Mercuric Ions (II) Uptake From Aqueous Solutions by Chelating Resin Containing Pendant Multidentate Ligand

The toxic nature and other adverse of the heavy metals lead to pollution and make it one of the most serious problems that affect certain sides of the environment. There are many heavy metal ions like the mercuric ions detected in industrial wastewaters originating from several factors such as from metal plating, mining activities, paint manufacture, etc. The above-mentioned ions isn't biodegradable and tends to be accumulated in living organisms, causing various diseases and disorders. Therefore, it must be removed from aqueous solution before discharge. In this paper, an experimental work it has been done regarding the optimal conditions of removing Hg (II) ions from water using chelating ion exchange resin namely XAD- & Pendant Multidentate Ligand Resin. The adsorption behaviour of mercury ions on XAD-& Pendant Multidentate Ligand Resin was studied as a function of the following variables: contact time, pH solutions, initial concentration of metal ions and resin dosage the adsorbent's maximum total adsorption capacity of for mercuric ions was: 0.82 mmol/g dry resin. The resin low affinity towards alkali and alkaline earth metals shows its use for samples that related to environment. The concluded results state that, XAD- & Pendant Multidentate Ligand Resin holds great potential for the purpose of removing mercuric ions from polluted wastewater

Thiol modified mycolic acids

Patient serum antibodies to mycolic acids have the potential to be surrogate markers of active tuberculosis (TB) when they can be distinguished from the ubiquitously present cross-reactive antibodies to cholesterol. Mycolic acids are known to interact more strongly with antibodies present in the serum of patients with active TB than in patients with latent TB or no TB. Examples of single stereoisomers of mycolic acids with chain lengths corresponding to major homologues of those present in Mycobacterium tuberculosis have now been synthesised with a sulfur substituent on the terminal position of the -chain; initial studies have established that one of these binds to a gold electrode surface, offering the potential to develop second generation sensors for diagnostic patient antibody detection.MMS and ADS wish to acknowledge support from the Government of Iraq through the award of PhD studentships.http://www.elsevier.com/locate/chemphysliphb2017BiochemistryChemistr

Comparative Study and Validation of Three Methods to Estimate Apparent Digestibility of Forages

Laboratory methods for predicting in vivo digestibility are affected by a diversity of factors, giving a high variation in results. It is important that each laboratory standardizes and validates the different methods in order to have confidence in their predictive capacity. The main objective of this study is to quantify the most important factors affecting the methods, to obtain the best predicting equations and to set the ranges where those methods fit better

Synchronizing Real and Predicted Synthetic Video Imagery for Localization of a Robot to a 3D Environment

A mobile robot moving in an environment in which there are other moving objects and active agents, some of which may represent threats and some of which may represent collaborators, needs to be able to reason about the potential future behaviors of those objects and agents. In previous work, we presented an approach to tracking targets with complex behavior, leveraging a 3D simulation engine to generate predicted imagery and comparing that against real imagery. We introduced an approach to compare real and simulated imagery using an affine image transformation that maps the real scene to the synthetic scene in a robust fashion. In this paper, we present an approach to continually synchronize the real and synthetic video by mapping the affine transformation yielded by the real/synthetic image comparison to a new pose for the synthetic camera. We show a series of results for pairs of real and synthetic scenes containing objects including similar and different scenes

Study sorption and desorption of Cd+2, Pb+2 ions by selected chelating resin to removal them from industrial and environmental wastes

A paper reports study of sorption and desorption behavior of Cd+2, Pb+2 ions on selected chelating resin consists of (P-DETATA). It had converted to sodium form by treated with basic solution (0.5 M, NaOH). Sorption studies of Cd+2 and Pb+2 ions were carried out by using batch-column processing system, and total capacity (mmoles of Mn+/g dry resin) was designed as a function of pH values, time periods and constant temperature. As well, desorption of Cd+2 and Pb+2 ions were achieved using diverse concentrations of diluted HCl at flow rate of 1 ml/min using column method. The results obtained indicate that the (P-DETATA) resin has higher affinity towards the metal ions under the study. This may give opportunity to use it for removing of Cd+2 and Pb+2 ions from industrial and environmental wastes

Blood CD34 Count in Myelofibrosis with Myeloid Metaplasia: A Prospective Evaluation of Prognostic Value in 94 Patients.

