bluuebunny/crossref_metadata_2025 huggingface dataset:
A study on clinico-epidemiological profile of scrub typhus in rural Bengal and therapeutic response to known drugs
Authors: Pandey Gopal
Published: April 2022

Background: Scrub typhus is an important cause of fever in South and East Asia and the Pacific, but is grossly underdiagnosed due to lack of awareness. This was a prospective observational study to study the clinical profile of scrub typhus in paediatric population in a tertiary care hospital in Rural Bengal of Malda district.Methods: The study was conducted from May 2021 to November 2021 among children presenting to OPD and admitted in IPD of Malda Medical College and Hospital in the Deparment of Paediatrics. Children under the age of 12 years presenting with signs and symptoms suggestive of scrub typhus were included in this study and serological diagnosis was confirmed by Scrub IgM ELISA with a positive titre >0.5.Results: Out of the 178 cases enrolled in our study, 136 were confirmed positive by ELISA. All the cases were admitted with fever (100%), other symptoms were vomiting (77.9%), cough (68.3%), abdominal pain (57.3%), maculopapular rash (52.9%), headache (49.2%), myalgia (41.1%), oedema (30.8%), conjunctival congestion (23.5%). Hepatomegaly (91.1%), splenomegaly (83.8%) and lymphadenopathy (75%) were the most common signs. Oral doxycycline in doses of 5 mg/kg/day in 2 divided doses were given in half the cases (68) and azithromycin (10 mg/kg/day) were given in 34 cases, while 34 cases were given oral chloramphenicol (75 mg/kg/day). Doxycycline and chloramphenicol were equally effective with defervescence in maximum cases within 48 hrs. Azithromycin response was poor with fever persisting in 80% cases after 48 hrs.Conclusions: Scrub typhus must be included in the differential diagnosis of acute febrile illness in children with or without eschar for its early detection and prompt treatment leading to favourable outcome. Doxycycline or Chloramphenicol were equally effective in treatment while Azithromycin showed poor response.
The coalition of three f: family, friend and firms; a study on migrant entrepreneurs in Mumbai
Authors: Talukdar Bedanga , Roy Archana K.
Published: April 2022

Background: The paper examines how family and friends help successfully manage a firm and support in entrepreneurial activities. Entrepreneurial activity necessitates long-enduring working hours and often involves financial and emotional hardships. The study explores the collective effect of migrants’ social capital, i.e., family and friend which facilitating labour and finance at new location. Methods: For the present study, the primary survey was conducted in Mumbai from February 2018 to August 2018. A total sample of 540 self-employed migrants operating the business in Mumbai were interviewed.Results: There are distinctive migration network channels in the form of family relatives, kin, friends, co-villager, local acquaintance. Age and marital status have surfaced to be paramount predictors for choosing self-employment. Confounders like bonds among family members, kins, friends and community support play an important in operating the enterprise. Results from logistic regression suggest that married entrepreneurs are 0.64 times more likely to have higher income than the never married individuals. Firms where spouses were actively engaged, were more likely to have higher income than reference category. The number of family members living together and helping firm activity is statistically significant with better business performance.Concussions: Salient findings suggest there is a greater degree of reliance among household members in migrant families. Migrant family members depict interpersonal bonds and common self-interest to provide financial and labour resource that helps in establishing and operating a business. Migrant network plays a key role in facilitating informal lending institutions providing credit and finance.
Mental health among pregnant women: a comparative study between primi and multigravida subjects
Authors: Sharma Hemlata , Sharma Shikha
Published: April 2022

Background: Worldwide about 10% of pregnant women and 13% of women who have just given birth experience a mental disorder, primarily depression. In developing countries this is even higher, i.e. 15.6% during pregnant and 19.8% after child birth. As this study indicates the impact of pregnancy on mental health of antenatal women. Mental health during pregnancy has great significance not only for women but it may also impact a child's growth and psychological development recognizing the need of mental health care for antenatal women motivated present study. Aim of the study is to assess the mental health among the pregnant women.Methods: The research design used in this study is survey research design. The sample comprises of 90 women in primi and multigravida. The study was conducted in the department of gynaecology of Geetanjali Medical College and Hospital Udaipur, Rajasthan India.Results: Purposive randomized sampling was used to conduct the research appropriate test used to carry out the study. The result shows that mental health of multigravida is poor in comparison to primigravida.Conclusion: Study concludes that there is significant difference in the mental health of the subjects between the group of multigravida and primigravida and there is no significance difference in the mental health observed within the group of primi and multigravida subjects.
Finding sustainable solutions for childhood under-nutrition in India: an assessment of association of childhood under-nutrition with multiple factors
Authors: Chatterjee Keya , Sinha Rajesh , Kumar Praveen
Published: April 2022

