66 research outputs found

    ASSESSMENT OF TOXIC MATERIALS IN SUNAF MARSH

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    Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  This paper presents studying the pollution of water in Al-Sunaf marsh (Alkhawisa village) by evaluating its water quality which has physical and chemical properties and comparing them with the world health organization standards (WHO1993). Results show that the pollutants (TSS, Salinity, Cl - , K + , Na + , Co, Cu, Zn, PO 4 -2 ) are not exceeding its guide levels. Also results show chronic effects of some chemical and physical properties, These Chronic effects result from the increasing of monthly concentrations for (Turbidity, Calcium, Chromium, Lead, Magnesium, Cadmium, Barium, Iron, Sulfate, chloride, Nickel and TDS) from its guide level which produce health and hazard effects on peoples who live in the boundaries of Sunaf marsh (Alkhawisa village), Results prevent the ability to use this water for different purposes

    ASSESSMENT OF TOXIC MATERIALS IN SUNAF MARSH

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    Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  This paper presents studying the pollution of water in Al-Sunaf marsh (Alkhawisa village) by evaluating its water quality which has physical and chemical properties and comparing them with the world health organization standards (WHO1993). Results show that the pollutants (TSS, Salinity, Cl - , K + , Na + , Co, Cu, Zn, PO 4 -2 ) are not exceeding its guide levels. Also results show chronic effects of some chemical and physical properties, These Chronic effects result from the increasing of monthly concentrations for (Turbidity, Calcium, Chromium, Lead, Magnesium, Cadmium, Barium, Iron, Sulfate, chloride, Nickel and TDS) from its guide level which produce health and hazard effects on peoples who live in the boundaries of Sunaf marsh (Alkhawisa village), Results prevent the ability to use this water for different purposes

    Growth And Characterization Of Rutile Tio2 Nanostructures Synthesized By Chemical Bath Deposition For Uv Photodetector Applications

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    Dalam projek ini, titanium dioksida (TiO2) fasa rutil berstruktur nano telah berjaya difabrikasikan menggunakan kaedah pemendapan rendaman kimia (CBD). Kajian ini bertujuan untuk mengfabrikasikan nanostruktur (Ns) TiO2 rutil menggunakan teknik kos rendah dan untuk memastikan keadaan yang optimum untuk pembangunan Ns TiO2 rutil yang seragam melalui kaedah CBD atas pelbagai substrat, seperti Si (111) jenis-p, nilam (Al2O3) satah-c, kaca bersalut FTO (FTO kaca), kaca dan kuarza. In this project, nanostructured rutile-phase titanium dioxide (TiO2) was successfully fabricated using the chemical bath deposition (CBD) method. This study aimed to fabricate uniform and high-quality rutile TiO2 nanostructure (Ns) using a low-cost technique and to determine the optimum conditions for uniform rutile TiO2 Ns development grown using the CBD method on various substrates, such as p-type Si (111), c-plane sapphire (Al2O3), FTO-coated glass (FTO glass), glass and quartz

    Real-time monitoring of the prototype design of electric system by the ubidots platform

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    In this paper, a prototype DC electric system was practically designed. The idea of the proposed system was derived from the microgrid concept. The system contained two houses each have a DC generator and load that consists of four 12 V DC lamps. Each house is controlled fully by Arduino UNO microcontroller to work in Island mode or connected it with the second house or main electric network. House operating mode depends on the power generated by its source and the availability of the main network. Under all operating cases, the minimum price of electricity consumption should satisfy as possible. Information between the houses about the operating mode and the main network state was exchanging wirelessly with the help of the RF-HC12. This information uploaded to the Ubidots platform by the Wi-Fi-ESP8266 included in the node MCU microcontroller. This platform has several advantages such as capture, visualization, analysis, and management of data. The system was examined for different cases to verify its working by varying the load in each building. All tested states showed that the houses transfer from one mode to another automatically with high reliability and minimum energy cost. The information about the main grid states and the sources of the houses were monitored and stored at the Ubidots platform

    Comparative Study between using of Biomass and Extract of Trichoderma Viride to Inducing Anticancer (TIA) Vincristine Production from Catharanthus Roseus in Vitro

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    This experiment was conducted in college of Agriculture , Al-Qasem Green university in 2015 ,to study the different of effects between using Trichoderma viride as biomass and as extract to induce the production of anticancer vincristine in vitroĀ  using MS medium supplemente with (2,4-D) and (BA) in (1+1) mg /L concentration to induce callusĀ  production then inoculated the callus directly with biomass of T.viride by single spore .In first method and adding extract of T.viride to the MS medium in the second method .The study include quantity and quality determination of vincristine by HPLC technique .Results revealed that the highest values was for the using of T.viride as biomass which gave(25.120)Āµg/g vincristine and the lowest value was for T.viride as extract which gave(15.346)Āµg/g vincristine .also results explained that adding of T.viride as biomass and the extract cause decrease in the fresh and dry weight of callus inducing from leaves of C.roseus and the highest decrease was to biomass method (200, 0.019) mg followed byĀ  extractmethod(340,0.031)mgrespectively. Keywords: Trichoderma viride in vitro, vincristine extract

    Using Board Games Activities in Developing Iraqi EFL Preparatory School Students' Performance in Reading Skills

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    Learning a second language can be challenging and demanding, especially for teachers, as they are required to continuously innovate and improve their teaching by integrating new strategies and techniques into the classroom environment. Hence, the present study intents to examine the effect of board games  activities on Iraqi Preparatory school studentsā€™ reading skills. A quantitative research method is adopted, and a sample of (30) preparatory school students is randomly chosen to exemplify the two sets of the research (the control and experimental groups). The study adopts a pre-test post-test design to measure the influence of the strategy. The first hypothesis is accepted, and the researcher concluded that indeed board games  activities help in developing the studentsā€™ reading skills; however, other studies could concur or find different results

