What roles can leaders play to create, nurture, and sustain a campus culture that can ultimately lead to improving student success, to diversifying the ranks of faculty and administrators, and to facilitating meaningful engagement concerning the critical issues of diversity, equity, and inclusion? This chapter offers the candid views and suggestions of an accidental leader, who now leads one of the largest community college districts in the nation.
Bovine mammary gland biopsies allow researchers to collect tissue samples to study cell biology including gene expression, histological analysis, signaling pathways, and protein translation. This article describes two techniques for biopsy of the bovine mammary gland (MG). Three healthy Holstein dairy cows were the subjects. Before biopsies, cows were milked and subsequently restrained in a cattle chute. An analgesic (flunixin meglumine, 1.1 to 2.2 mg/kg of body weight) was administered via jugular intravenous [IV] injection 15-20 min prior to biopsy. For standing sedation, xylazine hydrochloride (0.01-0.05 mg/kg of body weight) was injected via the coccygeal vessels 5-10 min before the procedure. Once adequately sedated, the biopsy site was aseptically prepared and locally anaesthetized with 6 mL of 2% lidocaine hydrochloride via subcutaneous injection. Using aseptic technique, a 2 to 3 cm vertical incision was made using a number 10 scalpel. Core and needle biopsy tools were used. The core biopsy tool was attached to a cordless drill and inserted into the MG tissue through the incision using a clock-wise drill action. The needle biopsy tool was manually inserted into the incision site. Immediately after the procedure, an assistant applied pressure on the incision site for 20 to 25 min using a sterile towel to achieve hemostasis. Stainless steel surgical staples were used to oppose the skin incision. The staples were removed 10 days post-procedure. The main advantages of core and needle biopsies is that both approaches are minimally invasive procedures that can be safely performed in healthy cows. Milk yield following the biopsy was unaffected. These procedures require a short recovery time and result in fewer risks of complications. Specific limitations may include bleeding after the biopsy and infection on the biopsy site. Applications of these techniques include tissue collection for clinical diagnosis and research purposes, such as primary cell culture.
Una de las conclusiones más importantes del análisis económico del derecho es que el marco jurídico es un factor fundamental para el crecimiento económico en cualquier sociedad. Ante la existencia de fallos del mercado, los economistas han planteado, en muchos casos, soluciones para elevar el nivel del bienestar social basadas en la intervención del Estado mediante una regulación más estricta de determinados sectores, el monopolio público o el establecimiento de impuestos. Este enfoque es, a menudo, equivocado porque no valora en forma suficiente la capacidad de la sociedad para diseñar instituciones jurídicas que produzcan resultados eficientes.
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