bluuebunny/crossref_metadata_2025 huggingface dataset:
A KETO-MEDIET APPROACH WITH COCONUT SUBSTITUTION AND EXERCISE MAY DELAY THE ONSET OF ALZHEIMER’S DISEASE AMONG MIDDLE-AGED
Authors: Perng B.C. , Chen M. , Perng J.C. , Jambazian P.
Published: November 2021

Background: Coconut oil has been widely used to improve health because there is much information available by word of mouth, in books, and on the internet. However, researchers still continue to search for the best diets to improve the quality of life, especially for people with cognitive decline. Objectives: The aim of this review is to develop a novel dietary approach, the Keto-Mediet, which may help prevent the onset of Alzheimer’s disease. Methods: Evidence gained through literature review from 1982 to 2015 on gene-by-diet interaction and lipid and glucose metabolism in the brains of Alzheimer’s patients is converted into the new Keto-Mediet approach. Design: The Keto-Mediet approach combines the benefits of a Ketogenic diet and a Mediterranean diet into a pyramidal model that is rich in various types of vitamins and substitutes coconuts for saturated animal fats. Limited glucose intake is intended to delay brain degeneration. A revised adult food pyramid was created to illustrate the principles of the Keto-Mediet approach. Conclusion: The Keto-Mediet approach represents and interprets food groups according to the revised adult food pyramid. This approach also encourages adherence to this healthy diet and lifestyle changes including exercise for people whose age ranges from 40 to 75 years. Those who comply with this approach will significantly enhance their knowledge and adopt a healthier lifestyle, as compared to those whose modern eating patterns are typically less healthy. Therefore, the Keto-Mediet approach can be applied in hopes of preventing and decreasing Alzheimer’s disease in different ethnicities and cultural groups.
GINKGO BILOBA EXTRACT CONSUMPTION AND LONG-TERM OCCURRENCE OF DEATH AND DEMENTIA
Authors: Dartigues J.F. , Grasset L. , Helmer C. , Féart C. , Letenneur L. , Jacqmin-Gadda H. , Joly P. , Amieva H.
Published: November 2021

Objectives: To study the benefit of Ginkgo Biloba Extract (GBe) consumption on the long term risk of dementia and death in elderly people. Design: The Paquid study is a population-based cohort with regular follow-up screenings up to twenty-two years and systematic detection of incident cases of dementia. Statistical analysis was conducted with an illness-death model dealing with interval censoring of dementia and competing risk of death. Setting: The sample was randomly selected from electoral rolls in two administrative areas of southwestern France in 1988-1989. Participants: 3,777 subjects aged 65 years or older at baseline who were living at home Measurement: Participants were visited at home by a trained psychologist at baseline in 1988/1989, and then again approximately every two years. Drug consumption for the treatment of cognitive or neurosensory impairment was collected at baseline. Participants were classified as GBe consumers, other drug (OD) consumers and untreated controls (UC) for this motive. Results: After adjustment for sociodemographic factors and cognitive measures at baseline the risk for dementia was not significantly different in GBe consumers and UC (Hazard Ratio (HR)=1.21, 95% Confidence Interval (95% CI)=0.95-1.55, p=0.42) and it was of the same magnitude but significantly increased in the OD group versus UC (HR=1.25, 95% CI=1.06-1.46, p=0.004). With the same adjustment, the risk of dying in non-demented subjects was reduced in GBe consumers versus UC (HR=0.67, 95% CI=0.49-0.93, p=0.02) while it was the same as the reference group in OD consumers. The mean lifetimes without dementia was of 11.2 years in the UC group (95% CI=10.9-11.5), 11.1 years in the GBe group (10.2-11.9) and 9.1 years for the OD group (8.7-9.6). Conclusion: GBe consumers have a lower risk of dying before dementia and a longer lifetime without dementia than participants taking other drugs for the same indication.
ASSESSING THE RELATIONSHIP BETWEEN VITAMIN D STATUS AND IMPAIRMENTS IN COGNITIVE AND PHYSICAL PERFORMANCE IN OLDER ADULTS USING A DUAL TASK PHYSICAL PERFORMANCE TEST
Authors: Lopez J. , Campa A. , Lewis J.E. , Huffman F.G. , Liuzzi J.P. , Li T. , Martinez A.H. , Ferris S.M. , Rasul A. , Farooqi A. , Lopez Medrano A.M. , Atlas S.E. , Tiozzo E. , Konefal J. , Woolger J.M.
Published: November 2021

