bluuebunny/crossref_metadata_2025 huggingface dataset:
Determinan Kejadian Stunting pada Balita
Authors: Wardita Yulia , Suprayitno Emdat , Kurniyati Eka Meiri
Published: October 2021

Determinant of stunting incident in Saronggi Subdistrict, Sumenep Regency. The prevalence of stunting of toddlers in East Java is higher than the average prevalence at the national level of 32.8%. In 2020, the Health Office of East Java Province mentioned that the prevalence of stunting in SumenepRegency reached 170 toddlers spread across 14 villages. The highest prevalence of stunting was found in NongGunongSubdistrict which reached 6.02% and in SaronggiSubdistrict which reached 4.05%.This study aims to analyze the influence of maternal pregnancy history, nutritional status of children, parenting patterns, maternal knowledge and history of exclusive breastfeeding to stunting.This research is analytical research with case-control design. The samples used were 30 mothers with toddler cases and 30 mothers with control toddlers.Maternal pregnancy history, child nutrition status, parenting patterns, maternal knowledge and exclusive breastfeeding have a significant influence on stunting incidents in Saronggi Subdistrict, Sumenep Regency.Mothers must meet the intake of good nutrition, provide exclusive breastfeeding and good parenting patterns and health officials must improve health education programs, especially about stunting so that maternal knowledge can be improved and stunting problems can be addressed immediately.
Anemia berhubungan dengan Perdarahan Post Partum
Authors: Yasin Zakiyah , Hannan Mujib , Wahyuni Erlyn
Published: October 2021

Pregnant women who experience anemia and untreated until the end of pregnancy will have an effect at the time of delivery, so that it can cause post partum hemorrhage which results in death in the mother. This study aims to analyze the relationship between anemia and the incidence of post partum hemorrhage in Puskesmas Lenteng, Lenteng District, Sumenep Regency.

The study design was analytic with a retrospective approach, the total population was 35 mothers, the total sample was 29 mothers, the sampling technique used random sampling. The independent variable is anemia, the dependent variable is the incidence of post partum hemorrhage. Collecting data using a checklist, data analysis using the chi square statistical test, the value of a = 0.05.

The results showed that of the 29 women who gave birth, most of them experienced anemia (HB level <11 g%) during pregnancy, as many as 19 mothers gave birth (65.5%), and of the 29 mothers gave birth, most of them experienced post partum hemorrhage as much as 17 mothers gave birth (59%).

The result of statistical tests using chi square with a value of a = 0.05, the resulting value (ρ) = 0.000, so that the value (ρ) <a (0.000 <0.05), which means that H0 is rejected and H1 is accepted, i.e. the relationship between anemia and the incidence of post partum hemorrhage at the Lenteng Public Health Center, Lenteng District, Sumenep Regency in 2020

In order to reduce the incidence of post partum hemorrhage, it is hoped that the mother in labor can prevent anemia during pregnancy, namely by consuming foods that contain lots of protein such as meat, liver, eggs, vegetables, folic acid (Vitamin C) and consumption of Fe tablets regularly and how to drink properly and according to conditions / needs.
Stunting dan Faktor Ibu
Authors: Aulia Aulia , Puspitasari Dian Ika , Huzaimah Nailiy , Wardita Yulia , Sandi Aldi Prawira
Published: October 2021

Stunting and Maternal Factors. Stunting is still one of the unresolved priority issues. Maternal factors greatly influence the incidence of stunting in children. This study explains the relationship between stunting and maternal factors, namely education, knowledge of nutrition, parenting patterns, and mother's motivation. This qualitative research is a type of correlational analytic research with the cross-sectional method. The subjects of this study were stunting mothers and toddlers at Dungkek Health Center (n=40), obtained using simple random sampling. Data collection using questionnaires and met lines. Data were analyzed using a contingency correlation test. The results showed a relationship between stunting in children with education, nutritional knowledge, and self-efficacy (p= 0.001; p= 0.033; p= 0.01). Edit was not related to parenting (p = 0.866). Health workers need to pay attention to maternal factors as the target of promotive and preventive activities in stunting cases because maternal factors make an important contribution in the first 1000 days of life, preventing stunting.
A formação continuada segundo os (as) professores (as) do ensino médio no norte do Tocantins: forma, finalidade e conteúdo
Authors: Locatelli Cleomar , Queiroz Hélida
Published: October 2021

O presente artigo trata da formação continuada para os (as) professores (as) da educação básica. O objetivo é analisar as concepções e as possíveis indicações para o desenvolvimento profissional permanente a partir da na manifestação dos (as) professores (as) do ensino médio. O estudo coletou informações junto ao quadro docente da rede estadual de ensino do norte do Tocantins, aplicando 110 questionários. As respostas revelam que para a maioria dos participantes da pesquisa a formação continuada deve complementar o processo formativo, sendo um aperfeiçoamento ou aprimoramento profissional. Deve também ser realizada no médio prazo e em espaço escolar. Os principais interesses de estudos são os temas específicos das áreas de conhecimento e aqueles relativos às especificidades do trabalho docente.
On the role of foreign experts in the development of Soviet industry during 1929–1933 (on the example of Stalingrad industry)
Authors: Lozin Dmitrii Ivanovich , Bolotova Elena Yur'evna
Published: October 2021

