bluuebunny/crossref_metadata_2025_split huggingface dataset:
Postoperative periprosthetic femoral fracture around total hip replacements: current concepts and clinical outcomes
Authors: Ramavath Ashoklal , Lamb Jonathan N. , Palan Jeya , Pandit Hemant G. , Jain Sameer 
Published: September 2020

The rising incidence of postoperative periprosthetic femoral fracture (PFF) presents a significant clinical and economic burden. A detailed understanding of risk factors is required in order to guide preventative strategies. Different femoral stems have unique characteristics and management strategies must be tailored appropriately. Consensus regarding treatment of PFFs around well-fixed stems is lacking, but revision surgery may provide more predictable outcomes for unstable fracture patterns and fractures around polished taper-slip stems. Future research should focus on implant-related risk factors, treatment of concurrent metabolic bone disease and the use of large endoprostheses. Cite this article: EFORT Open Rev 2020;5:558-567. DOI: 10.1302/2058-5241.5.200003
Short Communication: Ethnobotanical study of wild and cultivated vegetables in the Eastern Cape Province, South Africa
Authors: Maroyi Alfred 
Published: September 2020

Abstract. Maroyi A. 2020. Short Communication: Ethnobotanical study of wild and cultivated vegetables in the Eastern Cape Province, South Africa. Biodiversitas 21: 3982-3988. Vegetables are an important component of agricultural biodiversity required for providing a wide range of ecosystem goods and services. The current study was undertaken in the Eastern Cape Province, South Africa to document wild and cultivated vegetables. Research data were collected by means of interviews and field surveys carried out in different seasons with one hundred and thirty-eight randomly selected participants. During the interviews, we documented information on names of edible vegetables, uses, plant parts consumed, and their preparation. A total of 32 species belonging to 26 genera and 15 families were recorded in the study area. The plant families with highest number of vegetable species were Amaranthaceae, Asteraceae, and Solanaceae with at least four species each. The main uses of vegetables identified in the study area were leafy vegetables (59.4%), edible fruits and tubers (21.9% each), culinary herbs or spices (12.5%), edible seeds (9.4%) and edible stems (6.3%). The species which were categorized as important with relative frequency of citation (RFC) values >0.3 were Brassica oleracea, Solanum tuberosum, Cucurbita moschata, Spinacia oleracea, and Cucurbita maxima. Both vegetable species collected from the wild and conventional vegetables cultivated in home gardens are important to livelihoods needs of the local people.
Molecular characterization of eight horse breeds in Algeria using microsatellite markers
Authors: BENHAMADI MOHAMMED EL AMINE , BERBER NAIMA , BENYAROU MOHAMMED , AMEUR AMEUR ABDELKADER , HADDAM HADI YOUSSOUF , PIRO MOHAMMED , GAOUAR SEMIR BECHIR SUHEIL 
Published: September 2020

Abstract. Amine BME, Naima B, Mohammed B, Abdelkader AA, Youssouf HH, Mohammed P, Suheill GSB. 2020. Molecular characterization of eight horse breeds in Algeria using microsatellite markers. Biodiversitas 21: 4107-4115. The Algerian horse population Bar, Origin Barb unknown, Arabian-Barb, Arabian, Thoroughbred (Pur sang); French Trotter, Algerian saddle, and Saddle are under a significant loss of genetic variability. This should be evaluated before any breed conservation and management program. For this purpose, genetic analyzes of diversity and differentiation were carried out on eight breeds horses reared in Algeria with 17 microsatellites. All microsatellite markers were highly polymorphic in all Breeds. A total of 170 alleles from 17 microsatellite loci were detected in 279 horses. The average number of alleles per locus was highest in Arabian-Barb horses (7.88) and lowest in Saddle breed (4.94). The observed heterozygosity interbreeds ranged from 0.685 to 0.625 for Barb and Saddle, while the expected heterozygosity was ranged from 0.746 to 0.678 for Arabian-Barb and Algerian Saddle respectively, the Ho value is lower than that of He value. Genetic diversity between breeds was significant, based on Fst. Three different approaches to assess genetic relationships have been applied; namely, genetic distances, factorial correspondence analysis, and admixture analysis have shown that a significant amount of genetic variation is maintained in populations of native horses and other breeds: the Barb, Arabian-Barb, Barb (Oi). Algerian Saddle and Saddle breeds appear to be the most genetically related and support that there are crosses between these two breeds.
Effect of genotype, concentration and timing of salicylic acid application to Phalaenopsis against Dickeya dadantii infection
Authors: Sanjaya I Putu Wahyu , Sukma Dewi , Sudarsono Sudarsono , Chan Ming-Tsair 
Published: September 2020

