Flow injection analysis for the photometric determination of promethazine-HCl in pure and pharmaceutical preparation via oxidation by persulphate using Ayah 3SX3-3D solar micro photometer

The first flow injection spectrophotometric method is characterized by its speed and sensitivity which have been developed for the determination of promethazine-HCl in pure and pharmaceutical preparation. It is based on the in situ detection of colored cationic radicals formed via oxidation of the drug with sodium persulphate to pinkish-red species and the same species was determined by using homemade Ayah 3SX3-3D solar flow injection photometer. Optimum conditions were obtained by using the high intensive green light emitted diode as a source. Linear dynamic range for the absorbance versus promethazine-HCl concentration was 0-7 mmol.L-1, with the correlation coefficient (r) was 0.9904 while the percentage linearity (r2%) was 98.09%. the L.O.Q was 3.97 µg/sample, while L.O.D (S/N=3) = 0.2407µg/sample (5 µmol.L-1) from the stepwise dilution for the minimum concentration of lowest concentration in the linear dynamic range of the calibration graph. The R.S.D% at 2 mmol.L-1 promethazine-HCl is less than 1% (eight replicates) using 150 µL sample volume. Throughput 30 sample.hr-1. The method was applied successfully for the determination of promethazine-HCl in pharmaceutical preparation. By using paired t-test it was shown that there was no significant difference between the proposed method and official method and on that basis the new method can be accepted as an alternative analytical method

Les tumeurs malignes primitives de l'intestin grêle: aspects cliniques et thérapeutiques de 27 patients

Les tumeurs malignes de l'intestin grêle (TMPIG) sont des tumeurs rares. Elles représentent 1 à 5% de toutes les tumeurs du tube digestif. Elles sont caractérisées par une hétérogénéité anatomopathologique et une symptomatologie pauvre et non spécifique entrainant ainsi un retard diagnostic, des difficultés Thérapeutiques et donc un mauvais pronostic. Nous rapportant les caractéristiques épidémiologiques, diagnostiques et thérapeutiques ainsi que la survie des patients atteints des TMIG au sein de l’institut national d’oncologie de Rabat. Il s’agit d’une analyse rétrospective des dossiers cliniques des 27 patients ayant le diagnostic de tumeurs malignes de l’intestin grêle admis dans notre institut entre 1998 et 2002. L’âge médian était de 46 ans (15-70 ans). Le délai médian de diagnostic était de 6 mois (0-96 mois). La douleur abdominale était le symptôme le plus fréquent (77.8%). L’étude anatomopathologique a montré 63% de lymphome non Hodgkinien, 14.8% d’adénocarcinome, 7.4% de tumeur stromale, 7.4% de carcinome neuroendocrine et 7.4% de sarcome intestinal. Vingt patients (76. 9%) ont eu une résection chirurgicale et 14 patients (53. 8%) ont eu une chimiothérapie en fonction du stade de la maladie et du type histologique. Après un recul médian de 11.6 mois, la survie globale après 12 mois était de 44.4% et la médiane de survie était de 11.6 mois. Les tumeurs malignes de l’intestin grêle sont rares. Leur diagnostic est tardif limitant ainsi la prise en charge thérapeutique curative. Les cliniciens doivent être avertis des symptômes gastro-intestinaux non spécifiques.Key words: Intestin grêle, tumeur maligne, diagnostic, chirurgie, chimiothérapie, survie, Maro

Effect of different concentrations of carbon source, salinity and gelling agent on in vitro growth of fig (Ficus carica L.)

Three in vitro experiments were conducted to study the effect of different concentrations of carbon source, salinity and gelling agent on number of new shoots, shoot length, fresh weight, and dry weight of fig (Ficus carica L.) to develop an efficient in vitro propagation method. The results show that there were no significant differences between the three carbon sources regarding number of newly formed shoots and their shoot lengths. However, there were some differences regarding fresh and dry weights. On the other hand, increased salinity concentrations reduced the number of the newly formed shoots, as well as, their shoot lengths. In addition, liquid media produced more shoots compared with the three solidifying agents used. However, there were significant differences among the concentrations of solidifying agents used.Keywords: Carbon source, salinity, gelling agent, fig (Ficus carica L.).African Journal of Biotechnology Vol. 12(9), pp. 936-940

Influence of Doping and Annealing on Structural, Optical and Electrical properties Amorphous ZnO Thin Films Prepared by PLD

The optical gap of the films was calculated from the curve of absorption coefficient (αhע)2 vs. hע and was found to be 3.8 eV at room temperature, and this value decreases from 3.8 to 3.58 eV with increasing of annealing temperature up to 473-673 K, and increases with the Ga doping. λ cutoff was calculated for ZnO and showed an increase with increasing annealing temperature and shifting to longer wavelength, while with doping the λcutoff shifted to shorter wavelength. The photoluminescence (PL) results indicate that the pure ZnO thin films grown at room temperature show strong peaks at 640 nm , but  GaO doped ZnO films showed a band emission in the yellow-green spectral region (380 to 450nm)

Electrical behavior and Optical Properties of Copper oxide thin Films

In this work the structural, electrical and optical Properties of CuO semiconductor films had been studied, which prepared at three thickness (100, 200 and 500 nm) by spray pyrolysis method at 573K substrate temperatures on glass substrates from 0.2M CuCl2•2H2O dissolved in alcohol. Structural Properties shows that the films have only a polycrystalline CuO phase with preferential orientation in the (111) direction, the dc conductivity shows that all films have two activation energies, Ea1 (0.45-0.66 eV) and Ea2 (0.055-.0185 eV), CuO films have CBH (Correlated Barrier Hopping) mechanism for ac-conductivity. The energy gap between (1.5-1.85 eV)