Background: Vitamin D deficiency has been associated with an increased risk of falls in older adults. Several studies have demonstrated an association between vitamin D deficiency and gait and cognitive impairments, which are two risk factors for falls in the elderly. There is lack of research about the role of vitamin D in cognitive function in the context of mobility. Objective: The purpose of this study was to evaluate the association between vitamin D status with the age-related changes in mobility through higher order cognitive function using a dual task physical performance test. Design: Cross-sectional Setting: Community-dwelling older adult population located in Miami, Fl. Participants: Healthy participants over the age of 55 (n=97) who participated in the parent interventional study. Measurements: Participants completed assessments that included serum levels of vitamin D, surveys, and dual task physical performance tests. Spearman’s correlations, independent t-tests, repeated measures ANOVAs and multiple logistic regressions were used to examine the relationship between vitamin D insufficiency (25-hydroxyvitamin D <30 ng/ml) and sufficiency (≥30 ng/ml) and dual task physical performance variables. The significance level was set at α=0.05. Results: There were no significant associations between vitamin D insufficiency and gait velocity during either task. Using Spearman correlations, slower single (P=0.011) and dual task counting rates (P=0.006) were significantly associated with vitamin D insufficiency. Independent t-tests showed dual and single task counting rates were significantly lower in the vitamin D insufficient group compared to the sufficient group (P=0.018 and P=0.028, respectively). The results for the ANOVAs indicated that velocities and counting rates were not significantly different by vitamin D status (Wilk’s Lambda =0.999; F (1, 95) =.11, P=.740) (Wilk’s Lambda =.999, F(1,95)=.13, P=.718). Vitamin D status was not significantly associated with dual task physical performance (defined as the difference in dual and single task) in gait velocity (OR=1.00, 95% CI: 0.98; 1.02, P=0.772) and counting rate (OR=1.684, 95% CI: 0.15; 19.57, P=0.677), when controlling for confounders. Conclusions: Since counting backward is a mental tracking task, which is a component of executive function, our results suggest a relationship between vitamin D insufficiency and executive dysfunction. Executive dysfunction has been previously associated with fall risks in the elderly, and it could be a possible mediator between vitamin D and falls. Our data suggest that cognition may play a significant role in vitamin D’s influence on falls, while motor function may play a lesser role.
MODEST OVERWEIGHT AND HEALTHY DIETARY HABITS REDUCE RISK OF DEMENTIA: A NATIONWIDE SURVEY IN TAIWAN
Authors: Lee C.-Y. , Sun Y. , Lee H.-J. , Chen T.-F. , Wang P.-N. , Lin K.-N. , Tang L.-Y. , Lin C.-C. , Chiu M.-J.
Published: November 2021

Background: Evidence of the associations of dietary habits and body mass index with dementia is inconsistent and limited in East Asian countries. Objective: We aim to explore the associations of dietary habits and body mass index with the odds of dementia. Design: Cross-sectional observational study. Setting: A nationwide, population-based, door-to-door, in-person survey. Participants: Selected by computerized random sampling from all 19 counties in Taiwan. Measurement: Diagnosis of dementia using the criteria recommended by the National Institute on Aging-Alzheimer’s Association. Lifestyle factors, dietary habits and demographic data were compared between normal subjects and participants with dementia. Results: A total of 10432 residents were assessed, among whom 2049 were classified as having a mild cognitive impairment (MCI), 929 were diagnosed with dementia, and 7035 were without dementia or MCI. After adjustment for age, gender, education, body mass index (BMI), dietary habits, habitual exercises and co-morbidities, including hypertension, diabetes and cerebrovascular diseases, we found inverse associations of dementia with the consumption of fish (OR 0.62, 95% CI 0.41-0.94), vegetables (OR 0.35, 95% CI 0.13-0.95), coffee (OR 0.59, 95% CI 0.35-0.97), green tea (OR 0.51, 95% CI 0.34-0.75) and other types of tea (OR 0.41, 95% CI 0.28-0.60). There was no association between dementia and fruit consumption. Compared with people who had a normal BMI (18 < BMI <= 24), older overweight people (24 < BMI <=30) had a reduced risk of dementia with an adjusted OR of 0.77 (95% CI 0.61-0.96). Conclusions: Our study provides preliminary evidence that suggests that the consumption of fish, vegetables, tea, and coffee has potential benefits against dementia in East Asian population. Being modestly overweight (nadir risk at BMI = 25) in late life was associated with decreased odds of dementia. The benefit of fruits may be offset by their high sugar content.
Performance Prediction Of Production Lines Using Machine Learning Algorithm
Authors: Adesiyan Ayomide Emmanuel
Published: November 2021

Manufacturing today considers data-drive business operations at different levels leading to the growth of various paradigms in manufacturing, of which emerged smart manufacturing.

However data can be used to predict equipment failure rates, streamline and optimize inventory management and prioritize processes.

The use of parameter tuning and optimization, grid-search, cross-validation, to predict the best performing machine learning algorithm. This research work evaluates the time potential failure-rates, against the lines which peaks and drops depending on its components RUL(Remaining Useful Life). The accuracy of the machine learning algorithms that are employed in this studies, are hence subjected to some metrics for evaluation, these are : MCC and AUC-ROC.

This study has analyzed and evaluated some annoymized dataset from a manufacturing company, using some metrics and machine learning algorithms for performance prediction of their production lines using unsupervised learning. This study would served as a good reference for anyone wanting to use the best performance model, for further research work.
Elegant Computational Intensive Task

Offloading Scenario for Android
Authors: KALUTI MAHESH
Published: November 2021

Despite the technical changes and enormous day by day upgradiation in the field of mobile computing the smart devices as well as IOT devices had experienced tremendous technical glitch, which narrow’s the life span and survivability of small scale processing devices. Today, end users are becoming more demanding and are expecting to run computational intensive tasks on their Smart phone devices and IOT devices. Therefore, virtual cloud computing (VCC) integrates local device computing and Cloud Computing (CC) in order to extend computational capabilities of smart phone devices and IOT devices using cloud offloading techniques. Computation Offloading tackles limitations of Smart phone devices and IOT devices such as limited battery duration, limited computational capabilities, and limited storage capacity by offloading the execution and workload to cloud which has better systems with better computation and storage capabilities.

