bluuebunny/crossref_metadata_2025_split huggingface dataset:
Planktonic flora and fauna of Opa Reservoir wetlands, Obafemi Awolowo University, Ile-Ife, Nigeria
Authors: Adebayo Aderonke Tolulope , Adewole Henry Adefisayo , Akindele Emmanuel Olusegun , Olaleye Victor Folorunso 
Published: September 2021

Abstract
Background
Wetlands are transition zones between aquatic and terrestrial environments of Opa Reservoir Obafemi Awolowo University, Ile-Ife, Nigeria, threatened by increase in agricultural practices and urbanization within the catchment area. A critical appraisal of the current ecological integrity of the wetlands using planktonic composition and community structure which are formidable to sustaining wetlands is essential, hence this study.

Result
A total of 104 plankton species comprises of 68 species of phytoplankton and 36 species of zooplankton were recorded from the wetlands. In each sampled location and during the sampling period, Bacillariophyta had the highest occurrence among the phytoplankton, while Rotifera recorded the highest occurrence among the zooplankton. Generally, Synedra ulna and copepod (cyclopoid) Nauplius, respectively, were the most common phytoplankton and zooplankton recorded during the period of study. Analyses also showed that the phytoplankton had a higher species occurrence and abundance (65.3% and 98.18%, respectively) than the zooplankton (34.6% and 1.82%, respectively). Diversity indices (Shannon–Wiener, Margalef, and Simpson) analyses of both plankton groups revealed that the wetlands were generally polluted.

Conclusion
The study concluded that the ability of the wetlands to support and maintain a balanced adaptive community of plankton with species composition and diversity is being eroded due to anthropogenic activities in the wetland areas. This could have some ecological and socioeconomic implications considering the fact that they are intrinsically a part of the adjoining reservoir which provides many ecosystem services.
The future of Swiss hydropower: how to distribute the risk and the profits?
Authors: Kosch Mirjam , Betz Regina , Geissmann Thomas , Schillinger Moritz , Weigt Hannes 
Published: September 2021

AbstractLow electricity prices put economic pressure on hydropower companies. A more flexible water fee design can counteract this pressure and support hydropower companies during times when market revenues are low. However, this comes at the cost of lower revenues for resource owners. Using a sample of cost data for 62 companies and revenue data derived from an electricity market model, we have quantified this trade-off for the case of Switzerland. We found that electricity market price developments dominate changes in water fees and that for the profitability of hydropower, electricity prices are more important than water fee levels. However, with electricity prices of around CHF 40 per MWh, water fees can make the difference between profit and loss. Therefore, while flexible water fee regimes shift the market risk from producers to resource owners to some extent, the extent of this risk shift depends on the detailed design of the flexible regime.
Efficacy and safety of hydro-mechanical defragmentation in intermediate- and high-risk pulmonary embolism
Authors: Hassan Ayman K. M. , Ahmed Heba , Ahmed Yousef , Elfadl Abd-Elazim Abo , Omar Amany 
Published: September 2021

Abstract
Background
Pulmonary embolism (PE) is the third most common acute cardiovascular syndrome. Percutaneous catheter directed hydro-mechanical defragmentation (HMD) is one of the recommended treatment options for PE in patients with contraindications to thrombolytic therapy or failed systemic thrombolysis (ST). We aimed to identify the safety and outcomes of catheter directed HMD in patients with high-risk PE. This nonrandomized controlled trial enrolled all patients with confirmed diagnoses of high- and intermediate-high-risk PE from October 2019 till January 2021. Fifty patients were included and divided into two groups by the PE response team according to the presence or absence of a contraindication for ST. Group B (ST) consists of 25 patients and group A (HMD) of 25 patients who cannot receive ST.

Results
The two groups were comparable regarding baseline clinical characteristics with mean age 51 ± 13 years. In group A, systolic blood pressure (BP) and oxygen saturation increased after 24 h (p = 0.002) and 48 h (p < 0.001) compared to pre-HMD procedure. Mean pulmonary artery systolic pressure (PASP) and respiratory rate (RR) decreased after 48 h and at 30 days (p < 0.001) compared to pre-HMD procedure. The increase in systolic BP and oxygen saturation were significantly higher in HMD group compared with ST group after 48 h and at 30 days (p < 0.007). The decrease in PASP and RR was significantly higher in HMD group compared to ST group after 48 h and at 30 days (p < 0.001). Mortality rate at 30 days was 20% in HMD group compared to 32% in ST group.

