bluuebunny/crossref_metadata_2025 huggingface dataset:
Post-myocardial infarction left ventricular septal dissecting aneurysm: a case report
Authors: Kamikawa Yuji , Ohashi Takeki , Tadakoshi Masao , Kojima Akinori , Yamauchi Hirotaka , Hioki Kaoru , Hishikawa Takanori , Kageyama Souichirou
Published: February 2021

Background

Post-infarction perforation of the ventricular septum is recognized as a major complication of post-myocardial infarction. However, post-infarction ventricle dissection is seldom reported, as the ventricular shunt often accompanying this condition is a significant cause of cardiogenic shock. We encountered a rare case of ventricular dissection unaccompanied by a shunt, which caused a state of shock.

Case presentation

A 67-year-old man was diagnosed with acute myocardial infarction with a left ventricular oozing rupture. The occlusion of the left anterior descending artery was aspirated, followed by drainage of the pericardial bleeding and hemostasis of the left ventricle. After 15 h, he presented with sudden cardiogenic shock requiring extra-corporeal membrane oxygenation. The transesophageal echocardiogram showed a left ventricular septal aneurysm. Five days later, he underwent an operation, in which a ventricular septal wall dissection with a tear-forming large pseudoaneurysm was found. The tear was closed with a patch. He was weaned off extra-corporeal membrane oxygenation the next day. Αfter 4 months, he was discharged in a stable condition.

Conclusions

Recognizing and identifying the cause of cardiogenic shock after myocardial infarction is crucial to provide the best treatment and surgical approach. Ventricular septal dissection should be considered, in addition to the usual complications, such as possible papillary muscle rupture, cardiac rupture, and perforation of the interventricular septum.
Rotation of bits: a classical and quantum perspective
Authors: Nimbe Peter , Weyori Benjamin Asubam , Adekoya Adebayo Felix
Published: February 2021

Bit rotation is an operation similar to shift except that the bits that fall off at one end are put back to the other end. In left rotation, the bits that fall off at left end are put back at right end. In right rotation, the bits that fall off at the right end are put back at the left end. Applications of bit rotation include; registers, cryptography, computing with a single bit string circularly shifted to the right or left based on some position but no work has been done with respect to shifting the bits one position at a time generating emergent bit strings equal to the number of bits-1 from the incident bit string, and then recombining or extracting bit(s) from each of the bit strings or words to form back the incident bit string. In this article, the authors present a new approach of rotating classical bit strings known as CRotate. A quantum approach to bit rotation known as QRotate is presented as well. The quantum perspective uses the concept of bit swapping by avenue of the quantum swap gate in jsqubits. Models and algorithms are duly presented.
Characteristics of chest high resolution computed tomography images of COVID-19: A retrospective study of 46 patients
Authors: Lu Yibo , Zhou Jingru , Mo Yimei , Song Shulin , Wei Xue , Ding Ke
Published: February 2021

Objective: To analyze the characteristics of chest high resolution computed tomography (CT) images of coronavirus disease 2019 (COVID-19).

Methods: This is a retrospective study analyzing the clinical records and chest high-resolution CT images of 46 consecutive patients who were diagnosed with COVID-19 by nucleic acid tests and treated at our hospitals between January 2020 and February 2020.

Results: Abnormalities in the CT images were found in 44 patients (95.6%). The lesions were unilateral in eight patients (17.4%), bilateral in 36 patients (78.3%), single in seven patients (15.9%), and multiple in 37 patients (84.1%). The morphology of the lesions was scattered opacity in 10 patients (21.7%), patchy opacity in 38 patients (82.6%), fibrotic cord in 17 patients (37.0%), and wedge-shaped opacity in two patients (4.3%). The lesions can be classified as ground-glass opacity in eight patients (17.4%), consolidation in one patient (2.2%), and ground-glass opacity plus consolidation in 28 patients (60.9%).

Conclusion: Most COVID-19 patients showed abnormalities in chest CT images and the most common findings were ground-glass opacity plus consolidation.

Abbreviations:COVID-19: coronavirus disease 2019, CT: computed tomography,SARS-CoV-2: severe acute respiratory syndrome coronavirus 2, RNA: ribonucleic acid.

doi: https://doi.org/10.12669/pjms.37.3.3504

How to cite this:Lu Y, Zhou J, Mo Y, Song S, Wei X, Ding K. Characteristics of Chest high resolution computed tomography images of COVID-19: A retrospective study of 46 patients. Pak J Med Sci. 2021;37(3):840-845. doi: https://doi.org/10.12669/pjms.37.3.3504

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Association analysis of 374T/A (rs1800624) receptor for advanced glycation end-products (RAGE) gene polymorphism with diabetic retinopathy in Pakistani patients
Authors: Qayyum Shazia , Afzal Muhammad , Naveed Abdul Khaliq
Published: February 2021

Objectives: to determine the relationship of 374T/A (rs1800624) polymorphism in the gene encoding RAGE with Type-2 diabetes mellitus (T2DM), diabetic retinopathy (DR) and serum soluble RAGE (sRAGE) level in Pakistani patients.

Methods: A case-control study, conducted from January 2017 to December 2018, involving 150 healthy controls (HC), 150 T2DM patients with no retinopathy (DNR) and 150 DR patients diagnosed by coloured fundus photography. Tetra-primer amplification refractory mutation system – polymerase chain reaction (T-ARMS-PCR) was used for genotyping. Serum sRAGE levels were measured by enzyme-linked immunosorbent assays (ELIZA).

