Results 41 to 50 of about 331,068 (282)
Nghiên cứu ảnh hưởng của các phụ gia đến tính chất của polypropylene
Tạp chí Khoa học và Công nghệ, 2023 Trong vài thập kỉ gần đây, nhu cầu sử dụng nhựa polypropylene trong nhiều ứng dụng ngày càng tăng do giá hợp lý, độ cứng cao, điểm võng nhiệt cao,... Do vậy, polypropylene được ứng dụng rộng rãi, như trong sản xuất bao bì, ô tô, xây dựng,...
Đoàn Thị Thu Loan +2 more
doaj
Shear behavior of RC beams prepared with basalt and polypropylene fibers
Case Studies in Construction Materials, 2022 Basalt and polypropylene fibers are relatively cheap, durable, and corrosion-resistant materials, and they can increase the shear strength of reinforced concrete (RC) beams. Although recent studies investigated the mechanical behavior of fibrous concrete,
Yasmin Murad, Haneen Abdel-Jabbar
doaj +1 more source
Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications
FEBS Open Bio, EarlyView.This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley +1 more source
Frontiers in Pharmacology, 2023 Background: This study sought to analyze the leakage rate, economic loss caused by leakage, leakage reasons, and usage of upright polypropylene infusion bags and non-polyvinyl chloride (PVC) infusion bags, two types of closed intravenous infusion ...
Yanchao Yin +6 more
doaj +1 more source
FEBS Open Bio, EarlyView.This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc +8 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To determine the concentration of glial fibrillary acidic protein (GFAP) in cerebrospinal fluid (CSF) and plasma in Alexander disease (AxD) and whether GFAP levels are predictive of disease phenotypes. Methods CSF and plasma were collected (longitudinally when available) from AxD participants and non‐AxD controls.
Amy T. Waldman +9 more
wiley +1 more source
Polypropylene fibres within concrete with regard to heat induced spalling and reduction in compressive strength [PDF]
, 2008 The paper examines the effect of various polypropylene fibre additions (Types 1 and 2 and different fibre volumes) to concrete with regard to explosive spalling when subject to high temperatures similar to that experienced in building or tunnel fires ...
Richardson, Alan
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Damping of the woodwind instrument reed material Arundo donax L [PDF]
, 2018 The viscoelastic properties (E', G', tanΦ, δ) of Arundo donax (AD) and a polypropylene-beech fiber composite (PPC) were measured from RT to 580K for various frequencies and strains.
Arlic, Uwe +4 more
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Arthritis Care &Research, EarlyView.Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead +4 more
wiley +1 more source
Black polypropylene non-woven textile as mulch in organic farming [PDF]
, 2009 Black polypropylene textile was used in potatoes by organic agriculture and it had positive effect on soil temperature (in the depth of 100 mmJ. Slightly higher soil temperatures under black polypropylene mulch in the vegetation oeriod after planting had
Dvorak, Petr +4 more
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