bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance de l’oxymétrie nocturne dans le diagnostic du Syndrome d’apnées Hypopnées Obstructives du sommeil à Kinshasa
Authors: Tete Boniface Okaka , Boono Bejamin Yaba , Muhala Blaise Luhepa , Akilimali Pierre Zalagile , Bisuta Serge Fueza , Makulo Jean Robert Rissassy , Kayembe Jean-Marie Ntumba
Published: December 2022

Contexte et objectif. La prise en charge d’un patient avec un syndrome d’apnées hypopnées obstructives du sommeil (SAHOS) nécessite l’enregistrement du sommeil qui reste très peu accessibilité en Afrique subsaharienne. La présente étude a évalué la performance de l’oxymétrie nocturne dans le diagnostic du SAHOS à Kinshasa. Méthodes. Dans une étude transversale et analytique, tous les patients à risque de SAHOS ont bénéficié d’une oxymétrie nocturne et d’une polygraphie ventilatoire entre juillet 2021 et mars 2022. La sensibilité (Se), la spécificité (Sp) et les valeurs prédictives positive (VPP) et négatives (VPN) de l’oxymétrie nocturne ont été déterminées. La courbe ROC a été rapportée, aire sous la courbe (ASC) calculée, p < 0,05. Résultats. 323 patients ont été inclus (âge moyen de 57,9 ± 13,1 ans avec un sex ratio H/F de 1,5). L’obésité centrale était présente chez 88 %. Le STOP-BANG moyen était de 4,8 ±0,9. Les comorbidités les plus rencontrées étaient l’HTA (58,5%), le diabète sucré (22,6%), la BPCO (9,3%) et l’AVC 2,2%. La Se et Sp étaient respectivement, de 94,4 et 88,9% et ASC à 0, 92. Conclusion. L’oxymétrie nocturne est un examen non invasif d’accès facile ayant une sensibilité et une spécificité élevée dans le diagnostic du SAHOS dans notre milieu.

English title: Performance of nocturnal oximetry in the diagnosis of Obstructive Sleep Apnea Hypopnea Syndrome in Kinshasa

Context and objective. Management of a patient with obstructive sleep apnea syndrome (OSAS) needs a sleep recording which is unavailable in sub-Saharan Africa. The present study aimed to evaluate the performance of nocturnal oximetry in the diagnosis of OSAHS in Kinshasa. Methods. In an analytical cross-sectional study, patients at risk of OSAHS underwent nocturnal oximetry and ventilatory polygraphy between July 2021 and March 2022. The sensitivity (Se), specificity (Sp) and positive (PPV) and negative (VPN) predictive values of nocturnal oximetry were determined. ROC curve was reported, area under the curve (AUC) calculated, p<0.05. Results. 323 patients were involved (average age of 57.9±13.1 years with a sex ratio M/F of 1.5). Abdominal Obesity was present in 88% of patients. The mean STOPBANG was 4.8 ±0.9. The most common comorbidities were hypertension (58.5%), diabetes mellitus (22.6%), Chronic Obstructive Pulmonary Disease (COPD) (9.3%) and stroke 2.2%. The Se and Sp were 94.4 and 88.9% respectively and AUC was 0.92. Conclusion. Nocturnal oximetry is a non-invasive examination of easy access with high sensitivity and specificity in the diagnosis of OSAHS in our environment.

Keywords: Obstructive sleep apnea syndrome, nocturnal oximetry, ventilatory polygraphy, performance, Kinshasa
A rare variant branch from the lateral cord and a communicating branch between the musculocutaneous and median nerve
Authors: Njoroge Felix , Nurani Khulud , Odero Noel , Njoroge Jimmy
Published: December 2022

During routine educational gross anatomy dissections of the upper extremities, one right upper limb was observed to have an unusual branch from the  lateral cord that pierced coracobrachialis towards its origin. This variant branch emerged from the lateral cord before it branched to give its contribution  to the median nerve and musculocutaneous nerve in the axilla. The same limb also had a communicating branch between the musculocutaneous nerve  to the median nerve at the mid arm level. These variations may be of interest to neurologists, anatomists and surgeons operating in the upper limb  region.
Quality assessment of biodiesel produced from Caesalpinia pulcherrima (Pride of Barbados)
Authors: Uba S. , Omoniyi K.I. , Mikail A.H. , Ikeh D.C. , Adeosun S. , Sani A.
Published: December 2022

Alternative energy sources from vegetable products are developing as a response to the depleting fossil fuel reserves and the environmental damage caused by their burning. Among these different possible resources, biodiesel has received a lot of interest as a diesel engine fuel substitute because it is renewable, non-toxic, eco-friendly, etc. This study evaluated the quality assessment of production of biodiesel from Caesalpinia pulcherrima. The sample oil was extracted from the seeds of Caesalpinia pulcherrima using a soxhlet extractor with n-hexane; the results obtained showed low yield of 27 ± 0.1 % for the extracted oil. The physicochemical properties of the oils sample were found to be as follows: Saponification value: 142.87 mgKOH/g, peroxide value: 7.70 mEq O2/kg, acid value : 30.49 mg KOH/g, iodine value (IV): 23.15 g I2/100g, viscosity: 5.83 mm2 /sec, specific gravity: 0.90. The value of free fatty acid gotten was 15.43. The oil was transesterified using two-step transesterification due to their high free fatty acid (FFA) using sodium hydroxide as catalyst. The biodiesel produced was analyzed for its fatty acid profile using GC-MS and fuel properties using ASTM Methods. The Caesalpinia pulcherrima oil obtained for use in the production of biodiesel was clear, viscous, and yellowish in color. The result of the transesterification reaction was a transparent yellowish color liquid (biofuel) and the percentage yield was 71.73 %. The density of 0.86, pour point of -5.03 oC, cloud point of 5.83 oC, the specific gravity of 0.895, the kinematic viscosity of 5.37 mm2 /s, and an acid value of 1.1 MgKOH/g were all within the ASTM D6751 specification for biodiesel fuel. respectively. Results obtained infer that oil from Caesalpinia pulcherrima possesses properties that are suitable for biofuel production using ASTM standard.
A preliminary study of the bacteriological evaluation of raw milk from Kogi State University dairy farm
Authors: Azeez Z. , Yakubu E.H. , Enemuor S.C. , Momoh S.J.
Published: December 2022