Abstract Background: Previously established adverse prognostic factors in myelofibrosis with myeloid metaplasia (MMM) include anemia (hemoglobin &lt; 10 g/dL), leukocytosis or leukopenia, presence of circulating blasts, and hypercatabolic symptoms (Dupriez et al. 1996;88:1013, Cervantes et al. BJH1998;102:684). Measurement of peripheral blood (PB) CD34 count has been shown to have diagnostic as well as possible prognostic value in MMM (Barosi et al. Blood2001;98:3249). Methods: A concurrent evaluation of PB CD34 count, bone marrow histology, and other clinical and laboratory parameters was conducted in a consecutive cohort of both newly and previously diagnosed patients with MMM. The study patients were prospectively followed for a minimum of 3 years in order to determine the prognostic value of PB CD34 count on survival, leukemic transformation, and disease progression from the time of PB CD34 analysis. Results: i. Patient cohort: A total of 94 patients (median age 61 years, range 26–81; 61 males) were accrued between January 2000 and August 2001 and subsequently followed through July 2004. MMM subtypes included agnogenic myeloid metaplasia (AMM; 58 patients), post-polycythemic myeloid metaplasia (PPMM; 12 patients), post-thrombocythemic myeloid metaplasia (PTMM; 12 patients), cellular phase MMM (8 patients) and hypocellular variant MMM (4 patients). At the time of study entry, 19 patients (20%) were newly diagnosed and 75 were established cases (median of 36 months from initial diagnosis, range 4–221). The Dupriez prognostic scores were 0 in 37 (39%), 1 in 37 (39%), and 2 in 20 patients (21%). ii) Clinical correlates of PB CD34 count: The median PB CD34 count for the entire study cohort was 54.7 x 106/L (range 0–5345) with 85% patients having increased values (&gt; 5 x 106/L). Cellular phase MMM and PPMM had significantly lower PB CD34 counts compared to the other MMM subtypes. On univariate analysis, PB CD34 count significantly correlated with Dupriez prognostic score, leukocyte count, circulating blast or immature myeloid cell percentage, and presence of hypercatabolic symptoms but not with age, gender, anemia (hemoglobin &lt; 10 g/dL), abnormal cytogenetics, disease duration, treatment history, splenectomy status, nucleated RBC count (NRBC), platelet count, or bone marrow histology including fibrosis, osteosclerosis, and angiogenesis. On multivariate analysis, only leukocyte count and PB blast or immature myeloid cell percentage retained their significance. iii) Prognostic evaluation of PB CD34 count : As of July 16, 2004, 43 patients (46%) have died and median duration of follow up in the surviving patients was 41 months (range 36–54). The projected overall survival at 5 years was 50%. On Cox proportional regression analysis, individual variables that correlated with inferior survival included anemia (hemoglobin &lt; 10 g/dL), advanced age, presence of hypercatabolic symptoms, abnormal cytogenetics, and increased leukocyte count, circulating blast percentage, Dupriez prognostic score, and NRBC. PB CD34 count displayed borderline significance (p=0.06). However, on multivariate analysis, only anemia, leukocytosis, and age retained prognostic significance. Similarly, PB CD34 count did not predict either subsequent leukemic transformation or disease progression. Conclusion: PB CD34 count is often but not always increased in MMM and correlates significantly with leukocytosis and degree of PB myeloid immaturity. The current prospective study does not support an independent prognostic value for PB CD34 count in MMM.</jats:p