This paper aims to present the techniques to offload computational intensive tasks to cloud framework and analyses them along with traditional local execution techniques and their issues. Furthermore, it explores other important parameters based on which the applications are implemented such as offloading technique and partitioning of tasks.
Nanogels obtained by gamma radiation induced polymerization
Authors: Shafie Nur Fathin Amirah , Hamzah Mohd Yusof , Ali Roshafima Rasit
Published: November 2021

The influence of 2-(dimethylamino)ethyl methacrylate (DMAEMA) concentration on the temperature sensitivity of nanogels based on N-isopropylacrylamide (NIPAAM), poly(vinylpyrrolidone) (PVP), poly(ethylene glycol) diacrylate (PEGDA) by gamma radiation induced polymerization was investigated. Dynamic light scattering (DLS) and zeta potential measurements were used to characterize the nanogels. Temperature has been found to cause the nanogel particles to swell and shirnkage, allowing controlled dosing of the drug contained in capsules. The developed nanogels are promising materials with great potential for biomedical applications.
The impact of COVID-19 related regulations and restrictions on mobility and potential for sustained climate mitigation across the Netherlands, Sweden and the UK: A data-based commentary.
Authors: Corker Elizabeth , Mitev Kaloyan , Nilsson Lewis Astrid , Tamis Milan , Bouman Thijs , Holmlid Stefan , Lambe Fiona , Michie Susan , Osborne Matthew , Renes Reint Jan , Steg Linda , Whitmash Lorraine
Published: November 2021

Human behaviour change is necessary to meet targets set by the Paris Agreement to mitigate climate change.
Restrictions and regulations put in place globally to mitigate the spread of COVID-19 during 2020 have had a substantial impact on everyday life, including many carbon-intensive behaviours such as transportation. Changes to transportation behaviour may reduce carbon emissions. Behaviour change theory can offer perspective on the drivers and influences of behaviour and shape recommendations for how policy-makers can capitalise on any observed behaviour changes that may mitigate climate change. For this commentary, we aimed
to describe changes in data relating to transportation behavioursrelating to working from home during the COVID-19 pandemic across the Netherlands, Sweden and the UK. We display these identified changes in a concept map, suggesting links between the changes in behaviour and levels of carbon emissions. We consider these changes in relation to a comprehensive and easy to understand model of behaviour, the COM-B, to understand the capabilities, opportunities and behaviours related to the observed behaviour changes and potential policy to mitigate climate change. There is now an opportunity for policy-makers to increase the likelihood of maintaining pro-environmental behaviour changes by providing opportunities, improving capabilities and maintaining motivation for these behaviours.
The Thread of the Virtual Movement from Wölfflin to Lynn
Authors: Colonnese Fabio
Published: November 2021

All buildings move under the effect of physical forces of the earth. It is unperceivable, but they move. Some of them are also designed to move to perform their functions. However, most of them look absolutely still. Nevertheless, architects, critics, and historians of architecture often borrowed terms from scientific disciplines to describe a building or parts of it as if it is actually moving. Since antiquity, artistic literature has been full of »dynamized« descriptions of artwork virtually set in motion to enhance the narrative quality of the communication, but in architecture this happens only from the end of the 18th century onward. Since the end of the 19th century, a sequence of scholars and architects Heinrich Wölfflin, Colin Rowe, Peter Eisenman, and Greg Lynn have been developing a series of analytical and design tools that were used to introduce (or to query) time and motion in architecture, who different forms are here presented, classified, and discussed.
»Reclaiming« the City: A Collective Endeavor
Authors: Ilchenko Sergiy
Published: November 2021

This contribution elaborates upon the appropriation of urban space in spatiotemporal and procedural interventions in the example of the city of Kharkiv, as well as the impact of urban space on the process of how various groups rediscover and use various parts of the city. Being moved during collective actions - in the sense of feeling urged to move along - goes beyond routine practices by influencing the city and its perception. It seems that these general processions, celebrations, and festive activities of the residents are their contributions to the process of »urban renaissance« - the rebirth of interest in the urban way of life. Since public spaces reflect the historical inheritance of local communities, joint transformative actions such as, »appropriation«, »production«, and »governance« of urban spaces are considered. This article advocates for the practice of domestication of urban space by the local community, as well as the need for the existence of »urban lagoons« - free (unregulated) areas of the city used as resources for urban development and interaction of citizens.
Cardiopatías congénitas, tratamiento quirúrgico y sus complicaciones en población pediátrica del Hospital Vicente Corral Moscoso, 2017- Agosto 2019
Authors: Picón Rodríguez Jennifer Pamela , Marcano Sanz Luis Enrique , Pinos Vélez Erika Aracely , Peña Cordero Susana Janeth , Arévalo Peláez Carlos Eduardo
Published: November 2021