Milk is a food that inherently favours microbial growth and due to its characteristics, several precautions must be taken to prevent contamination in its production, processing and consumption, which are routinely subject to changes. Raw milk is a complex mixture which is highly nutritious, contain high level of water (85%) and a pH close to neutral which makes it highly perishable and a suitable medium for the growth and multiplication of microorganisms. This study was carried out to evaluate the bacteria associated with raw milk from a dairy farm. A total of seven (7) raw milk samples were -gotten from different lactating cows. The samples were examined for pH, organoleptic property, and turbidity. Isolation of bacteria was done using the pour plate method, gram staining and various biochemical test were conducted to identify the organisms. The pH value of the samples ranged from 6.5 to 6.9. The total bacterial count ranged from 4.3x106 to 9.0x104 CFU/ml, and total coliform count ranges from 5.1x106 to 4.0x104 the bacteria isolated were Bacillus spp Escherichia coli, Staphylococcus aureus, Klebsiella spp and Streptococcus spp. The high bacteria count obtained in this study is an indication of poor sanitary condition and this calls for strict hygienic measure during handling of raw milk and its products.
Effect of hydrolysis time and peptide content on dpph* radical scavenging activity of bromelain- and papain-generated hydrolysates from defatted cocoa beans (Theobroma cacao l.) powder
Authors: Olanrewaju O.A. , Auwal S.M.
Published: December 2022

Enzyme generated protein hydrolysates have received considerable attention due to their numerous health effects. Among these, the anti-oxidative hydrolysates with DPPH* radical scavenging activity can play a significant role in the prevention of oxidative stress and the resulting chronic disease conditions such as cancer. In the present study, defatted cocoa beans (DCB) powder was dialyzed and then hydrolyzed for 8 h to produce DCB protein hydrolysates using two different proteases (bromelain and papain) at an optimum pH (6.8), temperature (400C) and enzyme/substrate ratio (1:50). The resulting DCB protein hydrolysates were evaluated for peptide content (PC) and DPPH* radical scavenging activity. The highest DPPH* radical scavenging activity of 78.07% and 53.04% were obtained at a peptide content of 4.85 mg/dL and 3.13 mg/dL for the bromelain- and papain-generated DCB protein hydrolysates at 6 h hydrolysis time, respectively. The effect of hydrolysis time and peptide content on the DPPH* radical scavenging activity of the DCB protein hydrolysates was then studied. The result obtained indicated positive correlation between the DPPH* radical scavenging activity of both bromelain- and papain-generated DCB protein hydrolysates to their peptide content based on Pearson’s correlation analysis with R2 values of 0.946 and 0.772, respectively.
LETTERS TO THE EDITOR: Human health & hazards to humans: pretection from the African giant rat
Authors: Cooper Ross G
Published: December 2022

No Abstract.
The prevalence of lower back pain and absenteeism and their associations with self-reported exercise patterns in workers at a South African poultry abattoir
Authors: Kritzinger Sarel , Kruger Willem , Joubert Gina
Published: December 2022

Lower back pain (LBP) is the most prevalent musculoskeletal condition in many industries, including the meat-processing industry, with previous research confirming that workers in poultry abattoirs are at risk of developing LBP. Lower back pain is a major cause of sickness absenteeism, and regular exercise is considered beneficial to manage LBP among workers. Little is known about LBP and poultry abattoir workers in South Africa. The purpose of the study therefore was to describe LBP among these workers and explore possible associations between LBP and specific job designations, exercise patterns and sickness absenteeism. A descriptive study with an analytical component was conducted among workers at a poultry abattoir in South Africa. A structured questionnaire was used to collect the data regarding back pain experienced in the previous 12 months. The results indicated a 12-month prevalence of LBP of 77.6% (95% CI 70.6%; 83.3%), while 24.2% had to reduce work activities because of their LBP symptoms. However, more than half of the workers with LBP (59.4%) were not absent from work due to LBP. There was no significant association between LBP and exercises with 40.0% indicating that they exercised on a regular basis. This study indicated a high prevalence of LBP among workers whose job designation has an increased risk for musculoskeletal disorders, as reported in previous research. Work-related factors, such as job designations with repetitive movements should be identified and addressed in the management of LBP. Even though this study did not find a significant association between LBP and exercises, nearly half of workers indicated that they exercise on a regular basis. Additional research is needed to study the effect of exercise on LBP among workers in poultry abattoirs in South Africa.
Management of recurrent pheochromocytoma in pregnancy in a young Ghanaian
Authors: Akpalu Josephine , Ampong Charlotte , Atiase Yacoba , Yorke Ernest , Takyi Charles , Coleman Jerry , O. Darkwa Ebenezer , A. Adu-Aryee Nii
Published: December 2022

