Evidence for a role of the reticulospinal system in recovery of skilled reaching after cortical stroke: initial results from a model of ischemic cortical injury

2015 ◽  
Vol 233 (11) ◽  
pp. 3231-3251 ◽  
Author(s):  
Wendy J. Herbert ◽  
Kimerly Powell ◽  
John A. Buford
Keyword(s):  
Cortical Injury ◽  
Cortical Stroke ◽  
Skilled Reaching ◽  
Initial Results

scholarly journals Microbial-Driven Stabilisation of Archaeological Iron Artefacts

2021 ◽  
Vol 2 (2) ◽  
pp. 274-292
Author(s):  
Sarah James ◽  
Edith Joseph
Keyword(s):  
Health And Safety ◽  
Chloride Content ◽  
Key Factors ◽  
Passivation Layers ◽  
Archaeological Iron ◽  
Initial Results ◽  
Sulphur Species ◽  
Partial Success ◽  
Made In

The instability of iron artefacts is rooted in salt contamination during burial and damages associated with exposure to alternative oxygen levels and high relative humidity once excavated. While a combination of chemical and mechanical treatments is utilised to remove the harmful ions (chlorides, sulphur species) and excess bulky corrosion products, these methods can be hazardous for conservation staff’s health, have limited success, or require extensive treatment times. Bio-based treatments provide a potentially greener alternative for removing damaging corrosion and creating biogenic mineral passivation layers, thus remediating concerns over costs, duration, and health and safety. Pseudomonas putida mt-2 (KT2440) is capable of utilising iron under certain conditions and for phosphating mild steel; however, applications have not been made in the cultural heritage sector. To address the potential of using bacteria for conservation purposes, Pseudomonas was assessed for both the bioremediation of salt contaminates and the production of a passivation layer suitable for iron artefacts, with specific conservation concerns in mind. Key factors for optimisation include the role of agitation, chloride content, and oxygen content on bacterial growth and biomineralisation. The initial results indicate a growth preference, not reliance, for NaCl and agitation with partial success of bioconversion of a mineral source.

scholarly journals The Effects of Amorphous Layer Regrowth on Carbon Activation in GaAs and InP

1993 ◽  
Vol 316 ◽  
Author(s):  
A.J. Moll ◽  
J.W. Ager ◽  
K.M. Yu ◽  
W. Walukiewicz ◽  
E.E. Haller
Keyword(s):  
Hole Concentration ◽  
Amorphous Layer ◽  
Free Hole ◽  
Initial Results

ABSTRACTThe effect of the Ga dose on the activation of implanted carbon in GaAs is determined. The free hole concentration is found to depend on the depth of the amorphous layer created by the Ga co-implant. Initial results on C implantation in InP indicate the behavior of C is very different in InP when compared to GaAs. The role of precipitation in reducing the activation of C in both GaAs and InP is discussed.

Social Media for Online Collaboration in Firms and Organizations

2016 ◽  
Vol 7 (1) ◽  
pp. 18-31 ◽  
Author(s):  
Enrico Franchi ◽  
Agostino Poggi ◽  
Michele Tomaiuolo
Keyword(s):  
Social Capital ◽  
Social Networking ◽  
Virtual Teams ◽  
Virtual Organizations ◽  
Social Aspects ◽  
Work Place ◽  
Online Networks ◽  
Networks Of Practice ◽  
Initial Results

Participation in social networks has long been studied as a social phenomenon according to different theories. In particular, the notion of social capital highlights a person's benefit due to his relations with other persons, including family, colleagues, friends and generic contacts. It may be important both for the individuals that are able to accumulate large amounts, and for organizations. Nowadays, social networking systems bring many acquaintances online, both in the private and working spheres. Some systems are used both at home, for leisure goals, and on the work place, professionally. In the vast majority of cases, social networking platforms are still used without corporate blessing. However, several traditional information systems, such as CRMs and ERPs, have also been modified in order to include social aspects. This article shows the role of social capital in the participation in online social networking activities, in the various cases of Virtual Organizations, Virtual Teams, and online Networks of Practice. It describes the present situation, which is characterized by great promises and mixed initial results, and some possible prospects.

