Nanoscale Torsional Resonator for Polarization and Spectroscopy of Nuclear Spins

We propose a torsional resonator that couples to the transverse spin dipole of an attached sample. The absence of relative motion eliminates a source of friction that would otherwise hinder nanoscale implementation. Enhanced spontaneous emission induced by the resonator relaxes the longitudinal spin dipole at a rate of ~1  s^(-1) in the low-temperature limit. With signal averaging, single-proton magnetic resonance spectroscopy appears feasible at ~10  mK and a high magnetic field, while single-shot sensitivity is practical for samples with at least tens of protons in a volume of ~5  nm^3

Higher Education Governance: Proposals for Model Child Protection Governance Policy

La presente investigación tuvo como objetivo identificar los niveles de riesgos laborales a los que están expuestos los profesionales de enfermería que laboran en el Servicio de Emergencia del Hospital Suarez III Angamos Lima- 2015. Es un estudio descriptivo transversal, se trabajó con una muestra de 240 profesionales de la salud , para el recojo de la información se utilizó un cuestionario tipo Likert , la validez del instrumento se realizó mediante la prueba de concordancia del juicio de expertos obteniendo un valor de 0,86; la confiabilidad se realizó mediante el alfa de Cronbach con un valor de 0,911, la prueba de hipótesis se realizó mediante el Chi-Cuadrado con un valor de 42,6 y con un nivel de significancia de valor p<0,05. Los resultados indican que los riesgos laborales a los que están expuestos los profesionales de enfermería son altos. Este nivel se presenta de acuerdo a las respuestas que se señalan: tienen contacto con sangre y otros fluidos corporales, han sufrido accidentes con material corto punzante cortes y/o salpicaduras, no han recibido capacitación sobre riesgo biológico, químico, consideran que en el servicio de emergencia se expone a contaminantes químicos, los sistemas de ventilación e iluminación de emergencia no son adecuados, el proceso laboral que desarrollan demanda de jornadas laborales con tiempos prolongados de pie, los procedimientos que realizan generan estrés laboral y mental, el ambiente en el que desarrollan sus procesos de trabajo genera estrés

The 2014 Leadership Academy: Six Months Out

In this article, the authors discuss what they learned at the AALL 2014 Leadership Academy, and how they have applied those lessons in their professional lives

The Cleavable Carboxyl-Terminus of the Small Coat Protein of Cowpea Mosaic Virus Is Involved in RNA Encapsidation

AbstractThe site of cleavage of the small coat protein of cowpea mosaic virus has been precisely mapped and the proteolysis has been shown to result in the loss of 24 amino acids from the carboxyl-terminus of the protein. A series of premature termination and deletion mutants was constructed to investigate the role or roles of these carboxyl-terminal amino acids in the viral replication cycle. Mutants containing premature termination codons at or downstream of the cleavage site were viable but reverted to wild-type after a single passage through cowpea plants, indicating that the carboxyl-terminal amino acids are important. Mutants with the equivalent deletions were genetically stable and shown to be debilitated with respect to virus accumulation. The specific infectivity of preparations of a deletion mutant (DM4) lacking all 24 amino acids was 6-fold less than that of a wild-type preparation. This was shown to be a result of DM4 preparations containing a much increased percentage (73%) of empty (RNA-free) particles, a finding that implicates the cleavable carboxyl-terminal residues in the packaging of the virion RNAs

Longitudinal Changes in Fat and Lean Mass: Comparisons between 3D-Infrared and Dual-Energy X-ray Absorptiometry Scans in Athletes

International Journal of Exercise Science 15(4): 1587-1599, 2022. The low cost and portability of three-dimensional (3D) infrared body scanners make them an attractive tool for body composition measurement in athletes. The main purpose of this study was to compare total body fat percentage (BF%) and total lean mass (LM in kg), in a cohort of collegiate athletes, using a 3D infrared body scanner versus a dual energy x-ray absorptiometry (DXA) scanner. Phase I was a pre-season cross-sectional analysis of 61 (39 male) athletes while Phase II was a longitudinal subset analysis of 38 (27 male) student-athletes who returned to the laboratory for post-season scans (Post minus pre-season change). Both the 3D and DXA scans were performed within 20-minutes of one another in the same room, wearing the same clothing. Paired t-tests were used to compare the mean values (BF% and LM) between measurement devices with estimated effects size calculated using Cohen’s d. Data reported as mean±SD. Mean difference (DXA minus 3D) in LM were significantly higher using the 3D scan (5.84 ± 3.55kg; p \u3c 0.001; d = 0.90) compared to the DXA scan, while significantly underestimating BF% (-4.57 ± 4.67%; p \u3c 0.001; d = 1.6) in Phase I analyses. In Phase II analyses, significant differences in the change (post-season minus pre-season change) values were found between methods for LM (4.45 ± 5.04; p \u3c 0.001; d = 0.90), while BF% (-0.41 ± 2.06; p= 0.223; d = 0.2) showed no significant differences. In summary, the 3D and DXA scan values for LM and BF% were not interchangeable in cross-sectional nor longitudinal body composition analyses in collegiate athletes. Close agreement was only observed in longitudinal analyses of BF% and requires further validation with larger cohorts