BACKGROUND: The heart is the most commonly affected organ by congenital diseases, with and incidence of 0.8 per 100 newborns. Nearly two thirds of all the surgical procedures are now a days performed before the first year of life, improving survival rate and life quality. This study aims to determine the frequency of the surgical interventions performed to treat congenital heart diseases and its complications. METHODS: An observational, descriptive cross sectional study was carried out; with 70 pediatric patients diagnosed and surgically treated for congenital heart diseases. The data was collected from the patient’s medical records using a form. Statistical analysis was performed using SPSS version 15 software. RESULTS: The median age was 1.1 years, 60% of the sample were women. 90% of the heart diseases were non-cyanogenic. The most frequent diagnosis was: persistence of the arterial duct (58.57%), followed by interventricular communication (12.86%). The type of procedures corresponds to the heart disease, thus 58.57% were performed for closure of arterial duct persistence and 12.86% were surgical repairs for closure of interventricular communication. The median stay in the intensive care unit was 4 days and the median stay in general hospitalization room was 5 days. The main complications in this pediatric population undergoing a surgical procedure were: pneumonia (11.4%) and sepsis of unspecified origin (8.6%). CONCLUSION: Treatment for heart diseases were performed at early ages (average age= 2.5±3.2). More than half of the surgical procedures for congenital heart disease were performed to correct the persistence of the ductus arteriosus, the main complication was pneumonia.
Reporte de Caso Clínico: Linfangioma quístico de epiplón
Authors: García Ordóñez Galo Fabián , Guillermo Cornejo Andrea Priscila , García Ordóñez Luis Fernando , García Ordóñez Danny Renán , Siavichay Romero Gerardo Mauricio
Published: November 2021

BACKGROUND: Mesenteric lymphangioma is a rare, benign congenital cystic tumor of the lym-phatic vessels, which occurs in less than 5% pf the cases at the abdomen. They appear most often during childhood. This tumor should be considered as a differential diagnosis of acute abdomen and other abdominal masses. CASE REPORT: A 6-year-old boy presented with abdominal pain and peritonism. He presented a low-grade fever, a positive rebound sign, as well as leukocytosis and neutrophilia. Ultrasono-graphy showed abundant free fluid in abdomen and pelvis. EVOLUTION: Exploratory laparotomy was performed, finding a cystic mass dependent on the greater omentum, this mass was resected. Histopathology was negative for malignancy and compatible with cystic lymphangioma, immunohistochemistry was positive for D2-40 marker. The patient evolved favorably without surgical complications and without evidence of recurrence up to one year of follow-up. CONCLUSION: Mesenteric cystic lymphangioma can present with symptoms of acute abdomen, it can also have a chronic evolution. Complete resection is the treatment of choice, currently minimally invasive procedures are performed with favorable results. Ultrasound is useful for long-term follow-up.
Pengembangan Buku Stimulasi dan Deteksi Tumbuh Kembang Anak Usia Dini Berbasis ICT
Authors: Rantina Mahyumi , Hasmalena Hasmalena , Karmila Nengsih Yanti
Published: November 2021

In the current era of globalization, parents, teachers, and all elements of society who are in the environment around early childhood learn to provide stimulation that is following the development of children. The wider and more open parenting science that can be accessed by parents, teachers and the community requires appropriate guidelines as a reference source to detect and stimulate children's development based on facts in the field. This is the background for researchers to develop and produce a book on stimulation and early detection of ICT-based early childhood development that is valid and practical. The research method used is Research and Development with the ADDIE model with requirements analysis procedures, prototype design, development, and evaluation implementation. The evaluation technique used is the Tessmer evaluation. Data collection techniques using observation, interviews, and documentation. The results of the research from experts, namely material experts and media design experts with very valid categories with proportions of 95.45% and 89.58% respectively, so that the product is feasible to be continued on a small-scale trial. So that the development of a guidebook for stimulation and early detection of growth for children aged 0-6 years is very valid to be tested as a guidebook for teachers and parents in stimulating and detecting the growth of children aged 0-6 years.
TECHNOLOGICAL INNOVATION IN INTEGRATION AND INTERCONNECTION OF SCIENCE IN ISLAMIC HIGHER EDUCATION
Authors: Syauqi Malik Muh
Published: November 2021

Technological progress cannot be hindered because today, education is entering the industrial era 4.0 characterized by education that uses digital technology in the learning process. With the use of this technology, the learning process is not limited to space and time. The terms religious knowledge and general science should not exist. Science is one unit because its source is from the Koran. This study aims to explain technological innovation in the integration and interconnection of science in Islamic higher education. This research is a research library. Therefore, what is done is exploring several data by examining in-depth reference sources from national and international journal articles and reading books relevant to the research. The data collection method that researchers use is by collecting books, articles, journals, and opinions which reveal and study the Interconnection Integration. The study results indicate that the integration and interconnection of knowledge can be achieved if learning refers to the principles of integration between Hadarah an-Nash, Hadarah al-Ilm, and Hadarah al-Falsafah. Technological advances can be used to achieve these goals, such as e-learning, digital learning resources, and teleconferencing.
ANALYSIS OF THE SUBJECT MATTER OF ART AND CULTURE CLASS III MI/SD, CONFORMITY OF CHARATERISTICS, HOTS, AND 4C
Authors: Pitriani Siti
Published: November 2021