Background: Burden of malnutrition among children is very high in India. Under-nutrition is an interplay of different factors. The present study tried to understand the correlation between child under-nutrition and different distal and proximate factors.Methods: Correlation coefficients (r), using state wise data, were calculated to assess relationship between child nutritional status and other factors such as minimum acceptable diet, micronutrient deficiencies, IYCF, maternal nutritional factors, women agency, water and sanitation practices, HDI, food insecurity and climate change vulnerability.Results: Minimum acceptable diet showed negative correlation with childhood wasting (-0.41) and stunting (-0.36). They were positively correlated with any form of anaemia and vitamin A deficiency. Both basic and age-appropriate immunisation was negatively correlated with wasting (r=-0.2 and -0.5 respectively) and stunting (r=-0.5 and -0.7 respectively). Maternal nutritional factors (BMI<18.5 kg/m2 and any form of maternal anaemia) were positively correlated with childhood nutritional status. Strong negative correlation of both wasting and stunting were found with households having toilet facilities (r=-0.7 in both cases). Indoor air pollution was positively correlated with wasting (r=0.6) and stunting (r=0.2). Both wasting (r=-0.50) and stunting (r=-0.70) were negatively correlated to HDI. Food insecurity and climate change vulnerability were positively correlated with both wasting (r=0.3 for both case) and stunting (r=0.6 and 0.40 respectively).Conclusions: A synergetic programme that brings together essential nutritional interventions and those that address underlying and basic causes is required to sustainably address childhood under-nutrition in India.
Perceived health versus perceived disability among individuals with lower limb amputation and its associating factors: evidence from an exploratory study in Mumbai and Kolkata, India
Authors: Chanda Srei , Sekher T. V.
Published: April 2022

Background: Self-rated health (SRH) has been used to predict the perception of health in objective measures. Understanding the perception of disability goes beyond simple perception of health. Lower limb amputation and locomotors disability has been studied in various aspects, however, measurement of the extent of disability in a single term has hardly been done. This study aims to find the difference between perceived health (SRH) and perceived disability self-rated disability (SRD) and its association with demographic and socio-economic factors.Methods: A primary study has been conducted on 270 adult lower limb amputees in Mumbai and Kolkata following mixed methodology approach. Descriptive statistics, correlations and narration were used to measure the SRH and SRD among individuals with lower limb amputation.Results: The 63% of respondents have achieved good SRH, while only 43% have achieved good SRD. Prosthetics satisfaction, perceived support, perceived body shape, and level of education influence the SRH and SRD. Health components explain SRH, whereas, functional components explain SRD more.Conclusions: SRD can be better in analyzing the coping with the disability status, and promoting the role of health care and rehabilitation programs. It can be used not only for the population having disability, but in a larger population with functional restrictions that can be used to address the health care need.
Effect of Room’s Temperature and Electrode Gap on Current of Negative Corona Discharge in Rod-Plane Electrode Configuration
Authors: Ouatah El Hanafi , Megherfi Soufiane , Bendahmane Boukhalfa , Zebboudj Youcef
Published: April 2022

The stable corona discharge is widely used in filtration and electrostatic separation in recent years, and several models have been used by researchers to analyze one of its most important properties which is the current-voltage characteristic. The aim of this paper is to investigate the influence of ambient temperature and electrodes’ gap on negative DC discharge using rod-plane geometry, and the Townsend formula was found to be most appropriate model (I=K.V.(V-V0)). The experimental results show that for the same voltage level applied to the high voltage electrode, the discharge current rises with increasing temperature and decreases as the electrodes’ gap increases. Using curve ﬁtting, it was proven that the geometric factor K is proportional to temperature and to the power of the distance between electrodes independently, and the threshold voltage V0 is proportional to the product of the temperature reciprocal and the power of the inter-electrode spacing. From these results, a new modified Townsend formula by introducing the air temperature and the distance between electrodes is proposed to calculate the discharge current with an accuracy of ±10%.
Restoring Strength of Reinforced Concrete Horizontally Curved Box Beam with Opening Using Reactive Powder Concrete (RPC) and FRP Techniques
Authors: Hashim Ameer Mohsin , Ali Ammar Yasier
Published: April 2022

