Results 251 to 260 of about 16,681,036 (304)
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2020
The poly-L-lactic acid (PLLA) injection technique stimulates neocollagenesis and provides a natural look. In recent years there has been a growing interest for using this in other body areas such as the neck, chest, back of hands, lower breast region, thoraco-axillary fold, buttocks, arms and medial thighs.
Daniel Dal’Asta Coimbra +1 more
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The poly-L-lactic acid (PLLA) injection technique stimulates neocollagenesis and provides a natural look. In recent years there has been a growing interest for using this in other body areas such as the neck, chest, back of hands, lower breast region, thoraco-axillary fold, buttocks, arms and medial thighs.
Daniel Dal’Asta Coimbra +1 more
openaire +1 more source
Journal of Surgical Orthopaedic Advances, 2012
This study investigates a potential site of bacterial adherence, the implant surface, comparing titanium, poly-L-lactic acid (PLLA), and composite hydroxyapatite and poly-L-lactic acid (PLLA-HA) interference screws using a bioluminescent in vitro model.
Brendan D, Masini +4 more
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This study investigates a potential site of bacterial adherence, the implant surface, comparing titanium, poly-L-lactic acid (PLLA), and composite hydroxyapatite and poly-L-lactic acid (PLLA-HA) interference screws using a bioluminescent in vitro model.
Brendan D, Masini +4 more
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Poly-L-lactic acid in aesthetic medicine
Plastic Surgery and Aesthetic Medicine, 2023The fight against aging and age-related changes in the face and body skin in particular is one of the most topical areas of the current esthetic medicine. Age-related changes may affect any skin layer, and its aging is promoted by endogenous and exogenous factors. For instance, reduced levels of collagen and elastin in the dermis promote line formation;
S.V. Murakov +4 more
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Microbial degradation of poly-(l-lactic acid) oligomers
Polymer Degradation and Stability, 1998Biotic and abiotic degradation of poly-(l-lactic acid) (PLLA) oligomers of molecular weight (MW) 260–2880 g mol−1 has been studied in an aquatic aerobic headspace biodegradation test for six months. Water soluble/dispersable PLLA oligomers (MW 260–550 g mol−1) biodegraded at 25 °C and at 58 °C. Larger, crystalline and hydrophobic oligomers (MW 550–2880
Karjomaa, Sari +4 more
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Crystallization behavior of poly(l-lactic acid)
European Polymer Journal, 2005This article contains a detailed analysis of the crystallization behavior of poly(L-lactic acid) (PLLA). Crystallization rates of PLLA have been measured in a wide temperature range, using both isothermal and non-isothermal methods. The combined usage of multiple thermal treatments allowed to obtain information on crystallization kinetics of PLLA at ...
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Dermatologic Surgery, 2009
Injectable poly-l-lactic acid (PLLA) has been used to correct age- or disease-related facial volume deficits.This single-center, retrospective survey evaluated PLLA for cosmetic use.A questionnaire was mailed to 281 patients treated with PLLA 6 months or more previously. PLLA was reconstituted 4 hours or more before injection with 5 mL of sterile water
Nicholas J, Lowe +4 more
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Injectable poly-l-lactic acid (PLLA) has been used to correct age- or disease-related facial volume deficits.This single-center, retrospective survey evaluated PLLA for cosmetic use.A questionnaire was mailed to 281 patients treated with PLLA 6 months or more previously. PLLA was reconstituted 4 hours or more before injection with 5 mL of sterile water
Nicholas J, Lowe +4 more
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Poly-l-Lactic Acid for Neck and Chest Rejuvenation
Dermatologic Surgery, 2009Poly-L-lactic acid (PLLA) has been widely used in the enhancement of facial contours, but its use in nonfacial areas is rarely cited.To demonstrate the efficacy and safety of PLLA for neck and chest rejuvenation.Thirty-six patients with different degrees of cutaneous flaccidity, atrophy, and wrinkles in the neck and chest were treated with PLLA.
Rosemarie, Mazzuco, Doris, Hexsel
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General crystallization behaviour of poly(l-lactic acid)
Polymer, 1980Abstract A study has been made of the general crystallization behaviour of poly(L-lactic acid), PLLA, and is intended to be the basis for further work on fibre formation processes. PLLA is shown to be a semicrystalline polymer that may crystallize from the melt and from solution, and that may form fibres.
KALB, B, PENNINGS, AJ
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Isolation of thermophiles degrading poly(l-lactic acid)
Journal of Bioscience and Bioengineering, 1999A thermophile, strain 93, which degrades poly(L-lactic acid) (PLA) film was isolated from 144 soil samples obtained from different locations by cultivation using an enrichment culture medium at 60 degrees C. Under this temperature condition, the strain grew on PLA and the dissolved total organic carbon (TOC) concentration in the medium changed ...
K, Tomita, Y, Kuroki, K, Nagai
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Polymer Bulletin, 2011
Poly(l-lactic acid)/poly(l-lactic acid)-grafted SiO2 nanocomposites were prepared by in situ melt polycondensation, in which “free” poly(l-lactic acid) and poly(l-lactic acid)-grafted SiO2 nanoparticles were formed simultaneously. The maximum values of grafting ratio and grafting efficiency of poly(l-lactic acid) were up to 37.67% and 26.60 ...
Deling Li +3 more
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Poly(l-lactic acid)/poly(l-lactic acid)-grafted SiO2 nanocomposites were prepared by in situ melt polycondensation, in which “free” poly(l-lactic acid) and poly(l-lactic acid)-grafted SiO2 nanoparticles were formed simultaneously. The maximum values of grafting ratio and grafting efficiency of poly(l-lactic acid) were up to 37.67% and 26.60 ...
Deling Li +3 more
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