The analysis of the subject matter of Cultural and Arts and MI / Elementary Workshops conducted by the author aims to find out the relevance of the subject matter contained in the Thematic Book of teachers and class III students of the 2013 revised 2018 curriculum with the scope of the subject matter of Cultural Arts and MI / SD Crafts which includes competencies knowledge and skills, characteristics and development of MI / SD Art and Cultural Materials, analyzing KI-KD and their relevance to MI / SD Art and Cultural structure, characteristics of student development, HOTS, 4C (Critical Thinking, Creativity, Communication, Collaboration ), cultural and citizenship literacy and character education, and innovation. The method used is the type of library research. Collection and review of reference indicators for the analysis of the subject matter of Art and Culture and Grade III elementary / MI. The research method used is the type of library research. The results of the analysis state that the relevance of the scope of Culture and Arts and Crafts in Permendikbud number 21 2016 on Basic and Secondary Education Content Standards with the 2013 Revised 2018 Curriculum Student Book is considered to be relevant. Characteristics of Cultural Arts and MI / Elementary Workshops include aspects of fine arts, aspects of music, aspects of dance and aspects of skills. Characteristics of student development are in a concrete operational stage. Hots Distribution (Critical Thinking 24%, Problem Solving 9%, and Creative Thinking 67%). 4C distribution (Critical Thinking 23%, Communication 6%, Collaboration 8%, and Creativity 63%). Cultural and citizenship literacy as well as character education are listed in the subject matter of Cultural Arts and the Revised Workshop of 2018 books of teachers and class III students. The innovations offered in the learning of Arts and Culture and MI / SD Crafts are using interactive multimedia that is relevant to the development of science and technology in the era of the industrial revolution 4.0.
ACTUALIZATION OF RELIGIOUS MODERATION TOWARDS A SOCIETY 5.0 ERA THROUGH UNDERSTANDING EDUCATION MANAGEMENT, MENTAL HEALTH AWARENESS, AND ORGANIZATIONAL ACTIVITY
Authors: Uzma Qatrunnada Almas , Lessy Zulkipli , Naufal Agniansyah Muhammad , Zulfa Rohima , Samsudin Juhri Wafa , Khoirohnissah Diah
Published: November 2021

Currently the presence of the millennial generation is sunnatullah, the emergence of this generation is due to advances in science and technology. Millennials rely heavily on social media, however, they do not yet have a strong filter to be able to filter the information they receive. The millennial generation also has challenges in facing a new era in their life, namely the era of society 5.0 as a complement to the 4.0 Industrial Revolution. In this instantaneous era, various religious problems that never end, such as rampant politicization, terrorism, radicalism, extremism, disintegration, misuse of da'wah, exploitation of the people, so many hate speeches, hoaxes and slander are now flooding the faces of the diversity of the nation. In relation to this impact, the level of understanding of education management, mental health awareness, and organizational activeness turned out to be greatly influences human behavior, especially for new students who are vulnerable to invitations from outside influences. Facing an era like this, it is time for the millennial generation to take part in actualizing the moderation of religion as a solution to religious problems.
From Searching for Cultural Integrity to Symbolism of Temple Building and the Organic Picture of Reality
Authors: VOREL Jan
Published: November 2021

The article is focused mainly on aesthetic-philosophical constants of the work of art of Julius Zeyer. The author of the article tries to point out that Zeyer´s conception of art is tightly connected with artistic conceptions of the rising literary symbolistic generation: His aesthetic-philosophical system contains strong protest against rationalism, realism and naturalism in contemporary literature and underlines the way to subconscious roots of human existence; it turns away from rational understanding of the world and the mystical intuition of inner and organic life in modern literature. In the article the motifs of temple building and motifs of creating the organic picture of the world in Zeyer´s work of art are analysed. The article also contains main references to Zeyer´s work of art published by reputable names of the Czech and European literary criticism.
Von der charismatischen Herrschaft zum ‚digital leader‘: Führung im Wandel?
Authors: Elias Friederike , Valarini Elizangela
Published: November 2021

Im Zuge der digitalen Transformation wird eine grundlegende Veränderung der Organisationsstrukturen von Unternehmen postuliert, die eine schnelle Anpassung an sich wandelnde Umweltanforderungen gewährleisten soll. Im Managementdiskurs werden in diesem Zusammenhang unter dem Label „digital leadership“ oder „agile Führung“ neue Führungskonzepte lanciert. Wir fragen in unserem Beitrag, ob es aktuell tatsächlich zu einer umfassenden Reorganisation der Führungsbeziehung kommt. Auf Basis von 36 Interviews mit Führungskräften aus Industrie- und Dienstleistungsunternehmen haben wir eine wissenssoziologische Deutungsmusteranalyse durchgeführt und deren Ergebnisse einer kritischen Betrachtung unterzogen. Unsere Ergebnisse zeigen eher Kontinuitäten im Führungsverständnis der deutschen ManagerInnen auf als einen grundlegenden Bruch. Vielmehr verstärkt der Digitalisierungsprozess die Durchsetzung des partizipativen Führungsstils – eine Entwicklung, die empirische Studien bis in die frühen 1980er Jahre zurückverfolgt haben.
On (m, P)-expansive operators: products, perturbation by nilpotents, Drazin invertibility
Authors: Duggal B.P.
Published: November 2021

A generalisation of m-expansive Hilbert space operators T ∈ B(ℋ) [18, 20] to Banach space operators T ∈ B(𝒳) is obtained by defining that a pair of operators A, B ∈ B(𝒳) is (m, P)-expansive for some operator P ∈ B(𝒳) if Δ
A,B
m
(P)=

(

I
-

L

A

R

B

)

m

(
P
)

=

∑

j
=
0

m

(

-
1

)

j

(

j
m

)

{\left( {I - {L_A}{R_B}} \right)^m}\left( P \right) = \sum\nolimits_{j = 0}^m {{{\left( { - 1} \right)}^j}\left( {_j^m} \right)}

AjPBj
≤0; LA(X) = AX and RB(X)=XB.