The co-existence of pheochromocytoma and pregnancy is rare, with poor maternal and foetal outcomes. This is a case report of a young Ghanaian woman with a pre-existing diagnosis of recurrent pheochromocytoma who became pregnant and experienced elevated blood pressure in the third trimester with proteinuria and abnormal liver function. She was managed as an in-patient and delivered a live baby via caesarean section at 34 weeks after detecting intra-uterine growth restriction. Management of such cases by a multidisciplinary team is recommended for optimal outcomes.
Spatial Distribution and Environmental Risk Assessment of Petrol Stations in Abeokuta Metropolis, Ogun State, Nigeria
Authors: Adedeji O. H. , Olayinka O. O. , Badejo A. A. , Osunde E. O.
Published: December 2022

This study examined the spatial distribution and risk associated with the proliferation and indiscriminate establishment of petrol stations in Abeokuta metropolis, Nigeria. All effective parameters in petrol stations risks were identified and assessed using Williams–Fine and FMEA methods for petrol stations in the metropolis while structured questionnaire was administered on respondents near the petrol stations to elicit relevant information. Number of existing petrol stations, road networks and other spatial attributes served as input into the GIS environment with ArcGIS 10.0. Distances between road edge and petrol station, petrol station and residential buildings and between petrol stations were determined using preset criteria. The fire risk assessment revealed that 88 of the petrol stations had high risk (range: >201) while 20 and nine had medium (range: 201-101) and low (range: <100) risks respectively. Majority (113) of the 117 active petrol stations in Abeokuta have few or no functioning fire extinguishing systems, which make them vulnerable to fire incidences. Risk analysis indicated that distances between petrol stations and residential buildings in the metropolis does not comply with the 450 m distance standard. Majority were located within residential, commercial and educational land use areas where they constitute environmental risks including fire disasters, and soil and groundwater pollution.
Identification and Antifungal Susceptibility Profiles of Yeast Urogenital Tract Infection among Women in Benin City, Nigeria
Authors: Oladugba E. O.
Published: December 2022

The incidence of candida infections is on the increase globally, with laboratories not performing speciation and susceptibility testing routinely. This study aims to speciate and determine the susceptibility profile of yeast isolates recovered from urogenital specimens. A total of 115 female participants with signs and symptoms of urogenital tracts infection attending various clinics in University of Benin Teaching Hospital Benin City, Nigeria were recruited for this study. A total of 55 mid-stream urine and 60 high vaginal swabs and or endocervical swabs were collected from the participants and processed to recover yeast isolates. The yeast isolates were identified and susceptibility test performed using standard techniques. The prevalence of candiduria - 54.55% and vaginal candidiasis - 63.33%, did not differ significantly (P = 0.4426). Age did not significantly affect the prevalence of candiduria and vaginal candidiasis (P = 0.0525 and P = 0.2194, respectively). Candida albicans was the most prevalent yeast isolate recovered from urine and genital specimens. Amphotericin B and nystatin were the most active antifungal agents while fluconazole was the least active. High prevalence of yeast urogenital tract infections was observed in this study.
Evaluation of Anticorrosion Potential of African Black Olive (Canarium schweinfurthi) Oil as Green Corrosion Inhibtor on Aluminium Sheet in Acidic Medium
Authors: Mohammed J. , Mohammed M. S. , Isah J.
Published: December 2022

This study evaluated the anticorrosion potential of African black olive oil obtained from its fruit (pulp) on Aluminium sheet in 2M H2SO4 using gravimetric method. The extraction was carried out using soxhlet extractor and the oil was characterised using Fourier Transform Infrared Spectrophotometer (FTIR). The results showed that the oil exhibits maximum inhibitive efficiency of 88.57%. The FTIR analysis showed the presence of C=C-H, Ar-H bending out of plane, C-H bending in plane, C-O, N-O asymmetric stretch, C=C stretch, C=N stretch, and O-H functional groups at various peaks (wave numbers).The adsorption of the African black olive oil onto the Aluminium surface during the inhibition process obeyed Langmuir adsorption isotherm. Hence, based on the outcome of this study, the African black olive oil possessed excellent anticorrosion property for the corrosion of aluminium in the acidic medium and can also be used as green corrosion inhibitor for other metals.
Nurses Involvement in the Management of Family Violence Victims in Primary Care Settings in Ondo State, Nigeria: A Qualitative Study
Authors: Ogunlade OB , Komolafe AO , Olowokere AE , Agunbiade OM , Irinoye OO
Published: December 2022

Background: Nurses in primary healthcare settings are strategic for appropriate responses to family violence victims in Nigeria. The study described nurses’ involvement in identifying and managing victims of family violence.

Methods: The interpretive descriptive qualitative approach was adopted for the study. Participants were purposively selected and in-depth interviews were conducted among 12 nurses working at primary health care settings with a developed interview guide. The interviews were analyzed via qualitative content analysis.

Results: Findings showed that nurses identified victims of physical violence via signs of physical injury. Nurses had difficulty identifying other forms of violence that may not have physical signs and not disclosed by victims. Nurses’ management strategies were wound care for physical injuries sustained, counselling and mediation. Risk assessment, safety planning measures were not instituted as well as effective management and specialized care services for victims.

Conclusion: This study showed there were gaps in identifying family violence cases and their management by nurses. Hence, the implication for further education and training of nurses, and advocacy for policy guidelines for effective management of family violence victims.
Perceived Workplace Stress Levels and Coping Strategies of Military Personnel in a Nigerian Barrack
Authors: Udeh OS , Aguwa EN , Onwasigwe CN
Published: December 2022

Background: Stress is a recognized cause of impaired job functioning and unproductivity in workplaces. The military environment is reported to be highly stressful. This study determined the levels of stress among Nigerian military personnel in 82 division Abakpa Cantonment, Enugu and also evaluated some stressors, as well as the coping strategies of these personnel.

