To maximize digestion by cattle, ruminal microbes require adequate nourishment. For cattle consuming poor-quality forages, nitrogen (N) is the nutrient that is typically most limiting for the microbes (Köster et al., 1996). The total amount of N required by the microbes would minimally be the amount of microbial N flowing from the rumen and to the small intestine, but an additional amount of N ...

The design and synthesis of a novel acid-degradable polyethylene glycol-based N-hydroxysuccinimide (NHS) ester-activated crosslinker is reported. reactive towards nucleophiles features central ketal functional group that stable at pH > 7.5 rapidly hydrolyses 6.0. used to (i) fabricate polysaccharide hydrogels exhibit controlled degradation upon exposure an acidic environment or via endogenous e...

In this paper an attempt has been made to develop an appropriate storage and collection plan based on optimal routing model using Geologic Information System in one of the wards of the Singanallur, Coimbatore city, India. The ward map is digitized and georeferenced. The collection bins are attributed and collection routes of the MSW are optimized for degradable and recyclable wastes separately....

Considerable efforts have been placed on the development of degradable microspheres for use in transarterial embolization indications. Using the guidance of the U.S. Food and Drug Administration (FDA) special controls document for the preclinical evaluation of vascular embolization devices, this review consolidates all relevant data pertaining to novel degradable microsphere technologies for bl...

A synthetic polymer is a plastic, which having wide applications in our day-to-day life. The packaging industries, agriculture, cosmetics, etc. Plastics are not easily degradable, it takes 1000 years to degrade plastic or even more than that. pollution caused by only because of the waste disposal method but also releases carbon dioxide and dioxins while burning. considered threat environment as...

Recent developments in the synthetic degradable polymers have been the subject of significant interest for macromolecular science to both of an environmental and biomedical perspective with dedication towards applications in tissue engineering and drug delivery. The best candidate for degradable polymer is poly (lactic acid) (PLA), which is described as aliphatic polyester [1]. It is produced f...

this study was performed to evaluate the effects of crud protein (cp) level on dry matter intake in prepartum period, productive performance and health of fresh cows. twenty multiparous holstein cows were assigned randomly to one of two dietary treatments. dietary treatments were treatment 1, 13% cp of dm (control), and treatment 2, 16% cp of dm. diets were similar in lactation net energy and r...

The objective of this study was to investigate the relationship between nitrogen isotopic fractionation (δ(15)N) and nitrogen-use efficiency (milk nitrogen/nitrogen intake; NUE) in pasture-fed dairy cows supplemented with increasing levels of urea to mimic high rumen degradable protein pastures in spring. Fifteen cows were randomly assigned to freshly cut pasture and either supplemented with 0,...