Results: The frequency of TT, TA and AA genotypes of rs1800624 polymorphism were: 92.7%, 6%, 1.3% in HC, 80%, 17.3%, 2.7% in DNR and 76.7%, 19.3%, 4.3% in DR groups. Heterozygous TA genotype and mutant A allele showed significant association with diabetes and DR vs HC. In dominant model, mutant allele showed significant association with DNR and DR vs HC. No significant association of rs1800624 was detected with DR and its sub-groups, non-proliferative DR (NPDR) and proliferative DR (PDR) vs DNR. Dividing NPDR into mild, moderate and severe, heterozygous TA genotype showed significant association with moderate and severe NPDR vs DNR. In DNR and DR groups, TA genotype was significantly associated with raised sRAGE.

Conclusion: rs1800624 RAGE gene polymorphism might be a risk factor for T2DM and NPDR in Pakistani patients. Raised sRAGE levels have a positive correlation with PDR and are associated with heterozygosity of rs1800624 polymorphism in DNR and DR groups.

doi: https://doi.org/10.12669/pjms.37.3.3670

How to cite this:Qayyum S, Afzal M, Naveed AK. Association analysis of 374T/A (rs1800624) receptor for advanced glycation end-products (RAGE) gene polymorphism with diabetic retinopathy in Pakistani patients. Pak J Med Sci. 2021;37(3):733-739.  doi: https://doi.org/10.12669/pjms.37.3.3670

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Highlighting the latest research: February 2021
Authors: Palmer Sarah Jane
Published: February 2021

Sarah Jane Palmer presents a selection of recently published articles of interest to nurses working in cardiovascular nursing. The aim of this roundup is to provide a brief overview of the research papers selected. A full reference is provided for those who wish to look at the research in further detail.
Implementation and evaluation of a palliative and end-of-life care peer-learning initiative
Authors: Buono Michelle
Published: February 2021

Background:

Palliative and end-of-life care skills for nurses in acute care are dependent on the level of training received. Hospices are seen as fountains of knowledge in end-of-life and complex care issues.

Aim:

This study evaluated peer learning between registered nurses (RNs) at West Suffolk Foundation Trust and St Nicholas Hospice Care. Six acute and six hospice nurses spent 1 week each, over a 6-month period, shadowing in the opposite of their usual acute or hospice setting.

Method:

The study used an action research approach. Reflective diaries, questionnaires and evaluation forms provided feedback, giving nursing practice perspectives on learning gained during the shadowing process.

Findings:

Key features were improved knowledge in medications for symptom management in end of life; understanding holistic assessments to enhance patient care; key competencies completed.

Conclusion:

This study led to the development of the West Suffolk Foundation Trust 2-day shadowing model offering access to end-of-life care learning.
How can we protect cancer nurses from exposure to hazardous drugs?
Authors: Clark Christine
Published: February 2021

Freelance medical writer Christine Clark ( chris@salt.u-net.com ) reports on an online meeting held in November 2020 on protecting nursing working in oncology from exposure to hazardous drugs
Cancer-related fatigue: an overview
Authors: Al Maqbali Mohammed
Published: February 2021

A diagnosis of cancer is a major life stressor that can affect the physiological, psychological and physical state of the person concerned. Fatigue is a particularly common and troubling symptom that has a negative impact on quality of life throughout all phases of treatment and stages of the illness. The aim of this review is to provide background information on cancer-related fatigue. This review discusses cancer-related fatigue (CRF) in terms of the definition, prevalence, risk factors, aetiology, and the measurement scales used. The differences between definitions of symptoms and relevant theories will be explored and discussed to help explain the variety of instruments used in its measurement. The prevalence of fatigue will be assessed by looking critically at the evidence of fatigue and the factors that affect it. Potential treatment and management strategies for CRF will also be discussed. Finally, there will be an overview of the instruments used to measure fatigue. This review also provides important evidence for measuring and managing CRF that can help nurses to understand fatigue among patients with cancer. Assessing CRF should be routinely undertaken in clinical settings to help identify the proper interventions, treatments and management to reduce fatigue among cancer patients.
The interplay between atrial fibrillation and acute myocardial infarction
Authors: El-Shetry Mohamed , Mahfouz Ragab , Frere Abdel-Fattah , Abdeldayem Mohamed
Published: February 2021

Atrial fibrillation is the most frequently occurring supraventricular arrhythmia in patients presenting with acute myocardial infarction. It is associated with worse outcomes when it coexists with acute myocardial infarction and results in increased morbidity and mortality. Both conditions are closely related to each other and share similar pathophysiological pathways. The management of atrial fibrillation in patients with acute myocardial infarction is challenging since triple antithrombotic therapy is indicated, but this results in a markedly increased risk of bleeding events and mortality. This review addresses the interactions between both conditions including common risk factors, possible mechanisms through which acute myocardial infarction contributes to development of atrial fibrillation and vice versa, and the problem of using anticoagulation in the management of these patients.
Achilles tendon rupture: what you need to know
Authors: Biggs A , Scott G , Solan MC , Williamson M
Published: February 2021