This study is devoted to test the structural response of reinforced concrete horizontally curved box beams in presence of vertical and transverse opening restored by CFRP Laminates or Reactive Powder Concrete (RPC) technique and compared to that having opening but without restoring. Six horizontally circular curved box beams were casted and tested in this experimental work, three specimens with opening in vertical direction and the other three specimens including opening in transverse direction. Accordingly, each direction has three types of beams, first one including opening without restoring and used as a reference specimen, second one with opening restored by CFRP Laminates technique and third one with opening restored by Reactive Powder Concrete (RPC) technique. The test program includes the main variables; direction of opening. The beams were tested as a two-span continuous beam, each span represents a quarter circle, under the effect of two concentrated loads each load positioned at top face of midspan of the beam. The findings of the experiments showed that the use of Reactive Powder Concrete (RPC) and CFRP Laminates and techniques around opening notably increased the ultimate load capacity of specimens (CB2.V60.S1, CB3.V60.S2, CB5.T60.S1 and CB6.T60.S2) by about (18.5% and 15.3%,135% and 38.3%) respectively, when compared with specimens without restoring. Service mid-span deflection response not give clear effect, while service mid-span twisting was improved by about (55.28%, 13%, 10.73% and 2.37%) for all restored specimens (CB2.V60.S1, CB3.V60.S2, CB5.T60.S1 and CB6.T60.S2) respectively. Genially, significant increase in stiffness can be observed for restored specimens as a comparison with those without restoring.
A Novel Gibbs Entropy Model Based upon Cross-Efficiency Measurement for Ranking Decision Making Units
Authors: Wichapa Narong , Khanthirat Wanrop , Sudsuansee Thaithat
Published: April 2022

Cross-efficiency measurement in data envelopment analysis (DEA) was developed to overcome the main disadvantage of DEA in discriminating decision making units (DMUs). However, the results obtained from each cross-efficiency model (Benevolent and aggressive models) may not generally be the same for similar problems, and each model may provide different viewpoints that we should take each model into account at the same time. Since Gibbs entropy is one of powerful tools to measure uncertainty, in this paper a novel linear programming model based on the concepts of Gibbs entropy (GE model) has been offered to combine cross-efficiency scores, which are obtained from the viewpoints of benevolent and aggressive models, for ranking DMUs. In order to validate the proposed GE model, it is tested with two examples, including the performance assessment problem and the relative efficiency of seven Thai provinces. The main advantages of the GE model are that it can be used to tackle large size problems with uncertainty, and it can be used to combine other models for ranking DMUs. In addition, the set of multiple solutions of optimal weights for each model can be ignored. By using the proposed model, decision-makers can achieve more reliable decision than individual models.
Wegstein's Method for Calculating the Global Extremum
Authors: Tutkusheva Zhailan Salavatovna , Kazbekova Gulnur Nagimetovna , Seilkhanova Rakhila Beksovna , Kairakbaev Aiat Krymovich
Published: April 2022

This study discusses an economical and efficient method for calculating the global optimum of a function of many variables. The proposed algorithm can be attributed to methods based on auxiliary functions. The auxiliary function itself is obtained by converting the objective function using the Lebesgue integral and is a function of one variable. In a previously published paper by one of the authors of this article, this auxiliary function was used to calculate the global minimum of smooth multiextremal functions on convex closed sets. In the same article, an algorithm was proposed for dividing a segment into half to find a global minimum. And in this paper we consider the problem of finding the global minimum of continuous functions defined on bounded closed subsets of an n-dimensional Euclidean space. In addition, curious properties of the auxiliary function are established that are valid for any continuous objective function. For example, its non-negativity, positive homogeneity of some order, uniform continuity, differentiability and strict convexity are proved, and higher-order derivatives are calculated. The optimality criterion is established. The essence of this optimality criterion is that the value of a variable at which the auxiliary function and its derivatives are equal to zero up to a certain order turns out to be equal to the global minimum of the objective function. It follows from this optimality criterion that to calculate the global minimum of the objective function, it is sufficient to find the zero of the auxiliary function or its derivative up to the m-th order. Therefore, Wegstein's algorithm was used as a way to find the root of an equation with one unknown. In addition, the advantage of the Wegstein’s method is that it always converges. And in this situation, it turned out to be more efficient, despite its slow convergence, since it requires almost half the number of calculations of the values of the auxiliary function and that halves the need for numerical calculations of multiple integrals with a large number of variables.
La deferencia judicial permite que emerja el consenso europeo
Authors: Dothan Shai
Published: April 2022

El Tribunal Europeo de Derechos Humanos (TEDH) indaga en políticas de derechos humanos adoptadas por la mayoría de los países de Europa. Utilizando una doctrina conocida como el “consenso emergente”, el Tribunal impone tales políticas como una obligación jurídica internacional a todos los países bajo su jurisdicción. Sin embargo, en ocasiones, el TEDH cede ante los Estados, incluso si sus políticas no están a la altura del estándar aceptado por la mayoría de los países de Europa. Esta deferencia se logra utilizando la doctrina llamada “margen de apreciación”. Naturalmente, el consenso emergente y el margen de apreciación se conciben, a menudo, como doctrinas en competencia: cuanto más hay de una, menos hay de otra. En el presente artículo se sugiere una nueva justificación de la doctrina del consenso emergente: la doctrina puede permitir que el TEDH formule buenas políticas recurriendo a la toma de decisiones independiente de muchos países similares. A la luz de ello, el documento demuestra que una aplicación correcta de la doctrina del margen de apreciación ayuda, realmente, a que el consenso emergente alcance resultados óptimos, al dar a los países un incentivo para elaborar sus políticas de forma independiente.

