Effect of sire breed on grass-based lamb production

Improvement of lamb performance in low-input operations may prove vital for the sustainability of eastern US sheep production. Maintaining growth while improving carcass conformation using terminal sire crossbreeding systems may increase value in a pasture-based system. Therefore, the aim of this study was to compare effects of terminal sire breed on parasitism, growth, marketability of grazing lambs. Suffolk (SU; n = 2) and Texel (TX; n = 2) sires were mated to commercial ewes at the WVU Organic Farm. April-born lambs were managed on pasture as one group until weaning (mid-June), then were separated into 3 replicates per sire breed. Lambs were rotationally grazed for 93-d with paddock movement every 10-d and supplemented at a rate of 2% (16% CP) bodyweight. Weights were collected at weaning and then weekly for the duration of the study. Fecal egg counts (FEC) and FAMACHA scores were collected bi-weekly. Ultrasound measures of ribeye area (REA) were obtained at study conclusion and lambs were marketed at a graded auction. Sire breed did not impact weaning weight or growth rate. However, TX-sired lambs required fewer deworming treatments than SU-sired lambs (39% vs. 12%; P \u3c 0.01). FAMACHA scores were numerically lower in TX vs. SU-sired lambs (1.58 vs. 1.96; P \u3c 0.01. Texel-sired lambs had greater REA (11.57 vs 9.42 cm2; P \u3c 0.01) and graded better at auction. Texel-sired lambs sold for $27/cwt. more than Suffolk-sired lambs. These data demonstrate that the desirable composition of TX-sired lambs translated into greater market value

Atomic Quantum State Teleportation and Swapping

A set of protocols for atomic quantum state teleportation and swapping utilizing Einstein-Podolsky-Rosen light is proposed. The protocols are suitable for collective spin states of a macroscopic sample of atoms, i.e. for continuous atomic variables. Feasibility of experimental realization for teleportation of a gas sample of atoms is analyzed.Comment: 4 pages, 1 figur

Canonical Quantum Teleportation

Canonically conjugated observables such as position-momentum and phase-number are found to play a 3-fold role in the drama of the quantum teleportation. Firstly, the common eigenstate of two commuting canonical observables like phase-difference and number-sum provides the quantum channel between two systems. Secondly, a similar pair of canonical observables from another two systems is measured in the Bell operator measurements.Comment: revtex,4 pages,e-mail:[email protected] www.itp.ac.cn/~suncp; The Institute of Theoretical Physics, Academia Sinica, Beijing 100080, P.R. Chin

A high-resolution infrared spectroscopic investigation of the halogen atom-HCN entrance channel complexes solvated in superfluid helium droplets

Rotationally resolved infrared spectra are reported for the X-HCN (X = Cl, Br, I) binary complexes solvated in helium nanodroplets. These results are directly compared with that obtained previously for the corresponding X-HF complexes [J. M. Merritt, J. K\"upper, and R. E. Miller, PCCP, 7, 67 (2005)]. For bromine and iodine atoms complexed with HCN, two linear structures are observed and assigned to the $^{2}\Sigma_{1/2}$ and $^{2}\Pi_{3/2}$ ground electronic states of the nitrogen and hydrogen bound geometries, respectively. Experiments for HCN + chlorine atoms give rise to only a single band which is attributed to the nitrogen bound isomer. That the hydrogen bound isomer is not stabilized is rationalized in terms of a lowering of the isomerization barrier by spin-orbit coupling. Theoretical calculations with and without spin-orbit coupling have also been performed and are compared with our experimental results. The possibility of stabilizing high-energy structures containing multiple radicals is discussed, motivated by preliminary spectroscopic evidence for the di-radical Br-HCCCN-Br complex. Spectra for the corresponding molecular halogen HCN-X$_{2}$ complexes are also presented.Comment: 20 pages, 15 figures, 6 tables, RevTe

Entrance Channel X-HF (X=Cl, Br, and I) Complexes studied by High-Resolution Infrared Laser Spectroscopy in Helium Nanodroplets

Rotationally resolved infrared spectra are reported for halogen atom - HF free radical complexes formed in helium nanodroplets. An effusive pyrolysis source is used to dope helium droplets with Cl, Br and I atoms, formed by thermal dissociation of Cl$_2$, Br$_2$ and I$_2$. A single hydrogen fluoride molecule is then added to the droplets, resulting in the formation of the X-HF complexes of interest. Analysis of the resulting spectra confirms that the observed species have $^2\Pi_{3/2}$ ground electronic states, consistent with the linear hydrogen bound structures predicted from theory. Stark spectra are also reported for these species, from which the permanent electric dipole moments are determined.Comment: 41 pages, 16 figures, 5 table

Electrospun poly(d/l-lactide-co-l-lactide) hybrid matrix: a novel scaffold material for soft tissue engineering

