Critical factors limiting pollination success in oil palm: A systematic review

2019 ◽  
Vol 280 ◽  
pp. 152-160 ◽  
Author(s):  
Kevin Li ◽  
Teja Tscharntke ◽  
Barbara Saintes ◽  
Damayanti Buchori ◽  
Ingo Grass
Keyword(s):  
Systematic Review ◽  
Oil Palm ◽  
Critical Factors ◽  
Pollination Success

scholarly journals Measuring context-dependent memory in rodents: a systematic review and meta-analysis of important variables in the object-in-context task.

2021 ◽  
Author(s):  
Milou Sep ◽  
Marijn Vellinga ◽  
R. Angela Sarabdjitsingh ◽  
Marian Joëls
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Animal Experiments ◽  
Data Driven ◽  
Evidence Based ◽  
Critical Factors ◽  
Context Dependent ◽  
Set Up ◽  
Rats And Mice ◽  
Learning Trials

Environmental information plays an important role in remembering events. Information about stable aspects of the environment (here referred to as ‘context’) and the event are combined by the hippocampal system and stored as context-dependent memory. In rodents (such as rats and mice), context-dependent memory is often investigated with the object-in-context task. However, the implementation and interpretation of this task varies considerably across studies. This variation hampers the comparison between studies and - for those who design a new experiment or carry out pilot experiments – the estimation of whether observed behavior is within the expected range. Also, it is currently unclear which of the variables critically influence the outcome of the task. To address these issues, we carried out a preregistered systematic review (PROSPERO CRD42020191340) and provide an up-to-date overview of the animal-, task-, and protocol-related variations in the object-in-context task for rodents. Using a data-driven explorative meta-analysis we next identified critical factors influencing the outcome of this task, such as sex, testbox size and the delay between the learning trials. Based on these observations we provide recommendations to create more consensus in the set-up, procedure and interpretation of the object-in-context task for rodents. This could contribute to a more robust and evidence-based design in future animal experiments.

scholarly journals A Systematic Review of Severe Neurological Manifestations in Pediatric Patients with Coexisting SARS-CoV-2 Infection

2021 ◽  
Vol 13 (3) ◽  
pp. 410-427
Author(s):  
Lauren O’Loughlin ◽  
Nilo Alvarez Toledo ◽  
Leon Budrie ◽  
Randall Waechter ◽  
Joanna Rayner
Keyword(s):  
Systematic Review ◽  
Immune Response ◽  
Neurological Disorders ◽  
Respiratory Symptoms ◽  
Literature Search ◽  
Pediatric Patients ◽  
Neurological Manifestations ◽  
Critical Factors ◽  
Age Range ◽  
Inflammatory Syndrome

SARS-CoV-2 infection in children produces mild respiratory symptoms or no symptoms at all in most cases. Some pediatric patients develop a severe complication associated with high mortality, the multisystem inflammatory syndrome in children (MIS-C). In both scenarios, there are reports of neurological manifestations. This article aims to review the cases of pediatric patients with severe neurological issues and a coexisting positive SARS-CoV-2 test. A literature search was performed between March 2020 and May 2021. The results included the data from 41 studies, with 159 children with severe neurological manifestations, within an age range from 24 h to 17 years. The neurological disorders included 38 cases with stroke, 32 with encephalitis, 22 with encephalopathy, and 10 with Guillain–Barre syndrome. Sixty-five out of 159 cases with severe neurological manifestations were diagnosed with MIS-C. Direct neuroinvasion and the exaggerated immune response in some patients seem to be the most critical factors triggering these manifestations. Further research in the ongoing pandemic is needed to elucidate the precise mechanism.

scholarly journals Flavonoid Composition and Pharmacological Properties of Elaeis guineensis Jacq. Leaf Extracts: A Systematic Review

