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Geyter, Christian De; Geyter, Maria De; Behre, Hermann M.

doi:10.1007/978-3-540-92963-5_23

Cited by 6 publications

(12 citation statements)

References 231 publications

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“…these properties are almost not affected. Such a trend is in good agreement with the restructuration effect reported in the literature [7,12,27].…”

Section: Influence Of Specificsupporting

confidence: 92%

“…WCA only increased from 30 deg to approximately 38 deg within 2 weeks [13]. Yet, specimens were kept from humidity, which can affect the ageing process [12]. Table 5 .shows the influence of preserving time on the PLA surface energy and its polar component.…”

Section: Influence Of Specificmentioning

confidence: 99%

“…Indeed, the higher the temperature, the more mobile the polymer chains, thus enhancing restructuration. On the other hand, it was shown that the pressure did not alter the ageing process [12,13].…”

Section: Introductionmentioning

confidence: 96%

“…This behavior, referred as an ageing process, depends not only on the plasma treatment but also on the environmental conditions. De Geyter et al studied the influence of moisture content: they concluded that a high relative humidity had detrimental effects on the polymer wettability due to the plasticizing effect of water [12]. Storage temperature was al.so reported to affect this phenomenon.…”

Section: Introductionmentioning

confidence: 97%

“…In addition, plasma proves to be an environment friendly process because it is solvent-free. However, many works pointed out its transient effects due to a surface restructuring process [7,12,13]. This behavior, referred as an ageing process, depends not only on the plasma treatment but also on the environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Modifications of the Polylactic Acid Surface Properties by DBD Plasma Treatment at Atmospheric Pressure

Vergne¹,

Buchheit²,

Eddoumy³

et al. 2011

Journal of Engineering Materials and Technology

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In this study, nitrogen plasma treatment at atmospheric pressure was used to modify the surface of poiylactic acid (PLA). especially /V.Î low surface energy and wettahility. which do not favor the interface adhesion with another material when blended. The dielectric hairier discharge (DBD) configuration was selected. Treatment time was varied, and induced chemical and topographical surface modifications were assessed. Attention was first focused on the effect of the treatment duration on the hydrophilicity and the topography of PLA. Results showed that plasma treatment enhanced the PLA surface hydrophilicity. The overall suiface roughness was also found to he increased. Moreover, both properties rose with increasing treatment time. Thus, according to the Wenzel's relation, the surface roughening contributed to the enhancement of the PLA hydrophilicity generated by plasma treatment. Then, the chemical surface changes induced by specific plasma activation were studied. Analyses pointed out the incorporation of hydrophilic groups such as nitrogen functional species after treatment. The stability of this treatment under air was also investigated: measurements showed that the hydrophobic recovery mainly occurred the first hours of storage.

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“…these properties are almost not affected. Such a trend is in good agreement with the restructuration effect reported in the literature [7,12,27].…”

Section: Influence Of Specificsupporting

confidence: 92%

Section: Influence Of Specificmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modifications of the Polylactic Acid Surface Properties by DBD Plasma Treatment at Atmospheric Pressure

Vergne¹,

Buchheit²,

Eddoumy³

et al. 2011

Journal of Engineering Materials and Technology

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Infertilität bei Männern

Nieschlag

2013

Bundesgesundheitsbl.

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Although male reproductive functions are impaired in about half of the infertile couples seeking offspring, even today the examination and treatment of the male partner continues to be neglected. Despite the lack of evidence for a "sperm crisis", so highly touted in the press, the public remains worried, while the fact that male fertility declines beyond the age of 40 years and is accompanied by increasing genetic risks for the offspring goes largely unnoticed. In addition to a thorough physical examination supplemented by imaging techniques such as ultrasonography of the scrotal organs, semen analysis according to WHO guidelines, hormone determinations, and cyto- and molecular genetic analyses form part of the routine investigation of the infertile male. Few disorders have become subjects of rational treatment, such as hypogonadotropic hypogonadism with gonadotropins or GnRH, treatment of sexually transmitted diseases by antibiotics, and microsurgical reconstruction of blocked seminal ducts. Early treatment of maldescended testes in boys or changing lifestyle (e.g., discontinuation of smoking) are important preventive measures. In the age of evidence-based medicine, most empirical treatments have been demonstrated to be ineffective. Thus, pregnancy rates from patients with varicocele who underwent long-practiced surgical or radiologic interventional therapy were not different from those of patients receiving counseling. At present, in cases of non-obstructive azoospermia or severe oligoasthenoteratozoospermia, intracytoplasmic sperm injection (ICSI) using single sperm derived from semen or extracted from testicular biopsy tissue (TESE) represents the most successful treatment modality, although it remains symptomatic and not curative.

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Litigating Federalism: An Empirical Analysis of Decisions of the Belgian Constitutional Court

Pellegrina¹,

Mot²,

Faure³

et al. 2017

European Constitutional Law Review

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Belgian Constitutional Court – Conflicts between regions, communities and the central government – Allocation of competences – Decisions with high political content – Degree of political alignment between the parties in litigation and judicial behaviour at the Court – Empirical testing – All decisions of the Belgian Constitutional Court, 1985-2012 – Alignment between the alleged political preferences of the judges and the political affiliation of the Petitioner increases the rate of success of the latter

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Assistierte Reproduktion

Cited by 6 publications

References 231 publications

Modifications of the Polylactic Acid Surface Properties by DBD Plasma Treatment at Atmospheric Pressure

Modifications of the Polylactic Acid Surface Properties by DBD Plasma Treatment at Atmospheric Pressure

Infertilität bei Männern

Litigating Federalism: An Empirical Analysis of Decisions of the Belgian Constitutional Court

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