Abstract. Sanjaya IPW, Sukma D, Sudarsono, Chan MT. 2020. Effect of genotype, concentration and timing of salicylic acid application to Phalaenopsis against Dickeya dadantii infection. Biodiversitas 21: 4317-4323. Soft-rot because of Dickeya dadantii (Dd) infection is one of the most difficult to control, affecting the cultivation of Phalaenopsis in tropical regions. Salicylic acid (SA) is known as an inducer of resistance against pathogens in some plant species. The study aim to identify the effects of genotypes, concentrations, and timing of salicylic acid application to Phalaenopsis against D. dadantii inoculation. In experiment 1, eight Phalaenopsis genotypes were treated by SA at doses of 0 and 60 ppm and then inoculated with D. dadantii. At a dose of 60 ppm, SA did not increase the resistance to D. dadantii in any genotypes. In experiment 2, a representative of a very susceptible genotype (P. amabilis) was treated with high SA concentrations (60, 360, and 720 ppm). The results demonstrated that at SA concentrations of 360 and 720 ppm, slightly increase P. amabilis resistance to D. dadantii. In experiment 3, the most effective SA concentration (720 ppm) was used at 2, 3, 5, or 7 days after SA treatment. The timing of the SA application did not affect the resistance of P. amabilis to D. dadantii. The present study shows that SA concentrations up to 60 ppm did not inhibit D. dadantii infection. Nevertheless, such inhibition was observed at a high SA dose (720 ppm) for a short period.
Cold atom interferometry for inertial sensing in the field
Authors: Kumar Ravi , Rakonjac Ana 
Published: September 2020

Abstract
Atom interferometry is one of the most promising technologies for high precision measurements. It has the potential to revolutionise many different sectors, such as navigation and positioning, resource exploration, geophysical studies, and fundamental physics. After decades of research in the field of cold atoms, the technology has reached a stage where commercialisation of cold atom interferometers has become possible. This article describes recent developments, challenges, and prospects for quantum sensors for inertial sensing based on cold atom interferometry techniques.
Investigating electroencephalography signals of autism spectrum disorder (ASD) using Higuchi Fractal Dimension
Authors: Radhakrishnan Menaka , Won Daehan , Manoharan Thanga Aarthy , Venkatachalam Varsha , Chavan Renuka Mahadev , Nalla Harathi Devi 
Published: September 2020

Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with a deficit of social relationships, interaction, sense of imagination, and constrained interests. Early diagnosis of ASD will aid in devising appropriate training procedures and placing those children in the normal stream. The objective of this research is to analyze the brain response for auditory/visual stimuli in Typically Developing (TD) and children with autism through electroencephalography (EEG). Brain dynamics in the EEG signal can be analyzed well with the help of nonlinear feature primitives. Recent research reveals that, application of fractal-based techniques proves to be effective to estimate of degree of nonlinearity in a signal. This research attempts to analyze the effect of brain dynamics with Higuchi Fractal Dimension (HFD). Also, the performance of the fractal based techniques depends on the selection of proper hyper-parameters involved in it. One of the key parameters involved in computation of HFD is the time interval parameter ‘k’. Most of the researches arbitrarily fixes the value of ‘k’ in the range of all channels. This research proposes an algorithm to estimate the optimal value of the time parameter for each channel. Sub-band analysis was also carried out for the responding channels. Statistical analysis on the experimental reveals that a difference of 30% was observed between autistic and Typically Developing children.
Frequency of serological non-responders and false-negative RT-PCR results in SARS-CoV-2 testing: a population-based study
Authors: Baron Rita Christiane , Risch Lorenz , Weber Myriam , Thiel Sarah , Grossmann Kirsten , Wohlwend Nadia , Lung Thomas , Hillmann Dorothea , Ritzler Michael , Bigler Susanna , Egli Konrad , Ferrara Francesca , Bodmer Thomas , Imperiali Mauro , Heer Sonja , Renz Harald , Flatz Lukas , Kohler Philipp , Vernazza Pietro , Kahlert Christian R. , Paprotny Matthias , Risch Martin 
Published: September 2020

Abstract

Objectives
The sensitivity of molecular and serological methods for COVID-19 testing in an epidemiological setting is not well described. The aim of the study was to determine the frequency of negative RT-PCR results at first clinical presentation as well as negative serological results after a follow-up of at least 3 weeks.