Heel pain and a history of a ‘pop’ or feeling ‘something go’ are the buzz phrases classically associated with Achilles tendon rupture. However, the diagnosis is often missed in clinical practice because of the assumption that this is a sporting injury suffered only by the young or middle-aged. In a sedentary older patient, the injury may be dismissed as an ankle sprain. If swelling is present but no injury is recalled then deep vein thrombosis is suspected, but Achilles rupture is not. The diagnosis of Achilles tendon rupture is clinical, based on history and examination. Radiological imaging (ultrasound scan) is useful to plan orthopaedic management and exclude concomitant deep vein thrombosis. In most cases, non-operative management with the ankle held plantar flexed in a boot is the current best practice.
Optical flow sensor based on the thermal time-of-flight measurement
Authors: Hribar Jernej , Donlagic Denis
Published: February 2021

This paper presents a dielectric, all-optical thermal time-of-flight fluid flow velocity sensor. The proposed sensor utilizes a sequence of three short sections of optical fibers, which are positioned in a direction perpendicular to the measured fluid flow. One of these three fiber sections is highly doped with vanadium and acts as an optically controlled heater, while the other two fiber sections contain fiber Bragg gratings (FBG) that act as dynamic temperature sensors. The vanadium-doped fiber is heated periodically by a laser source, while observing temperature variations within the fluid flow downstream by the two fiber sections with inscribed Bragg gratings. The time delay in temperature variations recorded at both FBG sensors correlates directly with the flow rate of the fluid. When the sensor was placed within the glass capillary with inner diameter of 650 µm, it enabled a flow rate measurement range between 1 ml/h and 1200 ml/h. The sensor thus provides a broad flow-rate dynamic range and is insensitive to changes in losses in the lead optical fibers or optical heating source power fluctuations. Furthermore, the thermal properties of the measured liquid, for example, the liquid’s thermal conductivity and heat capacity, have mostly limited effects on the measurement results, which allows for thermal-principle-based flow velocity measurements in cases of liquids with variable or poorly defined compositions.
Signal processing assisted Vernier effect in a single interferometer for sensitivity magnification
Authors: Fang Xiaohui , Zhang Wu , Li Jiewen , Lin Chunli , Chen Zhennan , Zhang Meng , Huang Shihong , Lu Dunke , Wan Minggui , Qiu Xiaozhong
Published: February 2021

The Vernier effect magnifies optical sensitivity by the superposition of two spectra with slightly shifted frequencies from a sensing interferometer (SIM) and a reference interferometer (RIM). In this study, we demonstrate that the Vernier effect can be obtained through a single interferometer, which detects the changed signal and provides an artificial reference spectrum (ARS) to be superposed with the changed signal spectrum. The ARS extracted by spatial frequency down-conversion of one sensing spectrum in the signal processing is not affected by environmental changes and can be detuned at an arbitrarily small amount with the measured signal spectrum. This approach is simpler and accurate and provides ultrahigh sensitivity. To validate the principle, a Mach–Zehnder (MZ) interferometer based on a dual-mode microfiber was designed for sensing the refractive index (RI) change magnification, and a high sensitivity of 71354.58 nm/refractive index unit (RIU) was obtained with good linearity.
A study of the aphrodisiac properties of Cordyceps militaris in streptozotocin-induced diabetic male rats
Authors: Nguyen Toan Van , Chumnanpuen Pramote , Parunyakul Kongphop , Srisuksai Krittika , Fungfuang Wirasak
Published: February 2021

Background and Aim: Cordyceps militaris (CM) is a fungus that has been used to enhance aphrodisiac activity in men, but to date, no studies have focused on its antidiabetic properties. This study aimed to investigate the effects of CM on reproductive performance of streptozotocin (STZ)-induced diabetic male rats.

Materials and Methods: Six-week-old Wistar rats were randomly divided into four groups: control Group 1 consisting of healthy rats; Group 2, healthy rats treated with CM (100 mg/kg); Group 3, diabetic untreated rats; and Group 4, diabetic rats treated with CM (100 mg/kg). Rats were orally administered with vehicle or CM for 21 days. The body weight, blood glucose level, food intake, epididymal sperm parameter, sexual behavior, serum testosterone level, and antioxidant parameters were determined.

Results: The results indicated that CM treatment in STZ-induced diabetic rats significantly improved the epididymal sperm parameter and serum testosterone level and, in turn, their copulatory behavior. CM treatment in diabetic rats significantly ameliorated malondialdehyde level and significantly improved the glutathione and catalase levels.

Conclusion: These results provide new information on the pharmacological properties of CM in ameliorating testicular damage due to oxidative stress and improving sexual performance in diabetic male rats.
Neuroendocrine Tumor of the Common Bile Duct Associated With von Hippel-Lindau Disease
Authors: Romero-Velez Gustavo , Pereira Xavier , Yang Julie , Panarelli Nicole C. , McAuliffe John C.
Published: February 2021

We report a case of a common bile duct neuroendocrine tumor discovered in a patient with von Hippel-Lindau disease to emphasize the importance of recognizing this unusual diagnosis. This case illustrates the importance of endoscopic evaluation and the potential diagnostic pitfalls which may impact its appropriate management: the anatomic proximity of more common von Hippel-Lindau disease–related tumors, pathologic evaluation, and staging. Therefore, awareness of this rare diagnosis is important for appropriate treatment.
Multifocal Nodular Fatty Infiltration of the Liver: A Rare Benign Disorder That Mimics Metastatic Liver Disease
Authors: Dreifuss Nicolas H. , Ramallo Dario , McCormack Lucas
Published: February 2021

