The spatiotemporal chemical characteristics of the water column in Linsley Pond, a freshwater lake in Connecticut, were studied from just before its stratification in April through the fall turnover in December. Two low-molecular-weight thiols, glutathione and 3-mercaptopropionic acid (MPA), were detected at nanomolar concentrations in the water column. GSH was detected (average concentrations ...

yield is estimated between 4000 and 5000 kg/ha (Gepts, 1993). Low yields can be attributed in part to the poor The diversity, structure, genetic flow, and evolutive relationships knowledge and limited use of the genetic diversity of within and among three wild–weedy–domesticated complexes and a wild populations of this species (Gepts and Debouck, wild population isolated from crops of common be...

The effects of different nodal positions and 6-benzylaminopurine (BAP) concentrations on shoot development from nodal explants of Hemidesmus indicus (L.) Br. (Iramusu) were investigated. The highest number of shoots per explant (2.57±0.97) was observed in 4 nodal position, while the longest shoot length (3.23± 0.52 cm) was achieved in 5 nodal position at 2 mg/L BAP with 0.1 mg/L Naphthalene Ace...

introduction cattle are a monotocous species meaning that, under most circumstances, a successful pregnancy results in the birth of one calf. twinning rate has been reported in dairy cows from 3 to 5 percent, which can be influenced by maternal age.the birth of twins is detrimental to the majority of beef and dairy cattle producer. financial loss arising from any of twinning has been reported i...

Ethnographic interviews were conducted with 28 pit bull aownerso to explore the sociological experience of having a dog with a negative image. Results indicate that the vast majority of respondents felt that these dogs were stigmatized because of their breed. Respondents made this conclusion because friends, family, and strangers were apprehensive in the presence of their dogs and because they ...

1-Introduction Damavand volcano was formed by explosive and non-explosive eruptions on the old eroded rock units (Mesozoic and older) of Central Alborz during the Quaternary period and formed two huge cone (Old and Young Damavand). Davidson et al. (2004) determined the time of Old-Damavand activity from 1800 to 800 thousand years ago by measuring Ar/Ar and U-Th/He methods. According to their ...

In modern legal systems, the litigated issues are numerous, the reasoning is complex, and the decision-making processes are highly regulated. Moreover, the decision-making integrates legal rules and policies with expert and non-expert evidence. What is needed is a means of representing, studying, and partially automating such complex legal reasoning. This paper presents a visual framework for m...

The author argues that to examine the relationship between technology use and student outcomes, the quality of technology use—how, and what, technology is used—is a more significant factor than the quantity of technology use—how much technology is used. This argument was exemplified by an empirical study that used both angles to examine the association between technology use and student outcome...

While courts depend on expert opinions in reaching sound judgments, the role of the expert witness in legal proceedings is associated with a litany of problems. Perhaps most prevalent is the question of under what circumstances should testimony be admitted as expert opinion. We review the changing policies adopted by American courts in an attempt to ensure the reliability and usefulness of the ...

This paper provides a critical perspective on the attempts to promote the use of information and communication technology (ICT) in teaching and learning in England. It describes the rationale given for the introduction of ICT in terms of its potential to impact on educational standards to contribute to developing a curriculum which has more vocational/social significance and, more generally, to...