Methods
Among all patients seen for suspected COVID-19 in Liechtenstein (n=1921), we included initially RT-PCR positive index patients (n=85) as well as initially RT-PCR negative (n=66) for follow-up with SARS-CoV-2 antibody testing. Antibodies were detected with seven different commercially available immunoassays. Frequencies of negative RT-PCR and serology results in individuals with COVID-19 were determined and compared to those observed in a validation cohort of Swiss patients (n=211).

Results
Among COVID-19 patients in Liechtenstein, false-negative RT-PCR at initial presentation was seen in 18% (12/66), whereas negative serology in COVID-19 patients was 4% (3/85). The validation cohort showed similar frequencies: 2/66 (3%) for negative serology, and 16/155 (10%) for false negative RT-PCR. COVID-19 patients with negative follow-up serology tended to have a longer disease duration (p=0.05) and more clinical symptoms than other patients with COVID-19 (p<0.05). The antibody titer from quantitative immunoassays was positively associated with the number of disease symptoms and disease duration (p<0.001).

Conclusions
RT-PCR at initial presentation in patients with suspected COVID-19 can miss infected patients. Antibody titers of SARS-CoV-2 assays are linked to the number of disease symptoms and the duration of disease. One in 25 patients with RT-PCR-positive COVID-19 does not develop antibodies detectable with frequently employed and commercially available immunoassays.
A Zn(ii)–organic cage with semirigid ligand for solvent-free cyanosilylation and inhibitory effect on ovarian cancer cell migration and invasion ability via regulating mi-RNA16 expression
Authors: Yin Yan , Mai Hong , Zhang Li-Ying , Liao Yan , Liu Xu-Peng , Wei Ye-Ping 
Published: September 2020

Abstract[Zn6(L)4(DMF)2(H2O)4](1,4-Dioxane)2(DMF)10(H2O)4 (1, L  =  4,4′,4″-(benzene-1,3,5-triyltris(oxy))tribenzoate), the metal-organic cage, was produced via Zn(NO3)2·6H2O reacting with the H3L ligand in the mixed solvent of DMF and water. The heterogeneous catalytic activities of the complex 1 for the aldehydes cyanidation under the conditions of free solvent were studied, which indicates that the removal of coordination solvents could greatly improve the catalytic activities. Furthermore, the inhibitory effect of the compound against the ovarian cancer cells was assessed. The mi-RNA16 relative expression level was measured after exposure to the compound with real-time reverse transcription-polymerase chain reaction. The invasion and migration of cells after compound treatment were also detected by the transwell method.
The third partial cohomology group and existence of extensions of semilattices of groups by groups
Authors: Dokuchaev Mikhailo , Khrypchenko Mykola , Makuta Mayumi 
Published: September 2020

Abstract
We introduce the concept of a partial abstract kernel associated to a group G and a semilattice of groups A and relate the partial cohomology group

H
3

⁢

(
G
,

C
⁢

(
A
)

)

{H^{3}(G,C(A))}

with the obstructions to the existence of admissible extensions of A by G which realize the given abstract kernel.
We also show that if such extensions exist, then they are classified by

H
2

⁢

(
G
,

C
⁢

(
A
)

)

{H^{2}(G,C(A))}

.
Survival of altruistic gatekeepers: Kickbacks in medical markets
Authors: Amann Erwin , Felder Stefan 
Published: September 2020

AbstractPatients often rely on the advice of their general practitioner (GP) to decide which treatment best fits their needs. Hospitals, in turn, might influence GPs’ referral decision through kickbacks. We present a model with a monopolistic hospital and competitive GPs who vary in the degree of altruism towards their heterogeneous patients and show that an equilibrium without crowding out exists that separates GPs into referrers and care providers. Naïve patients visit purely selfish (referring) GPs, while rational patients sort themselves between the two groups of GPs. Finally, we investigate the scope for regulation, including an optimal coinsurance rate.
A novel approach to determine charring of wood in natural fire implemented in a coupled heat-mass-pyrolysis model
Authors: Pečenko Robert , Hozjan Tomaž 
Published: September 2020