Fatty liver disease is a frequent diagnosis. Rarely, it adopts a multifocal nodular pattern mimicking multiple liver metastases. Multifocal nodular fatty infiltration of the liver entails a challenging problem that must be included as a differential diagnosis when dealing with healthy patients with an incidental finding of multiple liver lesions, even in the absence of obesity or metabolic syndrome. A complete clinical examination and high-quality imaging, including magnetic resonance imaging, might help to confirm diagnosis and to avoid unnecessary liver biopsies.
Insulinoma: A Recurrent Pancreatic Tumor Amendable to Computed Tomography–Guided Ethanol-Lipiodol Injection
Authors: Zaver Himesh B. , Alnahhal Khaled I. , Ghoz Hassan , Paz-Fumagalli Ricardo , Raimondo Massimo , Lukens Frank J.
Published: February 2021

Insulinomas are rare, with an annual incidence of 1–4 people per mission. Insulinomas are the most common functioning endocrine neoplams of the pancreas. Endoscopic ultrasound has both diagnostic and therapeutic yield in undifferentiated pancreatic tumors. We present a case of a recurrent insulinoma, refractory to surgical and medical management diagnosed with endoscopic ultrasound. Our case uniquely conveys a successful, alternative approach to addressing symptomatic insulinomas refractory to surgical or medical management through computed tomography–guided percutaneous ethanol-lipiodol injection.
Lymph Node Tumor Burden Correlates With Tumor Budding and Poorly Differentiated Clusters: A New Prognostic Factor in Colorectal Carcinoma?
Authors: Archilla Ivan , Díaz-Mercedes Sherley , Aguirre José Javier , Tarragona Jordi , Machado Isidro , Rodrigo Maria Teresa , Lopez-Prades Sandra , Gorostiaga Iñigo , Landolfi Stefania , Alén Begoña Otero , Balaguer Francesc , Castells Antoni , Camps Jordi , Cuatrecasas Miriam
Published: February 2021

INTRODUCTION:

Molecular lymph node (LN) staging in early colorectal cancer (CRC) has demonstrated to be more precise than conventional histopathology pN staging. Tumor budding (TB) and poorly differentiated clusters (PDCs) are associated with LN metastases, recurrences, and lower survival in CRC. We evaluated the correlation between the total tumor load (TTL) in LNs from CRC surgical specimens with patient outcome, TB, and PDC.

METHODS:

In this retrospective multicentre study, 5,931 LNs from 342 stage I–III CRC were analyzed by both hematoxylin and eosin and molecular detection of tumor cytokeratin 19 mRNA by one-step nucleic acid amplification. TB and PDC were evaluated by hematoxylin and eosin and cytokeratin 19 immunohistochemistry.

Results:

One-step nucleic acid was positive in 38.3% patients (n = 131). Tumor Budding was low in 45% cases, intermediate in 25%, and high in 30%. Poorly Differentiated Clusters were low-grade G1 in 53%, G2 in 32%, and G3 in 15%. TB and PDC correlated with TTL, high-grade, lymphovascular and perineural invasion, pT, pN and stage (P < 0.001). TB, PDC, and TTL ≥ 6,000 copies/µL were associated with worse overall survival (P = 0.002, P = 0.013, and P = 0.046) and disease-free survival (P < 0.001).

Discussion:

The implementation of more sensitive molecular methods to assess LN status is a promising alternative approach to pN staging, which could be integrated to other factors to help risk stratification and management of patients with early-stage CRC. This study demonstrates the correlation of the amount of LN tumor burden with TB and PDCs. TTL is related to the outcome and could be used as a new prognostic factor in CRC (see Visual Abstract, Supplementary Digital Content 2, http://links.lww.com/CTG/A512).
Pain Severity Correlates With Biopsy-Mediated Colonic Afferent Activation But Not Psychological Scores in Patients With IBS-D
Authors: Cibert-Goton Vincent , Lam Ching , Lingaya Melanie , Falcone Yirga , Wood John N. , Bulmer David C. , Spiller Robin
Published: February 2021

INTRODUCTION:

Despite heterogeneity, an increased prevalence of psychological comorbidity and an altered pronociceptive gut microenvironment have repeatedly emerged as causative pathophysiology in patients with irritable bowel syndrome (IBS). Our aim was to study these phenomena by comparing gut-related symptoms, psychological scores, and biopsy samples generated from a detailed diarrhea-predominant IBS patient (IBS-D) cohort before their entry into a previously reported clinical trial.

METHODS:

Data were generated from 42 patients with IBS-D who completed a daily 2-week bowel symptom diary, the Hospital Anxiety and Depression score, and the Patient Health Questionnaire-12 Somatic Symptom score and underwent unprepared flexible sigmoidoscopy. Sigmoid mucosal biopsies were separately evaluated using immunohistochemistry and culture supernatants to determine cellularity, mediator levels, and ability to stimulate colonic afferent activity.

RESULTS:

Pain severity scores significantly correlated with the daily duration of pain (r = 0.67, P < 0.00001), urgency (r = 0.57, P < 0.0005), and bloating (r = 0.39, P < 0.05), but not with psychological symptom scores for anxiety, depression, or somatization. Furthermore, pain severity scores from individual patients with IBS-D were significantly correlated (r = 0.40, P < 0.008) with stimulation of colonic afferent activation mediated by their biopsy supernatant, but not with biopsy cell counts nor measured mediator levels.