Methods: This was a cross-sectional analytical study carried out between July and August 2020 among 261 Nigerian military personnel selected using a multistage sampling method. Data collection was done using a self-administered questionnaire (Perceived Stress Scale). Descriptive statistics were used for demographic variables while multiple linear regression was done to determine the influence of the independent variables (age, gender, marital status, etc.) on the dependent variable (stress). Level of significance was p < 0.05.

Results: Majority were males (80.5%) and married (78%). Mean age was 38±10 years and most (63.3%) had worked for < 20 years. About 51.0% and 1.9% had moderate and severe stress levels, respectively. The commonest perceived causes of stress included underremuneration (32.6%), undervalued (26.1%), heavy workload (18%) and harassment (18%). The commonest positive coping strategies include talking to friends and family (36.0%) and thinking of solution (23.0%) while negative coping styles were eating (9.2%) and alcohol use (6.9%).

Conclusion: More than half of the respondents had moderate level of stress. Government should ensure regular review of personnel salary structure. Also, commissioned officers should be trained in proper handling of non-commissioned officers in order to further reduce the level of stress.
Deep venous thromboses complicating central vascular access for renal replacement therapy in a tertiary health centre of a developing country
Authors: Bamikefa T.A. , Olayemi O.A. , Oyedepo D.S. , Yusuf A.O. , Hassan M.O. , Alebiosu C.O.
Published: December 2022

Background/objectives: Central venous cannulation remains an important process in haemodialysis practises world-wide. The study is designed to  determine the prevalence of central access deep venous thrombosis (DVT) and its associated risk factors in the studied population.

Methods: A prospective observational study of kidney disease patients who underwent haemodialysis between January 2021 and December 31st2021  was carried out. Socio-demographic and clinical data were extracted using structured pro-forma. Data was analyzed using SPSS version 20.

Results: Of the 98 patients that underwent haemodialysis, 36 (36.8%) were male and 62 (63.2%) were female. Mean age was 48.3±16.7 years. Fifteen  (15.3%) had acute kidney injury while 83 (85.0%) had chronic kidney disease. All the patients had emergency dialysis totaling508 sessions. Femoral vein  was the most frequently used vascular access (95%) while other vascular access accounted for the remaining (5%). Femoral DVT was seen in 8 (8.2%)  patients with majority having CKD (8.4%) .

Conclusion: Iliofemoral DVT was most common (P=0.537). Statistically significant association was observed between occurrence of femoral DVT and AKI  (P<0.02).
Family variables and its influence on malaria prevention practices among households in Ife east local government area, Osun state, Nigeria
Authors: Sonibare O.O. , Esimai O.A. , Olowookere S.A.
Published: December 2022

Background: An understanding of the family variables that influence malaria prevention practices (MPPs) is valuable in endemic communities with  implications for family health. The study aim was to determine the family variables influencing MPPs among households in Ife East Local Government  Area of Osun state.Methods: This was a descriptive cross-sectional survey that used a pre-tested interviewer-administered questionnaire. Chi-square test was used to  determine the relationship between family variables and MPPs. Binary logistic regression was used to identify family variables influencing MPPs.Results: Among 272 households, 52.6% had good MPPs. Family variables influencing good MPPs include monogamous family (OR = 2.02, 95% CI = 1.10 –  3.71, p = 0.023), less than 5 family size (OR = 2.42, 95% CI = 1.39 – 4.22, p = 0.002) and primary level of education (OR = 5.78, 95% CI = 2.01 – 16.61, p = 0.001).Conclusion: Among the households, use of MPPs was fair and it was significantly influenced by some family variables. These findings highlight the need  to take cognizance of family variables in the design of programs for malaria intervention.
Positive Solutions For a Schr\"odinger-Bopp-Podolsky system in $\mathbb R^{3}$
Authors: Mascaro Bruno , Siciliano Gaetano
Published: December 2022

We consider the following Schr\"odinger-Bopp-Podolsky system in $\mathbb
R^{3}$
$$\left\{ \begin{array}{c} -\varepsilon^{2} \Delta u + V(x)u + \phi u =
f(u)\\ -\varepsilon^{2} \Delta \phi + \varepsilon^{4} \Delta^{2}\phi =
4\pi\varepsilon u^{2}\\ \end{array} \right.$$
where $\varepsilon > 0$ with $ V:\mathbb{R}^{3} \rightarrow \mathbb{R},
f:\mathbb{R} \rightarrow \mathbb{R}$ satisfy suitable assumptions. By using
variational methods, we prove that the number of positive solutions is
estimated below by the Ljusternick-Schnirelmann category of $M$, the set of
minima of the potential $V$.
TÜRKİYE CUMHURİYETİNDE İŞ SAĞLIĞI VE GÜVENLİĞİ SİSTEMİNİN TEMEL DİNAMİKLERİ VE UYGULAMA ALANI
Authors: KARAAHMETOĞLU Atanur
Published: December 2022