El Tribunal Europeo de Derechos Humanos (TEDH) indaga en políticas de derechos humanos adoptadas por la mayoría de los países de Europa. Utilizando una doctrina conocida como el “consenso emergente”, el Tribunal impone tales políticas como una obligación jurídica internacional a todos los países bajo su jurisdicción. Sin embargo, en ocasiones, el TEDH cede ante los Estados, incluso si sus políticas no están a la altura del estándar aceptado por la mayoría de los países de Europa. Esta deferencia se logra utilizando la doctrina llamada “margen de apreciación”. Naturalmente, el consenso emergente y el margen de apreciación se conciben, a menudo, como doctrinas en competencia: cuanto más hay de una, menos hay de otra. En el presente artículo se sugiere una nueva justificación de la doctrina del consenso emergente: la doctrina puede permitir que el TEDH formule buenas políticas recurriendo a la toma de decisiones independiente de muchos países similares. A la luz de ello, el documento demuestra que una aplicación correcta de la doctrina del margen de apreciación ayuda, realmente, a que el consenso emergente alcance resultados óptimos, al dar a los países un incentivo para elaborar sus políticas de forma independiente.
Turystyka jako dyscyplina nauki (artykuł dyskusyjny)
Authors: Butowski Leszek
Published: April 2022

W artykule podjęto dyskusję nad głównymi dylematami metodologicznymi związanymi z turystyką jako przedmiotem badań naukowych. W jego pierwszej części wskazano na turystykę będącą przedmiotem zainteresowania różnych dyscyplin nauki. W drugiej podjęto krytyczną dyskusję na temat podejścia wielodyscyplinarnego i interdyscyplinarnego w badaniach nad turystyką. Trzecią część stanowi analiza stanowisk metodologicznych dotyczących możliwości autonomizacji turystyki jako dyscypliny nauki. W podsumowaniu zaproponowano model rozwoju badań nad turystyką, ukierunkowany na autonomizację nauki o turystyce.
Przestrzenny rozkład ruchu turystycznego w Polsce w sezonie letnim w świetle danych o frekwencji w wyborach prezydenckich w 2010 roku
Authors: Potocki Jacek
Published: April 2022

W 2010 r. w czasie letnich wakacji przeprowadzono w Polsce wybory prezydenckie. Wzięło w nich udział wiele osób przeby-wających poza miejscem stałego zamieszkania. Dane o liczbie osób przyjezdnych głosujących w poszczególnych gminach posłużyły do wyznaczenia obszarów o nasilonym ruchu turystycznym. Przeprowadzona analiza wykazała bardzo silną koncentrację ruchu turystycznego i jego polaryzację (na północnym i południowym skraju Polski oraz w kilku dużych miastach).
Produkt turystyczny w gospodarce doświadczeń
Authors: Stasiak Andrzej
Published: April 2022

Przełom XX i XXI w. to rozwoju tzw. gospodarki doznań, w której podstawowym towarem stają się nie konkretne produkty, ale emocje, przeżycia i doświadczenia klientów. Turystyka była i jest swoistym "przemysłem wakacyjnych doświadczeń". W ostatnich latach jednak jeszcze wyraźniej niż do tej pory kładzie się nacisk na świadome kreowanie produktów turystycznych silnie nasyconych emocjami. Usilnie dąży się do multiplikowania oraz intensyfikacji wrażeń turystów. Do najważniejszych działań w tym zakresie zaliczono: przekształcanie infrastruktury turystycznej w unikatowe atrakcje turystyczne, wzbogacanie tradycyjnych usług/pakietów usług o dodatkowe elementy zapewniające dodatkowe doznania i satysfakcje, wykorzystanie nowoczesnych technologii wzbogacania realnej przestrzeni turystycznej o wirtualne byty (rozszerzona rzeczywistość), a także wygodnego zapisywania doświadczeń turystycznych oraz dzielenia się wrażeniami z masową publicznością.
РАЗРАБОТКА СПОСОБА НИЗКОТЕМПЕРАТУРНОГО ОБЕСКРЕМНИВАНИЯ АКТИВИРОВАННОГО ЦИРКОНОВОГО КОНЦЕНТРАТА РАСТВОРОМ NH4HF2
Authors: Смороков Андрей Аркадьевич , Кантаев Александр Сергеевич , Брянкин Даниил Валерьевич , Миклашевич Анна Андреевна
Published: April 2022

Ссылка для цитирования: Разработка способа низкотемпературного обескремнивания активированного цирконового концентрата раствором NH4HF2 / А.А. Смороков, А.С. Кантаев, Д.В. Брянкин, А.А. Миклашевич // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2022. – Т. 333. – № 4. – С. 27-36.