Conclusions
Catheter directed HMD for high-risk and intermediate-high-risk PE is safe and effective with acceptable mortality
Trial registration Clinical trial ID: NCT04099186.
Palatal petechiae: an uncommon oral adverse effect of COVID-19 vaccine
Authors: Sayare Bhawna , Bhardwaj Vinay Kumar , Sharma Deepak 
Published: September 2021

Abstract
Background
The authors present an unusual, unreported oral adverse effect of COVID-19 vaccine as palatal petechiae lesions.

Case presentation
COVID-19 disease caused by severe acute respiratory syndrome coronavirus 2 has become a global health crisis and has caused millions of deaths worldwide. Vaccination programs have been initiated in many countries for COVID-19 prevention. The ChAdOx-nCoV-19 vaccine has been shown to provide a robust immune response in various clinical trials. It is well tolerated by recipients and has been associated with minor adverse effects. The COVISHIELD (ChAdOx-nCoV-19) vaccine developed by AstraZeneca/Oxford University is approved by the Government of India to be administered in a phased manner. We present the case of twin subjects who suffered various adverse effects after receiving the COVISHIELD vaccine; one of the twins presented with palatal petechiae lesions presumably caused by the vaccine. The lesions were self-limiting and required no treatment.

Conclusion
Oral lesions reported first time in our case should be correlated with similar lesions found post-COVID vaccines globally. There is a further need to ascertain a high level of scientific evidence and explore the biological plausibility underlying oral complications and COVID vaccinations.
Impact of air pollution and smoking on COVID-19: a review
Authors: Vijayakumar Vijaytha , Sabu A. , Haridas M. 
Published: September 2021

Abstract
Background
The 21st century already witnessed many deadly epidemics and pandemics. The major ones were respiratory tract infections like SARS (2003), H1N1 (2009), MERS (2012) and the most recent pandemic COVID-19 (2019). The COVID-19 story begins when pneumonia of unknown cause was reported in the WHO country office of China at the end of 2019. SARS-CoV-2 is the causative agent that enters the host through the receptor ACE2, a component of the renin–angiotensin system.

Main body of the abstract
Symptoms of COVID-19 varies from patient to patient. It is all about the immunity and health status of the individual that decides the severity of the disease. The review focuses on the significant and often prevailing factors, those that influence the lung function. The factors that compromise the lung functions which may prepare the ground for severe COVID-19 infection are interestingly looked into. Focus was more on air pollution and cigarette smoke.

Short conclusion
The fact that the forested areas across the world show very low COVID-19 infection rate suggests that we are in need of the “Clean Air” on the fiftieth anniversary of World Earth Day. As many policies are implemented worldwide to protect from SARS-CoV-2, one simple remedy that we forgot was clean air can save lives. SARS-CoV-2 infects our lungs, and air pollution makes us more susceptible. In this crucial situation, the focus is only on the main threat; all other conditions are only in words to console the situation.
Hyperglycemic Emergencies Associated With COVID-19 Vaccination: A Case Series and Discussion
Authors: Lee Hanna J , Sajan Alen , Tomer Yaron 
Published: September 2021

Abstract

Context
Hyperglycemic emergencies such as diabetic ketoacidosis (DKA) and hyperosmolar hyperglycemic syndrome (HHS) and new-onset diabetes mellitus (DM) have been reported in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections. Hyperglycemia is a predictor of poor prognosis in COVID-19 disease.

Objectives
The objective of this work is to describe a case series of HHS and/or DKA likely triggered by the COVID-19 vaccine. The aim is to alert physicians of the potential hyperglycemic complications from the COVID-19 vaccination and to provide further insight into the underlying mechanism of the bidirectional relationship between SARS-CoV-2 and DM.

