Amino acid and peptide oxo-esters have played an important role in peptide chemistry for many years. Various amino acid esters are commonly used as protecting groups for peptide synthesis in solution. Moreover, activated phenyl ester derivatives have been used for chemical ligat…
"1981" Result
Sort By:
Our initial goal is to give a chain level description of the string topology loop product for a large class of spaces. This effort is described in two parts; the first uses Brown's theory of twisting cochains to obtain a model for the free loop space of a manifold and the second…
Longitudinal semicontinuous data, which usually contains a fair amount of zeros is common in biomedical and econometric research. Sometimes the existence of missing values in this kind of data creates additional difficulty in analysis. We have applied the two part random effect …
A significant cause of death and long term disability due to head injuries and pathological conditions is an elevation in the intracranial pressure (ICP). ICP measurements before and after the injury in a completely closed-head environment have significant research value, partic…
2,6-Di-tert-butyl-p-cresol, (DBPC), dibenzyl disulfide, (DBDS), and 1,2,3-benzotriazole, (BTA), are additives may be found concomitantly in the matrix of the power transformer oil. DBPC and DBDS act as antioxidants while, BTA is a corrosion inhibitor that protects copper conduct…
The increasing global reach of survey research provides sociologists with new opportunities to pursue theory building and refinement through comparative analysis. However, comparison across a broad array of diverse contexts introduces methodological complexities related to the d…
Several synthetic techniques have been established for the synthesis and ligation of peptide fragments, and the recent discovery of the decarboxylative ligation of α-ketoacids and N-alkylhydroxylamines has the means to advance chemical synthesis of proteins and peptides due to t…
This thesis presents the results and discussion of the investigation of the effects of Brönsted bases on the kinetics and thermodynamics of two proton-coupled electron transfer processes: the mediated oxidation of glutathione and the electrochemical oxidation of hydroquinone. Pr…
Both experimentally and theoretically, the study of two-dimensional electron systems in strong magnetic fields is one of the most interesting topics in condensed-matter physics. In the presence of strong magnetic fields and low temperature the fractional quantum Hall effect (FQH…
Sulfur dioxide (SO2 ), nitrate radical (NO3 ), and nitrous acid (HONO) play important roles in the atmosphere. SO2 is associated with the combustion of fossil fuels and contributes to acidification of the ecosystem, particulate sulfate formation and SO2 is an EPA regulated speci…
Atmospheric aerosols play an important role in climate forcing, through scattering and absorption of the incoming solar radiation. The extinction of light by the presence of atmospheric aerosols was studied using two first-principle models, and corresponding computer codes. In t…
In this work we quantify the effect of uncertainty in volatility in the prices and Deltas of an American and European put using probabilistic uncertainty analysis. We review the current methods of uncertainty analysis including worst case or scenario analysis, Monte Carlo, and p…
Metals play a crucial role in living systems. Iron, zinc, copper, molybdenum, and manganese are involved in many essential biological activities. Among transition metals, zinc after iron is the most abundant transition metal in the human body and the most abundant in the brain. …
The purpose of the present study was to identify factors that may contribute to business students in Lebanese universities having difficulty in introductory and advanced statistics courses. Two statistics courses are required for business majors at Lebanese universities. Student…
Ado's Theorem asserts that every real Lie algebra g of dimension n has a faithful representation as a subalgebra of gl(p; R ) for some positive integer p. The theorem does not offer any practical information about the size of p in relation to n, and p could be very large compare…
The propagation of optical vortices (OVs) in linear and nonlinear media is an important field of research in science and engineering. The most important goal is to explore the properties of guiding dynamics for potential applications such as sensing, all-optical switching, frequ…
The SuperTIGER (Trans-Iron Galactic Element Recorder) experiment was launched on a long-duration balloon flight from Williams Field, Antarctica, on December 8, 2012. The instrument measured the relative elemental abundances of galactic cosmic rays (GCR) in the charge ( Z ) range…
Aflatoxin M1 (AFM1 ), the major hydroxylated metabolite of aflatoxin B1 (AFB1 ), is considered possibly carcinogenic. It is primarily excreted through the milk and urine of animals that have consumed aflatoxin B1 contaminated feed. Overall, brief exposure to aflatoxins from the …
Noether symmetries provide conservation laws that are admitted by Lagrangians representing physical systems. For differential equations possessing Lagrangians these symmetries are obtained by the invariance of the corresponding action integral. In this thesis we find Noether sym…