Abstract
The paper presents a novel approach to determine charring of wood exposed to standard and natural fire that is based on a new numerical model named PyCiF. The new model couples an advanced 2D heat-mass model with a pyrolysis model. A new charring criterion based on a physical phenomenon is implemented in the PyCiF model to determine charring of wood. This presents the main advantage of the new PyCiF model in comparison to common modelling approaches, which require an empirical value of the charring temperature that is often called the char front temperature. The fact that the char front temperature is not an explicit value as assumed by the isotherm 300 °C is advantageously considered in the presented approach where an assumed empirical value of the char front temperature is not directly required to determine the thickness of char layer. The validation of the PyCiF model against experimental results showed great model accuracy, meaning that the model is appropriate for the evaluation of charring depths of timber elements exposed to the standard fire as well as the natural fires. Additionally, as shown in the case study, the presented approach also enables to determine the char front temperature for various natural fire exposures. This will be especially important for the upgrade of the new design methods for fire safety of timber elements exposed to natural fire given in the various design codes such as Eurocode 5.
Physiology of guanosine-based second messenger signaling in Bacillus subtilis
Authors: Bange Gert , Bedrunka Patricia 
Published: September 2020

AbstractThe guanosine-based second messengers (p)ppGpp and c-di-GMP are key players of the physiological regulation of the Gram-positive model organismBacillus subtilis. Their regulatory spectrum ranges from key metabolic processes over motility to biofilm formation. Here we review our mechanistic knowledge on their synthesis and degradation in response to environmental and stress signals as well as what is known on their cellular effectors and targets. Moreover, we discuss open questions and our gaps in knowledge on these two important second messengers.
Perceived burden, causes and consequences of adolescent pregnancy in the rural Maharashtra: a cultural domain analysis
Authors: Joshi Shiv H. , Raut Abhishek V. , Goswami Sourav , Gupta Subodh S. 
Published: September 2020

Abstract

Objectives
The existing level of the early age pregnancy necessitates in-depth discussions and study. The objective of this study is to explore the perception of rural population regarding adolescent pregnancy with reference to the perceived burden, causes and consequences.

Methods
A cross-sectional study through cultural domain analysis using free listing and participatory learning and action (PLA) tool of ten seed analysis was used for exploring the perceptions of the community. Cognitive salience was estimated using the Sutrop (Su) index.

Results
The perceived burden of adolescent pregnancy was around 18%. Early marriage (Su index = 0.274), love/relationship (Su index = 0.246), pre-marital sex (Su index = 0.215), rape/incest (Su index = 0.162), and poor educational status (Su index = 0.152) were the salient causes of adolescent pregnancy. The salient consequences identified were weak baby (Su index = 0.170), social stigma (Su index = 0.124), excessive bleeding during delivery (Su index = 0.114), mother may die (Su index = 0.112) and abortion (Su index = 0.109).

Conclusions
Teenage pregnancy is perceived as a problem by the community. The causes of teenage pregnancy in this setting are multi-dimensional and are deeply embedded in the system of local values, beliefs and practices.
Balanced diet related knowledge, attitude and practices (KAP) among adolescent school girls in Noakhali district, Bangladesh: a cross sectional study
Authors: Ghosh Susmita , Kabir Md Ruhul , Alam Mohammad Rahanur , Chowdhury Akibul Islam , Al Mamun Md Abdullah 
Published: September 2020

Abstract

Objectives
Adolescence, a crucial period for growth velocity including sexual maturation, is an important period of life and young adolescent girls need to have proper knowledge, positive attitudes and practice of balanced diet to achieve optimum growth and development. Considering its importance this study attempts to assess the knowledge, attitude and practice (KAP) of balanced diets among adolescent schoolgirls in Noakhali district, Bangladesh.

Methods
A descriptive cross-sectional study was conducted in three secondary schools in Noakhali district, Bangladesh. A multistage sampling techniques was used to select schools and study participants. A total of 485 adolescent school girls participated and a pre-designed, validated and structured questionnaire was used for data collection. In addition to descriptive statistics, chi-square test and logistic regression were employed for analysis.