Актуальность. Исследование обосновано целесообразностью разработки технологии переработки активированных цирконовых концентратов с получением бадделеитового концентрата, используемого для изготовления высокотемпературной керамики, и с возможностью регенерации основного реагента. При этом получаемый диоксид кремния в качестве побочного продукта может быть использован для изготовления изделий из силикатной керамики. Цель: определить максимальную степень обескремнивания активированного цирконового концентрата водным раствором гидродифторида аммония с получением бадделеитового концентрата; предложить схему переработки активированного цирконового концентрата с получением бадделеитового концентрата и диоксида кремния. Объекты: раствор гидродифторида аммония, термоактивированный цирконовый концентрат, водный раствор аммиака. Методы: экспериментальные исследования, рентгенофлюорисцентный анализ, рентгенофазовый анализ, атомно-эмиссионная спектроскопия, инфракрасная спектроскопия. Результаты. Определены условия селективного удаления кремния из активированного цирконового концентрата с получением бадделеитового концентрата в качестве целевого продукта и диоксида кремния в качестве попутного продукта. Влияние концентрации гидродифторида аммония в выщелачивающем растворе на степень обескремнивания активированного цирконового концентрата незначительно. Оптимальные условия проведения выщелачивания следующие: концентрация раствора NH4HF2 – 30 %, продолжительность – 60 минут, температура – 90 °С; соотношение твердого к жидкому – 1:5. При данных условиях более 97 % кремния переходит в раствор. В процессе выщелачивания диоксид циркония частично реагирует с выщелачивающим реагентом с образованием гептафтороцирконата аммония, характеризуемого более низкой растворимостью в растворе в сравнении с фторидами аммония и гексафторосиликатом аммония. Последующий обжиг позволяет перевести гептафтороцирконат обратно в диоксид циркония. Получаемый раствор гексафторосиликата аммония используется для получения аморфного диоксида кремния и раствора фторида аммония, служащего сырьем в процессе регенерации выщелачивающего раствора с повторным его использованием для переработки новой партии сырья. По результатам работ предложена технологическая схема получения бадделеитового концентрата. Схема характеризуется отсутствием отходов.
ЦИФРОВАЯ МОДЕЛЬ ИЗНОСА КОНВЕКТИВНЫХ ПОВЕРХНОСТЕЙ ТЕПЛООБМЕНА ПЫЛЕУГОЛЬНОГО КОТЛА
Authors: Тюрина Элина Александровна , Медников Александр Станиславович
Published: April 2022

Ссылка для цитирования: Тюрина Э.А., Медников А.С. Цифровая модель износа конвективных поверхностей теплообмена пылеугольного котла // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2022. – Т. 333. – № 4. – С. 141-150.

Актуальность исследования обусловлена необходимостью использования непроектных углей на действующем оборудовании ТЭС. Как известно, использование таких углей может негативно сказаться на работе, в первую очередь, угольного котла. Цель: определить межремонтный период, а также скорость низкотемпературной коррозии и абразивного износа конвективных поверхностей (воздухоподогревателя и водяного экономайзера), вызванных использованием различных углей (Азейского, Мугунского, Переясловского и Ирбейского месторождений) и их смесей. Методы: математическое моделирование и комплексная технико-экономическая оптимизация параметров моделей с применением автоматизированной системы машинного построения программ, которая предназначена для генерации математических моделей исследуемых установок на основании математических моделей отдельно взятых элементов, информации о технологических связях между ними, целях расчета. Данный комплекс разработан в Институте систем энергетики им. Л.А. Мелентьева СО РАН. Результаты. Для оценки последствий использования непроектного топлива разработана достаточно точная математическая модель парового котла БКЗ-420-140. Проведены исследования на математической модели котла с целью определения оптимальных составов топлива для минимизации эксплуатационных издержек, связанных с изменением топлива, и увеличения межремонтного периода конвективных поверхностей нагрева для повышения надежности работы котельного агрегата. Построены аппроксимационные зависимости скорости низкотемпературной коррозии металла от средней температуры стенки труб и сернистости сжигаемого топлива. Получены технико-экономические показатели работы котлоагрегата на углях Азейского, Мугунского, Переясловского и Ирбейского месторождений, а также на угольных смесях (Азейский уголь (7 %) + Ирбейский уголь (93 %), Азейский уголь (23 %) + Переясловский уголь (77 %), Переясловский уголь (80 %) + Мугунский уголь (20 %), Ирбейский уголь (95 %) + Мугунский уголь (5 %)).
УВЕЛИЧЕНИЕ ПРОПУСКНОЙ СПОСОБНОСТИ ЭЛЕКТРИЧЕСКОЙ СЕТИ И ПОВЫШЕНИЕ ЭНЕРГОЭФФЕКТИВНОСТИ ДЕЙСТВУЮЩЕЙ ЭЛЕКТРОЭНЕРГЕТИЧЕСКОЙ СИСТЕМЫ НЕФТЕГАЗОПРОМЫСЛОВЫХ ПОТРЕБИТЕЛЕЙ
Authors: Латыпов Ирек Салихович , Сушков Валерий Валентинович , Хмара Гузель Азатовна , Паршуков Андрей Николаевич , Хамитов Рустам Нуриманович
Published: April 2022