Electrospinning is a long-known polymer processing technique that has received more interest and attention in recent years due to its versatility and potential use in the field of biomedical research. The fabrication of three-dimensional (3D) electrospun matrices for drug delivery and tissue engineering is of particular interest. In the present study, we identified optimal conditions to generate novel electrospun polymeric scaffolds composed of poly-d/l-lactide and poly-l-lactide in the ratio 50:50. Scanning electron microscopic analyses revealed that the generated poly(d/l-lactide-co-l-lactide) electrospun hybrid microfibers possessed a unique porous high surface area mimicking native extracellular matrix (ECM). To assess cytocompatibility, we isolated dermal fibroblasts from human skin biopsies. After 5 days of in vitro culture, the fibroblasts adhered, migrated and proliferated on the newly created 3D scaffolds. Our data demonstrate the applicability of electrospun poly(d/l-lactide-co-l-lactide) scaffolds to serve as substrates for regenerative medicine applications with special focus on skin tissue engineering

Decoherence Effects on Superpositions of Chiral States in a Chiral Molecule

The superposition of chiral states of chiral molecules, as delocalized quantum states of a many-particle system, can be used for the experimental investigations of decoherence theory. In this regard, a great challenge is the precise quantification of the robustness of these superpositions against environmental effects. The methods so far proposed need the detailed specification of the internal states of the molecule, usually requiring heavy numerical calculations. Here, by using the linearized quantum Boltzmann equation and by borrowing ideas employed for analyzing other quantum systems, we present a general and simple approach, of large applicability, which can be used to compute the dominant contribution to the decoherence rate for the superpositions of chiral states of chiral molecules, due to environmental scattering.Comment: 6 pages, 1 Figur

The lifeworld of the high school special education teacher: Voices signified

This study seeks to synthesize and communicate a clearer and deeper understanding of the lifeworld of High School Special Education Teachers who work in urban school districts in British Columbia among students who have Low Incidence Special Needs. An autoethnographic approach, involving narratives of the author’s own lived experience, and hermeneutic/phenomenological interpretations of interview transcripts constitute the main methods used for this small-scale qualitative study. Four teachers volunteered to participate by providing interviews for this study; three had teaching experience among students with low-incidence disabilities, while the other was an experienced teacher of students with high-incidence learning disabilities. The contributions of the participants suggest several themes that influenced commonly their feelings of job satisfaction, value, and worth in their workplace. These themes range from administrative support through self-efficacy, role expectations, job demands, autonomy, complexity of student profiles, parent expectations, collegiality, school culture/climate, inclusion, safety and violence, caring, and professional development opportunities. After a qualitative analysis/interpretation involving an inter-source comparison of interview themes with concepts gathered from a review of relevant literature and a conceptual framework grounded in educational ethics and capabilities theory, the results of the study portray the role of high school special education teacher as multifaceted and complex; involving multiple tasks that are often misunderstood and undervalued; and often faced with emergent factors, which, if under-accommodated, can lead to teacher burn out and attrition among highly skilled teachers. Despite suggestions in past research contending that higher levels of education and increases in salary are incentives to stay in the field, these themes were never raised by any of the interview participants

DEVELOPMENT OF A 3D HOUSING SPACE WITH OBJECTS FROM DIFFERENT TIME PERIODS

Današnje dni smo deležni ogromno vizualizacij in upodobitev prostorov iz določenih časovnih obdobij, vendar pa smo le redko deležni upodobitev, ki predstavljajo, kako so se prostori spreminjali čez čas. Imamo upodobitve, ki predstavljajo vrhunec oblikovanja in kompozicije ter so največkrat narejene zaradi prodaje, zato je bil cilj diplomskega dela ustvarjanje nekakšne časovne kapsule. Namen diplomskega dela je bil preučitev učinkovite uporabe programa Blender 3D, oblikovanje, iskanje referenčnega gradiva in upodabljanje. Cilj diplomskega dela je bil poleg tega izdelava prostora, ki je bil ustvarjen v določenem časovnem obdobju, in prikazovanje, kako se je prostor spremenil skozi čas. Teoretični del obsega osnove o 3D oblikovanju, razlago o materialih, referenčnih podlagah, osvetljavi in upodobitvah. Vsa teorija je navezana na program Blender 3D in njegovo uporabo. V eksperimentalnem delu je predstavljeno, kako je potekala izdelava okolja in kateri izzivi so se pojavili ob njegovem ustvarjanju. Rezultati dela prikazujejo upodobitve kopalnice, ki je bila deležna sprememb skozi obstoj. Rezultati diplomskega dela vključujejo končne upodobitve kopalnice, ki se je spreminjala skozi leta, v razpravi in zaključkih pa sta podani diskusija ter analiza dela in vizualizacij.These days, we see many visualizations and renders of spaces from set time periods, but rarely do we see visualizations of areas that go through many time periods and how that affects the areas themselves. We have renders which showcase the pinnacle of design, composition, and are in most cases made with the end goal being a sale, which is why we decided to make a time capsule. The idea of this diploma was to learn design, rendering, searching for references and become proficient with Blender. The goal was to create a space, which was created at a certain time period and show how it changed though time. The entire theoretical part was based on Blender 3D and its use. In the experimental part, we showed what the process of creating the environment looked like and what kind of challenges came up with its creation. The results are shown as renders of the bathroom, which has gone through changes in its lifetime. Results show renders of the finished space, which shows changes throughout its span of life