Results
The results from the study revealed that more than half of the students did not have good knowledge about a balanced diet, 42.8% had a positive attitude, whereas the practice of consuming a balanced diet was rather low (only 4.5%). Students studying in government schools had better knowledge and attitudes than non-government school students. Moreover, 41.1% of students were underweight; more than 60% of respondent’s mothers did not have an education higher than secondary school and were mostly unemployed housewives. Parent’s education, mother’s occupation, and types of school have a strong association with KAP; however, father’s education and occupation showed an association of varying degrees. Being knowledgeable was related to positive attitudes, and students with good knowledge had (OR: 1.828; 95% CI: 1.270–2.631) more likely to have positive attitudes towards a balanced diet.

Conclusions
Thus, proper knowledge about a balanced diet should be introduced with basic nutritional knowledge to all levels of public education. Interventions and programs can be designed to improve knowledge, attitude, and more specifically the practice at the household level so that adolescent girls can have a proper diet during their sexual maturation phase.
Association between intelligent quotient and oral health conditions among 13–15 year old intellectually disabled children
Authors: Sukhabogi Jagadeeswara Rao , Doshi Dolar , Shwetha Sankepalli , Gone Hariprasad , Vasavi Kandadi , Shulamithi Pandi 
Published: September 2020

Abstract

Objectives
This study aimed to assess the relationship between intelligence quotient and oral health conditions among intellectually disabled children.

Methods
A cross-sectional study was conducted among 13–15 year old intellectually disabled children at National Institute of Mental Health, Hyderabad. The survey comprised of classification of intellectually disabled children based on their intelligent quotient (IQ) levels along with clinical oral examination using World health organization (WHO) oral health assessment form (2013). Statistical analysis was done using SPSS 21.0. p<0.05 was statistically significant.

Results
The mean age of study participants was 13.73 ± 3.04 years. Based on IQ levels, majority of the participants had moderate retardation (41.8%) and when oral health problems were compared, greater than 50% had gingivitis with mean DMFT scores of 2.48 ± 2.1. A significant higher mean DMFT scores were observed with profound retardation (4.74 ± 2.17) (p=0.000) whereas greater preponderance for oral health problems was observed among moderately retarded subjects.

Conclusions
Overall majority of the study participants were moderately retarded children and had gingivitis. The higher mean DMFT score was observed with profound retardation with statistical significance. However, Greater percentage of oral health problems were among moderately retarded children. Hence intellectually disabled children should be encouraged to take care about oral health themselves under the guidance of their care takers.
Oral health knowledge, attitude and practice among adolescents in Kuwait
Authors: Abdulrahim Menther , AlKandari Mohammad , Alomari Qasem , Baskaradoss Jagan K. 
Published: September 2020

Abstract

Objectives
Adequate knowledge about oral health at a young age is essential in establishing good oral health related behaviors and in developing a positive attitude towards oral health. This study aims to assess the oral health knowledge, attitude and practice of adolescent children aged 15–17 years in Kuwait.

Methods
This cross-sectional survey was conducted in 12 randomly selected public schools in Kuwait using a two-stage cluster sampling method. An Arabic questionnaire with 29 questions were distributed to the students from selected classes. The questionnaire was divided into four sections: the first section gathered information on the sociodemographic characteristics of the participants; the second section assessed the oral health knowledge of the respondents; the third section assessed the students’ attitude towards professional dental care and the last section assessed the students’ oral health behaviors and practice. Frequency distributions were obtained for each variable and the differences between genders were analyzed using chi-squared statistics and the mean difference in the knowledge and attitude scores were analyzed using independent sample t-test.

Results
A total of 3,091 students aged 15–17 years (52.8% girls) participated in this study. The mean (SD) knowledge score of the respondents was 8.62 (2.53) and this was significantly higher for girls compared to boys (p<0.001). Significantly higher percentage of girls than boys knew the role of diet and oral hygiene in preventing caries (p<0.001). Knowledge about dental plaque was very limited in this population. Majority of the respondents believed that regular dental visits were essential (87.1%). The mean (SD) attitude score of the respondents was 3.30 (2.72) and this was significantly higher for girls compared to boys (p<0.001). Majority of the students used toothbrush and toothpaste to clean their teeth (60%).

Conclusion
Significant gender differences were observed in the oral health knowledge and attitudes in this population. School based oral health promotion programs can be effective in promoting good oral health attitudes and practice among children.