New Proteins Found Interacting with Brain Metallothionein-3 Are Linked to Secretion

Metallothionein 3 (MT-3), also known as growth inhibitory factor (GIF), exhibits a neuroinhibitory activity. Our lab and others have previously shown that this biological activity involves interacting protein partners in the brain. However, nothing specific is yet known about which of these interactions is responsible for the GIF activity. In this paper, we are reporting upon new proteins found interacting with MT-3 as determined through immunoaffinity chromatography and mass spectrometry. These new partner proteins—Exo84p, 14-3-3 Zeta, α and β Enolase, Aldolase C, Malate dehydrogenase, ATP synthase, and Pyruvate kinase—along with those previously identified have now been classified into three functional groups: transport and signaling, chaperoning and scaffolding, and glycolytic metabolism. When viewed together, these interactions support a proposed model for the regulation of the GIF activity of MT-3

Post-Anesthesia Evaluation: Using a Systems Based Team Approach to Achieve Compliance with CMS Interpretive Guidelines

Introduction: In December of 2009 the Center for Medicare and Medicaid Services (CMS) issued Revised Anesthesia Services Interpretive Guidelines. The revised post-anesthesia evaluation rules require assessment and documentation within 48 hours from the time the patient is moved into the recovery area for patients (includes outpatients prior to discharge as well as all inpatients). It applies to all patients who have had monitored anesthesia services, regional or general anesthesia. It must be performed and documented by a practitioner who is qualified to administer anesthesia and can be completed at any time and location as long as the patient has recovered sufficiently from anesthesia to answer the key questions related to the evaluation. Required key elements include assessment of mental status, pain, nausea and vomiting, temperature, hydration, respiratory and cardiovascular status. We describe the systems based team approach we used to achieve compliance with the 93% or higher post-anesthesia evaluation set by CMS and The Joint Commission. Background: UMass Memorial is a multi-campus medical center (A: Ambulatory Surgery Center (ASC), C: Tertiary University site, B: Memorial).Annually we provide anesthesia coverage for approximately 37,000 patients at 43 anesthetizing locations (44% inpatients and 56% outpatient procedures). The spread of Anesthesiology resources over three sites and the resident work hour restrictions posed a challenge to ensure compliance with CMS requirements for post-anesthesia evaluation and documentation. Methods: With input from the Anesthesiologists at all three sites we designed a template form that captured the required elements of the post-anesthesia evaluation and became part of the patient medical record (figure 1). We also modified the discharge process from the Post Anesthesia Care Unit (PACU). Previously our patients were discharged when the Alderete criteria were met using a standardized post-anesthesia order set. We modified this post-anesthesia order set to add post-anesthesia evaluation and documentation to the discharge criteria (figure 2). The Peri-anesthesia staff (PACU and Surgical Admission unit) was educated about these changes. We implemented a visual clue by the patient stretcher in the PACU when the patient was discharge ready. A member of the Anesthesia team completed the evaluation and documentation prior to patient discharge from the PACU. Patients who were admitted directly to the ICU or were not seen in the PACU were seen the following day by a member of the group. We used a systems based team approach with the help of the Anesthesiology staff and Peri-anesthesia nursing to implement this process across all three campuses. Random monthly chart audits were performed by our Quality department to assess our compliance with these CMS revised guidelines (20 charts at each site per month). Conclusion: We were able to achieve an average compliance rate of 82 to 93% across the medical center (figure 3)

Large Negative Poisson\u27s Ratio and Anisotropic Mechanics in New Penta-PBN Monolayer

The scarce negative Poisson\u27s ratio (NPR) in a two-dimensional (2D) material is an exceptional auxetic property that offers an opportunity to develop nanoscale futuristic multi-functional devices and has been drawing extensive research interest. Inspired by the buckled pentagonal iso-structures that often expose NPR, we employ state-of-the-art first-principles density functional theory calculations and analyses to predict a new 2D metallic ternary auxetic penta-phosphorus boron nitride (p-PBN) with a high value of NPR. The new p-PBN is stable structurally, mechanically, and dynamically and sustainable at room temperature, with experimental feasibility. The short and strong quasi sp3-hybridized B-N bond and unique bond variation and geometrical reconstruction with an applied strain allow p-PBN to inherit a high value of NPR (-0.236) along the (010) direction, the highest among any other ternary penta iso-structures reported to date. Despite having a small elastic strength, the highly asymmetric Young\u27s modulus and Poisson\u27s ratio along the (100) and (010) directions indicate large anisotropic mechanics, which are crucial for potential applications in nanomechanics and nanoauxetics

Techniques and software tool for 3D multimodality medical image segmentation

The era of noninvasive diagnostic radiology and image-guided radiotherapy has witnessed burgeoning interest in applying different imaging modalities to stage and localize complex diseases such as atherosclerosis or cancer. It has been observed that using complementary information from multimodality images often significantly improves the robustness and accuracy of target volume definitions in radiotherapy treatment of cancer. In this work, we present techniques and an interactive software tool to support this new framework for 3D multimodality medical image segmentation. To demonstrate this methodology, we have designed and developed a dedicated open source software tool for multimodality image analysis MIASYS. The software tool aims to provide a needed solution for 3D image segmentation by integrating automatic algorithms, manual contouring methods, image preprocessing filters, post-processing procedures, user interactive features and evaluation metrics. The presented methods and the accompanying software tool have been successfully evaluated for different radiation therapy and diagnostic radiology applications