Results 81 to 90 of about 2,738,408 (222)

The first RNAi‐based biopesticide approved in the United States: regulatory implications for the European Union – the case of Ledprona (Calantha™)

Pest Management Science, EarlyView.
The approval of the RNA interference‐based biopesticide Ledprona (Calantha™) in the USA marks a milestone for RNA‐based crop protection. We discuss the regulatory implications for the European Union, highlighting opportunities, challenges, and the need for adapted risk assessment frameworks for RNA‐based plant protection products.
Aline Koch, Gabi Krczal
wiley   +1 more source

Correlation of two different devices for the evaluation of primary implant stability depending on dental implant length and bone density: An in vitro study.

PLoS ONE
Non-invasive objective implant stability measurements are needed to determine the appropriate timing of prosthetic fitting after implant placement. We compared the early implant stability results obtained using resonance frequency analysis (RFA) and ...
Jungwon Lee, Young-Jun Lim, Jin-Soo Ahn, Bongju Kim, Yeon-Wha Baek, Bum-Soon Lim   +5 more
doaj   +1 more source

Sliding Motions on Non‐Euclidean State Spaces: A Differential‐Geometric Perspective

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper extends sliding‐mode control theory to nonlinear systems evolving on smooth manifolds. Building on differential geometric methods, we reformulate Filippov's notion of solutions, characterize well‐defined vector fields on quotient spaces, and provide a consistent geometric definition of higher‐order sliding modes.
Fernando Castaños
wiley   +1 more source

Comparison of Delayed Implant Placement vs Immediate Implant Placement Using Resonance Frequency Analysis: A Pilot Study on Rabbits

, 2011
Ten identical implants were equally divided into 2 groups. In the immediate placement (control) group, implants were placed immediately following osteotomy preparation, and in the delayed placement (test) group, implants were placed 2 weeks following ...
G. Sivagami, Mohit T. Dudani, Ashish T. Kunnekel, E. M. Naidu, Chandrasekharan K. Nair   +4 more
core   +1 more source

Friction‐Aware Force‐Realizable Safety Control for Four‐Wheel Independently Steered and Driven Mobile Robots

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Safety‐critical control remains a major challenge for four‐wheel independently steered and driven (4ISD) mobile robots, where high‐accuracy path tracking and obstacle avoidance must be achieved under over‐actuated steering–driving coordination, tire–ground friction limits, and wheel‐torque constraints.
Ruitong Liu, Kenji Hashimoto
wiley   +1 more source

Spectral Submanifolds of Delay Systems: Control in Continuous and Discrete Time

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper presents both continuous‐time and discretization‐based approaches for constructing spectral submanifolds (SSMs) for time delay systems. The continuous‐time approach built upon sun–star calculus, reformulates the governing delay differential equation (DDE) as an operator differential equation (OpDE).
Bence Szaksz, Gábor Orosz, Gábor Stépán   +2 more
wiley   +1 more source

A comparision of two types of decalcified freeze-dried bone allograft in treatment of dehiscence defects around implants in dogs

Dental Research Journal, 2011
Background: Decalcified freeze-dried bone allograft (DFDBA) may have the potential to enhance bone formation around dental implants. Our aim in this study was the evaluation and comparison of two types of DFDBA in treatment of dehiscence defects around ...
Ahmad Moghareh Abed, Rasool Heidari Pestekan, Jaber Yaghini, Seyed Mohammad Razavi, Mohammad Tavakoli, Mohammad Amjadi   +5 more
doaj  

Primary stability of cementless threaded acetabular cups at first implantation and in the case of revision regarding micromotions as indicators [PDF]

, 2012
The primary stability of cementless total hip endoprosthesis is of vital importance for proximate, long-term osteointegration. The extent of micromotions between implant and acetabulum is an indicator of primary stability.
Buerkner, Andreas, Teske, Wolfram, Lichtinger, Thomas, Jansson, Volkmar, Fottner, Andreas, Schulze Pellengahr, Christoph von, Vogel, Tobias   +6 more
core   +1 more source

Towards Responsible Mining in Africa: Problematising the Environmental and Public Health Concerns of Artisanal and Small‐Scale Gold Mining in Ghana

Sustainable Development, EarlyView.
ABSTRACT There have been emerging media reports on the impact of cyanide and mercury use in artisanal and small‐scale gold mining (ASGM) operations on community health, especially among pregnant and non‐pregnant women, ASGM miners, and children in rural Africa.
Francis Arthur‐Holmes, Emmanuel Selasi Tomude, Steve Ahenkora Amoako   +2 more
wiley   +1 more source

A comparative clinical study of two different attachment systems and implant stability in implant-supported mandibular overdentures

Dental Journal
Background: Implant stability is crucial for the long-term durability of implant-supported removable dentures. Understanding the clinical impact of attachment systems such as Novaloc and Locator on stability is essential for their potential prognosis ...
Ammar Omar Belal, Moataz Mostafa Bahgat Elmahdy, Sayed Mohammed Mohammed El Masry, Mohamed Ezzat Elsayed   +3 more
doaj   +1 more source