The goal of this research is to reveal the role of foreign experts in the period of industrialization of the Soviet economy (1929–1933) on the example of the development of Stalingrad industry. Using the data from the State Archive of Volgograd Region and scientific literature, the author discloses the factors of engaging foreign experts in Stalingrad enterprises, forms of their employment, size, and qualitative characteristics. The subject of this research is the foreign experts involved in the industrial enterprises in Stalingrad. The article is based on the systemic approach, which views foreign experts as part of the labor resources of Stalingrad industrial enterprises; as well as on structural-functional analysis, which reveals the vectors and scope of activity of the foreign employees. The novelty of this research consists in introduction of new archival data into the scientific discourse, as well as in comprehensive analysis of the reminiscences of some foreign specialists about the specificity of their work. The following conclusions were made: the reason for inviting foreign expert to the USSR during the Industrialization period was substantiated by shortage of competent personnel and engineering-technical workers, who would have been capable to accomplish the tasks of building the new type of enterprise; hundreds of foreign specialists were brought to the factories of Stalingrad via legal or illegal methods’; over the period from 1930 to 1933, the number of foreign experts has gradually decreased due to increase in the number of the local qualified personnel; despite this fact, foreign employees and their experience in engineering, construction oversight, introduction of new methods of production to the Soviet workers became the starting point for the rapid development of Stalingrad industry.
Within and Against Racial Segregation
Authors: Peano Irene
Published: October 2021

The pandemic brought migrant farm workers into the limelight once again, as has happened repeatedly in the last three decades, in Italy as in many other parts of the world. Here I examine how intersecting and sometimes conflicting discourses and interventions, that have this biopolitically conceived population as their object, decide upon these subjects’ worthiness of attention, care, and sympathy through criminalizing, victimizing, and humanitarian registers. I reflect on some of the affective dynamics that sustain both the governmental operations through which these populations were (sought to be) managed and reactions against them from a situated perspective, as an accomplice to many of the forms of struggle in which migrant farm workers have engaged in the last decade in Italy. The stage for many such occurrences is what I have elsewhere defined as the “encampment archipelago” that many such workers, and particularly those who migrate from across West Africa, inhabit—labor or asylum-seeker camps, but also slums or isolated, derelict buildings, and various hybrid, in-between spaces among which people circulate.
Bewilderment, Hope, and Despair
Authors: Mouritzen Lasse , McGowan Madeleine Kate , Samson Kristine
Published: October 2021

This essay is a collective investigation of affective experience, bewilderment, and imagery during the COVID-19 situation in Copenhagen, Denmark through multivocal writing and filmmaking. By letting go of the promises of normality, both in thinking and creating, the writers explore various personal, academic, and aesthetic states of affect—hope, despair, desire, and frustration, like temporary landscapes or glimpses of a new world. Feeding on boredom and fear of being isolated, left inactive and frustrated, naive, or hopeful, this essay points into a different and shivering set of changes, personal and societal, that we are currently facing, and illustrates how such changes, full of pain or despair, might also open new becomings of desire and hope.
Cycles of Quotidian Pandemic Instances
Authors: Lanz Paulina
Published: October 2021

By silencing the knowledge of our past, it will not disappear; it transforms into a hum. The hum, as a fluid object of silence can be mournful, can represent absence. The hum that we are neglecting connects with our feelings, registering as cyclic vibrations in contact with parts of the body. The vibrato of the hum speaks of unspoken relations that, according to Tina Campt, unifies quietness with sound, surrounded by affect within a register of meaningfulness. If we don’t dare to remember, some images will enunciate—and speak to—the affective register. With the sonic integration of Radio Influenza, artist Jordan Baseman’s computerized voices narrate stories from 1918 through newspaper fragments. The audible tracks add another register to the vibrations, complicating Paul Gilroy’s “politics of transfiguration,” where the “lower frequency” is purposefully over(p)layed mainly with a different set of forgotten histories suppressed from the war narrative. Hence, the sound is felt from an audible and visual register, enacted at the level of the quotidian narratives of twentieth-century photographs and newspaper stories. If we listen to these quiet photos, to these muffled stories, can we acknowledge that just as sonic vibrations, pandemics tend to come in waves as well? In the end, the 1918 spring influenza outbreak was followed by three waves: the fall of 1918, spring of 1919, and winter of 1919. These waves of history, sound, and pandemics, can push us to resist the neglectfulness and acknowledge what we have unlearned from the cycles of quotidian instances, time and time again.
The Green Color of Grief
Authors: Stanković Snežana , Paganelli Linda
Published: October 2021