İş sağlığı ve güvenliği temelde çalışan sağlığını esas alan bir kavramdır. İş sağlığı ve güvenliği bir taraftan çalışan sağlığını, diğer taraftan da iş güvenliğini amaçlamaktadır. Bu nedenle iş sağlığı ve güvenliğine dönük yapılan kanuni düzenlemeler büyük öneme sahiptir. Türkiye Cumhuriyeti'nde iş sağlığı ve güvenliği sistemi, 6331 sayılı İş Sağlığı ve Güvenliği Kanununa (İSGK) dayanmaktadır. İSGK'nin yürürlükte olmadığı dönemde iş sağlığı ve güvenliğini özel olarak düzenleyen herhangi bir kanun mevcut değil iken, İSGK'nin yürürlüğe girmesi ile ilk defa iş sağlığı ve güvenliği ayrıntılı şekilde düzenlenmiştir. İSGK kapsamında ayrıntılı düzenlemeler yapılmakla birlikte, birçok yeni müessese de getirilmiştir. Böylelikle iş sağlığı ve güvenliğinin eksiksiz sağlanması ve bir sistem oluşturulması amaçlanmıştır. Bu çalışmada Türkiye Cumhuriyeti'nde iş sağlığı ve güvenliğinin uygulama alanı ve temel dinamikleri incelenmiştir. Bu şekilde Türkiye Cumhuriyeti'nde iş sağlığı ve güvenliği sisteminin iş sağlığı ve güvenliğine yönelik ihtiyaçlara cevap verip vermediği sorusuna bir cevap aranmıştır.
KRİPTO PARA PİYASALARINA DAYALI STATİK VE DİNAMİK PORTFÖY OPTİMİZASYON ANALİZLERİ
Authors: BÜBERKÖKÜ Önder , KIZILDERE Celal
Published: December 2022

Bu çalışmada kripto para piyasalarına dayalı statik ve dinamik portföy optimizasyon analizlerine yer verilmiştir. Analizlerde şartlı riske maruz değer yöntemi, risk paritesi yöntemi, minimum varyans yöntemi, Shrape rasyosu yöntemi ile eşit ağırılıklandırma yöntemi kullanılmıştır. Portföy performanslarının ölçümünde Sortino rasyosu, Calmar rasyosu, Sharpe rasyosu ile değişim katsayılarından yararlanılmıştır. Optimal portföylerin finansal risk düzeylerinin ölçümünde ise tarihi simülasyon yöntemi, şartlı riske maruz değer yöntemi ile maksimum düşüş oranına yer verilmiştir. Hem statik hem de dinamik portföy optimizasyon analizine dayalı bulgular her durumda en iyi performansı sergileyen yöntemin eşit ağırlıklandırma yöntemi olduğu sonucuna işaret etmektedir. Bulgular ayrıca normal piyasa koşullarında eşit ağırlıklandırma yöntemi ile oluşturulan portföyün makul bir piyasa risk düzeyine sahip olduğunu, fakat kripto para piyasalarındaki volatilitenin oldukça artığı dönemlerde eşit ağırlıklandırma yöntemi ile oluşturulan portföyün en yüksek piyasa riskine sahip portföy olma riskinin de bulunduğunu göstermektedir.
Digitalization of Medical Records supported with the Analysis of Medical Scans using Deep Learning
Authors: Ashok A  , Aathithya M J  , Arun K S  , Anushree S
Published: December 2022

Nowadays, many patients find difficulty in maintaining their medical reports. So, if we have a website which records and manages the reports of patients it will be useful for them to access as well as it will be kept safe. For this, an attempt was made to design a website and store the database containing the reports of the patients. Furthermore, the website will contain a Deep Learning-based analyzer that analyzes certain medical scans uploaded. CNN algorithm was used to analyze medical images, since deep learning algorithms have taken over the processing of medical images. The medical scan reports of the patients provide the appropriate information about it with a high accuracy.
Diffusion Instability Region for Systems of Parabolic Equations
Authors: Ревина С.В.
Published: December 2022

Рассматривается система двух уравнений реакции-диффузии в ограниченной области $m$-мерного пространства с краевыми условиями Неймана на границе, для которой слагаемые реакции $f(u,v)$ и $g(u,v)$ зависят от двух параметров $a$ и $b$. Предполагается, что система имеет пространственно-однородное решение $(u_0,v_0)$, причем $f_u(u_0,v_0)>0$, а $-g_v(u_0,v_0)=F( \mathrm{Det (\mathrm{J})})$, где $\mathrm{J}$~--- матрица Якоби соответствующей линеаризованной системы в бездиффузионном приближении, $F$~--- гладкая монотонно возрастающая функция. Предложен способ аналитического описания области необходимых и достаточных условий неустойчивости Тьюринга на плоскости параметров системы при фиксированном коэффициенте диффузии $d$. Показано, что область необходимых условий неустойчивости Тьюринга на плоскости $( \mathrm{Det (\mathrm{J})}, f_u)$ ограничена кривой нулевого следа, дискриминантной кривой и геометрическим местом точек $ \mathrm{Det (\mathrm{J})}=0$. Найдены явные выражения кривых достаточных условий и доказано, что дискриминантная кривая является огибающей семейства этих кривых. Показано, что одна из границ области неустойчивости Тьюринга состоит из фрагментов кривых достаточных условий, выражается через функцию F и собственные значения оператора Лапласа в рассматриваемой области. Найдены точки пересечения кривых достаточных условий и показано, что их абсциссы не зависят от вида функции $F$ и выражаются через коэффициент диффузии и собственные значения оператора Лапласа. Рассмотрен частный случай $F( \mathrm{Det (\mathrm{J})})= \mathrm{Det (\mathrm{J})}$. Для этого случая указан диапазон волновых чисел, при которых возникает неустойчивость Тьюринга. Получено разбиение полуоси $d>1$ на полуинтервалы, каждому из которых соответствует свое минимальное критическое волновое число. Точки пересечения кривых достаточных условий лежат на прямых, не зависящих от коэффициента диффузии $d$. В качестве примеров приложений доказанных утверждений рассматриваются система Шнакенберга и уравнения брюсселятора.
On Extension of Positive Multilinear Operators
Authors: Гелиева А.А. , Кусраева З.А.
Published: December 2022

