scholarly journals Alloplastic and Implant Materials for Bone Grafting: a Literature Review

2021 ◽  
Vol 11 (4) ◽  
pp. 343-353
Author(s):  
U. F. Mukhametov ◽  
S. V. Lyulin ◽  
D. Y. Borzunov ◽  
I. F. Gareev ◽  
O. A. Beylerli ◽  
...  
Keyword(s):  
Literature Review ◽  
Genetic Disorder ◽  
Maxillofacial Surgery ◽  
Surgical Techniques ◽  
Modern Medicine ◽  
Shunt Thrombosis ◽  
Current State ◽  
Property Evaluation ◽  
Osseous Regeneration ◽  
Osteoinductive Property

Bone reconstruction aft er trauma, infection, tumour or congenital genetic disorder is an important subject of modern medicine usually relying on bone graft ing materials. Autologous bone or autograft is still considered the “gold standard” most eff ective in bone defect reconstruction and osseous regeneration. Having the advantages of autograft ing, a series of issues remain related to a limited donor material, painful graft taking and the risk of putative complications (nonunions, graft rejection, infection, iatrogenic fractures, post-microsurgery arteriovenous shunt thrombosis, etc.). Th erefore, improved biomaterials are demanded to adequately meet the autograft criteria. Choosing optimal graft materials becomes relevant, aside to the rationale of selecting new surgical techniques. Th e osteoconductive and osteoinductive property evaluation in modern osteoplastic materials comprises a research avenue into optimal graft development for osseous correction in maxillofacial surgery, neurosurgery, traumatology and orthopaedics. Such biomaterials can be combined with alloplastic graft s to attain the required properties of osteoconduction, osteoinduction and osteogenesis. Th is analytic literature review focuses on current state-of-the-art in alloplastic graft ing that, in our opinion, grounds the progress of auto- and allograft innovative development.

scholarly journals Stereoelectroencephalography in children: a review

2018 ◽  
Vol 45 (3) ◽  
pp. E7 ◽  
Author(s):  
Allen L. Ho ◽  
Austin Y. Feng ◽  
Lily H. Kim ◽  
Arjun V. Pendharkar ◽  
Eric S. Sussman ◽  
...  
Keyword(s):  
United States ◽  
Literature Review ◽  
Surgical Techniques ◽  
The United States ◽  
Pediatric Epilepsy ◽  
3D Mapping ◽  
Diagnostic Measure ◽  
Current State

Stereoelectroencephalography (SEEG) is an intracranial diagnostic measure that has grown in popularity in the United States as outcomes data have demonstrated its benefits and safety. The main uses of SEEG include 1) exploration of deep cortical/sulcal structures; 2) bilateral recordings; and 3) 3D mapping of epileptogenic zones. While SEEG has gradually been accepted for treatment in adults, there is less consensus on its utility in children. In this literature review, the authors seek to describe the current state of SEEG with a focus on the more recent technology-enabled surgical techniques and demonstrate its efficacy in the pediatric epilepsy population.

scholarly journals A review of the management of single-suture craniosynostosis, past, present, and future

2019 ◽  
Vol 24 (6) ◽  
pp. 622-631 ◽  
Author(s):  
Mark R. Proctor ◽  
John G. Meara
Keyword(s):  
Surgical Techniques ◽  
Medical Knowledge ◽  
Modern Medicine ◽  
Adverse Outcomes ◽  
Past Century ◽  
The Past ◽  
Current State ◽  
Improved Outcomes ◽  
Single Suture ◽  
Skull Bones

