Results 31 to 40 of about 157,596 (247)

Key Technologies Measures for Drilling Ultra-Deep(>9 000 m)Horizontal Wells in Sichuan-Chongqing Region

open access: yesShiyou jixie
To provide experience and promote the development of deep and ultra-deep well drilling technology, taking Well SY001-H6 on the Shuangyushi structure in northwestern Sichuan Basin as an example, the characteristics of the formation and the problems ...
He Mingmin   +6 more
doaj   +1 more source

Fine-grained address space layout randomization on program load

open access: yesТруды Института системного программирования РАН, 2018
Program vulnerabilities are a serious security threat. It is important to develop defenses preventing their exploitation, especially with a rapid increase of ROP attacks. State of the art defenses have some drawbacks that can be used by attackers.
A. R. Nurmukhametov   +4 more
doaj   +1 more source

Rapid and Stereoselective Ring‐Opening Polymerization of rac‐Lactide Enabled by a Chiral Cyclopropenimine–Thiourea Catalyst

open access: yesAngewandte Chemie, EarlyView.
Chiral cyclopropenimine–thiourea organocatalysts enabled both high reactivity and precise stereocontrol in the ring‐opening polymerization of rac‐lactide. The bifunctional system exhibited a TOF up to 1,710 h−1 with Pm = 0.90 at 25°C, and achieved Pm = 0.99 at −78°C while maintaining a TOF of 16.3 h−1.
Sumin Lee   +8 more
wiley   +2 more sources

ROP/RAC GTPase signaling [PDF]

open access: yesCurrent Opinion in Plant Biology, 2007
ROP/RAC GTPases are versatile signaling molecules in plants. Recent studies of ROP/RAC regulators and effectors have generated new insights into the molecular basis of their functional versatility. Significant progress has also been made in our understanding of the mechanism for the localization of ROP/RAC signaling to specific domains of the plasma ...
Zhenbiao, Yang, Ying, Fu
openaire   +2 more sources

Usefulness of Children’s Hospital of Philadelphia ROP (CHOP ROP) model in the prediction of type 1 ROP

open access: yesIndian Journal of Ophthalmology, 2023
Purpose: Children’s Hospital of Philadelphia retinopathy of prematurity (CHOP ROP) model can be used to predict ROP, a leading cause of childhood blindness, using risk factors such as postnatal weight gain, birth weight (BW), and gestation age (GA).
Barkha Jain   +5 more
openaire   +3 more sources

Organoaluminium complexes derived from Anilines or Schiff bases for ring opening polymerization of epsilon-caprolactone, delta-valerolactone and rac-lactide [PDF]

open access: yes, 2017
Reaction of R¹R²CHN=CH(3,5-tBu₂C₆H₂-OH-2) (R¹ = R² = Me L¹H; R¹ = Me, R² = Ph L²H; R¹ = R2 = Ph L³H) with one equivalent of R³3Al (R³ = Me, Et) afforded [(L¹-³)AlR³₂] (L¹, R³ = Me 1, R³ = Et 2; L², R³ = Me 3, R³ = Et 4; L³ R³ = Me 5, R³ = Et 6); complex ...
Al-Khafaj, Yahya   +13 more
core   +3 more sources

Depolymerization and Reuse of Polycarbonates: Emerging Classes, Mechanisms and Challenges

open access: yesAngewandte Chemie, EarlyView.
This review collects the latest developments in the area of chemical and catalytic polycarbonate recycling strategies and includes the controlled degradation of similar types of macromolecules. Apart from the main strategies for deconstruction, the key mechanistic features of these depolymerization processes are also discussed together with the ...
Davide Rigo   +4 more
wiley   +2 more sources

Path-following analysis of the dynamical response of a piecewise-linear capsule system [PDF]

open access: yes, 2016
Acknowledgements The first author has been supported by a Georg Forster Research Fellowship granted by the Alexander von Humboldt Foundation, GermanyPeer ...
Liu, Yang   +3 more
core   +2 more sources

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor   +5 more
wiley   +1 more source

Postnatal Growth Trajectories and Neurodevelopmental Outcomes Following Bevacizumab Treatment for Retinopathy of Prematurity

open access: yesClinical Ophthalmology, 2022
David L Zhang,1 Hawke H Yoon,1,2 Raye-Ann O deRegnier,3 Jennifer Arzu,4 Safa Rahmani1,2 1Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; 2Division of Ophthalmology, Ann & Robert H.
Zhang DL   +4 more
doaj  

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