DISCUSSION:

Peripheral pronociceptive changes in the bowel seem more important than psychological factors in determining pain severity within a tightly phenotyped cohort of patients with IBS-D. No individual mediator was identified as the cause of this pronociceptive change, suggesting that nerve targeting therapeutic approaches may be more successful than mediator-driven approaches for the treatment of pain in IBS-D.
NUMERICAL SIMULATION OF LID-DRIVEN CAVITY FLOW BY ISOGEOMETRIC ANALYSIS
Authors: Bastl Bohumír , Brandner Marek , Egermaier Jiří , Horníková Hana , Michálková Kristýna , Turnerová Eva
Published: February 2021

In this paper, we present numerical results obtained by an in-house incompressible fluid flow solver based on isogeometric analysis (IgA) for the standard benchmark problem for incompressible fluid flow simulation – lid-driven cavity flow. The steady Navier-Stokes equations are solved in their velocity-pressure formulation and we consider only inf-sup stable pairs of B-spline discretization spaces. The main aim of the paper is to compare the results from our IgA-based flow solver with the results obtained by a standard package based on finite element method with respect to degrees of freedom and stability of the solution. Further, the effectiveness of the recently introduced rIgA method for the steady Navier-Stokes equations is studied.The authors dedicate the paper to Professor K. Kozel on the occasion of his 80th birthday.
Déjouer l’invisibilisation des discriminations
Authors: Carini-Belloni Benoît , Vuattoux Arthur
Published: February 2021

Ce jour-là, devant des milliers de téléspectateurs, après des témoignages concernant les enfants atteints du VIH, après des chansons destinées à montrer l’unité du monde artis- tique contre l’épidémie de VIH/Sida en France, la voix d’une association représentant les minorités sexuelles s’invite dans le récit trop lisse de la maladie et de son traitement politique. Le militant d’Act Up-Paris rappelle alors que le Sida, ce ne sont pas seulement des enfants, des Français qu’il faudrait aider, mais aussi des étrangers malades expul- sés, des prisonniers maltraités, des usagers de drogues, des travailleuses et travailleurs du sexe... L’épisode a fait l’objet de débats, y compris au sein du monde associatif : fal- lait-il dire les choses aussi clairement face à des spectateurs peu informés, au risque de perdre des donateurs par absence d’empathie envers les minorités ? Fallait-il au contraire « jouer le jeu » du spectacle, et se contenter de n’évoquer que des exemples de malades nationaux, hétérosexuels, en visibilisant davantage les enfants malades que les usagers de drogues ou les prisonniers ? Quelle que soit la position adoptée concernant un tel épisode, un constat s’impose : des minorités (hommes homosexuels, travailleurs et travailleuses du sexe et femmes hétérosexuelles étrangères notamment) étaient encore discriminées face à la maladie, par leur orientation sexuelle ou leur situation administrative, quinze ans après le début de l’épidémie. Aujourd’hui encore, les mêmes minorités demeurent toujours discriminées, comme le montre Charlotte Pézeril dans son article, qui fait écho à d’autres travaux récents
Monitoring and diagnostics of special-purpose turbomachines
Authors: Małgorzata Gizelska
Published: February 2021

In the operation of special-purpose turbomachines,
diagnostic tools are necessary. They enable control
of the machine technical state and its operation parameters
in the on-line mode. The acquisition and processing of
the measurement data in real time is crucial as they are indicators
of the machine functioning under various operating
conditions. The paper presents two types of computer
designed diagnostic tools to monitor in real time the dynamic
and thermodynamic parameters of special-purpose
turbomachines. The first one monitors the dynamics of the
rotating system with an active magnetic bearing, the second
- monitors the instant value of polytropic efficiency of
the compression process, which was designed for the industrial
machine.
On Convergence Subsystems of Orthonormal Systems
Authors: Bareladze G.
Published: February 2021

It is proved that for any sequence of real numbers satisfying Rk
≥ k (k ≥ 1) and Rk
= o(k log2
k), k → ∞, there exists a orthonormal system , x ∈ (0; 1), such that none of its subsystems with nk ≤ Rk
(k ≥ 1) is a convergence subsystem.
Regular Fréchet–Lie Groups of Invertible Elements in Some Inverse Limits of Unital Involutive Banach Algebras
Authors: Marion Jean , Robart Thierry
Published: February 2021

We consider a wide class of unital involutive topological algebras provided with a C*-norm and which are inverse limits of sequences of unital involutive Banach algebras; these algebras are taking a prominent position in noncommutative differential geometry, where they are often called unital smooth algebras. In this paper we prove that the group of invertible elements of such a unital solution smooth algebra and the subgroup of its unitary elements are regular analytic Fréchet–Lie groups of Campbell–Baker–Hausdorff type and fulfill a nice infinite-dimensional version of Lie's second fundamental theorem.
Properties of Certain Integral Operators
Authors: Owa Shigeyoshi
Published: February 2021

Two integral operators Pα
and for analytic functions in the open unit disk are introduced. The object of the present paper is to derive some properties of integral operators Pα
and .
Computing Gauss–Manin Systems for Complete Intersection Singularities Sμ
Authors: Aleksandrov A. G. , Tanabé S.
Published: February 2021

The Gauss–Manin systems with coefficients having logarithmic poles along the discriminant sets of the principal deformations of complete intersection quasihomogeneous singularities Sμ
are calculated. Their solutions in the form of generalized hypergeometric functions are presented.
Absolute Summability Factors and Absolute Tauberian Theorems for Double Series and Sequences
Authors: Yanetz (Chachanashvili) Sh.
Published: February 2021

Let 𝐴 and 𝐵 be the linear methods of the summability of double series with fields of bounded summability and , respectively. Let 𝑇 be certain set of double series. The condition 𝑥 ∈ 𝑇 is called 𝐵𝑏-Tauberian for 𝐴 if .