This essay tries to read the pandemic-afflicted (human) world in terms of post-human translation. In echoing Anna Tsing’s call for “collaborative survival,” it speaks in images of human-spiders in the forest who sense the radical isolation of humans and, thus, loss of proximity. One witnesses ill-treatment of various bodies: those that are economized, racialized, or nationalized. In this way, the essay proposes a post-human approach to distorted intimacies worldwide. It uses multimodal means of reflection: film, photography, sounds, and words. Through such a combination of nonverbal and verbal elements, the essay argues against the divisions of humans-culture-nature. It asks the reader to rethink how we could exist in equal mutuality.
Plants, Vegetables, Lawn
Authors: Carabelli Giulia
Published: October 2021

This essay presents photos and words illustrating practices of care in homes shared by humans and plants during the COVID-19 pandemic. Drawing on interviews with plant carers, I highlight how humans (re)discovered plants as kin during forced social isolation. I reflect on how plants provided joy, hope, and reassurance during crisis, enabling strong affective bonds with their human carers. I read the creation/cementing of affective bonds between humans and plants for its political significance, and I interrogate the activity of making home/kin with plants as the emergence of interspecies solidarities, which challenge anthropocentric narratives of worldmaking and reinsert non-human beings as central to the making of more just and inclusive futures.
Finding Joy and Elegy
Authors: Karioris Frank
Published: October 2021

Amidst the despair, desperation, death, and economic deprivation of the pandemic, poetry—and creative outlets more broadly—have arisen to assist us in both making sense of the world at large, as well as addressing our own struggles during and from these challenges. This essay seeks to put these works into conversation as part of a process—along with quarantine—of seeding, an opportunity to grow new roots and networks. Drawing from a field of established literary journals and ones established during and explicitly to address the pandemic, the essay aims to begin a process of distilling the ways that even amongst fear and loss we must (and will) find ways to find joy. This requires us to seek out new forms of elegy that elaborate and understand the importance of relations and joys between peoples, and the new relational possibilities that our life holds for us as we move towards a post-pandemic world.
Introduction—Corona A(e)ffects
Authors: Fumanti Mattia , Zambelli Elena
Published: October 2021

Right from the emergence of the ongoing COVID-19 pandemic, national governments and international institutions have been relentlessly qualifying it as an “unprecedented” event. We have been told that the virus sees no color or class and that equal sacrifices from each one of us are and continue to be necessary to contain its spread. We have been instructed to look at the virus in scientific, neutral terms as if we had equal chances of being affected by it—as if its routes, that is, did not follow the roots of sedimented histories of oppression, exploitation, dispossession, and structural violence. This forum departs from such narratives to look at how the current COVID-19 pandemic intersects with other pre-existing and enduring pandemics, such as those produced by racism, capitalism, and speciesism. In building on the emerging critiques by Indigenous, feminist, Black, and queer academics, movements, and activists, the contributions it hosts offer multimedia reflections on affects triggered or evoked by the current pandemic, such as rage, fear, despair, restraint, care, and hope. Coming from different parts of the globe and disciplinary approaches, authors convey the “Corona(virus) a(e)ffects” in multisensorial ways, combining written essays, poetry, videos, and photographs. By contextualizing the ongoing COVID-19 pandemic within a historical legacy of structural violence within and across species, this forum moves beyond deceitfully single-focus and temporally flat narrations. In so doing, it provides a space for the expression of radical affectivities of dissent and hope that its outburst has arguably made only more visible and pressing.
Public Space as Infrastructure of Care
Authors: Kallianos Yannis , Karathanasis Pafsanias
Published: October 2021

Our contribution puts forward an examination of public spaces as infrastructures of care. The eruption of the COVID-19 pandemic, and the “social distancing” measures imposed by several governments around the world, transformed the very use and conceptualization of urban public spaces. In Athens, Greece, public space, which had already been in different ways at the forefront of multifarious crises since 2010, reemerged, once again, as a critical site of sociopolitical antagonism. Public spaces, such as squares, became central places where people could come together to share knowledge and emotions, collectively alleviate anxieties, and thus (re)negotiate their positionality in the city. Such formations and enactments of social connection, affectivity, and antagonism, reflect the entanglement between everyday life and the political, and also draw attention to the association of public space with practices of care for collective well-being during precarious times. During the ever-increasing securitization and policing of urban spaces in Athens, in which everyday life has come to be ever more permeated by precarity and uncertainty, public spaces have been reenacted as safe and more inclusive environments where people can be and act together. Our contribution also employs a video to render more intelligible the affective interconnectedness of sounds, images, bodies, materialities, and practices in public space. By attending to the affective dynamics of a public square in central Athens, we examine the entanglements between the sociopolitical production of public space and forms of care during the COVID-19 pandemic.
On Witnessing a Riot
Authors: Brooks Andrew , Richardson Michael
Published: October 2021