Case Descriptions
All 3 patients developed HHS and/or DKA within 2 to 10 days of the COVID-19 vaccination. PCR testing for SARS-CoV-2 was negative and other clinical precipitating factors were excluded. Two patients had a history of type 2 DM (T2DM) with pre-admission HbA1c levels of 7.0% to 7.5% while 1 patient was newly diagnosed with T2DM during the hospitalization. They were each treated with insulin infusion and were discharged on subcutaneous insulin therapy. Due to the rapid resolution of the hyperglycemia, insulin was discontinued in all patients within 8 weeks and they remain well-controlled on oral DM medications.

Conclusion
Severe hyperglycemia including HHS and DKA may be triggered by COVID-19 vaccination. Early evaluation and screening of patients with hyperglycemic symptoms after COVID-19 vaccination is recommended. The vaccine-induced hyperglycemia may provide further insight into the underlying pathogenesis caused by the SARS-CoV-2 infection itself. The underlying robust inflammatory response and “cytokine storm” may be the primary precipitant.
Dental amalgam: a practical guide
Authors: Mackenzie Louis 
Published: September 2021

Historically, dental amalgam is the world's most commonly used restorative material. Its use is declining due to patient and professional demand for tooth-coloured restorations that are adhesive and promote minimally invasive tooth preparation techniques. Significant reduction has also resulted from environmental concerns relating to dental amalgam's ~50% mercury content. This paper provides a comprehensive review of the status of dental amalgam including its advantages and disadvantages, amalgam safety, regulations and legislation and a comparison with alternative restorative materials. As the undergraduate teaching of amalgam procedures has progressively declined, this paper also provides an illustrated step-by-step revision guide to the materials, equipment and clinical techniques that will optimize the restoration of challenging, complex cavities, where amalgam is still considered by many to be the material of choice. CPD/Clinical Relevance: Amalgam remains an excellent restorative material for long-lasting restorations in large/complex cavities and where moisture control presents challenges.
Bonding to dentine: an update on universal adhesives
Authors: Burke FJ Trevor , Mackenzie Louis 
Published: September 2021

The ability to successfully bond restorations to dentine is central to minimally invasive restorative dentistry. While dentine bonding agents have gone through a variety of ‘generations’, it is the purpose of this article to describe the latest clinical and laboratory research on universal adhesives. Results from the latest laboratory and clinical research indicates that universal adhesives are a step forward in the quest for the ultimate bond to tooth substance and ease of use of the adhesive. The wide variety of studies that indicates the effectiveness of universal adhesives are discussed, along with research that indicates that selective enamel etching is a beneficial procedure when using these materials. CPD/Clinical Relevance: Universal adhesives appear to hold promise in the quest for a reliable bond to dentine.
Conventional glass-ionomer cements: a guide for practitioners
Authors: Mylonas Petros , Zhang Jing , Banerjee Avijit 
Published: September 2021

Glass-polyalkenoate cements, also known as glass-ionomer cements (GICs), are one of the most commonly used bio-interactive restorative dental materials, having been available since the 1970s. With the promotion of minimally invasive operative dentistry (MID), and the reduction in the use of dental amalgam worldwide, the popularity of these materials has grown significantly in recent years. This article outlines the basics and clinical importance of GIC material science, and provides an overview of their use in restorative dentistry.CPD/Clinical Relevance: GICs are versatile dental biomaterials that require correct case selection, material handling and placement technique to ensure optimal clinical success.
Hydraulic cements for various applications in endodontics: Part 2
Authors: Bonsor Stephen J , Camilleri Josette 
Published: September 2021

The first article in this two-part series described the properties and use of hydraulic cements for intra-coronal applications, mainly for vital pulp therapy and as a barrier for regenerative endodontic procedures. In Part 2, the intra-radicular and extra-radicular uses are discussed. Hydraulic cements are a unique set of materials that set in the presence of water and, when set, they are resistant to deterioration in a damp environment. The use of hydraulic cements within the root canal (root canal sealer and apical plug) and when used at the periodontal–endodontic interface (perforation repair and root-end filler) is described and illustrated with clinical cases. CPD/Clinical Relevance: Hydraulic cements are indicated for a number of procedures in endodontics and this is supported by an extensive and increasing body of evidence with respect to their efficacy.
Ceramics in dentistry: which material is appropriate for the anterior or posterior Dentition? Part 1: materials science
Authors: Win Loo Chien , Sands Peter , Bonsor Stephen J , Burke FJ Trevor 
Published: September 2021