BACKGROUNDCraniosynostosis is a condition in which 2 or more of the skull bones fuse prematurely. The spectrum of the disorder most commonly involves the closure of a single suture in the skull, but it can also involve syndromic diagnoses in which multiple skull bones and/or bones outside of the cranium are affected. Craniosynostosis can result in cosmetic deformity as well as potential limitations in brain growth and development, and the neurocognitive impact of the condition is just starting to be studied more thoroughly. Our knowledge regarding the genetics of this condition has also evolved substantially. In this review, the authors explore the medical and surgical advancements in understanding and treating this condition over the past century, with a focus on how the diagnosis and treatment have evolved.METHODSIn this review article, the authors, who are the leaders of a craniofacial team at a major academic pediatric hospital, focus on single-suture craniosynostosis (SSC) affecting the 6 major cranial sutures and discuss the evolution of the treatment of SSC from its early history in modern medicine through the current state of the art and future trends. This discussion is based on the authors’ broad experience and a comprehensive review of the literature.SUMMARYThe management of SSC has evolved substantially over the past 100 years. There have been major advances in technology and medical knowledge that have allowed for safer treatment of this condition through the use of newer techniques and technologies in the fields of surgery, anesthesia, and critical care. The use of less invasive surgical techniques along with other innovations has led to improved outcomes in SSC patients. The future of SSC treatment will likely be guided by elucidation of the causes of neurocognitive delay in these children and assessment of how the timing and type of surgery can mitigate adverse outcomes.

scholarly journals The Hyperloop System and Stakeholders: A Review and Future Directions

2021 ◽  
Vol 13 (15) ◽  
pp. 8430
Author(s):  
Lambros Mitropoulos ◽  
Annie Kortsari ◽  
Alexandros Koliatos ◽  
Georgia Ayfantopoulou
Keyword(s):  
Literature Review ◽  
Online Search ◽  
Future Directions ◽  
Transport Mode ◽  
High Speeds ◽  
Current State ◽  
Comprehensive Literature Review ◽  
Planning Processes ◽  
Holistic Assessment ◽  
The Eu

The hyperloop is an innovative land transport mode for passengers and freight that travels at ultra-high speeds. Lately, different stakeholders have been engaged in the research and development of hyperloop components. The novelty of the hyperloop necessitates certain directions to be followed toward the development and testing of its technological components as well the formation of regulations and planning processes. In this paper, we conduct a comprehensive literature review of hyperloop publications to record the current state of progress of hyperloop components, including the pod, the infrastructure, and the communication system, and identify involved EU stakeholders. Blending this information results in future directions. An online search of English-based publications was performed to finally consider 107 studies on the hyperloop and identify 81 stakeholders in the EU. The analysis shows that the hyperloop-related activities are almost equally distributed between Europe (39%) and Asia (38%), and the majority of EU stakeholders are located in Spain (26%) and Germany (20%), work on the traction of the pod (37%) and the tube (28%), and study impacts including safety (35%), energy (33%), and cost (30%). Existing tube systems and testing facilities for the hyperloop lack full-scale tracks, which creates a hurdle for the testing and development of the hyperloop system. The presented analysis and findings provide a holistic assessment of the hyperloop system and its stakeholders and suggest future directions to develop a successful transport system.

scholarly journals The concept of “Four Walls, Two Poles” in the lesions of the thalamus and ganglion regions: case report and literature review

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Haiyang Yang ◽  
Gang Bai ◽  
Yongli Zhang ◽  
Guolong Chen ◽  
Lei Duan ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Literature Review ◽  
Surgical Resection ◽  
Three Dimensional ◽  
Surgical Techniques ◽  
Surgical Approaches ◽  
Surgical Results ◽  
Case Presentation ◽  
Operation Process ◽  
Thalamic Glioma

Abstract Background There are few articles about the surgical techniques of thalamic glioma and the lesions in the basal ganglia area. According to three existing cases and the literature review (Twelve articles were summarized which mainly described the surgical techniques), we discuss the surgical characteristics of lesions of the thalamus and basal ganglia area and summarize the relevant surgical skills. Case presentation Of the three cases, two were thalamic gliomas and one was brain abscess in basal ganglia. According to the three-dimensional concept of the “Four Walls, Two Poles”, lesions of the thalamus and basal ganglia were surgically removed, and the operative effect was analysed by relevant surgical techniques. Surgical resection of the lesions of the thalamus and basal ganglia area according to the three-dimensional concept of the “Four Walls, Two Poles” has achieved good surgical results. Relevant surgical techniques, such as the use of retractors, the use of aspirators, the choice of surgical approaches, and the haemostasis strategy, also played an important role in the operation process. Conclusions In the presented three cases the three-dimensional concept of the “Four Walls, Two Poles” allowed for safe surgical resection of lesions of the thalamus and basal ganglia.

