Assessment of effectiveness of deworming options in recently weaned beef cattle utilizing different anthelmintic programs in the southeast.

This study evaluated the effects of three different anthelmintic strategies on animal performance and anthelmintic effectiveness in weaned calves during a 42-d preconditioning period. The study was conducted at four locations over 2 yr and included a total of 797 recently weaned spring-born calves (initial BW 260 ± 37.7 kg).

Long-Range Ferromagnetic Exchange Interactions Mediated by Mn-Ce-Mn Superexchange Involving Empty 4f Orbitals.

Reactions involving reductive aggregation of MnO in methanol in the presence of Ce and an excess of carboxylic acid have led to the synthesis of structurally related Ce/Mn clusters, [CeMnO(OMe)(OCBu)(MeOH)] () and [CeMnO(OCPh)(MeOH)] (), containing at least one {MnCeO} cubane unit. The cores of both clusters contain Mn units separated by three () or two () Ce ions. Fits of variable-temperature, solid-state dc and ac magnetic susceptibility data reveal dominant ferromagnetic interactions within and , resulting in the maximum = / and = 5 ground state spins, respectively, and thus suggesting significant ferromagnetic (F) interactions between the Mn units that are ≥6 Å apart and separated by four intervening bonds through diamagnetic Ce.

Warm-season annual forages in forage-finishing beef systems: I. Forage yield and quality.

The demand for a year-round supply of fresh, locally grown, forage-finished beef products has created a need for forage-finishing strategies during the summer months in the southeast. A 3-yr study was conducted to evaluate four warm-season annual forages in a southeastern forage-finishing beef production system. Treatments were four forage species and included brown-midrib sorghum × sudangrass ( var.

Management of asymptomatic severe aortic stenosis.

Patients with symptomatic severe aortic stenosis (AS) benefit from aortic valve replacement surgery, but the management of patients with asymptomatic severe AS is more controversial. While cholesterol and angiotensin have been linked to AS progression, we should await the results of ongoing randomized trials before medical therapy to lower cholesterol or inhibit angiotensin can be recommended to limit disease progression. Clinical factors, echocardiographic parameters, valve morphology, exercise stress testing results, and cardiac biomarkers may be useful in identifying patients who will have early development of symptoms during follow-up and require closer monitoring.

Three-dimensional bioassembly tool for generating viable tissue-engineered constructs.

The primary emphasis of tissue engineering is the design and fabrication of constructs for the replacement of nonfunctional tissue. Because tissue represents a highly organized interplay of cells and extracellular matrix, the fabrication of replacement tissue should mimic this spatial organization. This report details studies evaluating the use of a three-dimensional, direct-write cell deposition system to construct spatially organized viable structures.

Activation of soluble guanylyl cyclase inhibits estradiol production and cyclic AMP accumulation from cultured rat granulosa cells.

Objective: To demonstrate the expression of soluble guanylyl cyclase (sGC) alpha and beta subunits in rat granulosa cells and determine the effects sGC activation on levels of cyclic GMP (cGMP), E2, and cAMP.

Design: Basic research study.

Setting: University research laboratory.

Cell-specific expression and regulation of soluble guanylyl cyclase alpha 1 and beta 1 subunits in the rat ovary.

Soluble guanylyl cyclase (sGC) is activated by nitric oxide (NO) and carbon monoxide, resulting in cGMP production. Recent studies indicate that NO and cGMP influence ovarian functions. However, little information is available regarding the ovarian expression of sGC.

Use of complementary and alternative medical therapies in patients with cardiovascular disease.

Background: Complementary and alternative medical (CAM) therapies are becoming increasingly popular, yet little information is available about the prevalence and patterns of CAM therapy use by patients with cardiovascular disease (CVD).

Methods: Interviewers administered telephone questionnaires to 107 patients randomly selected from a stratified cohort of 2487 eligible patients participating in a registry of patients with CVD.

Results: The current use of CAM therapies was reported by 64% of the patients surveyed.