The large choice of ceramic materials for an indirect restoration has given clinicians a dilemma when choosing a suitable ceramic for restorations in anterior or posterior teeth. Focusing principally on the most commonly used materials, lithium disilicate and zirconia, the aim of Part 1 of this article is to compare the mechanical properties and aesthetics of these two materials. For strength, zirconia possesses superior physical properties when compared with lithium disilicate. However, in terms of aesthetics, lithium disilicate holds advantages. With both materials having different microstructures, the same cementation protocols cannot be used. Other contemporary ceramic materials are briefly reviewed. Part 2 reviews the latest clinical research on their clinical performance. CPD/Clinical Relevance: Awareness of which ceramic material performs optimally on anterior and posterior teeth is clinically important.
The Efficiency of Aggregation Methods in Ensemble Filter Feature Selection Models
Authors: Noureldien Noureldien , Mohmoud Saffa 
Published: September 2021

Ensemble feature selection is recommended as it proves to produce a more stable subset of features and a better classiﬁcation accuracy when compared to the individual feature selection methods. In this approach, the output of feature selection methods, called base selectors, are combined using some aggregation methods. For filter feature selection methods, a list aggregation method is needed to aggregate output ranked lists into a single list, and since many list aggregation methods have been proposed the decision on which method to use to build the optimum ensemble model is a de facto question.
In this paper, we investigate the efficiency of four aggregation methods, namely; Min, Median, Arithmetic Mean, and Geometric Mean. The performance of aggregation methods is evaluated using five datasets from different scientific fields with a variant number of instances and features. Besides, the classifies used in the evaluation are selected from three different classes, Trees, Rules, and Bayes.
The experimental results show that 11 out of the 15 best performance results are corresponding to ensemble models. And out of the 11 best performance ensemble models, the most efficient aggregation methods are Median (5/11), followed by Arithmetic Mean (3/11) and Min (3/11). Also, results show that as the number of features increased, the efficient aggregation method changes from Min to Median to Arithmetic Mean. This may suggest that for a very high number of features the efficient aggregation method is the Arithmetic Mean. And generally, there is no aggregation method that is the best for all cases.
Connecting Smart Homes to Healthcare Services for People with Neurodegenerative disorders.
Authors: Nour Mhamed 
Published: September 2021

The objective of this research is to provide an approach for the design of what we have called ‘connected homes’ with a study case for elderly people with dementia living alone. These homes would be connected to a center of surveillance for direct and automatic view of multiple status of the day such as patient security and general health indicators (body temperature, heart rate, blood pressure etc.), detect the intake of meals, eating motivation, humor detection prevention of falls, Alcohol consumption detection, safe use of medicines and emergency situations and other Human Activity Recognition (HAR). The model may also predict situations by using past data accumulation. The model could even send alerts in case of emergency.
This service would mean that there would minimum intervention from caregivers thanks to the Artificial Intelligence.
As a case study, we proposed a new approach for the conception of connected homes for people with dementia to a central office for automatic human activity detection and help and support accordingly. Such conception includes home design concepts according to standard recommendations and the implementation of new added assistive technology tools to permit the automatic surveillance without violating the ethic requirements.
Two installation models will be proposed to consider the financial situation of the patient: a unit or appliance at the patient’s home or a home that is connected to a central office.
Interior and boundary regularity results for strongly nonhomogeneousp,q-fractional problems
Authors: Giacomoni Jacques , Kumar Deepak , Sreenadh Konijeti 
Published: September 2021

AbstractIn this article, we deal with the global regularity of weak solutions to a class of problems involving the fractional(p,q){(p,q)}-Laplacian, denoted by(-Δ)ps1+(-Δ)qs2{(-\Delta)^{s_{1}}_{p}+(-\Delta)^{s_{2}}_{q}}fors2,s1∈(0,1){s_{2},s_{1}\in(0,1)}and1<p,q<∞{1<p,q<\infty}. We establish completely new Hölder continuity results, up to the boundary, for the weak solutions to fractional(p,q){(p,q)}-problems involving singular as well as regular nonlinearities. Moreover, as applications to boundary estimates, we establish a new Hopf-type maximum principle and a strong comparison principle in both situations.
1
,
2
,
3
1,2,3
, some inductive real sequences and a beautiful algebraic pattern
Authors: Abdymanapov Sarsengali Abdygalievich , Altynbek Serik , Begehr Anton , Begehr Heinrich 
Published: September 2021