Stability of Thermoelectromagnetic Convection

2006 ◽  
Author(s):  
Brent C. Houchens
Keyword(s):  
Numerical Solutions ◽  
Liquid Interface ◽  
Analytical And Numerical Solutions ◽  
The Stability ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Initial Results

The role of thermoelectromagnetic convection (TEMC) on the stability of a range of flows is investigated. Here we discuss the general features of TEMC, and describe experiments in which this effect is thought to have significance. The general formulation for TEMC at a solid-liquid interface is presented. Initial results are benchmarked with existing analytical and numerical solutions.

scholarly journals Changes in expression of GFAP, ApoE and APP mRNA and protein levels in the adult rat brain following cortical injury

2013 ◽  
Vol 65 (1) ◽  
pp. 255-264
Author(s):  
Natasa Loncarevic-Vasiljkovic ◽  
Vesna Pesic ◽  
N. Tanic ◽  
Desanka Milanovic ◽  
Aleksandra Mladenovic-Djordjevic ◽  
...  
Keyword(s):  
Brain Plasticity ◽  
Recovery Period ◽  
Potential Contribution ◽  
Cortical Injury ◽  
Adult Rat ◽  
Protein Levels ◽  
Adult Rat Brain ◽  
Apoe Protein ◽  
The Brain

The recovery period following cortical injury (CI) is characterized by a dynamic and highly complex interplay between beneficial and detrimental events. The aim of this study was to examine the expressions of Glial Fibrillary Acidic Protein (GFAP), Apolipoprotein E (ApoE) and Amyloid Precursor Protein (APP), all of which are involved in brain plasticity and neurodegeneration. Our results reveal that CI strongly influenced GFAP, ApoE and APP mRNA expression, as well as GFAP and ApoE protein expression. Considering the pivotal role of these proteins in the brain, the obtained results point to their potential contribution in neurodegeneration and consequent Alzheimer?s disease development.

scholarly journals Learning PR. Methodological and legitimation-based learning in PR — A theoretical approach and empirical findings

2016 ◽  
Vol 9 (2) ◽  
pp. 247-265
Author(s):  
Olaf Hoffjann ◽  
Michael Lohse
Keyword(s):  
Organizational Learning ◽  
Theoretical Approach ◽  
Online Survey ◽  
Theoretical Framework ◽  
Learning Opportunity ◽  
Initial Results

PR increases the reflexivity of organizations, thereby providing a central opportunity for learning. While this consideration is implicitly contained in many definitions and theories relating to PR, organizational learning has until now remained a “hidden topic” in international PR research. This is all the more surprising when we consider that learning is relevant to PR on two counts at least: first, the aforementioned role of PR as a central learning opportunity within an organization. PR identifies stakeholder demands and develops strategies to help ensure the legitimacy of the organization. This will be referred to as legitimation-based learning. Second, PR learns with respect to its own methods and skills. This will be referred to as method-based learning. This article will present a theoretical framework for legitimation-based and method-based learning. Then, the initial results of an online survey N = 121 that examines selected issues relating to this approach will be presented.

scholarly journals THE POTENTIAL ROLE OF LEGUMES IN THE REHABILITATION OF LEVELLED GOLD DREDGE TAILINGS, TARAMAKAU RIVER, N.Z.

1981 ◽  
pp. 206-209
Author(s):  
R.E. Fitzgerald
Keyword(s):  
Dry Matter ◽  
Radiata Pine ◽  
Dry Matter Production ◽  
Legume Species ◽  
Total N ◽  
Lupinus Polyphyllus ◽  
Pasture Legumes ◽  
Matter Production ◽  
Initial Results

Recent increases in the value of gold have led to renewed interest in gold mining - particularly by the dredging of the river flats bordering West Coast rivers. In any future licensing of such dredging, the rehabilitation of the "destroyed" land will be a major consideration. Nitrogen is the main nutrient limiting the growth of radiata pine on the gold dredge tailings; this paper outlines initial results of an exploratory legume-fertilizer trial on levelled tailings in the Taramakau River valley. Twelve legume species were grown with and without superphosphate (+ MO, Mg and K). Tree lucerne (Cytisus proliferus) , Russell lupin (Lupinus polyphyllus) and yellow tree lupin (L. arboreus) grew well without the application of fertilizer but the pasture legumes had substantially increased dry matter production where P was added - in white clover (Trifolium repens) dry matter production was increased from 5.4 to 8.9 t/ha; and total N was 180 and 310 kg N/ha. Tree nutrition and growth were greatly improved by association with a vigorous legume species, In addition, the presence of legumes improved the appearance of the tailings and with a pasture species grazing potential was created

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