Blind Carrier Phase Recovery for General 2{\pi}/M-rotationally Symmetric Constellations

This paper introduces a novel blind carrier phase recovery estimator for general 2{\Pi}/M-rotationally symmetric constellations. This estimation method is a generalization of the non-data-aided (NDA) nonlinear Phase Metric Method (PMM) estimator already designed for general quadrature amplitude constellations. This unbiased estimator is seen here as a fourth order PMM then generalized to Mth order (Mth PMM) in such manner that it covers general 2{\Pi}/M-rotationally symmetric constellations such as PAM, QAM, PSK. Simulation results demonstrate the good performance of this Mth PMM estimation algorithm against competitive blind phase estimators already published for various modulation systems of practical interest.Comment: 14 pages, 12 figures, International Journal of Wireless & Mobile Networks (IJWMN

Factor VIII haplotypes frequencies in Tunisian hemophiliacs A

<p>Abstract</p> <p>Background</p> <p>The development of inhibitors against factor 8 (F8) is the most serious complication of replacement therapy with F8 in children with severe hemophilia. It was suggested that mismatched F8 replacement therapy may be a risk factor for the development of anti-factor F8 alloantibodies. Recently four single nucleotide polymorphisms (SNPs) encoding six distinct haplotypes, designated H1 through H6, were studied in different populations. Two SNPs are components of the A2 and C2 immunodominant-inhibitor epitopes.</p> <p>The aim of this study is to determine the different types of haplotypes in relation with inhibitors developments and their frequencies in our Tunisian hemophiliac population.</p> <p>Materials and methods</p> <p>95/116 Tunisian patients with hemophilia A undergoing treatment at Hemophilia Treatment Center, Aziza Othmana hospital, participate in this study. Among them only six patients develop inhibitors. The four SNPs were amplified and sequenced.</p> <p>Results and Discussion</p> <p>In a total of 77 patients, we identified the H1, H2, H3 and the infrequent H5 haplotypes. The H1 and H2 haplotypes, which have the same amino acid sequence in the recombinant F8 molecules used clinically, are the most represented with the frequency of 0.763 and 0.157 respectively. This distribution is almost similar to that of Caucasians in which the frequencies are respectively 0.926 and 0.074, whereas it is 0.354 and 0.374 among Subsaharians. Four patients with inhibitors studied here have the H1 haplotype. For one patient who has a large deletion including the exon 10 we can't identify his haplotype. Theses frequencies may explain partially the low level of inhibitors in our patients.</p

Compost of poultry manure and olive mill wastes as an alternative fertilizer

We studied a compost made of poultry manure, olive mill wastes and mineral-rich wastewater, as an alternative fertiliser. The composts were of high quality, characterized by high levels of nutrients, a relatively low C/N ratio of 15–17 and a fertilizing value similar to that of conventional cattle manure, however without phytotoxicity. Field experiments showed an increase in potato production of 31.5–35.5 t/ha, compared to 30.5 t/ha using cattle manure. The use of olive mill wastewater did not have any negative impact on soil pH, electrical conductivity and phenols. The compost made of poultry manure and olive mill by products appears therefore as a promising ecological alternative to classical fertilizers

Bioactive phytochemicals from olive (Olea europaea) processing by-products

The olive sector is key in the Mediterranean countries and comprises olive oil extraction and table olive production, carried out by companies of different typologies and technological development. Due to increased awareness of the Food-Health-Environment Nexus, the popularity of olive oil has been steadily increasing worldwide, and consequently, more biowastes are produced (e.g., olive pomace and wastewaters). Comparatively to the olive oil industry, the table olives’ processing may generate highly variable amounts of wastewaters of different types, from close to zero waste, when olives are just dehydrated, as in Greek-style, to the serious environmental issues posed by the preparation of oxidized black olives (e.g., Californian-style). Most common industrial processes for olive oil and table olive obtainment generate biowastes that are pollutant and costly to treat. Such biowastes can be viewed as an environmental burden or a source for highly emanded chemicals, mainly due to their high content in phenolic compounds, which are highly valued by pharma and food industries, Therefore a growing number of publications and patents highlight the relevance of a circular economy approach in allowing increased profits through some innovation and process optimization. It is noteworthy that the circular approach aims at optimizing the resources (by re-using them and tackling waste) while minimizing the environmental impact of manufacturing operations (eco-economic decoupling). The current chapter focuses on olive by-products, presenting their compositions, highlighting the presence of certain bioactive compounds. We discuss herein prospective ways to valorize olive processing by-products in compliance with the 2030 agenda and with strict legislation on environmental protection. We believe that the information and proposed strategies are relevant to many stakeholders including smallholders in developing countries.info:eu-repo/semantics/publishedVersio

Bioaugmentation coupled with phytoextraction for the treatment of Cd and Sr, and reuse opportunities for phosphogypsum rare earth elements

International audienceThe environmental and health impacts caused by phosphogypsum (PG) make it necessary to carefully manage these wastes. Bioaugmentation of a PG-compost mix with Bacillus cereus was associated with Trifolium pratense or Helianthus annuus for the phytoextraction of metal trace elements (MTE). In hydroponics, MTE concentrations in sunflower shoots are higher than in clover; however, as opposed to clover, it regulates their accumulation. The MTE accumulation levels by plants cultivated in pots with the PG-compost mix are much lower than in hydroponics due to lower concentration in available MTE. The bacteria-plant coupling has served to raise MTE concentrations, especially for rare earth elements (REE), i.e., Ce, La, Nd, Y, in the AP of sunflower, by factors of 4.4, 38.3, 3.4 and 21, respectively, compared to non-bioaugmented control. The translocation factor was also increased for all MTE and is ranged between 1.1 for Sr and 6.8 for Y. Moreover, the presence of bacteria raises plant biomass by a factor of 3.7 for shoots and 2.9 for the roots as regards clover. Results showed that in addition to phytoextraction of REE elements, all providing the promise of some kind of economic opportunity, the dispersion of PG stockpiles dust and erosion should be reduced

Optimization of olive oil extraction wastes co composting procedure based on bioprocessing parameters

Organic waste generation has increased massively around the world during the last decades, especially the waste produced by the olive-growing industry. In order to manage the waste accumulation, composting process is an appropriate biotechnological solution which allows the waste organic matter biotransformation into a useful product the “compost”, used as an amendment for agricultural soils. The classical composting process presents several disadvantages; the major difficulty is to find the best feedstocks proportion to be used, leading to a final C/N ratio ranged between 12 and 15, a neutral pH, a humidity between 40% and 60% and organic matter (OM) content of 20–60%, at ambient temperature. Consequently, an accurate optimization of the composting process is needed for predicting the process parameters progress. To optimize these parameters and the waste rates initially mixed, the multiple regression method was used to determine the compost final parameters values, referring to the initial mixture of the different waste types. The best model filling the required standardized values included 49% of olive mill wastewater, 19.5% of exhausted olive mill cake, 15.5% of poultry manure, and 16% of green waste. This combination provides a pH of 7.5, a C/N ratio of 12.5 and an OM content of 44%. Such modelization would enshorten the composting required time