Используя линеаризацию положительных полилинейных операторов с помощью фремлиновского тензорного произведения векторных решеток можно показать, что полилинейный оператор, действующий из декартова произведения мажорирующих подпространств векторных решеток в порядково полную векторную решетку, допускает продолжение до полилинейного положительного оператора, определенного на декартовом произведении объемлющих векторных решеток. В~настоящей заметке устанавливается, что этот результата остается в силе, если полилинейный оператор определен на декартовом произведении мажорирующих подпространств сепарабельных банаховых решеток и принимает значения из топологичесой векторной решетки с $\sigma$-интерполяционным свойством при условии, что упомянутые банаховы решетки обладают свойством субаддитивности. Последнее обеспечивает тот факт, что алгебраическое тензорное произведение мажорирующих подпространст будет мажорирующим во фремлиновском тензорном произведении рассматриваемых банаховых решеток. Сформулирован открытый вопрос: остается ли в силе доказанный результат, если опустить (или ослабить) условие субаддитивности. Возможность ослабить требование порядковой полноты решетки образов за счет предъявления к области определения некоторых дополнительных требований впервые реализовали Абрамович и Викстед при доказательстве одного варианта теоремы Хана --- Банаха --- Канторовича.
On the Algebra Generated by Volterra Integral Operators with Homogeneous Kernels and Continuous Coefficients
Authors: Авсянкин О.Г. , Каменских Г.А.
Published: December 2022

В пространствах Лебега рассматриваются вольтерровские многомерные интегральные операторы с непрерывными коэффициентами. При этом предполагается, что ядро интегрального оператора однородно степени $(-n)$, инвариантно относительно группы вращений $SO(n)$ и удовлетворяет некоторому условию суммируемости, которое обеспечивает ограниченность оператора. Основным объектом исследования в работе является банахова алгебра $\mathfrak{A}$, порожденная всеми операторами указанного выше типа и тождественным оператором. Алгебра $\mathfrak{A}$ некоммутативна, и для ее исследования авторы переходят к фактор-алгебре $\mathfrak{A}/\mathfrak{T}$, где $\mathfrak{T}$~--- совокупность всех компактных операторов. Показано, что алгебра $\mathfrak{A}/\mathfrak{T}$ является коммутативной, что позволяет применить к ней общие методы исследования коммутативных банаховых алгебр. В частности, дано описание пространства максимальных идеалов алгебры $\mathfrak{A}/\mathfrak{T}$ и найден критерий обратимости элементов из этой алгебры. На основе этого для банаховой алгебры $\mathfrak{A}$ построено символическое исчисление, то есть каждому оператору из этой алгебры поставлена в соответствие некоторая непрерывная функция, названная символом оператора. В терминах символа получены необходимые и достаточные условия нетеровости оператора из алгебры $\mathfrak{A}$, а также формула для вычисления индекса.
Scale-Dependent Deformation Model of a Layered Rectangle
Authors: Ватульян А.О. , Нестеров С.А.
Published: December 2022

Рассмотрена задача деформирования слоистого прямоугольника, нижняя сторона которого жестко защемлена, на верхней стороне действует распределенная нормальная нагрузка, а~боковые стороны находятся в условиях скользящей заделки. Для учета масштабных эффектов применяется однопараметрическая градиентная теория упругости. Граничные условия на боковых гранях допускают применение метода разделения переменных. Перемещения и механическая нагрузка были разложены в ряды Фурье. Для нахождения гармоник перемещений имеем систему двух дифференциальных уравнений четвертого порядка. Решение системы дифференциальных уравнений основано на введении упругого потенциала перемещений. Неизвестные константы интегрирования находят путем удовлетворения граничных условий и условий сопряжения, записанных для гармоник перемещений. На конкретных примерах проведены вычисления горизонтального и вертикального распределения перемещений, моментных и полных напряжений слоистого прямоугольника. Показано отличие распределений перемещений и напряжений, найденных на основе решений задачи в классической постановке и в градиентной постановке. Выяснено, что полные напряжения испытывают небольшой скачок на линии сопряжения, обусловленный тем, что согласно градиентной теории упругости на линии сопряжения должны быть непрерывны не полные напряжения, а компоненты векторов нагрузки. Выявлено значительное влияние увеличения масштабного параметра на изменения значений перемещений, полных и моментных напряжений.
Total Poisson Boundedness and Total Oscillability of Solutions of Systems of Differential Equations
Authors: Лапин К.С.
Published: December 2022

В работах автора было начато изучение особого вида ограниченности решений систем дифференциальных уравнений, а именно, их ограниченности по Пуассону. Понятие ограниченности по Пуассону решения обобщает классическое понятие ограниченности решения и состоит в том, что в фазовом пространстве найдутся такой шар и на временн$\mbox{о}^{\!\!'}$й полуоси такая счетная система непересекающихся интервалов, последовательность правых концов которых стремится к плюс бесконечности, что решение при всех значениях времени из этих интервалов содержится в данном шаре. Далее в работах автора на основе методов функций Ляпунова, вектор-функций Ляпунова и высших производных функций Ляпунова были получены достаточные условия различных видов ограниченности по Пуассону всех решений. В частности, были получены достаточные условия тотальной ограниченности (ограниченности при малых возмущениях) по Пуассону, частичной тотальной ограниченности по Пуассону, а также частичной тотальной ограниченности по Пуассону решений с частично контролируемыми начальными условиями. В настоящей работе автором была получена асимптотическая или, как еще говорят, финальная характеризация понятия ограниченности по Пуассону решения, которая позволила установить связь между понятием ограниченного по Пуассону решения и понятием осциллирующего решения. Далее в работе введены понятия тотальной осциллируемости решений, частичной тотальной осциллируемости решений и частичной тотальной осциллируемости решений с частично контролируемыми начальными условиями. На основе указанной выше финальной характеризации понятия ограниченности по Пуассону решения, а также на основе метода вектор-функций Ляпунова с системами сравнений в работе получены достаточные условия тотальной осциллируемости, частичной тотальной осциллируемости, а также частичной тотальной осциллируемости решений с частично контролируемыми начальными условиями. Как следствия получены достаточные условия указанных выше видов тотальной осциллируемости решений в терминах функций Ляпунова.
О модульных неравенствах типа Полецкого для некоторых классов отображений
Authors: Vodopyanov S.K.
Published: December 2022

