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The challenge of controlling floating offshore wind turbines arises due to the soft support structures and complex environmental excitations. Reducing the generator speed and power fluctuation, damping the motions of the floating platform and alleviating the fatigue loads at the tower base have been investigated in recent projects. This paper reviews and summarizes a selection of methodologies that have been discussed over the past years. These methods are then evaluated on the TELWIND-5MW-FOWT. First, linear analysis of the closed-loop with different control approaches is performed. Next, coupled aero-hydro-servo-elastic simulations with Bladed are carried out and evaluated. The motions and loads with different control approaches will be compared, advantages and limitations of each method will also be discussed.

In the present work, NiO nanoparticles are synthesized using chemical co-precipitation method which is an easy and cost-effective approach. Aqueous solutions of the precursors containing Ni(NO 3 ) 2 . 6H 2 O and NaOH pellets are calcined at 300 °C for 2 h. The structural, morphological, compositional, optical study, and thermal analysis of the synthesized powdered product was investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), UV–vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR) and thermo-gravimetric analysis. FTIR study shows the presence of functional groups in the synthesized NiO nanoparticles. The powder XRD pattern along with Rietveld refinement data reveals that the prepared sample is NiO with face-centered cubic (fcc) structure (Fm-3 m space group) having average crystallite size ranging from 4 to 6 nm. The optical band gap of the synthesized NiO nanoparticles (estimated from Tauc’s plot) is found to be ~ 3.20 eV which is less than the bulk NiO clearly showing red shift. This could be attributed due to the presence of chemical defects or vacancies resulting in the formation of some trap states.

Mustard is widely used in a variety of foods/food products to enhance the flavor and nutritional value that subsequently raise the risk of hypersensitivity reactions. Mustard allergy has been reported for many years and is increasing gradually especially in the areas where its consumption is comparatively higher, and it may be considered among the most important food allergies. A number of relevant clinical studies focused on mustard-induced allergic manifestations are summarized in the current review. In addition, the knowledge regarding the immunological as well as biochemical characteristics of mustard allergens that have been known till date and their cross-reactivity with other food allergens have also been discussed here. Notably, mustard may also be present as a hidden allergen in foods; therefore, it is important to recognize food products that may contain mustard as it may pose potential risk for the allergic individuals. Additionally, the better understanding of the underlying mechanism in mustard allergy is a prerequisite for the development of specific therapeutic procedures. Conclusively, mustard sensitivity should be routinely tested in patients with idiopathic anaphylaxis for the safety of the allergic patients.

PurposeWe investigated if substitutions in the ERCC1, ERCC2, and XRCC1 genes of the DNA repair pathway correlate with non-obstructive azoospermia and male infertility.MethodsA total of 548 azoospermic infertile males and 410 fertile controls were genotyped for XRCC1 399A > G, 280G > A, and ERCC1 C > A 3′ UTR and 541 azoospermic infertile males and 416 fertile controls were genotyped for ERCC2 751A > C using iPLEX Gold Assay. Meta-analyses were performed on XRCC1 399A > G (1022 cases and 1004 controls), ERCC1 C > A 3′ UTR (879 cases and 1059 controls), and ERCC2 751A > C (914 cases and 850 controls) polymorphisms to quantitatively estimate the significance of the association between these polymorphisms and the risk of infertility.ResultsStatistically significant association between ERCC2 751A > C SNP and male infertility was found using the codominant model (p = 0.03). Results of meta-analysis suggested a lack of correlation with male infertility risk, which could be due to pooling of studies from different ethnic populations. Due to limited the number of studies, a stratified analysis for different ethnic groups could not be performed.Conclusion (s)In conclusion, AA genotype of 751A > C SNP in ERCC2 correlated with a higher risk of male infertility and may contribute to an increased risk of azoospermia and male infertility in Indian men.