Some theorems about summability factors enable one to find new 𝐵𝑏-Tauberian conditions for 𝐴 from the already known 𝐵𝑏-Tauberian conditions for 𝐴.
A Fixed Point Theorem of Leggett–Williams Type with Applications to Single- and Multivalued Equations
Authors: Agarwal Ravi P. , O'regan Donal
Published: February 2021

We establish a general fixed point theorem for multivalued maps defined on cones in Banach spaces. Applications to single and multivalued equations are presented.
Convergence to Zero and Boundedness of Operator-Normed Sums of Random Vectors with Application to Autoregression Processes
Authors: Buldygin V. V. , Koval V. A.
Published: February 2021

The problems of almost sure convergence to zero and almost sure boundedness of operator-normed sums of different sequences of random vectors are studied. The sequences of independent random vectors, orthogonal random vectors and the sequences of vector-valued martingale-differences are considered. General results are applied to the problem of asymptotic behaviour of multidimensional autoregression processes.
Towards an Innovation Theory of Spatial Brownian Motion under Boundary Conditions
Authors: Khmaladze E.
Published: February 2021

Set-parametric Brownian motion b in a star-shaped set G is considered when the values of b on the boundary of G are given. Under the conditional distribution given these boundary values the process b becomes some set-parametrics Gaussian process and not Brownian motion. We define the transformation of this Gaussian process into another Brownian motion which can be considered as “martingale part” of the conditional Brownian motion b and the transformation itself can be considered as Doob–Meyer decomposition of b. Some other boundary conditions and, in particular, the case of conditional Brownian motion on the unit square given its values on the whole of its boundary are considered.
Linear Dynamical Systems: An Axiomatic Approach
Authors: Lomadze V.
Published: February 2021

Linear dynamical systems are introduced in a general axiomatic way, and their development is carried out in great simplicity. The approach is closely related both with the classical transfer function approach and with the Willems behavioral approach.
Sample Behavior and Laws of Large Numbers for Gaussian Random Elements
Authors: Ergemlidze Z. , Shangua A. , Tarieladze V.
Published: February 2021

Criteria for almost sure boundedness and convergence to zero almost surely of Banach space valued independent Gaussian random elements are found. The obtained statements can be viewed as vector-valued versions of the corresponding results due to N. Vakhania. Moreover, from the obtained statements a strong law of large numbers is derived in the form of Yu. V. Prokhorov.
Generalized Bernoulli Polynomials Revisited and Some Other Appell Sequences
Authors: Maroni Pascal , Mejri Manoubi
Published: February 2021

We study the problem posed by Nörlund in terms of dual sequences. We determine the functional equation fulfilled by the canonical form of any generalized Bernoulli sequence. Surprisingly these canonical forms are positive definite. Some results are given for an Euler sequence.
Computing Characteristic Sets of Ordinary Radical Differential Ideals
Authors: Sadik Brahim
Published: February 2021

We give upper bounds for the order of the elements in a characteristic set of a regular differential ideal or a radical of a finitely generated differential ideal with respect to some specific orderings. We then show how to compute characteristic sets of these ideals using algebraic methods.
On the Measurability of Additive Functionals
Authors: Kharazishvili Alexander
Published: February 2021

For an infinite-dimensional separable Hilbert space 𝐻, the problem of measurability of additive functionals 𝑓 : 𝐻 → 𝐑 with respect to various extensions of σ-finite diffused Borel measures on 𝐻 is discussed. It is shown that there exists an everywhere discontinuous additive functional 𝑓 on 𝐻 such that, for any σ-finite diffused Borel measure μ on 𝐻, this 𝑓 can be made measurable with respect to an appropriate extension of μ. Special consideration is given to the case where μ is invariant or quasiinvariant under a subgroup of 𝐻.
Analytic Function Theory in Algebras
Authors: Krasnov Yakov
Published: February 2021

We study the widest possible generalizations of the complex analytic function theory agreeing with the Riemann and Weierstrass approaches.
Generating Relations of Hermite–Tricomi Functions Using a Representation of Lie Algebra 𝑇3
Authors: Dattoli Giuseppe , Khan Subuhi , Yasmin Ghazala
Published: February 2021

Motivated by recent studies of the properties of new classes of polynomials constructed in terms of quasi-monomials, certain generating relations involving Hermite–Tricomi functions are obtained. To accomplish this we use the representation 𝑄(𝑤, 𝑚0) of the 3-dimensional Lie algebra 𝑇3. Some special cases are also discussed.
Restriction Theorems for Anisotropically Homogeneous Hypersurfaces of
Authors: Ferreyra Elida , Urciuolo Marta
Published: February 2021

