wave form is employed to generate the trapping potential, as this can be cleanly switched off, and static dipolar fields are subsequently applied to the trap electrodes for ion ejection. Close to 100% detection efficiency is demonstrated for Ca+ and CaF+ ions from bicomponent Ca+ â CaF+ Coulomb crystals prepared by the reaction of Ca+ with CH3F. A quantitative linear relationship is observed between ion number and the corresponding integrated time-of-flight (TOF) peak, independent of the ionic species. The technique is applicable to a diverse range of multicomponent Coulomb crystalsâdemonstrated here for Ca+ â NH3+ â NH4+ and Ca+ â CaOH+ â CaOD+ crystalsâand will facilitate the measurement of ion-molecule reaction rates and branching ratios in complicated reaction systems
Characterization of the domestic goat γδ T cell receptor gene loci and gene usage
Goats and cattle diverged 30 million years ago but retain similarities in immune system genes. Here, the caprine T cell receptor (TCR) gene loci and transcription of its genes were examined and compared to cattle. We annotated the TCR loci using an improved genome assembly (ARS1) of a highly homozygous San Clemente goat. This assembly has already proven useful for describing other immune system genes including antibody and leucocyte receptors. Both the TCRÎł (TRG) and TCRδ (TRD) loci were similarly organized in goats as in cattle and the gene sequences were highly conserved. However, the number of genes varied slightly as a result of duplications and differences occurred in mutations resulting in pseudogenes. WC1+ γδ T cells in cattle have been shown to use TCRÎł genes from only one of the six available cassettes. The structure of that CÎł gene product is unique and may be necessary to interact with WC1 for signal transduction following antigen ligation. Using RT-PCR and PacBio sequencing, we observed the same restriction for goat WC1+ γδ T cells. In contrast, caprine WC1+ and WC1â γδ T cell populations had a diverse TCRδ gene usage although the propensity for particular gene usage differed between the two cell populations. Noncanonical recombination signal sequences (RSS) largely correlated with restricted expression of TCRÎł and δ genes. Finally, caprine γδ T cells were found to incorporate multiple TRD diversity gene sequences in a single transcript, an unusual feature among mammals but also previously observed in cattle
Adaptive selection signatures in river buffalo with emphasis on immune and major histocompatibility complex genes
River buffalo is an agriculturally important species with many traits, such as disease tolerance, which promote its use worldwide. Highly contiguous genome assemblies of the river buffalo, goat, pig, human and two cattle subspecies were aligned to study gene gains and losses and signs of positive selection. The gene families that have changed significantly in river buffalo since divergence from cattle play important roles in protein degradation, the olfactory receptor system, detoxification and the immune system. We used the branch site model in PAML to analyse single-copy orthologs to identify positively selected genes that may be involved in skin differentiation, mammary development and bone formation in the river buffalo branch. The high contiguity of the genomes enabled evaluation of differences among species in the major histocompatibility complex. We identified a Babesia-like L1 LINE insertion in the DRB1-like gene in the river buffalo and discuss the implication of this finding
Complete Genome Sequences of Two Genotype A2 Small Ruminant Lentiviruses Isolated from Infected U.S. Sheep
Two distinct subgroups of genotype A2 small ruminant lentiviruses (SRLVs) have been identified in the United States that infect sheep with specific host trans- membrane protein 154 (TMEM154) diplotypes. Here, we report the first two com- plete genome sequences of SRLV strains infecting U.S. sheep belonging to genotype A2, subgroups 1 and 2
Classification of small ruminant lentivirus subtype A2, subgroups 1 and 2 based on whole genome comparisons and complex recombination patterns
Background: Small ruminant lentiviruses (SRLVs) cause a multisystemic chronic wasting disease in sheep across much of the world. SRLV subtype A2 is prevalent in North America and further classified into multiple subgroups based on variation in the group antigens gene (gag) and envelope (env) genes. In sheep, the ovine transmembrane protein 154 (TMEM154) gene is associated with SRLV susceptibility. Ewes with at least one copy of TMEM154 encoding a fulllength protein with glutamate at position 35 (E35; haplotypes 2 and 3), are highly susceptible to SRLV infection while ewes with any combination of TMEM154 haplotypes which encodes lysine (K35; haplotype 1), or truncated proteins (haplotypes 4 and 6) are several times less so. A2 subgroups 1 and 2 are associated with host TMEM154 genotypes; subgroup 1 with the K35/K35 genotype and subgroup 2 with the E35/E35 genotype.
Methods: The goals of this study were to analyze sequence variation within and among SRLV subtype A2 subgroups 1 and 2 and to identify genome-scale recombination patterns. This was done using full-length assemblies of virus samples.
Results: Consensus viral genomes were assembled for 23 infected sheep, including animals of assorted TMEM154 genotypes comprised of haplotypes 1, 2, or 3. Viral genome analysis identified viral subgroups 1 and 2 among the samples, and revealed additional substructure within subgroup 2 based on models predicting complex patterns of recombination between the two subgroups in several genomes. Animals with evidence of dual subgroup infection also possessed the most diverse quasi-species and the most highly recombined genomes.