scholarly journals How to Improve Effectiveness of Renewable Space Heating Programs by Better Understanding Homeowner—Installer Interactions

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4625
Author(s):  
Alisa Freyre ◽  
Stefano Cozza ◽  
Matthias Rüetschi ◽  
Meinrad Bürer ◽  
Marlyne Sahakian ◽  
...  
Keyword(s):  
Literature Review ◽  
Financial Incentives ◽  
Heating System ◽  
Heat Pumps ◽  
Single Family ◽  
Heating Systems ◽  
Current State ◽  
Ex Post ◽  
Improved Technology

In this paper, we perform a literature review on the current state of knowledge about homeowners in the context of the adoption of renewable heating systems. Despite a considerable number of studies about homeowners, homeowner–installer interactions, and ways to improve the effectiveness of renewable heating programs, based on homeowner knowledge, have not yet been studied in much detail. To address these knowledge gaps, we conduct a qualitative study on single-family house owners who installed heat pumps and took part in a renewable heating program in Geneva, Switzerland. We cover homeowner practices in choosing installers and heating system types, homeowners’ feedback about heat pump installation and use, as well as their experience in participation in the renewable heating program. Based on the literature review and the findings from the interviews, we provide the following recommendations on how to increase the effectiveness of renewable heating programs: (a) support for homeowners should not be limited to financial incentives; (b) partnership programs with installers could help to increase the quality of installation services and enable homeowners to choose qualified installers; and (c) assisting homeowners in pre-qualification and ex-post analysis, in learning how to operate their renewable heating systems and in solving problems during the post-installation period, can contribute to improved technology reputation, which can, in turn, increase technology uptake by other homeowners.

scholarly journals Colvis—A Structured Annotation Acquisition System for Data Visualization

Information ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 158
Author(s):  
Pierre Vanhulst ◽  
Raphaël Tuor ◽  
Florian Évéquoz ◽  
Denis Lalanne
Keyword(s):  
Literature Review ◽  
Data Visualization ◽  
Use Cases ◽  
Acquisition System ◽  
User Engagement ◽  
Current State ◽  
Classification Framework ◽  
Technical Considerations

Annotations produced by analysts during the exploration of a data visualization are a precious source of knowledge. Harnessing this knowledge requires a thorough structure of annotations, but also a means to acquire them without harming user engagement. The main contribution of this article is a method, taking the form of an interface, that offers a comprehensive “subject-verb-complement” set of steps for analysts to take annotations, and seamlessly translate these annotations within a prior classification framework. Technical considerations are also an integral part of this study: through a concrete web implementation, we prove the feasibility of our method, but also highlight some of the unresolved challenges that remain to be addressed. After explaining all concepts related to our work, from a literature review to JSON Specifications, we follow by showing two use cases that illustrate how the interface can work in concrete situations. We conclude with a substantial discussion of the limitations, the current state of the method and the upcoming steps for this annotation interface.

Systematic Literature Review of the Natural Environment of the Coromandel Peninsula, New Zealand, from a Conservation Perspective

Conservation ◽  
2021 ◽  
Vol 1 (4) ◽  
pp. 270-284
Author(s):  
Vladyslav Zakharovskyi ◽  
Károly Németh
Keyword(s):  
New Zealand ◽  
Literature Review ◽  
Scientific Literature ◽  
Terrestrial Environment ◽  
Scientific Databases ◽  
Cultural Aspects ◽  
The North ◽  
Current State ◽  
Geological Evolution ◽  
Silver Mineralization