In the midst of the COVID-19 pandemic, the murder of George Floyd by Minneapolis police has sparked protests and riots around the world. The policing of the pandemic reveals the racial biases inherent to law enforcement and state-led discipline, laying bare ongoing infrastructural inequalities that render racialized subjects more vulnerable to premature death at the hands of police and public health systems alike. With the video embedded in the article, we guide readers through thirty-nine seconds of rioting in Los Angeles on May 31, 2020, shot on a mobile phone and circulated virally on Twitter. The affected body of the witness indexes both the intensity of the event and the embodied experience of the witness, establishing a relation between the two. The experiential aesthetics of the video exceeds the content and this affectivity circulates with its mediation and movement through networked platforms. Such forms of affective witnessing allow for an attunement to political struggle that occurs through what Hortense Spillers would call the analytic of the flesh. Thinking at the intersection of Black studies, affect theory, and media studies, we argue that the flesh is an affective register crucial to the building of global anti-racist solidarities towards abolition.
Feelings, Fascism, and Futures
Authors: Enzerink Suzanne
Published: October 2021

The COVID-19 pandemic has exposed some of the most glaring inequalities within nations and across the globe. While the disruption caused by the pandemic has given rise to hopes for a cultural reset to address these structures of inequality—captured compellingly by Arundhati Roy in her vision of the pandemic as a portal—the sediments of inequality have proven hard to erode. In this contribution, I explore this regressive impulse by honing in on the affect of restraint. While restraint is not ordinarily characterized as such, in the pandemic it has been a defining feature of our lives. However, it was not afforded equally. I begin by showing how restraint has become racialized, serving as a political tool to suppress protests, notably Black Lives Matter. I then move to show how globally, too, there has been an imbalance in who is—and what countries are—expected to practice nonintervention, linking both domestic and international uses of restraint to these preexisting structures of inequality. I end by proffering a vision for how, despite all these obstacles, the pandemic has also offered ways to bypass the state and form new social formations.
Evaluation of comedogenic potential of a paraben-free plant-based butter moisturizing cream: A double-blind, comparative study
Authors: Gala Monil Yogesh Neena , Muchhala Snehal Sameer , Charugulla Sujeet Narayan , Rathod Rahul , Mane Amey , Pandit Sucheta , Samal Alok Ranjan , Choudhury Anup Avijit
Published: October 2021

Objectives:

Comedogenicity is a critical factor in making of cosmetics and skin care products. The term “acne cosmetica” was coined to link the relationship between female acne to the use of cosmetic formulations, stating that the ingredients used in the cosmetic formulations have the potential to evoke a comedogenic response or produce comedones. Therefore, it is important that a skin care product is non-comedogenic and efficacious at the same time. The main objective of this study is to evaluate the comedogenic potential of the test product (Venusia Max Cream – paraben free) when applied topically under occluded patch to the skin.

Material and Methods:

This was a randomized, double-blinded, comparative study conducted in 24 healthy female participants, with prominent follicular orifices on the upper back region. Comedogenic potential of the test product (Venusia Max Cream – paraben free) was evaluated in comparison to positive (coconut oil) and negative (glycerin) controls in women. Each participant received topical application of test and control products under occluded patch to the skin on the upper aspect of the back, 3 times weekly for 4 weeks. Cyanoacrylate biopsies were performed before and after treatment to determine the microcomedones histologically. Microcomedones were graded using light microscopy and results were analyzed based on scale rating (0–3).

Results:

The mean comedone grading was assessed between positive versus negative control, and positive control versus test product. The mean comedone grades were significantly less in test product 0.41 ± 0.50 and negative control 0.82 ± 0.73 in comparison to positive control 2.09 ± 0.68. The test product was least comedogenic in this study. Furthermore, no adverse events were reported during the study period.

Conclusion:

Based on the histological evidence, Venusia Max Cream (paraben free) is a non-comedogenic, plant-based intense moisturizing cream and its use in regular skin care routine can be beneficial, particularly for acne prone and dry skin as it improves the skin hydration levels.
Numerical modelling of swirling momentumless turbulent wake dynamics
Authors: Деменков Андрей Геннадьевич , Черных Геннадий Георгиевич
Published: October 2021

С применением математической модели, включающей осредненные уравнения движения и дифференциальные уравнения переноса нормальных рейнольдсовых напряжений и скорости диссипации, выполнено численное моделирование эволюции безымпульсного закрученного турбулентного следа с ненулевым моментом количества движения за телом вращения. Получено, что начиная с расстояний порядка 1000 диаметров от тела течение становится автомодельным. На основе анализа результатов численных экспериментов построены упрощенные математические модели дальнего следа.