2021 ◽  
Vol 14 (10) ◽  
pp. 961
Author(s):  
Wai-Kit Tow ◽  
Asly Poh-Tze Goh ◽  
Usha Sundralingam ◽  
Uma Devi Palanisamy ◽  
Yasodha Sivasothy
Keyword(s):  
Systematic Review ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Total Phenolic ◽  
Palm Tree ◽  
Pharmacological Properties ◽  
Leaf Extracts ◽  
Flavonoid Composition ◽  
Elaeis Guineensis Jacq ◽  
Promising Source

The oil palm tree (Elaeis guineensis Jacq.) originates from West and Central Africa, and it is cultivated in Malaysia for its oil-producing fruits. Malaysia is the world’s second largest palm oil producer and the world’s largest exporter to date. Consequently, the Malaysian oil palm industry constantly generates a huge amount of biomass with the major contributor being the leaves. A large percentage of these leaves remain underutilized, making them a promising source of raw materials that can be converted into value-added products. The present review summarizes and discusses the flavonoid composition, total phenolic and flavonoid content, and the in vitro and in vivo pharmacological properties exhibited by the extracts of the leaves of E. guineensis. The purpose of this systematic review is to highlight the potential of valorizing the leaf extracts of the oil palm tree as pharmaceutical and cosmeceutical agents.

scholarly journals Policies for knowledge generation in the catch-up process

2021 ◽  
Vol 20 ◽  
pp. e021017
Author(s):  
Paulo Henrique Assis Feitosa
Keyword(s):  
Systematic Review ◽  
Critical Discussion ◽  
Context Dependence ◽  
Knowledge Generation ◽  
Critical Factors ◽  
Public Intervention ◽  
Closing The Gap ◽  
Catch Up

Public intervention to support knowledge generation is recognized as a fundamental strategy that enables the closing the gap between latecomers and forerunners economies. Evaluations and academic studies have been conducted on a wide variety of interventions and rapidly expanded what is known about these policies instruments. However, much of the evidence report conflicting results and can lead to misunderstandings about the potential of these interventions. This article offers a systematic review and a critical discussion of what the literature has to say about the effectiveness of these instruments. It is argued that learning about the effectiveness of interventions requires a capacity to seize and interpret its effects. Specifically, two critical factors are emphasized to understand the potential of these policies, which are their sequence of implementation and the context-dependence of interventions. Since none of these issues has been investigated in-depth, some aspects are discussed to guide future evaluations.

scholarly journals A systematic review of leadership styles, work engagement and organizational support

2020 ◽  
Vol 9 (4) ◽  
pp. 66-77
Author(s):  
Aida Mehrad ◽  
Jordi Fernández-Castro ◽  
Maria Pau González Gómez de Olmedo
Keyword(s):  
Systematic Review ◽  
Transformational Leadership ◽  
Leadership Styles ◽  
Transactional Leadership ◽  
Work Engagement ◽  
Organizational Support ◽  
Web Of Science ◽  
Organizational Factors ◽  
Google Scholar ◽  
Critical Factors

Work engagement is one of the critical factors at an organization, so considering some factors such as leadership styles and organizational support is important. Lack of attention to these factors can lead to undesirable environments for workers. The purpose of this study is to conduct a systematic review based on these variables. Data for this research were gathered from databases of Web of Knowledge, psycarticles, Scopus, psycinfo, Web of Science, and Google Scholar. A total of 165 records were identified in databases. 15 records were discovered in other sources. 149 records remained after deleting duplicates. 117 of these records were examined, 52 registers excluded. 65 complete articles were chosen to be evaluated, and after 10 completed articles had been excluded, 55 studies ultimately remained for inclusion in the synthesis. Overall, leadership styles (transformational leadership and transactional leadership) and organizational support were found as two imperative organizational factors to access better outcomes at the workplace.

scholarly journals Systematic review of effects on biodiversity from oil palm production

2014 ◽  
Author(s):  
Savilaakso S. ◽  
García C. ◽  
Garcia-Ulloa J. ◽  
Ghazoul J. ◽  
Groom M. ◽  
...  
Keyword(s):  
Systematic Review ◽  
Oil Palm
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