Unlike m-isometric and m-left invertible operators, commuting products and perturbations by commuting nilpotents of (m, I)-expansive operators do not result in expansive operators: using elementary algebraic properties of the left and right multiplication operators, a sufficient condition is proved. For Drazin invertible A and B ∈ B(ℋ), with Drazin inverses Ad and Bd, a sufficient condition proving (Ad, Bd) ^ (A, B) is (m − 1, P)-isometric (resp., (m − 1, P)-contractive) for m even (resp., m odd) is given, and a Banach space analogue of this result is proved.
Deformation of designed steel plates: An optimisation of the side hull structure using the finite element approach
Authors: Prabowo Aditya Rio , Tuswan Tuswan , Prabowoputra Dandun Mahesa , Ridwan Ridwan
Published: November 2021

Thin-walled structures, which generally consist of unstiffened and stiffened plates, are widely used in engineering as one of the core features of any product or construction. Due to environmental conditions and working operation, the components of the structure unavoidably become subject to various types of loading. Deformation patterns and overall behaviour are expected to be varied, as different materials are considered in the structures. In this situation, assessments are required to quantify the responses and determine the relationships between the structural behaviour and structural parameters. In this work, we attempt to obtain the behaviour data of unstiffened and stiffened plates as components of thin-walled structures. The material class – i.e. low- and medium-carbon steels – and loading parameters (i.e. type and angle) are taken as the main inputs in the finite element analysis. A geometrical design is adopted based on the side hull structure of a medium-sized tanker, for which two plate types, unstiffened and stiffened, are used. The results indicate that increasing the loading angle reduces the force experienced by the plate, while the greater the loading direction angle is, the greater the total displacement value will be. In terms of the plate design, the stiffener is observed to reduce the force expansion during the loading of the stiffened plate.
Study on titanium dioxide nanoparticles as MALDI MS matrix for the determination of lipids in the brain
Authors: Peng Congnan , Zhang Qian , Liu Jian-an , Wang Zhen-peng , Zhao Zhen-wen , Kang Ning , Chen Yuxin , Huo Qing
Published: November 2021

The structures of lipids are diverse, and thus, lipids show various biological functions. Systematic determination of lipids in organisms has always been a concern. In this paper, a methodology on the matrix-assisted laser desorption ionization mass spectrometry (MALDI MS), with titanium dioxide nanoparticles (TiO2 NPs) as the matrix, was studied for lipid determination. The results showed that the following conditions were preferable in the determination of small-molecule lipids (such as hypoxanthine, guanosine, uridine, and cytidine), lipid standards (such as GC, GM, TG, phosphatidylethanolamine, phosphatidylcholine, and ceramide), and mixed lipids (extracted from brain homogenate with methanol alone and with the B&D method): TiO2 NPs as the matrix, absolute ethanol as the solvent, 1 mg of TiO2 NPs dispersed in 1 mL of absolute ethanol as the matrix solution, NaCl as the ionization reagent, and positive mass spectrometry (MS) as the mode. Modified TiO2 NP as a new matrix for MALDI MS will be a future research direction; in addition, the characteristics of TiO2 NPs make it a potential matrix for imaging MS.
Prediction model based on chemical composition change for the mechanical degradation of Korean pine (Pinus koraiensis) after brown-rot fungi (Gloeophyllum trabeum) invasion
Authors: Zhang Lipeng , Xie Qifang , Yang Liujie , Wu Yajie , Ma Xingxia
Published: November 2021

In order to predict the mechanical properties of Korean pine after brown-rot decay based on its chemical composition change, 252 samples were prepared and exposed to a 14-week accelerated laboratory decay test using the brown-rot fungus Gloeophyllum trabeum. The mass loss, parallel-to-grain compressive strength, parallel-to-grain tensile strength and bending strengths were tested. Then chemical components and scanning electron micrograph analysis were conducted every two weeks. Results indicated that the mass loss rates of the samples increased with the increasing decay time and were negatively correlated with the sample volume. The strength loss rates were positively correlated with the decay time and mass loss rates. After 14 weeks the average strength loss rates of the parallel-to-grain compressive, tensile and bending samples reached 32%, 41% and 41%, respectively. Strengths degradation was found sensitive to the change of cellulose and hemicellulose contents. Further, mathematical regression models were proposed based on the content changes of the cellulose and hemicellulose to quantitatively predict the degradation of the strengths of Korean pine after brown-rot decay.
Parametric optimization of friction stir processing on micro-hardness of Al/B4C composite
Authors: Kumar Sudhir , Kumar Kapil , Maurya Manish , Vishal
Published: November 2021

Friction stir processing was used to prepare aluminium metal matrix composite reinforced with B4C particles. The micro-hardness of the composite was improved by selecting the process parameters. Friction stir processing parameters, namely tool rotational speed, tool tilt angle and different pin profiles, were explored by using Taguchi’s L9 orthogonal array and analysis of variance. Optical microscopy and scanning electron microscopy were employed for microstructural analysis. X-ray diffraction was used to evaluate the residual stress. Experimental results illustrated that increased rotational speed, reduced tilt angle and square pin profile of the tool gave more uniform dispersal of B4C content with maximum micro-hardness. Small amounts of compressive residual stress developed at the stirred and thermo-mechanically affected zones confirmed the adequate improvement in micro-hardness. Micro-hardness of fabricated Al 6063/B4C composite surfaces was enhanced by 30% as compared to Al 6063 alloy.
Calcium substituted with magnesium, silver and zinc in hydroxyapatite: a review
Authors: Mahanty Anuradha , Shikha Deep
Published: November 2021