Swirling turbulent jet flows are of interest in connection with the design and development of various energy and chemical-technological devices as well as both study of flow around bodies and solving problems of environmental hydrodynamics, etc. An interesting example of such a flow is a swirling turbulent wake behind bodies of revolution. Analysis of the known works on the numerical simulation of swirling turbulent wakes behind bodies of revolution indicates lack of knowledge on the dynamics of the momentumless swirling turbulent wake. A special case of the motion of a body with a propulsor whose thrust compensates the swirl is studied, but there is a nonzero integral swirl in the flow. In previous works with the participation of the authors, a numerical simulation of the initial stage of the evolution of a swirling momentumless turbulent wake based on a hierarchy of second-order mathematical models was performed. It is shown that a satisfactory agreement of the results of calculations with the available experimental data is possible only with the use of a mathematical model that includes the averaged equations of motion and differential equations for the transfer of normal Reynolds stresses along the rate of dissipation. In the present work, based on the above mentioned mathematical model, a numerical simulation of the evolution of a far momentumless swirling turbulent wake with a nonzero angular momentum behind the body of revolution is performed. It is shown that starting from distances of the order of 1000 diameters from the body the flow becomes self-similar. Based on the analysis of the results of numerical experiments, simplified mathematical models of the far wake are constructed. The authors dedicate this work to the blessed memory of Vladimir Alekseevich Kostomakha.
An ant colony optimization algorithm with time window constraints relaxation for solving the vehicle routing problem
Authors: Долгова Ольга Эдуардовна , Пересветов Владимир Викторович
Published: October 2021

Рассмотрена задача маршрутизации транспорта с ограничениями по временным окнам. Требовалось составить план доставки товара клиентам, построив маршруты движения идентичных транспортных средств так, чтобы общая длина пройденного пути была минимальной. Для решения задачи разработан гибридный алгоритм. Он состоит из методов построения исходных решений, муравьиного алгоритма и локального поиска. В муравьином алгоритме в процессе формирования маршрутов разрешается нарушение временных ограничений при условии добавления штрафа в целевую функцию. Предложенный метод показал высокую эффективность при решении задач кластерного типа и задач с долгосрочным горизонтом планирования.

The purpose of this paper is to improve the performance of a hybrid method based on ant colony optimization (ACO) that finds approximate solutions of the vehicle routing problem with time windows (VRPTW). In order to solve this problem it is required to design a plan for goods delivery to the customers generating the routes of identical vehicles so that the total travelled distance is minimal. For the VRPTW solving, the hybrid method is developed in which a usage of trial solutions makes it possible to explore the most promising parts of the search space. The initial methods for solution construction, an ant colony optimization (ACO) algorithm and local search are proposed in the framework of the hybrid method. In the ACO algorithm, when generating the routes, it is allowed to violate the time window constraints. A method to restore the feasibility of solutions is implemented within the relaxation scheme under “returns in time” principle. Numerical results for solving all problems with 25, 50 and 100 customers from the Solomon test set are obtained. We provide the results on the time and deviation of the solution of these problems in comparison with the results of other authors. Some problems and their classes were solved much faster by the algorithm proposed in this paper. Relative deviations from optimal values of the objective function for the most complex tasks decrease with increasing decision time. The proposed approach can be considered to be an additional or an alternative algorithm for solving the cluster type and the long-term planning horizon problems of the VRPTW.
Modelling of summertime hydrothermal regime in the downstream pool of Krasnoyarsk hydroelectric power station
Authors: Шокин Юрий Иванович , Шапарев Николай Яковлевич
Published: October 2021

Предлагается модель летнего гидротермического режима р. Енисей в нижнем бьефе Красноярской ГЭС на основе детерминированного подхода. На теплообмен воды с окружающей средой влияют следующие физические процессы: поглощение водой прямой и рассеянной солнечной радиации; поглощение поверхностью воды тепловой инфракрасной радиации (ТИР), исходящей из атмосферы; излучение поверхностью воды ТИР; испарительный и конвективный теплообмен. Результаты моделирования сравниваются с температурными данными, полученными с гидропостов.

Here we consider the summertime hydrothermal regime in a 124-km river occurring within the interval (reach) downstream of the Krasnoyarsk HPP on July 3, 2016 based on the deterministic modelling approach. The reach area is divided by 4 cross-section lines (0.5, 40, 77, 124 km) with gauging stations at the first, second and forth section lines to measure water temperature. Temperature measurements at the gauging stations are taken at time
Unsteady deflection of ice cover in a frozen channel under a moving load
Authors: Шишмарев Константин Александрович , Хабахпашева Татьяна Ивановна
Published: October 2021

Рассмотрена нестационарная задача об изгибно-гравитационных волнах на поверхности замороженного ледового канала, вызванных движением внешней нагрузки. Задача решается методом преобразования Фурье вдоль канала и разложением прогибов льда по модам бегущих изгибно-гравитационных волн в канале. Предложен алгоритм, позволяющий привести решение, полученное с помощью обратного преобразования Фурье, к аналитическим формулам в виде суммы стационарных и нестационарных прогибов при конечных временах в системе координат, движущейся вместе с нагрузкой. Исследована эволюция прогибов во времени для разных скоростей движения нагрузки. Показано, что при увеличении времени решение для нестационарных прогибов ледовой пластины выходит на установившийся режим в системе координат, связанной с нагрузкой. Исследовано влияние коэффициента затухания на образование волн.