Abstract
By rewriting the relation

1
+
2

=
3

{1+2=3}

as

1

2

+

2

2

=

3

2

{\sqrt{1}^{2}+\sqrt{2}^{2}=\sqrt{3}^{2}}

, a right triangle is looked at. Some
geometrical observations in connection with plane parqueting lead to
an inductive sequence of right triangles with

1

2

+

2

2

=

3

2

{\sqrt{1}^{2}+\sqrt{2}^{2}=\sqrt{3}^{2}}

as initial one converging to the
segment

[
0
,
1
]

{[0,1]}

of the real line. The sequence of their hypotenuses
forms a sequence of real numbers which initiates some beautiful
algebraic patterns. They are determined through some recurrence
relations which are proper for being evaluated with computer
algebra.
Generating functions involving the incomplete H-functions
Authors: Jangid Kamlesh , Purohit Sunil Dutt , Nisar Kottakkaran Sooppy , Araci Serkan 
Published: September 2021

Abstract
In this article, for the incomplete H-functions, we obtain a set of new generating functions. The bilateral along with linear generating relations are derived for the incomplete H-functions. Many of the generating functions readily accessible in the literature are often deemed as implementations of the main findings. All the derived findings are of a natural type and can produce a variety of new results in generating function theory.
The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode
Authors: Li Xiaofen , Gao Yuntao , Xiong Huabin , Yang Zhi 
Published: September 2021

AbstractThe electrochemical redox mechanism of polyphenolic compounds (gallic acid [GA], caffeic acid [CA], ferulic acid [FA], and vanillic acid [VA]) were investigated by electrochemical methods at the inlaid multi-walled carbon nanotubes-modified graphite electrode (MWCNTs/GCE). The obtained micro-information such as the number of electrons and protons were used to deduce the electrochemical oxidation mechanism of four polyphenolic compounds. The antioxidation activities of these compounds were also studied by two methods. The radical scavenging activity followed the order: GA > CA > FA > VA, which was in agreement with the result from the spectrophotometry method. The result indicated that compounds with lower oxidation peak potential (Epa) showed stronger antioxidation activity. At the same time, compounds with highEpashowed lower antioxidant activity. The greater the number of hydroxyls linked to the aromatic ring, the greater the antioxidation activities of four compounds. Structural analysis of these phenolic-based compounds suggested that multiple OH substitutions and conjugations determine their free radical scavenging activity and electrochemical behavior.
Investigation of bovine serum albumin aggregation upon exposure to silver(i) and copper(ii) metal ions using Zetasizer
Authors: Alhazmi Hassan A. , Ahsan Waquar , Ibrahim Angum M. M. , Khubrani Rawan Ali Yahya , Haddadi Zainab Ali Abdullah , Safhi Amjad Yahya Fathi , Shubayr Nasser , Al Bratty Mohammed , Najmi Asim 
Published: September 2021

Abstract
Depending upon the metal coordination capacity and the binding sites of proteins, interaction between metal and proteins leads to a number of changes in the protein molecule which may include the change in conformation, unfolding, overall charge, and aggregation in some cases. In this study, Cu(ii) and Ag(i) metal ions were selected to investigate aggregation of bovine serum albumin (BSA) molecule upon interaction by measuring the size and charge of the aggregates using nano-Zetasizer instrument. Two concentrations of metal ions were made to interact with a specific concentration of BSA and the size and zeta potential of BSA aggregates were measured from 0 min upto 18 h. The Cu(ii) and Ag(i) metal ions showed almost similar behavior in inducing the BSA aggregation and the intensity of peak corresponding to the normal-sized protein decreased with time, whereas the peak corresponding to the protein aggregate increased. However, the effect on zeta potential of the aggregates was observed to be different with both metal ions. The aggregation of protein due to interaction of different metal ions is important to study as it gives insight to the pathogenesis of many neurological disorders and would result in developing effective ways to limit their exposure.