    Comparison of antifungal activities of zinc, copper, cerium oxide, silver, gold, and selenium nanoparticles against clinical isolates of Aspergillus

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    Objective(s): Aspergillus species are found as opportunistic agents to cause a wide variety of clinical manifestations. Regarding the drug resistance emergence against Aspergillus species, new aspects of using nanoparticles (NPs) as antifungal agents are considerable. This study takes a new approach to biosynthesized NPs of zinc oxide, copper oxide, cerium oxide, silver, gold, and selenium influence on the clinical isolates of Aspergillus species.Materials and Methods: The antifungal activities of six NPs were examined against a total of 12 clinical isolates of Aspergillus species, including A. flavus (n=4), A. welwitschiae (n= 4), and A. fumigatus (n=4) based on the M38-A2 guideline.Results: According to minimum inhibitory concentration (MIC) values, NPs of ZnO, Ag, Au, and Se showed a significant antifungal effect. CuO-NPs and CeO2-NPs didnā€™t show an inhibitory effect against Aspergillus isolates. The MIC ranges of ZnO-NPs, Ag-NPs, Au-NPs, and Se-NPs were 128-512, 26-53, 21-85, and 6-26 Āµgā„mL for A. fumigatus; and 512->512, 26-53, 85, and 1-13 Āµgā„mL for A. welwitschiae, respectively. In addition, the MIC ranges of Ag-NPs and Se-NPs were 26-53 and 106-425 Āµgā„mL for A. flavus, respectively. However, A. flavus were not inhibited by NPs of ZnO and Au.Conclusion: Among the examined NPs, ZnO, Ag, Au, and Se showed a significant effect against Aspergillus isolates except for CuO and CeO2. However, Ag-NPs seemed to be the most effective nanoparticle against the Aspergillus species. Compared to other Aspergillus species, A. flavus was not inhibited by NPs of ZnO and Au

    Computations of drop collision and coalescence

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    Computations of drops collision and coalescence are presented. The computations are made possible by a recently developed finite difference/front tracking technique that allows direct solutions of the Navier-Stokes equations for a multi-fluid system with complex, unsteady internal boundaries. This method has been used to examine the boundaries between the various collision modes for drops of equal size and two examples, one of a 'reflective' collision and another of a 'grazing' collision is shown. From drops of unequal size, coalescence can result in considerable mixing between the fluid from the small and the large drop. This problem is discussed and one example showed. In many cases it is necessary to account also for heat transfer along with the fluid mechanics. We show two preliminary results where we are using extensions of the method to simulate such a problem. One example shows pattern formation among many drops moving due to thermal migration, the other shows unstable evolution of a solidification front

    Development of an intervention to improve AccesS to living-donor Kidney transplantation (The ASK study)

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    A living-donor kidney transplant (LDKT) is one of the best treatments for kidney failure. The UK's LDKT activity falls behind that of many other countries, and there is evidence of socioeconomic inequity in access. We aimed to develop a UK-specific multicomponent intervention to support eligible individuals to access a LDKT. The intervention was designed to support those who are socioeconomically-deprived and currently disadvantaged, by targeting mediators of inequity identified in earlier work. We identified three existing interventions in the literature which target these mediators: a) the Norway model (healthcare practitioners contact patients' family with information about kidney donation), b) a home education model, and c) a Transplant candidate advocate model. We undertook intervention development using the Person-Based Approach (PBA). We performed in-depth qualitative interviews with people with advanced kidney disease (n = 13), their family members (n = 4), and renal and transplant healthcare practitioners (n = 15), analysed using thematic analysis. We investigated participant views on each proposed intervention component. We drafted intervention resources and revised these in light of comments from qualitative 'think-aloud' interviews. Four general themes were identified: i) Perceived cultural and societal norms; ii) Influence of family on decision-making; iii) Resource limitation, and iv) Evidence of effectiveness. For each intervention discussed, we identified three themes: for the Norway model: i) Overcoming communication barriers and assumptions; ii) Request from an official third party, and iii) Risk of coercion; for the home education model: i) Intragroup dynamics; ii) Avoidance of hospital, and iii) Burdens on participants; and for the transplant candidate advocates model: i) Vested interest of advocates; ii) Time commitment, and iii) Risk of misinformation. We used these results to develop a multicomponent intervention which comprises components from existing interventions that have been adapted to increase acceptability and engagement in a UK population. This will be evaluated in a future randomised controlled trial

    First-in-class small molecule potentiators of cancer virotherapy

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    The use of engineered viral strains such as gene therapy vectors and oncolytic viruses (OV) to selectively destroy cancer cells is poised to make a major impact in the clinic and revolutionize cancer therapy. In particular, several studies have shown that OV therapy is safe and well tolerated in humans and can infect a broad range of cancers. Yet in clinical studies OV therapy has highly variable response rates. The heterogeneous nature of tumors is widely accepted to be a major obstacle for OV therapeutics and highlights a need for strategies to improve viral replication efficacy. Here, we describe the development of a new class of small molecules for selectively enhancing OV replication in cancer tissue. Medicinal chemistry studies led to the identification of compounds that enhance multiple OVs and gene therapy vectors. Lead compounds increase OV growth up to 2000-fold in vitro and demonstrate remarkable selectivity for cancer cells over normal tissue ex vivo and in vivo. These small molecules also demonstrate enhanced stability with reduced electrophilicity and are highly tolerated in animals. This pharmacoviral approach expands the scope of OVs to include resistant tumors, further potentiating this transformative therapy. It is easily foreseeable that this approach can be applied to therapeutically enhance other attenuated viral vectors
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