Hydroxyapatite with the chemical formula Ca10(-PO4)6(OH)2 is an important bioceramic well known for its high osteoconductive properties, non-toxic nature, high bioactivity and good biocompatibility. Moreover, it is known to mimic natural bone. Inspite of the above mentioned advantages, it has certain disadvantages such as having poor mechanical properties, being brittle, not showing an inhibitory effect on microbes and taking a long time to resorb in the body. These disadvantages can be covered up by the addition of dopants which include cations, anions and polymers. These are sufficiently known to improve the properties of hydroxyapatite. This review focuses on the substitution of hydroxyapatite with silver, zinc, magnesium ions and alloys to show the changes in the morphology and biocompatible properties of hydroxyapatite after substitution of the ions in the matrix.
Composition design, microstructure, and mechanical properties of novel Ti–Co–Ni–Zr complex concentrated alloys
Authors: Wu Junxia , Li Peiyou , Dong Hongfeng , Jia Yuefei , Liu Yaling , Zhang Wei , Zhang Mina
Published: November 2021

The composition design of complex concentrated alloys originates from the composition design of amorphous alloys. To expand the composition design of alloys, herein, the compositions of novel Ti–Co–Ni–Zr complex concentrated alloys were obtained by the proportional mixing of Ti2Co intermetallics and Ni64Zr36 binary eutectic. The theory and method of this new alloy design are also discussed. The as-cast Ti28Co14Ni37.12Zr20.88, Ti30Co15Ni35.2Zr19.8, and Ti32 . Co16Ni33.3Zr18.7 alloys were composed of body-centered cubic TiNi and Ti2Ni phases. The Ti28Co14Ni37.12Zr20.88 alloy exhibited high yield strength (2 164 MPa) and compressive strength (2 539 MPa) under quasi-static compression at roomtemperature. The high strength of Ti28Co14Ni37.12Zr20.88 alloy is related to the precipitation of Ti2Ni along the grain boundary and the precipitation in the crystal. This paper validates that using the proportional mixing method of intermetallics and eutectic alloy is an effective method to design complex concentrated alloys with high strength.
Notstand und Sachverstand
Authors: Middendorf Stefanie
Published: November 2021

In the aftermath of the First World War, the Weimar Republic found itself in financial disarray. Originally put forward by the antirepublican right, the idea of a forced loan emerged. The idea triggered harsh controversies regarding the shortfalls in the new state’s sovereignty and its lack of fiscal power within the framework of an international order. The conflicting images of the Weimar state effected the decisions finally taken. This article argues that a rhetoric of emergency was combined with notions of the expert as an apolitical figure in order to legitimize compulsory lending. Yet, contrary to contemporary perceptions, the Weimar forced loan was not a result of governmental impotence or an exceptional incident within the history of public finance. As a political tool, it helped to solve conflicts on the national as well as the international level, if only for a short period of time. As an instrument of state finance, it was not an act of failure to still fiscal needs the ‚normal way‘ but a conscious claim for the autonomy of the Weimar state. But the conviction that compulsory loans might be a legitimate element of fiscal politics under the auspices of a strong and well-informed state emerged only with the Second World War – in Germany as well as on an international level.
Green-synthesis of Ag2O nanoparticles for antimicrobial assays**
Authors: Fayyadh Ali Abdullah , Jaduaa Alzubaidy Muneer H.
Published: November 2021

Silver oxide nanoparticles (Ag2O NPs) in the aqueous colloidal state were synthesized using the green method. Aqueous silver nitrate was prepared and mixed jointly with an aqueous extract of Lawsonia inermis (henna) leaf and heated with stirring at 75 °C for 1h. Then, an aqueous colloidal solution of Ag2O NPs with a dark brown colour is forming. The physicochemical characterization of Ag2O NPs was studied using different techniques. A polycrystalline structure of (Ag2O/Ag) in face-centred cubic and cubic phases was revealing via grazing incident X-ray diffraction (GIXRD) patterns. Energy-dispersive X-ray analysis (EDX) spectra confirmed GIXRD results through peaks corresponding to the silver and oxygen elements making up the accurate composition of the silver oxide. UV-Vis absorbance peak of the localized surface plasmon resonance (SPR) appeared at the visible region and exhibited a blueshift at ∼425 nm with an energy bandgap ∼2.8 eV. The surface morphology and the size of the silver nanoparticles were analyzed using high resolution (FE-SEM) microscopy. FTIR spectra of Ag2O NPs has showed a shift in the bands compared to those produced by aqueous extract of the henna leaf (only). (0.4 molars) Ag2O NPs has showed excellent antimicrobial activity assays against all the pathogens microbe's strains. Henna plant extract (only) has showed poor activity compared to Ag2O NPs. In comparison, the inhibition zone diameter of the gram-negative Bacteria is more considerable than the gram-positive bacteria. Moreover, Ag2O NPs activity against Bacteria is more prominent than fungi.
Effects of remifentanil and propofol on distant organ lung injury in an ischemia–reperfusion model
Authors: Kanbak Orhan , Aydoğan Burcu , Gümüş Tülin
Published: November 2021