It is well-known that the theory of mappings with bounded distortion was laid by Yu.\,G.~Reshetnyak in 60-th of the last century [1]. In papers~[2, 3], there was introduced the two-index scale of mappings with weighted bounded $(q, p)$-distortion. This scale of mappings includes, in particular, mappings with bounded distortion mentioned above (under $q=p=n$ and the trivial weight function). In~paper~[4], for the two-index scale of mappings with weighted bounded $(q, p)$-distortion, the Poletsky-type modulus inequality was proved under minimal regularity; many examples of mappings were given to which the results of~[4] can be applied. In this paper we show how to apply results of~[4] to one such class. Another goal of this paper is to exhibit a new class of mappings in which Poletsky-type modulus inequalities is valid. To this end, for $n=2$, we extend the validity of the assertions in~[4] to the limiting exponents of summability: $1<q\leq p\leq \infty$. This generalization contains, as a special case, the results of recently published papers. As a consequence of our results, we also obtain estimates for the change in capacitу of condensers.
The Psychological Effects of Parental Guidance in Edward Bond’s The Children (2000)
Authors: KOCAÇINAR Ayşegül , GUVEN Samet
Published: December 2022

The world has witnessed various economic, social, and political problems throughout history. People could not overcome the psychological disorders that stemmed from war. Individuals growing up under these conditions surely need parental guidance to find the correct path in puberty. Correspondingly, Freud emphasises the importance of parental protection and supervision. Psychosexual developmental stages, which are part of “Psychoanalysis”, have served as a guide for parents to raise well-behaved children. In this respect, Edward Bond cleverly deals with the social problems in his plays. He touches upon the theme of violence and victimised children by exposing social issues to present solutions to the existing order for the sake of constructing a mentally healthy generation. Bond additionally believes that literary figures should shed light on the violence that people are exposed to in their early ages. For this purpose, he evidently challenges the problems that the society preferred to keep their ears deaf and eyes blind in The Children (2000). In other words, the purpose of this study is to show how Edward Bond successfully reveals the psychological problems of the younger generation by focusing on their main underlying reasons under the light of Freud’s “Psychosexual Development Theory” in The Children.
Book Review: Cora Hoexter & Glenn Penfold Administrative Law in South Africa 3 ed (2021)
Authors: Wallis Malcolm
Published: December 2022

None
Developing The Quality of Traditional Islamic Boarding School Using The Total Quality Management Model
Authors: Jajuli Jajuli , Wahidin Khaerul , Fahrudin Adi
Published: December 2022

This study aims to reveal data related to efforts to develop the quality of traditional Islamic boarding schools (pesantren) using the TQM method at the Kebon Jambu Ciwaringin Islamic Boarding School, Cirebon Regency. This study uses qualitative research methods to obtain data through observation, interviews, and documentation. The results of the research study show that by applying the TQM model the quality of education at the Kebon Jambu Islamic boarding school is well maintained with evidence of inputs being carried out through effective and efficient processes and outputs produced through these good educational processes. This boarding school can produce graduates who are proficient in religious knowledge and skills in other fields. Besides that, the legality of education has been recognized by both the Muslim community and the government. Second, in implementing the TQM model to improve the quality of education, the Kebon Jambu Islamic Boarding School makes several programs that are structured and implemented by all stakeholders of the boarding school effectively and efficiently. This achievement was supported by Ustadz competence, adequate infrastructure, and good financing management.
Strategi Pengajaran Matematik dalam Bahasa Inggeris sebagai Bahasa Kedua: Sebuah Kajian Literatur Sistematik
Authors: Musa Miranda , Mahmud Muhammad Sofwan
Published: December 2022

Strategi pengajaran Matematik dalam bahasa Inggeris sebagai bahasa kedua merupakan isu yang sering mendapat tempat dalam dunia pendidikan hasil daripada peningkatan pelajar yang mempelajari matematik dalam bahasa Inggeris. Guru memainkan peranan yang penting dalam menyokong pembelajaran murid yang mempelajari matematik dalam bahasa yang bukan bahasa pertama mereka. Kajian literatur secara sistematik mengenai strategi pengajaran guru dalam kelas dwibahasa masih berkurangan. Oleh itu, kajian Ini telah menjalankan tinjauan literatur yang sistematik tentang strategi-strategi pengajaran Matematik dalam bahasa Inggeris sebagai bahasa kedua. Kajian ini telah menggunakan dua pangkalan data iaitu Scopus dan Web of Science untuk pemilihan artikel. Item Pelaporan Pilihan untuk Ulasan Sistematik dan Meta-Analisis (PRISMA) telah digunakan sebagai garis panduan untuk memastikan kajian ini dijalankan secara sistematik. Sebanyak 22 artikel yang berkaitan dengan strategi pengajaran Matematik dalam Bahasa Inggeris sebagai bahasa kedua telah dipilih dalam kajian ini. Berdasarkan dapatan kajian, terdapat pelbagai strategi pengajaran Matematik dalam bahasa Inggeris sebagai bahasa kedua. Strategi pengajaran yang menjadi kebiasaan dalam pengajaran guru ialah penukaran kod, terjemahan bahasa dan penggunaan alat bantu mengajar. Terdapat juga strategi pengajaran lainnya iaitu kaedah pengajaran perbendaharaan kata, pengubahsuaian tugas yang bersesuaian dengan budaya murid dan pelaksanaan tugasan secara berkumpulan.
Control de calidad RCP
Authors: Yerovi Santos Rocio
Published: December 2022