Scaling of Traction Forces with Size of Cohesive Cell Colonies

To understand how the mechanical properties of tissues emerge from interactions of multiple cells, we measure traction stresses of cohesive colonies of 1-27 cells adherent to soft substrates. We find that traction stresses are generally localized at the periphery of the colony and the total traction force scales with the colony radius. For large colony sizes, the scaling appears to approach linear, suggesting the emergence of an apparent surface tension of order 1E-3 N/m. A simple model of the cell colony as a contractile elastic medium coupled to the substrate captures the spatial distribution of traction forces and the scaling of traction forces with the colony size.Comment: 5 pages, 3 figure

Using Nuclear Magnetic Resonance (NMR) Metabolic Profiling to Distinguish Herds of Bighorn Sheep

The objective of this study was to determine if nuclear magnetic resonance (NMR) metabolic profiling has the potential to serve as a management tool for evaluating herds of bighorn (Ovis canadensis) sheep. Two-hundred and forty bighorn sheep serum samples from 13 herds located in Montana and Wyoming were processed for NMR spectra, profiled for small molecule metabolites using Chenomx®, and then analyzed with MetaboAnalyst (v3.0). Fifty-six small molecule metabolites were identified in ungulate serum.  To determine if NMR metabolic profiles can distinguish herds that are geographically distinct with access to different nutritional resources, herds collected in December were compared to herds collected in March. Partial least square discriminant analysis (PLS-DA) indicated a clear, majority separation of metabolic shifts with minor overlaps. Biomarker analysis identified 15 potential biomarkers from the compounds with variables of importance (VIP) scores greater than 1.0. These molecules enabled us to identify ‘significantly’ important metabolic pathways that discriminate herds sampled in December and herds sampled in March. Key biomarkers resulting from the pathway analysis, included: 2-oxoisocaproate, choline, tyrosine, creatinine, and trimethylamine n-oxide. To determine if metabolic profiling can distinguish individual herds within a month, herds in December, January and March were compared to a domestic, Rambouillet ewes (control) sampled during the sample months.  PLS-DA of all herds showed clear metabolic shifts and complete separation between each individual herd and the control ewes for each month. Potential biomarkers for herds within a season that were found to be good discriminants for the December herds included: trimethylamine n-oxide and sarcosine; for January herds included: creatinine and asparagine; and, for March herd included, creatinine. Through identification of small molecule metabolites, it is possible to discriminate herds from each other within and between seasons. These biomarkers represent a potential panel of metabolites that may be used for assessing nutritional status, environmental stress, and herd health through the identification of significantly important metabolic pathways related to energy and protein balance

Prospectus, December 1, 1977

STU-GO: STU-GO VOTES AGAINST DELAY SYSTEM, WILL BUY \u27TOYS FOR TOTS\u27; Toys for Tots; Woods offers nice winter get-away; Vets should give notice if planning to move; PFW Christmas party tonight; Corbin speaks on Animal Biology; Parkland Events; Hymn and carol sing in PC gym; Canteen committee member castigates \u27cake\u27 communique; New agribusiness course announced; Vet Techs Week; Wide-screen TV; League seeking more bowlers; \u27Masters-piece\u27 presented here by senior group; The Better Information Project, also known as BIPPIE awards; SWAMP sponsors info fair here; Poet\u27s Corner; Monday set as interview night for real-estaters; Women gather in Houston: Was IWY meeting effective?; Author here Monday; Devices help the visually impaired; Old-fashioned Christmas at New Salem; Special Notice; Journ club meets; Silver cue sparkles in exhibition: White conjures and captures crowd; Classifieds; Bouncing Bob takes over; Eureka JV\u27s remain question for Cobra squad; Cobras drop first game to fired-up Springfield quintet; Hopes are high: indoor track; Larson, Adams represent PC at nationals in Tuscon; M-S best 2-A team; High school roundballers groom for March Madness; Men\u27s basketball: Home opener features convincing win; Can women repeat success?: Freshmen lead women cagers, Perfection hard to improve upon, Parkland Women\u27s Basketball Team, Parkland Women\u27s Basketball Schedulehttps://spark.parkland.edu/prospectus_1977/1002/thumbnail.jp