Conclusions: The viral subgroup framework developed to classify SRLV consensus genomes along a continuum of recombination suggests that animals with the TMEM154 E35/K35 genotype may represent a reservoir for producing viral genomes representing recombination between A2 subgroups 1 and 2
Atomic Resonance and Scattering
Contains reports on eleven research projects.U.S. Air Force - Office of Scientific Research (Grant AFOSR-81-0067
Fibroblasts derived from oesophageal adenocarcinoma differ in DNA methylation profile from normal oesophageal fibroblasts
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the articleâs Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the articleâs Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.Oesophageal adenocarcinoma (OAC) is increasing in incidence and has a poor prognosis. Tumour derived fibroblasts (TDFs) differ functionally from normal fibroblasts (NDFs), and play a pivotal role in cancer. Many of the differences persist through subculture. We measured the DNA methylation profiles of 10 TDFs from OAC with 12 NDF from normal oesophageal mucosa using Infinium HumanMethylation450 Beadchips and found they differed in multidimensional scaling analysis. We identified 4,856 differentially methylated CpGs (DMCs, adjusted pââ0.15), of which 3,243 (66.8%) were hypomethylated in TDFs compared to NDFs. Hypermethylated DMCs were enriched at transcription start sites (TSSs) and in CpG islands, and depleted in transcriptional enhancers. Gene ontology analysis of genes with DMCs at TSSs revealed an enrichment of genes involved in development, morphogenesis, migration, adhesion, regulation of processes and response to stimuli. Alpha-smooth muscle actin (Îą-SMA) is a marker of activated fibroblasts and a poor prognostic indicator in OAC. Hypomethylated DMCs were observed at the TSS of transcript variant 2 of Îą-SMA, which correlated with an increase in Îą-SMA protein expression. These data suggest that DNA methylation may contribute to the maintenance of the TDF phenotype
Breaking the cycle of maltreatment: The role of safe, stable, and nurturing relationships
Purpose
We examine two research questions. First, does a history of child maltreatment victimization significantly increase the likelihood of maltreatment perpetration during adulthood? Second, do safe, stable, and nurturing relationships (SSNRs) during early adulthood serve as direct protective factors, buffering protective factors, or both to interrupt intergenerational continuity in maltreating behaviors?
Methods
Data come from the Rochester Youth Development Study that followed a community sample from age 14 to 31 with 14 assessments. Maltreatment victimization records covering birth through age 17 were collected from Child Protective Services records as were maltreatment perpetration records from age 21 to 30. Data on five SSNRs were measured during three interviews from ages 21 to 23.
Results
There is a significant relationship between maltreatment victimization and maltreatment perpetration (odds ratio = 2.57; 95% confidence interval = 1.47â4.50). Three of the five SSNRs investigatedârelationship satisfaction, parental satisfaction, and attachment to childâserved as direct protective factors, significantly reducing risk for those who had been maltreated. However, none of the interaction termsâbetween maltreatment victimization and the SSNRâwas statistically significant, indicating that the SSNRs did not serve as buffering protective factors
Conclusions
Although a history of maltreatment significantly increases the risk of subsequent perpetration of maltreatment, enhancing SSNRs with intimate partners and with children during early adulthood can decrease the odds that a victim of maltreatment will become a perpetrator. Mandated reporters and service providers should be aware of the risk posed by earlier maltreatment and be prepared to ameliorate that risk, in part by strengthening supportive social relationships
Laboratory Focus on Improving the Culture of Biosafety: Statewide Risk Assessment of Clinical Laboratories That Process Specimens for Microbiologic Analysis
The Wisconsin State Laboratory of Hygiene challenged Wisconsin laboratories to examine their biosafety practices and improve their culture of biosafety. One hundred three clinical and public health laboratories completed a questionnaire-based, microbiology-focused biosafety risk assessment. Greater than 96% of the respondents performed activities related to specimen processing, direct microscopic examination, and rapid nonmolecular testing, while approximately 60% performed culture interpretation. Although they are important to the assessment of risk, data specific to patient occupation, symptoms, and travel history were often unavailable to the laboratory and, therefore, less contributory to a microbiology-focused biosafety risk assessment than information on the specimen source and test requisition. Over 88% of the respondents complied with more than three-quarters of the mitigation control measures listed in the survey. Facility assessment revealed that subsets of laboratories that claim biosafety level 1, 2, or 3 status did not possess all of the biosafety elements considered minimally standard for their respective classifications. Many laboratories reported being able to quickly correct the minor deficiencies identified. Task assessment identified deficiencies that trended higher within the general (not microbiology-specific) laboratory for core activities, such as packaging and shipping, direct microscopic examination, and culture modalities solely involving screens for organism growth. For traditional microbiology departments, opportunities for improvement in the cultivation and management of highly infectious agents, such as acid-fast bacilli and systemic fungi, were revealed. These results derived from a survey of a large cohort of small- and large-scale laboratories suggest the necessity for continued microbiology-based understanding of biosafety practices, vigilance toward biosafety, and enforcement of biosafety practices throughout the laboratory setting
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