Collisional Energy Loss of Non Asymptotic Jets in a QGP

We calculate the collisional energy loss suffered by a heavy (charm) quark created at a finite time within a Quark Gluon Plasma (QGP) in the classical linear response formalism as in Peigne {\it et al.} \cite{peigne}. We pay close attention to the problem of formulating a suitable current and the isolation of binding and radiative energy loss effects. We find that unrealistic large binding effects arising in previous formulations must be subtracted. The finite time correction is shown to be important only for very short length scales on the order of a Debye length. The overall energy loss is similar in magnitude to the energy loss suffered by a charge created in the asymptotic past. This result has significant implications for the relative contribution to energy loss from collisional and radiative sources and has important ramifications for the ``single electron puzzle'' at RHIC.Comment: 15 Pages, 11 figures, revte

Equational definability of addition in certain noncommutative rings

AbstractBoolean rings and Boolean algebras, though historically and conceptually different, were shown by Stone to be equationally interdefinable. Indeed, in a Boolean ring, addition can be defined in terms of the ring multiplication and the successor operation (Boolean complementation) xΛ= 1 + x (= 1 − x). In this paper, it is shown that this type of equational definability of addition also holds in a much wider class of rings, namely, any ring R with unity, not necessarily commutative, which satisfies the identity xn = xn+1f(x) where n is a fixed positive integer and f(x) is a fixed polynomial with integer coefficients. This class, of course, contains all finite rings with unity. As a corollary it is shown that if S ⊆ R and 1ϵ S, and if along with a, b ϵ S, ab ϵ S and a + 1 ϵ S, then S is a subring of R

Health Information Technology Adoption Among Health Centers: A Digital Divide in the Making?

This background paper describes the current status of efforts to implement health information technology in community health centers. It summarizes the benefits experienced by health centers that have pioneered the use of information technology and examines the challenges that have hindered wider adoption. The paper identifies a range of policy options that have been considered to promote broader use of information technology by health centers

A REVIEW ON MULTIPURPOSE MEDICINAL PROPERTIES OF TRADITIONALLY USED PSIDIUM GUAJAVA LEAVES

Psidium guajava is an important food crop and medicinal plant available in tropical and subtropical countries. P. guajava (Guava), belonging to the family of Myrtaceae. P. guajava Linn. (Guava) is used not only as food but also as folk medicine in subtropical areas around the world because of its pharmacologic activities. It contains important phytoconstituents such as tannins, triterpenes, flavonoid, quercetin, pentacyclic triterpenoid, guajanoic acid, saponins, carotenoids, lectins, leucocyanidin, ellagic acid, amritoside, beta-sitosterol, uvaol, oleanolic acid, and ursolic acid. Conventionally, guava is used for the treatment of various ailments such as antioxidant, hepatoprotective, anti-allergy, antimicrobial, antigenotoxic, antiplasmodial, cytotoxic, antispasmodic, cardioactive, anti-cough, antidiabetic, anti-inflammatory, and antinociceptive activities, supporting its traditional uses

Drug Dosing in Obese Patients: A Dilemma

Prevalence of obesity has increased over the past few years and is still growing. Usually obesity is accompanied by co-morbid conditions which may be caused because of it too. Due to this it is not unusual for a physician to have a lot of obese patients. Now, the dosing of the drug is a major issue. The dose given for normal patients may not be accurate for obese patients and it is highly likely to worsen the condition of the patient on account of the fact that pharmacokinetic parameters of an obese individual differs from a normal person. During clinical trials, the dose is calculated for normal weight patients, but the scenario changes in obese. Due to the lack of sufficient evidence, the dose modification poses to be a threat to patients especially the ones who are on drugs with a narrow therapeutic index. Various scales have been formulated to help but more research needs to be done to get precise doses

The Role of Libraries, Archives and Museums for Metaliteracy in Smart Cities: Implications, Challenges and Opportunities

The concept of smart cities is gradually gaining popularity within both academic and policy circles. Smart cities are intended to be self-sufficient via cutting-edge technologies, purposive innovations and inventions. However, while the technology is growing at an unexpectedly fast pace, one of the essential components of smart cities – humans –is lagging behind. The need for and scope of literacies to survive in smart cities pose challenges for their citizens. The evolution of human learning is not matching the pace of technology. There is a growing emphasis on developing learning capabilities through various ongoing literacies. This study aims to identify the range of literacies required in smart cities and the roles of libraries, archives and museums (LAM) in supporting citizen literacies for social and digital inclusion. The LAM sector is one of the major stakeholders in the digital transformation sphere and needs to work in collaboration with other stakeholders. Therefore, the LAM sector must identify the nature of required literacies, the roles and strengths of other stakeholders, and the opportunities to increase its presence in the process. This study systematically identifies and addresses these issues through a conceptual framework process and proposes future research directions for the LAM sector