Sensor material characterisation for magnetometer application

Pengukuran dan gangguan medan magnet arus terus dan arus ulang-alik memerlukan penderia medan magnet yang mempunyai kepekaan yang tinggi dan stabil. Untuk menghasilkan penderia tersebut, ciri-ciri bahan magnet yang baik telah dikenalpasti. Beberapa jenis bahan magnet yang berbeza telah digunakan untuk mengkaji ciri-ciri dan kesannya terhadap medan magnet. Teras gelang yang diperbuat daripada bahan-bahan magnet tersebut direkabentuk dengan dimensi yang sama bagi membolehkan perbandingan dibuat dengan mudah. Selain itu, rod tunggal dan berkembar juga telah digunakan sebagai teras penderia fluxgate, untuk melihat prestasi setiap jenis penderia tersebut. Kedua-dua penderia tersebut telah diuji dengan menggunakan dua sumber bahan magnet iaitu bar magnet tetap dan solenoid dengan diameter dawai yang berbeza. Isyarat keluaran bagi setiap penderia fluxgate seterusnya diproses bagi mengenalpasti hubungannya dengan ketumpatan medan magnet

Vitamin A downregulating Bcl-2 and TGF-? expression during colon cancer in AFB1-induced female rats

Aflatoxin B1 (AFB1) is the most toxic and is usually predominant. Aflatoxins are not only contaminate our food stuffs, but also are found in edible tissues, milk and eggs. The present study designated to clarify the immunomodulatory effect of vitamin A and if it could ameliorate the cancerous effects of AFB1 on histopathological, ultrastucture and immunohistochemical changes of rat colon. Group (I): Animals of this group was normal control. Group (II): Rats of this group were orally administered vehicle 50% dimethylsulfoxide. While, animals in Group (III) were administered 132 IU Vitamin A, and rats in Group (IV) were administered 0.05 ?g/kg AFB1 dissolved in 50% dimethylsulfoxide for 14 weeks. Group (V): Animals of this group were administered AFB1 with Vitamin A. AFB1 administration caused colon damage characterized by aberrant crypt foci, which authenticated with the increase in mucous production, Bcl-2 and TGF-? expression. The immunological effect of vitamin A appeared in the improved histological picture of the colon tissue and the decrease in Bcl-2 and TGF-? expression. This is the first study to report the immunomodulatory effect of vitamin A on Bcl-2 and TGF-? in AFB1-induced colon cancer. Keywords: Colon cancer - Aflatoxin B1- Vitamin A- Bcl-2 - TGF-? - young female rats

Weak Isospin Violations in Charged and Neutral Higgs Couplings from SUSY Loop Corrections

Supersymmetric QCD and supersymmetric electroweak loop corrections to the violations of weak isospin to Yukawa couplings are investigated. Specifically it involves an analysis of the supersymmetric loop corrections to the Higgs couplings to the third generation quarks and leptons. Here we analyze the SUSY loop corrections to the charged Higgs couplings which are then compared with the supersymmetric loop corrections to the neutral Higgs couplings previously computed. It is found that the weak isospin violations can be quite significant, i.e, as much as 40-50% or more of the total loop correction to the Yukawa coupling. The effects of CP phases are also studied and it is found that these effects can either enhance or suppress the weak isospin violations. We also investigate the weak isospin violation effects on the branching ratio $BR(H^-\to\bar t b)/ BR(H^-\to \bar\nu_{\tau}\tau^-)$ and show that the effects are sensitive to CP phases. Thus an accurate measurement of this branching ratio along with the branching ratio of the neutral Higgs boson decays can provide a measure of weak isospin violation along with providing a clue to the presence of supersymmetry.Comment: 20 pages, 9 figure

Lossy/Lossless Floating/Grounded Inductance Simulation Using One DDCC

In this work, we present new topologies for realizing one lossless grounded inductor and two floating, one lossless and one lossy, inductors employing a single differential difference current conveyor (DDCC) and a minimum number of passive components, two resistors, and one grounded capacitor. The floating inductors are based on ordinary dual-output differential difference current conveyor (DO-DDCC) while the grounded lossless inductor is based one a modified dual-output differential difference current conveyor (MDO-DDCC). The proposed lossless floating inductor is obtained from the lossy one by employing a negative impedance converter (NIC). The non-ideality effects of the active element on the simulated inductors are investigated. To demonstrate the performance of the proposed grounded inductance simulator as an example, it is used to construct a parallel resonant circuit. SPICE simulation results are given to confirm the theoretical analysis