For and β
1, . . . , β
𝑛 > 1 let be defined by , let 𝐵 be the open unit ball in and let ∑ = {(𝑥, φ (𝑥)) : 𝑥 ∈ 𝐵}. For let 𝑅𝑓 : ∑ → ℂ be defined by

where denotes the usual Fourier transform of 𝑓. Let σ be the Borel measure on ∑ defined by σ (𝐴) = ∫𝐵
χ
𝐴 (𝑥, φ (𝑥)) 𝑑𝑥 and 𝐸 be the type set for the operator 𝑅, i.e. the set of pairs for which there exists 𝑐 > 0 such that for all . In this paper we obtain a polygonal domain contained in 𝐸. We also give necessary conditions for a pair . In some cases this result is sharp up to endpoints.
Uniqueness of Entire or Meromorphic Functions Concerning Differential Polynomials
Authors: Chen Jun-Fan , Lin Wei-Chuan , Zhang Xiao-Yu
Published: February 2021

We study the uniqueness problems on entire or meromorphic functions concerning differential polynomials that share one slowly growing meromorphic function. Furthermore, we greatly improve and generalize some former results obtained by Fang and Hong, Lin and Yi, Xiong and Lin.
On Functional Equations Connected with Quadrature Rules
Authors: Koclęga-Kulpa Barbara , Szostok Tomasz , Wąsowicz Szymon
Published: February 2021

The functional equations of the form

are considered. They are connected with quadrature rules of the approximate integration. We show that such equations characterize polynomials in the class of continuous functions. It is also shown that if the number of components is sufficiently small, then the continuity is forced by the equation itself. Unique solvability of the considered problem are established.
In vitro CAPITULUM INDUCTION ON SHOOT CULTURES OF Helianthus SPECIES / INDUCCION IN VITRO DE LA CABEZA DEL CULTIVO DE VASTAGO EN LA ESPECIE DEL GENERO Helianthus / INDUCTION DU CAPITULE IN VITRO À PARTIR DE CULTURES DE POUSSES DE LA FAMILLE Helianthus
Authors: Sujatha M. , Prabakaran A.J.
Published: February 2021

Premature flowering of shoots is a serious problem in tissue cultures of cultivated sunflower. The ability of cultivated and wild sunflowers and some interspecific hybrids to flower in vitro was compared by maintaining shoot cultures on Murashige and Skoog (MS) medium supplemented with 0.2 to 1.0 mg/ 1 of kinetin or benzyladenine (BA). Studies with 18 accessions comprising diploid annuals, diploid perennials, tetraploids, hexaploids and few interspecific hybrids revealed that capitulum induction in vitro is confined to diploid annuals with determinate apex and interspecific hybrids involving the diploid species.
STUDY ON AN Ambrosia ISOLATE OF Plasmopara halstedii / ESTUDIO DE UN AISLADO DEL HONGO Plasmopara halstedii EN LA ESPECIE Ambrosia / ÉTUDE D’UN ISOLAT DU CHAMPIGNON Plasmopara halstedii SUR L’ESPÈCE Ambrosia
Authors: Walcz Ilona , Bogár Katalin , Virányi Ferenc
Published: February 2021

In 1998, a number of Ambrosia artemisifolia individuals located in the vicinity of a sunflower breeding nursery at Bicsérd, south Hungary, showed disease symptoms resembling downy mildew and/or white rust. Sporangia of both Plasmopara and Albugo have been isolated from the affected plants. Microscopical observations and subsequent inoculation experiments revealed the existence of Plasmopara halstedii on the affected A.artemisifolia plants. Following inoculations on a set of sunflower differentials, the Ambrosia isolates of P.halstedii consistently showed a virulence formula of 730 that is equal to pathotype 4.
Laboratory Study on Oxide Inclusions in High-Strength Low-Alloyed Steel Refined by Slag with Basicity 2–5
Authors: Yu Huixiang , Wang Xinhua , Zhang Jing , Wang Wanjun
Published: February 2021

Non-metallic inclusions in high-strength low-alloyed steel refined by slag with basicity (B) 2–5 and Al2O3 content 20%–30% (in mass percent) were investigated by slag–metal equilibrium experiments in laboratory and thermodynamic calculations. Most inclusions in equilibrium were quasi-spherical CaO-MgO-Al2O3-SiO2 system and the sizes were less than 5 µm. The average content ratio, CaO/Al2O3 and CaO/SiO2 of the inclusions, increased with slag basicity increasing when Al2O3 content in slag was around 25%, MgO/Al2O3 and CaO/Al2O3 increased with Al2O3 content in slag decreasing when slag basicity was around 3.3. The MgO/Al2O3 of the inclusions was influenced mainly by Al2O3 content in slag and CaO/Al2O3 was influenced mainly by slag basicity. To make the inclusions out of relative lower melting region (<1,773 K), the values of CaO/Al2O3, MgO/Al2O3 and (CaO+MgO)/Al2O3 of the inclusions should be enhanced by increasing basicity and decreasing Al2O3 content in slag properly.
The influence of multi-pass friction stir processing on microstructure and sliding wear behavior of Cu/ZrO2 surface composite
Authors: Rabiezadeh Amin , Ghafaei Saman
Published: February 2021

In this study, copper/ZrO2 surface composites were produced using nano-particles via friction stir processing in order to enhance surface tribological properties. The present research aimed to generate copper matrix composites and analyze the effect of processing parameters on the evolving microstructure, microhardness, and wear-resistance behavior. It is worth noting that the processed composite layer had more homogeneity in the four-pass process. In comparison to the base metal and non-powder samples, it had higher mechanical characteristics. Based on the results, the highest recorded hardness, approximately 288 HV, was found in a four-pass state with powder. Remarkably, it showed a double peak compared to 80 HV in the base metal. The lowest friction coefficient of four-passes with the powder sample was about 0.47, which showed a significant efficiency in comparison to the friction coefficient of base metal that was about 0.81.
Mechanical bonding in cold roll-cladding of tri-layered brass/steel/brass composite
Authors: Vaseghi Majid , Zand Hossein , Sameezadeh Mahmood
Published: February 2021

