Phenomenological Aspects of TeV Scale Alternative Left-Right Model

We revisit the alternative left-right symmetric model, motivated by superstring-inspired $E_6$ model. We systematically analyze the constraints imposed by theoretical and experimental bounds on the parameter space of this class of models. We perform a comprehensive analysis of the Higgs sector and show that three neutral CP-even and two CP-odd Higgs bosons in addition to two charged Higgs bosons can be light, of ${\cal O}(100)$ GeV. We emphasise that our model has a potential to account for the recent Large Hadron Collider results for signal strength of Higgs decays. We also explore discovery signatures of the exotic down-type quark, which is one of the salient predictions of this model.Comment: 21 pages, 8 figure

Benzyl 2-(4-bromo­anilino)-4,4-dimethyl-6-oxocyclo­hex-1-enecarbodithio­ate: first triclinic polymorph

The six-membered cyclo­hexene ring in the title compound, C22H22BrNOS2, adopts an envelope conformation, with the C atom bearing the two methyl groups representing the flap. This atom deviates by 0.686 (4) Å from the plane passing through the other five atoms of the ring (r.m.s. deviation = 0.025 Å). The mol­ecular conformation is stabilized by an intra­molecular N—H⋯S hydrogen bond

Model for horizontal tube settlers

Tube settlers are classified into two configurations; the essentially horizontal and the steeply inclined. Theoretical and experimental studies were conducted on the basis of an extensive literature review to clarify some of the unsettled questions and a model for both design configurations was proposed, the Fadel Model;The model considers the effect of velocity profile variations ranging from uniform at the tube entrance to fully developed laminar flow profiles at the end of the transition length. Three methods for using the model were established: a computer program, design charts, and an equation;The experimental studies demonstrate the validity of the Fadel Model as a design method for determining particle settling length in circular tube settlers. The effect of sludge accumulation on the performance of the essentially horizontal tubes was studied both theoretically and experimentally;Theoretically, the essentially horizontal tube configuration was found to perform perfectly under conditions of sludge accumulation until the storage depth reached 40% of the tube depth. However, experiments showed that total sludge accumulations of up to 53% tube depth did not cause performance to deteriorate. Accordingly, a maximum allowable storage depth of 40% of the tube diameter is the recommended factor of safety for these horizontal tubes. An inlet and outlet arrangment for the essentially horizontal tubes also was proposed

Development of a Microwave Technique to Predict Moisture Content in Mortar

This thesis describes a simple microwave nondestructive free space method at 17.2 GHz to determine the moisture content of mortar cement. The method is simple, fast, contactless and accurate way to determine the moisture content in mortar. The measurement system consists of a 17.2 GHz dielectric resonator oscillator (DRO) as a microwave source, Power Meter as the detector, a pair of lens horn antenna to transmit and receive microwave signal. The 17.2 GHz frequency was chosen since the sensitivity to the moisture content is higher at this frequency compared to the low frequency. The Agilent Visual Engineering Environment software was used to control and retrieve data from the Power Meter. The microwave part of the measurement system is setup to determine the amplitude of transmitted wave (received powers). A comparison of the two received powers (with sample and without sample) gives an estimate of the attenuation of the sample. The actual moisture content was found by applying standard oven drying method. The calculation and selection of mixture model were discussed thoroughly and only the best performance of mixture model was selected. The dielectric mixture equation (Lichtenecker Mixture Model) has been chosen to calculate the complex permittivity of sample and also predicted the attenuation of sample due to the smallest mean error compared to other models like Kraszewski and Landau. An optimization technique was used to improve the Lichtenecker model so that the mean error between measured and predicted can be reduced. A calibration equation relating the measured attenuation and moisture content was established and the sensitivity of the sensor is 2.8147 dB/ % moisture content. An empirical model of moisture content was obtained from improved attenuation formula and was tested to the sample. The measured and predicted attenuation were found in good agreement within ±5% of mean relative error

Dilemma of HCV Infection in Renal Transplant Recipients

Hepatitis C virus, which usually starts during dialysis therapy, is currently the main cause of chronic liver disease in such population. The majority of patients acquired the disease through intravenous drug use or blood transfusion, with some risk factors identified. In this review we are dealing with the effect of renal transplantation on HCV infection and HCV-related complications after renal transplantation. Moreover, we are discussing the therapeutic options of HCV infection before and after renal transplantation, the best immunosuppressive protocol and lastly graft and patient survival in patients who underwent pretransplant management vs. those who were transplanted without treatment

n-Undeca­nyl 2-(4-bromo­anilino)-4,4-dimethyl-6-oxocyclo­hex-1-ene­carbodithio­ate

The six-membered cyclo­hexene ring in the title compound, C26H38BrNOS2, adopts an envelope conformation, with the C atom bearing the two methyl groups representing the flap. This atom deviates by 0.651 (3) Å from the plane passing through the other five atoms of the ring (r.m.s. deviation = 0.051 Å). The mol­ecular conformation is stabilized by an N—H⋯S hydrogen bond. The title compound is isomorphous with n-undeca­nyl 2-(4-chloro­anilino)-4,4-dimethyl-6-oxocyclo­hex-1-enecarbodithio­ate

Ecological Sustainability and Food Security : Challenges and Opportunities

Sir John Crawford Memorial Lecture delivered by Mohamed T. El-Ashry, Chief Executive Officer and Chairman, Global Environment Facility, during CGIAR Annual General Meeting 2002

The international aspects of the European common consolidated corporate tax base (CCCTB) and their interaction with third countries

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis examines the international taxation rules of the Common Consolidated Corporate Tax Base (CCCTB) and their interaction with third-country corporate tax practice. The aim is to assess the effectiveness of the CCCTB vis-à-vis third countries, with Egypt as a practical example. The CCCTB has the potential to reduce corporate tax obstacles faced by businesses in the EU in having to comply with up to twenty seven different domestic systems for determining their taxable profits. However, the international taxation rules of the CCCTB system are likely to have an impact on the corporate tax practice in third countries, and may conflict with existing bilateral tax treaties concluded between CCCTB-Member States and third countries. The discussion presents a detailed analysis of the CCCTB’s unilateral framework for the avoidance of double taxation and for the protection of the common consolidated tax base. It reveals that, by means of ordinary credit and exemption methods provided in the CCCTB Directive, international double taxation will be eliminated in relation to third countries. Furthermore, the CCCTB’s anti-abuse rules are effective in protecting the common tax base and in eliminating non-double taxation. Nevertheless, the unilateral measures are in conflict with a number of important provisions of bilateral tax treaties, based on the OECD Model, concluded between the potential CCCTB-Member States and third countries. Egypt exemplifies this – but the problem is generic. These conflicts between the CCCTB and OECD Model bilateral treaties are detrimental to the effective functioning of the CCCTB system vis-à-vis third countries, and need to be redressed. This thesis suggests a simple and practical solution - replacement of the bilateral tax treaties between CCCTB-Member States and third countries with a multilateral tax treaty to be concluded between every third country and all CCCTB-Member States