rhododendron dauricum l. is an ancient chinese traditional herb. the pharmacological effects of r. dauricum extract have been shown in chronic tracheitis. the aim of this study was to investigate the cardiovascular effects of rhododendron dauricum l. flavonoids (rf) on rats and its mechanisms. this study was performed in isolated vascular rings and a rat model of myocardial infarction and isola...

the effect of different levels of osmolality and ph of lactose extender on the viability of bactrian camelspermatozoa was investigated. semen was collected from 10 bactrian camel bulls using modified bovineartificial vagina. in experiment i, the extenders consisted of 9, 10, 11, 12 and 13% lactose with respectiveosmolalities of 290, 333, 350, 376 and 419 mosm/kg and the ph of 6.9. in experiment...

Fertility preservation procedures are indicated when it's predicted that there will be exposure to a cause of infertility. Mainly cancer treatment, such as chemotherapy, radiation, and surgery, may destroy a person's ability to have children later in life, and oncofertility research focuses on increasing fertility preservation options. Oncofertility is a subfield that bridges oncology and repro...

Preservation has value to society over and above the value of the content that is preserved. It is important to articulate this value in order to argue compellingly for the creation of public policies and economic models that adequately support preservation of culturally significant content. This article explores the societal value of preservation, discussing why questions about societal value ...

Digital preservation has turned into a pressing challenge for institutions having the obligation to preserve digital objects over years. A range of tools exist today to support the variety of preservation strategies such as migration or emulation. Yet, different preservation requirements across institutions and settings make the decision on which solution to implement very difficult. The Austri...

Preserving long-term access to digital information resources is one of the key challenges facing libraries and information centers today. The University of North Texas (UNT) Libraries has entered into partnership agreements with federal and state agencies to ensure permanent storage and public access to a variety of government information sources. As digital resource preservation encompasses a ...

The preservation community is busily building systems for repositories, identification and characterisation, analysis and monitoring, planning and other key activities, and increasingly, these systems are linked to collaborate more effectively. While some standard metadata schemes exist that facilitate interoperability, the controlled vocabularies that are actually used are rare and not powerfu...

Properties of digital objects play a central role in digital preservation. All key preservation services are linked via a common understanding of the properties which describe the digital objects in a repository's care. Unfortunately, different services deal with properties on sometimes different levels of description. While, for example, a preservation characterization service may extract the ...

Fertility preservation has gained increased acceptance, and many reproductive medicine centers have established programs for this service. A recent report, which collected data from all Nordic university hospitals that had initiated programs for fertility preservation (N = 14), found that breast cancer is the most common diagnosis among women who underwent procedures aimed at fertility preserva...

PURPOSE To evaluate the NAC effects on liver hypothermic preservation at different time intervals. METHODS For this, we used livers of male Wistar rats weighing between 250 and 300 g, undergoing preservation in Ringer solution at 4°C for up to 24 hours. Tissue samples were obtained at four moments of preservation for histological examination by hematoxylin and eosin staining: T0 = beginning o...