Search results

Traditional analytical methods are often time-consuming and require bulky instruments, making their widespread implementation challenging. This paper aims to represent the principal concepts of biosensors as an introduction of this technology to readers and offers a comprehensive understanding of its functions.

The authors provide descriptions of the components, characteristics and advantages of biosensors along with the immobilization methods, followed by a brief discussion.

A biosensor is an analytical device comprising a specific biomolecule and a transducer in conjunction with an output system. The biomolecule recognizes a specific target which leads to a change in physicochemical properties of a system. This biorecognition phenomenon is later converted into a detectable signal by the transducer. Biosensors can essentially serve as rapid and cost-effective devices with excellent sensitivity and specificity for critical purposes in innumerable fields, ranging from scientific research to day-to-day applications.

Here, the authors explain and discuss the approaches and challenges with the aim of leading to an interest in biosensor development and improving their applications.

The purpose of this paper is to encompass the assessment of the effectiveness of the digital library and the value of multidisciplinary databases in terms of user preferences and use frequency by academic ranking.

This paper compares the results of two survey questionnaires carried out in 2002 and 2005. It examines the level of awareness by academic staff of digital library resources along with their use rate and to evaluate the preferences of faculty for specific electronic databases case studies were undertaken by means of separate questionnaires in both years.

Findings were consistent that positive results have been observed in two studies conducted in two years, 2002 and 2005. According to the results of the current survey, increased numbers of the faculty members of Ankara University know about the existence of the digital library. Another result of the survey is that many of the faculty members, although not all, use electronic databases. The most preferred databases have been Web of Science, Science Direct and Ebsco. When use of the electronic databases is analyzed, in respect of faculty rank and level of awareness, associate and assistant professors, assistants are ranked first.

The study presents the first case study in the field in Turkey that compares the current situation of the digital library usage with the initial survey data.

The purpose of this paper is to examine producer preferences for changing Farm Animal Welfare (FAW) levels in regards to sheep and goat husbandry in Bursa-Turkey.

The paper tests “panel estimators” in a stated preference data by using the payment card question format. Probit panels are employed to measure individual effects on FAW levels by considering producers’ willingness to accept. Three different FAW levels were identified for valuation as “base” level, “better” level, and the “best” level. The current study suggests a protocol with WTA(P) nomenclature to resolve complexity issues in FAW studies by investigating producers rather than consumers because the scenarios regarding FAW levels include quite technical and difficult topics which are vague to consumers.

If half of the total number of the sheep and goats in Turkey are assumed to be in bad animal welfare conditions, which are worse than base level, the non-use benefits of bringing them to at least the base level would be about US$130.3m. Figures would be 166.2m US$/year and 175m US$/year for “better” and “best” FAW conditions, respectively.

This paper provides a contribution to the existing literature by examining the producers’ responses to new FAW schemes. Also it helps policy makers to understand producers’ environmental behavior as well as their sensitivity to FAW schemes.