Silicones

Moretto, Hans‐Heinrich; Schulze, Manfred; Wagner, Gebhard

doi:10.1002/14356007.a24_057

Cited by 71 publications

(88 citation statements)

References 120 publications

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“…Also, tendon volume was high in PRP groups with G4 at the top showing more voluminosity than G1 and control group with G3 at lowest position. The silicone conduit was more effective than the fascia, it may be that silicones also not allow microbiological growth (23).…”

Section: Discussionmentioning

confidence: 96%

Does PRP Improve the Tendon Gap Healing?

et al. 2019

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Background:The tendon repairs slowly. Platelets' alpha granules contain polypeptide growth factors that stimulate proliferation of normal connective tissue cells. The acute phase of inflammation is necessary for healing progress and fibroplasia. Platelet growth factors initiate and accelerate the inflammatory response by the host. Objectives: This study aimed to investigate if platelet-rich plasma (PRP) helps tendon gap healing. Methods: Aseptic surgery was performed on 24 mature guinea pigs in four groups to excise a 7-mm piece of the deep digital flexor (DDF) tendon of the right hind leg. In groups 1 and 2, the two ends of the severed tendon were sutured in the fascia conduit; group 2 received PRP injection into the conduit. In groups 3 and 4, the two ends of the severed tendon were sutured in a silicone tube conduit, and group 4 received PRP injection. After 42 days, the animals were euthanized and tendon samples were collected for further study. Results: The histopathological and stereological data showed that inflammation was far less in PRP-treated groups as they showed more fibroblastic proliferation. The synergistic effects of silicone tube and PRP injection showed the least inflammatory response. The diameter of collagen bundles and their volume were higher in the groups which received PRP in the silicone conduit. Conclusions: The present study found that PRP improved healing of tendon injury and silicone conduit served as good surgical technique with synergistic effect beside PRP.

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Section: Discussionmentioning

confidence: 96%

Does PRP Improve the Tendon Gap Healing?

et al. 2019

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“…The shape and dimensions of the nozzles can be seen in Figure . Silicon oil with a viscosity of 0.1 Pa s and a surface tension of 2.1 × 10 −2 J m −2 was used in this study, since silicon oil has been commonly used to simulate the slag foaming problem and the viscosity of 0.1 Pa s is also used in the literature . This value is also close to the level of the slag viscosity in a BOF process .…”

Section: Methodsmentioning

confidence: 99%

Study on Slopping Prevention in the BOF Steelmaking Process

Haglund²,

Ersson³

2016

steel research int.

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A new method of preventing slopping is proposed in this paper, by simply blowing gas at the top of the foam surface. The physical experiment results show that the foam height can be effectively decreased by the top blowing air. The maximum decrease of the foam height can reach around 70 mm with an initial foam height of 145 mm in the current setup, around a 48% decrease. The first 40 mm of the foam height is easy to destroy with a low flow rate from the top. However, it is increasingly difficult for a further decrease in the foam height. Different types of nozzles show a large difference in the role of destroying the foam. The air flow velocity from the nozzle outlet is found to be the key factor for a decreased foam height. Overall, three foam destruction mechanisms are proposed. When the top air flow velocity is small, the drag and pressure destruction mechanisms are the main reasons for the decrease in foam height. However, when a large top air flow velocity is used, the coalescence and breakup mechanisms due to a high turbulence and the shear force on gas bubble shape deformation become important.

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“…In this respect, the use of TMDS for the complete deoxygenation of plastic wastes is more attractive than Et3SiH, as it enables the formation of a valuable by-product, PDMS, 36 , which is widely used as a lubricant, as a food additive, as silicone in breast implants 37 , etc. 38 In addition to ethers and esters, Brookhart and co-workers demonstrated that catalyst 4 is able to reduce halogeno-alkyl compounds. 39,40 The reduction of halogenated polymers was thus attempted with the dechlorination of poly(vinyl chloride) PVC (scheme 6, eq.…”

Section: Scheme 3: Reductive Depolymerization Of Pes and Pet With Etmentioning

confidence: 99%

Depolymerization of Waste Plastics to Monomers and Chemicals Using a Hydrosilylation Strategy Facilitated by Brookhart’s Iridium(III) Catalyst

Monsigny

Berthet

Cantat

2018

ACS Sustainable Chem. Eng.

124

111

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Plastic waste management is a major concern. While the societal demand for sustainability is growing, landfilling and incineration of waste plastics remain the norm and methods able to efficiently recycle these materials are desirable. Herein, we report the depolymerization, under mild conditions, of oxygenated plastics in the presence of hydrosilanes with the cationic pincer complex [Ir(PCP)H(THF)][B(C6F5)4] (PCP = 1,3-(tBu2P)2C6H3)) as catalyst. The iridium catalyst, with a low loading (0.3-1 mol%), proves selective toward the formation of silyl ethers or the corresponding alkanes depending only on the reaction temperature. It is noteworthy that the depolymerization of real household waste plastics such as PET (from plastic bottles) and polylactic acid (PLA) from 3D printer filaments is not altered by the presence of dye or other plastic's additives.

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Silicones

Abstract: The article contains sections titled: 1. Introduction 2. Linear and Cyclic Polyorganosiloxanes … Show more

Cited by 71 publications

References 120 publications

Does PRP Improve the Tendon Gap Healing?

Does PRP Improve the Tendon Gap Healing?

Study on Slopping Prevention in the BOF Steelmaking Process

Depolymerization of Waste Plastics to Monomers and Chemicals Using a Hydrosilylation Strategy Facilitated by Brookhart’s Iridium(III) Catalyst

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