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139 results for “case control study”
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Case ReportOpen accessAll words, across the recordImpacts of Biogas Digestate on Crop Production and the Environment: A Bulgarian Case StudyNicholas Kathijotes, Vera Petrova, Elena Zlatareva et al.The water-energy nexus reveals that large amounts of energy is stored in used water and can be used as an energy source. Anaerobic fermentation is an excellent ecological waste treatment and a way of producing low cost electrical and thermal energy. By using digestate resulting from biogas production instead of synthetic fertilizers derived from natural gas, we can save energy, … …American Journal of Environmental Sciences, Vol. 11, Issue 2 · 29 May 2015 · 7,553 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordTURNING WASTE INTO USABLE PRODUCTS: A CASE STUDY OF EXTRACTING CHITOSAN FROM BLUE CRABCamille Webster, Oghenekome Onokpise, Michael Abazinge et al.The purpose of this project was to develop a practical and cost efficient alternative to the current disposal of seafood waste in the North Florida region. Fortuitously, due to an unusually high turnover rate, this reconceptualization study may have turned seafood waste into a hot commodity. At least that is one conclusion one can draw from these findings. Indeed, over … …American Journal of Environmental Sciences, Vol. 10, Issue 4 · 24 Jun 2014 · 7,556 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordImmunologic Response to Hepatitis B Vaccine in Health Care Workers: A Screening Program and Evaluation of Some Host-Related Factors RoleMojtaba Varshochi, Roghayyeh MahmodianProblem statement: To evaluation the immunologic response to hepatitis B vaccine in health care’s workers and effects of host-related factors? Approach: In a cross sectional descriptive analytic study carried out on the medical staff of Tabriz Shahid Madani Hospital in 2009-2010, we evaluated the immunologic response of the staff to vaccination against Hepatitis B and factors affecting it. Results: The … …American Journal of Immunology, Vol. 7, Issue 1 · 17 Sep 2011 · 8,962 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordEffects of Fertilization and Clipping of Phlomis fruticosa L. on a Phryganic Ecosystem: The Case of Thesprotia, Northwest GreeceCh. Roukos, K. Papanikolaou, E. Nikolaou et al.This study examined the effectiveness of various shrub control treatments (N+P fertilization, clipping of Phlomis fruticosa and clipping combined with N+P fertilization), to reduce shrub cover and encourage the growth of palatable herbaceous vegetation. Dry matter production and Crude Protein (CP) content of palatable herbaceous vegetation were determined annually from 2004 to 2006. Experimental plots received rains of 691.7, 532.9 … …American Journal of Environmental Sciences, Vol. 4, Issue 6 · 31 Dec 2008 · 6,823 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordControl of Phenolic Compound Secretion and Effect of Growth Regulators for Organ Formation from Musa spp. cv. Kanthali Floral Bud ExplantsSoubir Titov, Salil Kumar Bhowmik, Ajoy Mandal et al.The study was undertaken to examine banana cv. Kanthali floral bud apex as an alternative source material for in vitro propagation because huge number of explants die due to microbial contamination in case of shoot tip explants. Contamination free cultures were established by treating the floral bud explants with 0.1% HgCl2 for 6 min. This study found that inflorescence tissues … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 3 · 30 Sep 2006 · 7,742 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordINTEGRATION OF POKA YOKE INTO PROCESS FAILURE MODE AND EFFECT ANALYSIS: A CASE STUDYA. P. Puvanasvaran, N. Jamibollah, N. NorazlinThe Failure Mode and Effect Analysis (FMEA) is a one of the requirements which was required by the Automotive Industries Action Group (AIAG) to all the automotive suppliers and manufacturers worldwide through the TS16949 Quality System. There were a lot of dicrepencies detected on implementing the FMEA which directly related to the user experinces and knowledge. The descrepencies cause the … …American Journal of Applied Sciences, Vol. 11, Issue 8 · 24 May 2014 · 13,236 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordSulfur Dioxide (SO2) Accumulation in Soil and Plant's Leaves around an Oil Refinery: A Case Study from Saudi ArabiaM. O. Al-Jahdali, A. S. Bin BisherThe accumulative levels of SO2 in soil and plant's leaves around an oil refinery were monitored. Four different sites around the refinery area were chosen; west, south east, north east and the northern side. The refinery southern side was not accessible. In addition to the soil samples, leaves samples of the dominant plants species Myoporum pictum were randomly collected from … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 7,790 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordExperimental Study of Parameters Influencing the Purity of Potassium Sulfate Fertilizer Produced from Jordanian Raw MaterialsMousa GougazehThe general objective of the present investigation was to make a contribution towards improving the purity of the produced potassium sulfate from (KCl, Arab Potash Company-Dead Sea) and (H2SO4, Jordanian Phosphate Company). The process parameters influencing the contamination of the poisoning chlorine within the product were experimentally investigated. The experiments were performed in a small-scale batch reactor equipped with a … …American Journal of Environmental Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 7,042 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordSynthesis of Optimal Trajectories with Functions Control at the Level of the Kinematic Drive CouplingsRelly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella et al.The development and diversification of machines and mechanisms with applications in all fields require new scientific researches for the systematization and improvement of existing mechanical systems by creating new mechanisms adapted to modern requirements, which involve increasingly complex topological structures. The modern industry, the practice of designing and building machinery is increasingly based on the results of scientific and applied … …Journal of Mechatronics and Robotics, Vol. 1, Issue 2 · 13 Dec 2017 · 6,376 accessesView PDFCite