In this paper, brass/steel/brass clad-composite was fabricated using a cold roll-bonding process. Composite sheets were roll-bonded at reduction ratios between 37 and 72% at room temperature from strips of 150 mm in length and 30 mm wide, in one pass without lubrication. The threshold deformation for successful bonding was at a thickness reduction of 48% and peel strengths of the bonds were measured to be approximately 12 N cm-1, and it was found to escalate with an increase in the rolling reduction. The optimum reduction in thickness was ~66% wherein the peel strength was ~33 N cm-1. Various techniques such as optical and electron microscopy were implemented to analyze and investigate the effects of the reduction in thickness and the joining mechanism. The results showed that an increased reduction in thickness in rolling leads to an increase in the joining strength. Furthermore, increasing the brass plate thickness negatively affects the joining strength. A Cu peak on the peeled-off steel surface and the presence of Fe on the peeled-off brass surface strongly suggest that the major bonding between brass and steel was mechanically induced metallurgical bonding.
Analysis of Thermoviscoplastic Effects on Dynamic Necking of Pure Copper Bars during Impact Tension
Authors: Ma Dongfang , Chen Danian , Shanxing Wu , Wang Huanran , Hou Yanjun , Cai Canyuan , Deng Gaotao
Published: February 2021

In order to make effective measure for the stress, strain and strain rate in the specimen, a tensile split Hopkinson bar (TSHB) was optimized in the first loading duration and the thermoviscoplastic models for a pure copper were determined. The deformation of the pure copper bar during the multi-tensile loading including the necking process in the optimized TSHB testing was recorded by a high speed camera and was used in providing an extensional check of the determined thermoviscoplastic models of the pure copper. The thermoviscoplastic models determined in a certain range of strain were employed in numerically simulating the large deformation of the pure copper bar to adjust the thermoviscoplastic model to describing large strain range. The instability strain of thermoviscoplastic materials in simple tension given by Batra et al was compared with the experimental strain at diffuse necking of the pure copper bar and the computed instability strain based on the load-average strain of the pure copper bar. The local necking of the pure copper bar in the optimized TSHB testing was numerically simulated using the micro-mechanical data given by Ragab and was compared with the recorded necking.
Church, State and Secularism in Asia: The Public Nature of the Church in Timor-Leste
Authors: Hodge Joel
Published: February 2021

The Western discourse and norms around secularism, particularly Church-state relations, are foreign in many ways to the majority world, especially Asia. However, as the modern nation-state has taken root in Asia, different models of secularism have developed with interesting relationships to the particular cultural and religious context of each country. In the difficult course of forming a secular nation-state, Asian nations have had to address the dominant religious traditions and institutions of each nation, including Christian churches. This process has occasionally provoked conflict and has presented a particular dilemma to Christian churches in how to respond and relate to the developing nation-state. In order for theology to adequately address this situation (particular the context of modern secular discourses) and conceptualise the public shape and role of the church, a practical examination of the church’s relationship to and formation of culture and politics is required. To explore this process, this essay examines the case of Timor-Leste (or East Timor) and its relationship with the Roman Catholic Church, particularly in regards to the state-building process that has occurred after independence. The Church’s influence, which grew rapidly during the Indonesian occupation (1975–1999), has been contested since independence by some in the political sphere, such as in the 2005 dispute with the Government. By examining the 2005 dispute, the essay analyses the nature of the Catholic Church’s influence on Timorese cultural and political identity and her relationship with the new Timorese nation-state. The essay identifies the different models of secularism operative in Timor as they have relevance to the Asian context more generally.
Religion – Alter – Demenz
Authors: Charbonnier Lars , Roy Lena-Katharina
Published: February 2021

The demographic future offers intensive challenges for society as present in Germany not only with regard to the social or economic system, but also with regard to religion and the Christian church’s practice in its different fields. This research report presents the current state of research on religion and aging as far as it is relevant for practical-theological reflection, mostly limited to German-speaking context. The perspective of gerontology is considered as well as research from sociology and psychology of religion or reflections on the fields of church practice like pastoral care and counselling or education/life-long-learning. A special focus is set on the specific challenges arising for theological reflection as well as church-practice from the phenomena of dementia.
The Descendants of the Sîn-lēqi-unnīnī during the Late Achaemenid and Early Hellenistic Periods – A Family of Priests, Scribes and Scholars and Their Archival and Learned Texts
Authors: Hackl Johannes , Oelsner Joachim
Published: February 2021

It is by now well established that authors and copyists of scholarly works also drafted legal documents, if only occasionally. This article examines newly available prosopographical information concerning the scribal activities of the Sîn-lēqi-unnīnī during the mid to late fourth century BCE. It offers new datings of learned texts that have been known to academic circles for a long time and argues that the extant archival texts from Early Hellenistic Uruk mainly belonged to the archives of the Aḫûtu and Ekur-zakir families. In addition, it presents cases of transference of linguistic items peculiar to one or the other genre, giving rise to some general remarks on cross-genre imprints.