Ссылка для цитирования: Увеличение пропускной способности электрической сети и повышение энергоэффективности действующей электроэнергетической системы нефтегазопромысловых потребителей / И.С. Латыпов, В.В. Сушков, Г.А. Хмара, А.Н. Паршуков, Р.Н. Хамитов // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2022. – Т. 333. – № 4. – С. 236-247.

Актуальность обусловлена тем, что электроэнергетические системы нефтегазопромысловых потребителей представлены преимущественно воздушными линиями электропередачи, выполненными неизолированными витыми проводами типа А, АС. При этом на долю воздушных линий класса напряжения 6–35 кВ, эксплуатируемых более 35 лет, приходится порядка 55 % от всей протяженности линий данного класса напряжения, что говорит о необходимости их модернизации в ближайшем будущем. Имея низкую стоимость и хорошие показатели теплоотдачи, данные провода уступают другим типам в надежности и механической прочности при ветровой и гололедной нагрузках. В меньшей степени в электроэнергетических системах нефтегазопромысловых потребителей представлены самонесущие изолированные провода, обладающие, однако, меньшей теплоотдачей в сравнении с А и АС проводами. С целью увеличения механической прочности в системах электроснабжения используют провода типа АСВП, АААС, АССС, Аero-Z и другие, также уступающие проводам типа А и АС в теплоотдаче. Таким образом, поиск новых технических решений и обоснованный выбор типов проводов с точки зрения энергоэффективности передачи электрической энергии с учетом действия на них механических нагрузок являются актуальными научно-техническими задачами.  Цель: увеличение пропускной способности электрической сети и повышение энергоэффективности действующей электроэнергетической системы нефтегазопромысловых потребителей. Объекты: электроэнергетическая система нефтегазопромысловых потребителей, представленная распределительной электрической сетью, выполненной воздушными линиями электропередачи. Предмет исследования – зависимость пропускной способности электрической сети и энергоэффективности передачи электрической энергии линии электропередачи от конструкции провода воздушной линии. Методы: математического анализа, положения теоретических основ электротехники, математическое моделирование в программном комплексе RastrWin3. Результаты. В процессе математического моделирования установлено, что применение предложенной авторами энергоэффективной конструкции провода способно снизить операционные затраты на потери электроэнергии на проблемных участках воздушных линий на 11,8 %. При этом пропускная способность реконструируемых участков электрической сети увеличится на 19,6 % без строительства дополнительных ВЛ-6 кВ.
ТОКСИЧНЫЕ ЭЛЕМЕНТЫ В ПРИРОДНЫХ ВОДАХ СЕВАСТОПОЛЬСКОЙ ГОРОДСКОЙ АГЛОМЕРАЦИИ: РАСПРЕДЕЛЕНИЕ, ФОН, АНОМАЛИИ
Authors: Новиков Дмитрий Анатольевич , Черных Анатолий Витальевич , Хващевская Альбина Анатольевна , Максимова Анастасия Алексеевна , Деркачев Антон Сергеевич , Дульцев Федор Федорович , Ничкова Лариса Александровна , Сигора Галина Анатольевна , Хоменко Тамара Юрьевна , Яхин Тимур Анисович
Published: April 2022

Ссылка для цитирования: Токсичные элементы в природных водах Севастопольской городской агломерации: распределение, фон, аномалии / Д.А. Новиков, А.В. Черных, А.А. Хващевская, А.А. Максимова, А.С. Деркачев, Ф.Ф. Дульцев, Л.А. Ничкова, Г.А. Сигора, Т.Ю. Хоменко, Т.А. Яхин // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2022. – Т. 333. – № 4. – С. 79-92.