Relaxation of the Dynamical Gluino Phase and Unambiguous Electric Dipole Moments

We propose a new axionic solution of the strong CP problem with a Peccei-Quinn mechanism using the gluino rather than quarks. The spontaneous breaking of this new global U(1) at 10^{11} GeV also generates the supersymmetry breaking scale of 1 TeV (solving the so-called \mu problem at the same time) and results in the MSSM (Minimal Supersymmetric Standard Model) with R parity conservation. In this framework, electric dipole moments become calculable without ambiguity.Comment: Typos corrected and a footnote added, 10 p

A Simple Photometer as a Helping Device in Measuring Blood Glucose

Measurement of non-invasive blood glucose is one way to increase the frequency of self-monitoring of blood glucose (SMBG). For NIR reflectance spectroscopy, its application in non-invasive constrained by high value of standard error of prediction. The mean standard error of prediction was 25 mg/dL. Theoretically, NIR reflectance spectroscopy still can be used to predict blood glucose levels in certain conditions such as hypoglycemia (<55 mg/dL), controlled fasting blood glucose (FBG) (70-115 mg/dL), and hyperglycemia (>225 mg/dL), which the difference between the three conditions is more than 25 mg/dL. The results showed that there are significant differences in standards values of photometer measurement between controlled FBG and hyperglycemic conditions (P = 0.002). The results also showed that the photometer can be used to assist the monitoring of blood glucose in FBG under control and hyperglycemic conditions. It can be seen from the average percentage of the daily controlled FBG conditions in patients conducting SMBG in photometer-assisted compared to in patients only use SMBG once a day (28% versus 18%, P = 0.344)

Prevalence of Smear Positive Pulmonary Tuberculosis and its Associated Risk Factors among Patients Attending Nekemte Referral Hospital, Western Ethiopia

Tuberculosis (TB), one of the widest spread infectious diseases, is the leading cause of death in the world. TB is one of the major causes of morbidity and mortality in the horn of Africa with Ethiopia carrying a heavy burden; it is the third most populous country in Africa. The aim of this study is to determine the prevalence of smear positive pulmonary TB (PTB) and its associated risk factors among TB suspected patients attending Nekemte Referral Hospital. Oromia Region State, Western,  Ethiopia. A cross sectional study was conducted among 170 TB suspected patients attending Nekemte Referral Hospital from April 1 to May 15, 2012. Convenience sampling technique was used to select the study subjects. The sputum sample was collected and examined following national guide line for diagnosis of TB using direct Ziehl – Nelson staining and sodium hypochlorite concentration techniques. To collect data related to associated risk factors for PTB, pretest structured question was employed. The collected data was analyzed using SPSS version 16 and described using descriptive statistic and binary logistic regression modeling. The prevalence of smear-positive PTB is 9.41% and 15.88% by direct and sodium hypochlorite concentration Ziehle-Nelson staining technique, respectively. Factors significantly associated with smear-positive PTB were level ofeducation primary (AOR=17.78) and secondary education (AOR=736.19), occupation of merchant (AOR =0.03), sex male (AOR= 0.089), marital status of married (AOR=0.26), monthly income between 500-1000 (OR 0.002), urban residence (AOR= 0.39) and having close contact history with TB patient (OR=AO.113). The prevalence of Smear positive PTB is high at the study area and it is mostly associated with soci-demographic factorsand close contact with TB patient

Effect of connecting shunt capacitor on nonlinear load terminals

This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. Copyright @ 2003 IEEEThe use of terminal shunt capacitance has different effects on the displacement factor and distortion factor components of the power factor. These effects are considered for nonlinear loads with ideal supply, and also where the supply impedance exists but is small compared with the load impedance. Optimization of the displacement factor is found to result in reduction of the distortion factor to a minimum value

Mixing of the CP Even and the CP Odd Higgs Bosons and the EDM Constraints

The mixing among the CP even and the CP odd neutral Higgs bosons of MSSM by one loop induced effects in the presence of CP phases is investigated using three different mechanisms to satisfy the EDM constraints, i.e., a fine tuning of phases, a heavy sparticle spectrum, and the cancellation mechanism. It is shown that if a mixing effect among the CP even and the CP odd Higgs bosons is observed experimentally, then it is only the cancellation mechanism that can survive under the naturalness constraint.Comment: 14 pages, Latex and 4figures. A new paragraph is added and few more references. One figure is modified. To appear in Phys. Rev.

A Comparative Study of Positive and Negative Factorials

This paper present a comparative study of the various types of positive factorial functions, among which include the conventional factorial, double factorial, quadruple factorial, superfactorial and hyperfactorial. .............