This research presents a literature review of published scientific literature on the Coromandel Peninsula, a well-known region of the northern part of the North Island of New Zealand. It contains many biological, geological, and historical features and is well known for beautiful scenery, resulting from a volcanic rock-dominated terrestrial environment influenced by oceanic factors at the coast. All these factors have combined to make the Coromandel a popular tourism destination for New Zealanders and offshore visitors. In researching the current state of knowledge of the region, we searched three scientific databases to define the main ways of studying the region. The results demonstrated a high interest in biological and environmental factors, reflected in the type and scale of conservation measures applied to flora and fauna of the region. Additionally, specificity of geological evolution was a highly examined subject, in the context of hydrothermal alteration as related to gold and silver mineralization resulting in extensive exploration and mining. Meanwhile, indigenous cultural aspects of the land were not recognizable as expected within Western scientific literature, even though the region contains sites recognized as some of the earliest Māori habitations. Therefore, we suggest future studies to expand our understanding of scientific, cultural, and social aspects of the region as applied to the field of conservation in the region.

China in Africa: a critical literature review

2016 ◽  
Vol 12 (1) ◽  
pp. 40-60 ◽  
Author(s):  
Abdoulkadre Ado ◽  
Zhan Su
Keyword(s):  
Literature Review ◽  
Design Methodology ◽  
Empirical Support ◽  
Future Research ◽  
Evidence Based ◽  
Content Type ◽  
Academic Literature ◽  
Current State ◽  
Comprehensive Literature Review ◽  
Critical Literature

Purpose – The purpose of this paper is to critically assesses the major contributions to the academic literature on China’s increased focus on Africa, from 2001 to 2011. It discusses the key trends concerning China’s presence in Africa and draws conclusions on the significance of the studies by emphasizing and contrasting the prevailing positions. Design/methodology/approach – Based on a qualitative approach using an integrative and comprehensive literature review, the authors performed a content analysis of high-impact, peer-reviewed papers. Findings – The paper questions and repositions some of the existing controversies. The results from existing studies remain questionable, requiring further clarification and more theoretical backing. It, moreover, highlights the notion that behind the explicit neutrality views of China’s presence in Africa, implicit assumptions may exist. These are often the differences in narratives conveyed by Western and Southern stakeholders. Research limitations/implications – Most of the conclusions drawn from this paper need to be re-explored and supported by additional research. This could be done by widening the scope of the analysis. Studies need to provide more empirical support for their assertions through quantitative data and evidence-based qualitative analyses – all within a framework that considers more cultural, social and historical dimensions. The paper also suggests that an institutionally based view appears most relevant in better explaining China in Africa. Originality/value – This paper reviews a decade of research on China in Africa and presents a snapshot of the current state of knowledge. It also raises concerns to be analyzed by future research and proposes new avenues for better understanding China’s presence in Africa.

scholarly journals Twenty Years of Communication Intervention Research With Individuals Who Have Severe Intellectual and Developmental Disabilities

2010 ◽  
Vol 115 (5) ◽  
pp. 364-380 ◽  
Author(s):  
Martha E. Snell ◽  
Nancy Brady ◽  
Lee McLean ◽  
Billy T. Ogletree ◽  
Ellin Siegel ◽  
...  
Keyword(s):  
Developmental Disabilities ◽  
Literature Review ◽  
Treatment Fidelity ◽  
Intervention Research ◽  
Communication Intervention ◽  
Future Research ◽  
Intellectual And Developmental Disabilities ◽  
Communication Performance ◽  
Current State ◽  
Communication Interventions

Abstract This literature review was conducted to evaluate the current state of evidence supporting communication interventions for individuals with severe intellectual and developmental disabilities. We reviewed 116 articles published between 1987 and 2007 in refereed journals meeting three criteria: (a) described a communication intervention, (b) involved one or more participants with severe intellectual and developmental disabilities, and (c) addressed one or more areas of communication performance. Many researchers failed to report treatment fidelity or to assess basic aspects of intervention effects, including generalization, maintenance, and social validity. The evidence reviewed indicates that 96% of the studies reported positive changes in some aspects of communication. These findings support the provision of communication intervention to persons with severe intellectual and developmental disabilities. Gaps in the research were reported as were recommendations for future research.

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