Актуальность. До настоящего исследования по природным водам Севастопольской городской агломерации отсутствовали актуальные сведения по распределению широкого спектра высокотоксичных элементов. Цель: установить характеристики гидрогеохимического фона и изучить распределение высокотоксичных химических элементов в водах питьевого водоснабжения населения Севастопольской городской агломерации на основе актуальных сведений об их химическом составе, полученном современными методами анализа. Методы. Лабораторное изучение химического состава методами титриметрии, ионной хроматографии, масс-спектрометрии с индуктивно связанной плазмой проводилось в Проблемной научно-исследовательской лаборатории гидрогеохимии Инженерной школы природных ресурсов Томского политехнического университета. Оценка токсикологических особенностей вод проводилась с использованием действующих нормативных документов: СанПиН 1.2.3685-21, ГОСТ Р 51232-98, СанПиН 2.1.3684-21, и рекомендаций Всемирной организации по здравоохранению. Результаты. Для природных вод территории Севастопольской городской агломерации установлены характеристики гидрогеохимического фона и аномалий. Выявлено, что концентрации большинства изученных токсичных элементов находятся ниже ПДК (V, Cr, Cu, Zn, Mo, Cd, Pb и Bi). Ряд объектов отличается превышением предельно допустимых концентраций по Fe, Mn, Co, Ni и Tl. По нормируемым химическим элементам в настоящее время наиболее неблагоприятные условия характеризуют воды села Колхозное. Практически на всей территории Гераклейского полуострова установлены высокие содержания урана и повышенные мышьяка. Огромное влияние на ухудшение качественных характеристик природных вод оказали засухи 2018–2020 гг., приведшие к росту концентраций практически всех микрокомпонентов не только в поверхностных, но и в подземных водах, включая скважины, родники и колодцы. Выявление роли природных и антропогенных факторов в процессах формирования гидрогеохимического поля эксплуатируемых водоносных горизонтов на территории Севастопольской городской агломерации требует продолжения мониторинговых исследований, начатых в 2018 г.
Ruang l^p pada Norm-2 Lengkap
Authors: Utami Sri , Rahman Hairur , Ismiarti Dewi
Published: April 2022

The space l^p with 1≤p∞ is the set of real numbers that satisfy _(n=1)^∞▒〖|x_n |^p∞〗.The function in the vector space X which has real value which fulfills the norm-2 properties is denoted by ,⋅‖ and the pair (X,‖⋅,⋅‖) is called the norm-2 space.A norm-2 space is said to be complete or called a Banach-2 space if every Cauchy sequence in the space converges to an element in that space.This research was conducted to prove the l^p space in the complete norm-2.The first step to prove the completeness is to prove that the norm contained in l^p with 1≤p∞ satisfies the properties of norm-2.Next, prove that the norm derived from norm-2 is equivalent to the norm in l^p.Next shows that every Cauchy sequence in space l^p converges to an element in space l^p.Based on this proof, it is found that (l^p,‖⋅,⋅‖) is a complete norm-2 space.
Cambodia’s Covid-19 Response and Migrant Workers
Authors: Bunthea Keo , Kasper Eric , Chiang Mina , Chen Sharlene
Published: April 2022

As in many Southeast Asian countries, the coronavirus (Covid-19) pandemic and policies to limit its spread greatly disrupted Cambodia’s economy. Workers in Cambodia overwhelmingly operate in the informal sector and remittances from migrant workers abroad constitute a significant portion of the country’s overall gross domestic product. This briefing examines Cambodia’s Covid-19 response to highlight how knock-on effects have disproportionately impacted vulnerable migrants and informal domestic workers, including human-trafficking survivors. The government should provide social support to these vulnerable groups. Future efforts to manage Covid-19 must consider how they will affect the most vulnerable.
Thoughts on Antitrust of Digital Economy in the New Era
Authors: Lu Xin
Published: April 2022

With the development of the new generation of Internet technology, digital economy plays an important role in the economic society. Under the new social development trend, how to deal with the antitrust supervision problems brought by the large-scale Internet platform has become a common challenge faced by governments all over the world. China's digital economy antitrust has entered a period of comprehensive supervision. Therefore, we need to fully understand the causes of platform economic monopoly, put forward a more perfect and scientific scheme for the supervision of platform antitrust, and pave the way for the sustainable and healthy development of platform economy.
A Comparative Study on the Impact of Financial Literacy and Overconfidence on Risk Attitudes
Authors: Ma Ruizhe , Wang Yuhan
Published: April 2022

Based on the data of the NFCS in the United States in 2012 and 2015, we measured the level of personal financial literacy and financial literacy overconfidence. By using the Ordered Probit model empirical research, we found that financial literacy and risk appetite were significantly positively correlated, but the positive correlation between financial literacy overconfidence and risk appetite were even tighter. The results of the study showed that people with higher financial literacy levels had greater willingness to take risks, but if there were overconfidence in financial literacy, their risk appetite will be greater.
Legislative Response to College Students’ Non-altruistic Charitable Donations
Authors: Shu Ying
Published: April 2022