The non-stationary problem of a moving external load along the surface of a frozen channel is studied in this paper. The channel has a rectangular cross section and is filled with an ideal fluid. The ice cover on the surface of the liquid is modelled by a thin elastic or viscoelastic plate (Kelvin-Voigt model), which is frozen to the channel walls. The external load is modelled by a local pressure moving at a constant speed along the channel. The ice-fluid-load system initially is at rest. The flow caused by both the moving load and the ice deflection is supposed to be potential. The problem is solved using the Fourier transform along the channel and by the method of normal modes. The presence of the channel walls and boundary conditions on them lead to an infinite (countable) number of dispersion relations and critical speeds for the hydroelastic waves propagating in the channel. Depending on the speed of the load, the form of the ice cover oscillations has one of two main cases. When the load moves at a speed lower than the first critical speed, the ice deflection is localised in the vicinity of the load. When the load is moving at supercritical speed, a system of hydroelastic waves propagating from the load is formed. The number of these wave systems is finite and depends on the relation of the speed of the load with the critical speeds for the channel. It is shown that as time increases, the solution for the ice deflection converge to a steady state in the coordinate system moving with the load. The influence of the retardation time on the formation of the ice deflections is investigated.
Model for drilling mud losses into a system of natural fractures applied to the problem of estimation for parameters of fractured porous medium
Authors: Лапин В.Н.
Published: October 2021

Построена модель потерь бурового раствора в систему естественных трещин. Модель описывает радиальное течение раствора в трещине, деформацию ее берегов под действием давления раствора и утечку раствора в породу. Показана аналогия с моделью фильтрации раствора в трещиноватопористую среду. Сформулирована обратная задача нахождения параметров трещиноватопористой среды по зависимостям давления и величины потерь бурового раствора от времени в виде оптимизационной задачи. Показано, что на основе данных о потерях бурового раствора возможно найти только один из пары параметров, характеризующих трещиноватопористую среду: ширину трещин при известном количестве или проницаемость при известной пористости. Представлены результаты решения обратной задачи и зависимости ширины трещин от параметров пласта и раствора.

The loss of drilling mud in a rock during wellbore drilling is considered. The goal is to build a methodology for determining parameters of a fractured porous medium by analyzing the drilling mud loss rate and wellbore pressure as functions of time. To develop the methodology, the optimization problem for finding the fracturedporous medium parameters based on the pressure and mud loss dependences versus time is formulated. The direct problem is to find the dependence of the mud loss as a function of time using known parameters of the reservoir, the mud rheology and the pressure in the wellbore. To solve the direct problem, a model of mud loss to the system of natural fractures is proposed. The model describes the radial flow of mud in the natural fracture, the deformation of fracture sides under the pressure from mud and the leakoff of mud into the rock. The model has been verified by comparison with analytical solutions. An analogy with the model of fluid filtration into a dual porosity medium is shown. As a result of research, it was shown that, using the data of drilling mud losses, it is possible to find only one of a pair of parameters characterizing a fracturedporous medium, namely the width of cracks with a known amount or permeability with known porosity.
Pancreatic Origin Hepatoid Adenocarcinoma with Liver Metastasis
Authors:   Department of Internal Medicine, Stamford Hospital, USA, M Salehi , N Nwachukwu ,   Department of Internal Medicine, Stamford Hospital, USA, V Grijalva ,   Department of Internal Medicine, Stamford Hospital, USA, LZ Li ,   Department of Internal Medicine, Stamford Hospital, USA, PL Weinstein ,   Department of Hematology and Oncology, Stamford Hospital, USA
Published: October 2021

Hepatoid Adenocarcinoma (HAC) is a rare form of aggressive extrahepatic neoplasm with similar morphologic features to Hepatocellular Carcinoma (HCC). HAC with pancreatic origin is rare and the exact incidence is unknown. Given shared morphological and Immunohistochemical (IHC) characteristics, it may be difficult to distinguish metastatic HAC with liver involvement from primary HCC. We present a rare case of ductal type pancreatic hepatoid adenocarcinoma involving the pancreatic head, ampulla of Vater, and liver, and illustrate strategies for diagnosis and treatment. A 65-year-old woman presented with epigastric pain, vomiting, melena, and weight loss. There was direct hyperbilirubinemia with elevated hepatic markers. Imaging displayed a pancreatic head mass with moderate biliary obstruction and a hepatic lobe lesion. Fine needle biopsy of the liver mass initially was consistent with HCC, and biopsies of the pancreatic mass and ampulla walls showed pancreatic adenocarcinoma. Due to the unusual finding of co-existing HCC and pancreatic adenocarcinoma, the hepatic mass biopsy was sent for external evaluation, which revealed poorly differentiated adenocarcinoma, consistent with HAC of pancreatic origin. The tumor was positive for mucicarmine stain, HepPar1, CEA, and CK7. It was negative for MOC-31, Arginase, ALBISH, MGB, ER, TTF-1, GCDFP15, CK-20 and CDX2, thus confirming HAC. The patient was referred to outpatient chemotherapy with gemcitabine and paclitaxel however demonstrated progression and expired following recurrent bilateral pulmonary emboli. HAC may present with non-specific symptoms, is highly aggressive, and may be difficult to distinguish from primary HCC from histopathologic characteristics alone. Accurate diagnosis requires clinicohistopathologic and IHC analysis.
Comparison of COX-2 Selective and Traditional NSAIDs on Experimental Gastric Ulcer Healing in Humans
Authors:   Department of Medicine, Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA, JA Tau , W Qureshi ,   Department of Medicine, Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA, HMT El-Zimaity ,   Department of Medicine, Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA, AR Opekun ,   Department of Medicine, Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA, DY Graham ,   Department of Medicine, Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA
Published: October 2021