Our aim was to evaluate lung injury due to oxidative stress and antioxidant activity levels in an infrarenal ischemia–reperfusion model and to compare prevention effects of single and combined use of propofol and remifentanil. In this study, a total of 40 adult Wistar Albino rats were randomly divided into five groups of eight rats as SHAM, physiological saline, intraperitoneal propofol, remifentanil, and propofol and remifentanil groups. Blood and tissue samples were obtained after 80 min of reperfusion. The malondialdehyde (MDA) level, a measure of lipid peroxidation, was measured in lung tissue samples and red blood cells; additionally, total oxidant status and total antioxidant capacity of lung tissues were measured and histopathological examination was performed. Distant organ (lung) injury developed due to lower extremity ischemia–reperfusion was created by infrarenal aortic clamping. The lipid peroxidation product MDA and total oxidant levels were increased, but there was insufficient antioxidant protection both in the lung tissues and red blood cells. While propofol prevented this injury consistent with its proposed antioxidant properties; no protective effect of remifentanil was observed. On the contrary, it showed oxidative stress increasing effect. This study concluded that the antioxidant effect of propofol was suppressed by remifentanil in the case of combined use.
Experimental study on enhancement characteristics of steam/nitrogen condensation inside horizontal multi-start helical channels
Authors: Wen Jianjun , Dou Zhi , Zhong Jiaqi , Niu Yonghong , Hu Zhenwei , Zheng Dan
Published: November 2021

The aim of this study was to reveal the internal mechanism of enhanced condensation heat transfer, by experimentally performing steam condensation with higher inlet velocity in the horizontal multi-start helical channels (HMSHCs), and investigating the influences of pressure of steam, mass flowrate of cooling water, and mass fraction of noncondensable (NC) gas on steam condensation performance. Taking steam condensation in horizontal circular condensation channel (HCCC) as a reference, the condensation heat transfer coefficients (CHTCs), the outlet condensate mass flowrates (CMFRs), and the total steam condensation pressure drops (SCPDs) were compared and discussed, respectively. The results indicated that NC gas had a strong inhibitory effect on steam condensation, and average condensation characteristics decreased with the increase in NC gas fraction for lower Rem. But for higher Rem, the gas–liquid interfacial shearing stress can likely weaken the negative effect of NC gas. In addition, increasing the cooling water flowrate can entirety promote steam condensation. The comparison results indicated that steam condensation performance of HMSHC is better than that of HCCC under same experimental conditions. For the specific experimental scope, the average CHTCs and the outlet CMFRs in HMSHC are approximately 2.35 and 1.25 times of that inside HCCC, respectively, while the overall SCPDs in HMSHC are about 1.16 times of that inside HCCC. After introducing the performance evaluation factor, the calculation results revealed that the performance evaluation factor

h

PEC

{h}_{\text{PEC}}

of the average CHTCs in HMSHC is approximately 2.02, and the performance evaluation factor

m

PEC

{{m}}_{\text{PEC}}

of the outlet CMFRs in HMSHC is approximately 1.08. The two evaluating values are reasonable.
A decade of research on housing and health: a systematic literature review
Authors: Alidoust Sara , Huang Wei
Published: November 2021

This paper provides a systematic review of the evidence linking housing and health. This involved a review of 59 peer-reviewed journal papers, that included case studies on the health impacts of housing and were published in English, in the past decade (2010–2020). Our systematic review of the literature suggested most of the research on the health impacts of housing employed quantitative methodology, were conducted in the Global North and were published in Medical and Health Sciences journals. Research findings demonstrated four key areas through which housing impacts health: neighbourhood or context, physical building, housing market and housing policy. This paper provides valuable information to researchers for future research directions on the associations between housing and health and to decision-makers and planners for planning healthy cities.
Frontiers in mathematical modelling of the lipid metabolism under normal conditions and its alterations in heart diseases
Authors: Bocharov Gennady A. , Grebennikov Dmitry S. , Savinkov Rostislav S.
Published: November 2021

Pathophysiology of ischemic heart disease is a complex phenomenon determined by the interaction of multiple processes including the inflammatory, immunological, infectious, mechanical, biochemical and epigenetic ones. A predictive clinically relevant modelling of the entire trajectory of the human organism, from the initial alterations in lipid metabolism through to atherosclerotic plaque formation and finally to the pathologic state of the ischemic heart disease, is an open insufficiently explored problem. In the present review, we consider the existing mathematical frameworks which are used to describe, analyze and predict the dynamics of various processes related to cardiovascular diseases at the molecular, cellular, tissue, and holistic human organism level. The mechanistic, statistical and machine learning models are discussed in detail with special focus on the underlying assumptions and their clinical relevance. All together, they provide a solid computational platform for further expansion and tailoring for practical applications.
Numerical evaluation of the effectiveness of coronary revascularization
Authors: Simakov Sergey S. , Gamilov Timur M. , Liang Fuyou , Gognieva Daria G. , Gappoeva Mariam K. , Kopylov Philipp Yu.
Published: November 2021

In the present paper we construct the model of coronary flow which utilizes the patient’s CT data on both large CA and perfusion. We reconstruct large coronary vessels based on the CT data and extrude possibly invisible vessels from the branches of the left coronary artery so that every terminal point supply every of standardized zone of myocardium. We apply a previously developed and validated 1D model of haemodynamics. Utilizing the patient-specific CTP data for modifying outflow terminal resistance at rest and under stress conditions is the major novelty of the present work. From our results it follows that acceptable values of fractional flow reserve (FFR) after the stenotic treatment may produce false negative output. Therefore healthy FFR values may be observed after ineffective revascularization. We also conclude that microvascular perfusion impairment plays significant role in correct computational estimation of haemodynamic indices before stenotic treatment. The advantage of the presented approach is the availability of transmural perfusion ratio assessment in everyday practice.