Monitores que miden el rendimiento durante la RCP y datos que se utilizan para la retroalimentación posterior. La mayoría puede medir la frecuencia, la profundidad y el retorno de la pared torácica. Otros parámetros que se miden y observan en retrospectiva del evento son pausas previas, durante y posterior a la descarga. Aún no se puede medir volumen corriente, presión en la vía aérea, frecuencia respiratoria.
Registro en RCP pediátrica
Authors: Yock-Corrales Adriana , Díaz Soto Edgard
Published: December 2022

El paro cardíaco en niños es un evento raro; sin embargo, aunque los resultados de la reanimación cardiopulmonar han mejorado significativamente en los últimos años la morbimortalidad sigue siendo elevada. A pesar del reconocimiento de la importancia de este evento, no existe un impulso generalizado para que se realicen estudios clínicos, revisiones y registros de reanimación cardiopulmonar (RCP). Si bien se pueden justificar los ensayos controlados aleatorios para algunas intervenciones, no son apropiados para muchos aspectos de la reanimación pediátrica.
REFLECTING ON TWITTER: A PROTOTYPE FOR HYPERMODERN SOCIETY
Authors: KÖSEOĞLU Talha
Published: December 2022

Social scientists have been discussing the advent of an “information society”, as information technologies have started to dominate social life since at least the 1970s. The most important infrastructural element of this information society is the internet which enables dissemination of information in a very efficient and effective way, independent from the physical proximity between two networked computers. The internet is non-hierarchical (horizontal) in the sense that it does not have an ultimate power center which determines the structure of the networks and the contents that flow within and between networks. The formation of the networks and the content of information disseminated through them are shaped by the users. Hence, the interplay between internet and individuals is bidirectional; individuals structure the networks and the structure of networks, in turn, shapes the perception of individuals regarding self, community, and time. This paper analyzes how and why people use Twitter—both a social networking site and a micro-blogger; to what extent Twitter use reflect the constituting principles of contemporary society such as conception of time and how it may affect our notion of community and social relations. It argues that Twitter represents a replica of hypermodern society with the apprehension of time streaming embedded in its use, clustering of users around personal and professional communities and centers and the strategies that users develop in order to deal with the complexity of online hypermodernity. Twitter, and social network sites in general, are structured by the values and conceptions of the contemporary society and we need to consider them within a greater zeitgeist. The main function of these services is to reinforce and enhance the conceptions and experience of hypermodernity and to increase the rate of social change further.
Diabetes mellitus and the impact on triglycerides
Authors: Grigore Ionica , Gurău Gabriela , Gurău Tudor Vladimir , Tutunaru Dana , Țocu George , Țovîrnac Andreea Nicoleta , Neagu Andrei , Goroftei Larisa , Ciobotaru Octavian Cătălin , Ciobotaru Oana Roxana
Published: December 2022

Atherosclerosis at the diabetic patient is based on lipoproteins in the form of small and dense particles with an increased capacity for subendothelial penetration and the production of atheroma plaque.
We conducted a retrospective study on a number of 217 patients with diabetes mellitus, with an average age of 61.53 years, being analyzed the importance of age, sex, type of diabetes, body mass index on triglyceride values.
Although no significant correlations were found between body mass index and triglyceride value, to improve glycemic control and lipid profile in obese patients with diabetes, weight loss is recommended
No statistical correlation was found between the value of the body mass index and glycated hemoglobin, respectively the value of triglycerides, there  was observed a correlation, even if it was weak, between the value of glycated hemoglobin and triglycerides, underlining the importance of a permanent glycemic control in the prevention of atherosclerosis.
A Review of Jaw Morphology and Foraging Behaviour in the Bulldog Ant (Myrmecia Gulosa) Group
Authors: Ulrich Jacob , Hart Mel
Published: December 2022

Formicidae are one of the most diverse groups that, along with termites, make up one third of the total animal biomass on Earth.  Contributing to their success is the large variety of foraging behaviours and morphologies ants have evolved in response to various food supplies.  On the world continent Gondwana, Myrmeciinae, were the dominant group with many characters considered primitive or ancestral within Formicidae. The Myrmecia gulosa group retains ancestral traits of the Myrmeciinae, now found only in Australia.  This research aims to a review the facial morphologies and foraging behaviours of the M. gulosa group to better understand their unique success in Australia, compared to their demise elsewhere.  Evaluation of jaw morphology, foraging behaviour, and geographical distribution revealed a narrow range of morphologies and consistent foraging behaviour across 41 of 42 studied species all over Australia.  Based on similar morphologies of 41 species and behaviours of eleven, eight of which were considered well researched, it is possible that understudied M. gulosa species will demonstrate traits similar to well-researched species.  It appears that M. gulosa species maintained ancestral traits that failed to allow the present-day success of Myrmeciinae elsewhere, and likely allowed the diversification of other ant genera.  The following collated results suggests, members of the M. gulosa species group appear not to face the same food resource selective pressures that led to diversification in other ant genera and further supports food resources as an important selective pressure for other ant genera that M. gulosa possibly failed to adapt to.