Background: Nonsteroidal anti-inflammatory drugs impair gastrointestinal ulcers healing. This study evaluated the role of cyclooxygenase isozymes COX- 1 and COX-2 in the healing of acute gastric ulcers in humans. Methods: This was an open-label, endoscopist-blind, parallel-group study, age and sex matched at baseline in normal volunteers. At endoscopy, we took four large jumbo forceps gastric mucosal biopsies (2 from each of the antrum and corpus). Subjects received celecoxib 200mg bid), naproxen 500mg bid), nabumetone 1000mg bid or placebo until end of study. Endoscopies were performed after 5 days and every 3 days until complete re-epithelialization of all lesions or 30 days. Survival analysis was used to compare time-to-healing defined as the day with complete re-epithelialization of all ulcers. Results: Fifty-two subjects completed the study, each received four biopsyinduced gastric ulcers (204 total ulcers; the majority included the muscularis mucosa). The mean time-to-healing was 9.4 ± 0.4 days with placebo, 10.5 ± 0.4 with celecoxib, 11.1 ± 0.6 with naproxen, and 12.3 ± 0.9 with nabumetone. The time to healing of each ulcer or all ulcers was significantly delayed compared to placebo with naproxen (p=0.01) and nabumetone (p=0.002) but not with celecoxib (p=0.07). Conclusion: The COX-1 preferential inhibitor naproxen and the balanced COX-1/COX-2 inhibitor nabumetone significantly delayed the healing of ulcers. With the COX-2 specific inhibitor celecoxib, healing was delayed but not significantly. Synthesis of COX-1 derived prostaglandins appears to be important in the healing of gastric ulcers in humans.
A Rare Case of Paediatric Pleomorphic Adenoma of the Parotid Gland
Authors:   Department of ENT, AJIMS, Mangalore, India, D Tantry , G Chitra ,   Department of ENT, AJIMS, Mangalore, India
Published: October 2021

Pleomorphic adenomas are benign salivary gland tumours, which predominantly affect the superficial lobe of the parotid gland. The “pleomorphic” nature of the tumour can be explained on the basis of its epithelial and connective tissue origin. The tumour has a female predilection between 30-50 years of age. Slowly progressing asymptomatic swelling is the usual presentation of the tumour. Surgical excision of the tumour mass forms the mainstay of treatment, with utmost care taken to preserve the facial nerve. This case report aims to throw light on an interesting case of pleomorphic adenoma of the parotid gland in a 10 years old female patient. The patient presented with a slowly progressing asymptomatic swelling on the right side of the face, which was diagnosed to be pleomorphic adenoma of right parotid gland. The aim of the study is to discuss how to proceed regarding the further management.
Utilization of Immediate Postpartum Intrauterine Contraceptive Device and Associated Factors among Women Who Gave Birth at Government Hospitals of Gamo Zone, Southern Ethiopia, 2019
Authors:   Lecturer, Arba Minch University, Arba Minch Town, Ethiopia, M Gebremedhin , A Alemayehu ,   Dilla University, Dilla Town, Ethiopia, M Yihune ,   Lecturer, Arba Minch University, Arba Minch Town, Ethiopia, T Melis ,   Wolkite University, Wolkite Town, Ethiopia, Y Fikadu ,   Wolkite University, Wolkite Town, Ethiopia, A Arja ,   Paster Ethiopian Public Health Institute, Addis Ababa, Ethiopia
Published: October 2021

Background: An intrauterine contraceptive device is suitable for women of all reproductive age groups for preventing unwanted pregnancies. Immediate post partum family planning services need to be emphasized where in the woman leaves the hospital with safe and effective contraception in place. Despite the accepted demand for post partum family planning, many women do not access the services they need prevent unintended pregnancies. Objective: To assess utilization of immediate postpartum intrauterine contraceptive device and associated factors among women who gave birth at government hospitals of Gamo Zone, Southern Ethiopia. Method: Facility-based crosses sectional study was conducted from March 1 to 30 of 452 participants were studied using systematic random sampling technique. Data were entered into Epi-data v. 4.2.2.1 and exported to SPSS v.23 for analysis. Crude or adjusted odds ratio, and 95% confidence interval were used to assess the strength of association and statistical significance. Variables which had a p-value of ≤0.25 in bivariate analysis were considered as candidates for multivariate regression analysis; variables that had a p-value of ≤0.05 in the multivariate analysis were considered as independent factors associated with utilization of immediate postpartum intrauterine contraceptive device among parturients in the final multiple logistic regression analysis. Results: This finding revealed that about 161 (36%) of the respondents had showed willingness to use immediate PPIUD, however, only about 62 (14%) of study participants were utilized immediate PPIUCD. Mothers who did not plan to have another child (AOR = 2.84, 95% CI, (1.12, 7.21), undecided plan to have another child (AOR = 2.55, 95% CI, (1.21, 5.35), counselled about PPIUCD (AOR=4.35, 95% CI, (2.11, 8.96) and completed ANC follow up (AOR=2.43, 95% CI, (1.28, 4.60) were associated with immediate post partum contraceptive device utilization. Conclusion and Recommendation: Even though 58% and 53% of the mothers were counselled and completed antenatal service respectively but efforts need to improve antenatal care service and integrate counselling service through the whole cascade of pregnancy.
The History of the North-Eastern Outskirts of Russia during the Empire Era in the Latest Historical Studies
Authors:   Irkutsk State University, Dameshek L. M. , Dameshek I. L. ,   Irkutsk State University, Sosnerzh K. A. ,   Irkutsk State University
Published: October 2021

In connection with the approaching 300th anniversary of the formation of the Russian Empire, the analysis of the latest monographic studies on the outskirts policy of the Russian state in the 18th – early 20 century is carried out. The fact of the introduction of previously unknown historical sources into scientific circulation, the emergence of new approaches to the study of the problem is noted. At the same time, it is noted that the topic of the outskirts policy of the empire is far from being exhausted and remains in demand by researchers.
Economics of Eastern Siberia in the Periodical Press of the United States of America in the Second Half of 19th Century
Authors:   Montgomery County Community College, Lisichnikova-Raskin A. V.
Published: October 2021

The purpose of this study is to trace how and by what principle the economy of Eastern Siberia was covered in the American press, as well as to understand what perception of the Siberian region was formed in the minds of American public under the influence of newspapers. The American periodicals of the second half of the nineteenth century published many articles on the geography, history, and economics of Eastern Siberia. The increase in the number of articles about Siberia in American newspapers indicates that there was a remarkable interest in the Siberian region, its natural resources, population, and economy. American newspaper publications about the Siberian economy can be roughly divided into three categories: trade, agriculture, and gold mining. Each category was studied in detail and the arguments and conclusions were corroborated by excerpts and quotes from the newspapers. Newspapers have played an important role in shaping the country's public opinion about Siberia and its natural and economic resources. American society in the second half of the nineteenth century envisioned Siberia as a vast territory, rich in natural reserves and awaiting the development by the brave Russian colonizers. American readers identified themselves with the Russian population of Siberia, which, like them, carried the beacon of “civilization” and economic progress to the distant territories. Newspapers extolled the virtues of hard work of Russian peasants and industrialists, who bravely conquered the harsh Siberian landscape. The American public was most interested in newspaper articles about the gold mining in Eastern Siberia. American prospectors wrote letters to the editorial offices of newspapers asking how and when they could get to Siberia for gold mining. Newspapers instilled hope in the American society, that the Russian tsar would soon open Siberia to the American entrepreneurs and investors; and the new industrial and commercial joint ventures would bring great economic benefits to both nations.
Jean Fearless and Isabella of Bavaria: The Duo That Destroyed France
Authors:   Ural Federal University, Nuzhdin O. I.
Published: October 2021

The article is devoted to the study of the collapse of the unity of France in the first third of the 15th century. During the civil war, Duke Jean the Fearless and Queen Isabella of Bavaria in 1417–1418. began to form alternative governing bodies to weaken the influence of their opponents in Paris. This led to the territorial disintegration of the country and the emergence of competing governments in the north and south of the kingdom.
Features of the Development of Kofun Culture in the Works of Ishino Hironobu
Authors:   Irkutsk State University, Mishchenkova M. S.
Published: October 2021

The article examines the studies of the famous Japanese archaeologist, Ishino Hironobu, in the area of the burial mound period (Kofun era) in the history of Japan. The main methods of studying the Kofun period by archaeologists and historians and the peculiarities of the application of these methods are highlighted. The main problems of the study of the kurgan period are outlined. Based on the analysis of the scientific works of Ishino Hironobu, characteristic features of the spiritual and everyday life of the inhabitants of ancient Japan are presented. Special attention is paid to rituals, holidays, food and iron production, and architectural features. Ishino's view of the chronology of the Kofun period, the origin of the “keyhole” mounds and the well-established theory of standardization of square-round kofun in the III-VII centuries are outlined.
Verulamium Excavations. Volume II
Authors: Shephard Frere
Published: October 2021

This is the second volume on the excavations at St Alban’s (Verulamium), Hertfordshire, in southern England, undertaken between 1955 and 1961, which covers all the work of those years (other than the row of shops in Insula XIV, described in volume 1). The Belgic mint, the Roman defences, the forum, the northern monumental arch, and the various intra-, and extra-mural structures are discussed, and there is a full treatment of the dating evidence, especially pottery, and a revised assessment of the town’s layout, history and status in Roman Britain.