Donation behavior is premised on the willingness to donate, and the latter is based on the motivation of donation. Only by fully recognizing the donors’ donation motivation can their willingness to donate be better stimulated, thereby guiding and encouraging more donation behaviors. By conducting a questionnaire survey of charitable donations in colleges and universities, it is found that non-altruistic motivations including material interests and specific preferences are positively correlated with human well-being & happiness, while motivations such as honor pursuits & social identity have a negative correlation with human well-being & happiness. Therefore, we should actively build an incentive mechanism for college students’ charitable activities in response to their pursuits of material interests, and strive to improve the incentive mechanism to stimulate college students’ personalized donation willingness and suit their specific preferences. At the same time, we should try to set up a restriction mechanism for college students’ non-altruistic charitable donation motivations, and guard against the reversing guiding effect of motivation of honor pursuits & social identity on college students’ charitable donations behavior.
A few words on grapevine winter buds and pruning in consideration of sap flow
Authors: Deloire Alain , Dumont Carole , Giudici Massimo , Rogiers Suzy , Pellegrino Anne
Published: April 2022

One objective of pruning it to manage yield per vine (or per m2) and this is achieved by regulating the number of latent buds (i.e.  buds which bear the primordia of inflorescences).  For many year growers and wineries have been interested in what is currently called: gentle pruning, precision pruning, or pruning with respect to sap flow! But what is hiding behind these concepts?
MÉTODOS FÍSICOS DE SUPERAÇÃO DE DORMÊNCIA DE SEMENTES DE Enterolobium contortisiliquum (VELL.) MORONG
Authors: Alves de Oliveira Rayna Régina , Araújo Fortes Rodrigo , Campos Aguiar Bruno Aurelio , Carvalho da Silva Renata , Gama Teixeira Lorena , Ferreira dos Santos André , Bezerra de Souza Priscila
Published: April 2022

Esse estudo teve como objetivo identificar o método físico mais eficaz para superação de dormência de sementes de Enterolobium contortisiliquum (Vell.) Morong.  (tamboril), que apresentam alto grau de dormência e baixo nível de germinação, o que pode dificultar a produção de mudas. Utilizou-se delineamento inteiramente casualizado, constituído por seis tratamentos, cada um com 40 repetições, semeados em sacos plásticos com dimensões de  12 x 20 cm contendo substrato a mistura de terra, areia e esterco bovino, sendo realizadas regas diárias para manutenção da umidade do substrato. Os tratamentos foram constituídos por: T1 = Testemunha; T2 = Escarificação mecânica; T3 = Escarificação mecânica com imersão em água por 6 horas; T4 = Corte por tesoura de poda; T5 = Corte por tesoura de poda com imersão em água por 6 horas; T6 = Imersão em água fervente até resfriamento em temperatura ambiente. Avaliou-se a porcentagem de germinação, índice de velocidade de germinação (IVG) e tempo médio para germinação (TMG). Os resultados permitiram inferir que o tratamento T4 foi o tratamento que apresentou maior eficiência na superação de dormência de sementes de tamboril, levando-se em consideração que é um método simples, possui baixo custo/benefício e facilidade operacional.
Dimensi Ekonomi Politik Dunia Ketiga dalam Sistem Perdagangan Internasional
Authors: Alwi Syafaruddin
Published: April 2022

Fenomena dunia ketiga sampai saat ini tetap menarik untuk dikaji karena dunia ketiga identik dengan profil negara-negara yang sedang bergulat dengan perjuangan melawan kemiskinan.
Kebijakan Pertanian dan Tanaman Pangan
Authors: Dewanta Awan Setya , Hamid Edy Suandi , Priyadi Unggul , Wijayanti Diana
Published: April 2022

Kebijakan pertanian pangan belum mengalami perubahan sejak masa orde lama hingga sekarang. Kebijakan pertanian pangan masih diprioritaskan pada swasembada pangan (beras). Akibatnya adalah keswasembadaan tersebut memiliki arti politis karena dilakukan dalam rangka penghematan devisa, pengadaan pangan yang murah, dan mengendalikan inflasi. Kondisi ini memberikan dampak yang kurang menguntungkan bagi petani padi yang menganggap padi merupakan komoditi ekonomi sebagaimana komoditi pertanian lainnya.Untuk tetap mengembangkan pertanian pangan, kebijakan pertanian pangan tidak dapat terlepas dari kebijakan pertanian secara keseluruhan dan kebijakan makro-ekonomi. Kebijakan makro di negara-negara berkembang terbukti mengurangi net protection yang diperoleh dari kebijakan pertanian (kebijakan langsung), dan terjadi diskriminasi kebijakan terhadap pertanian.
Prospek bisnis franchise di Indonesia
Authors: Suud Muhammad
Published: April 2022

Kentucky Fried Chicken (KFC), Mc. Donald, Pizza Hut, dan sebagainya, kini telah merambah di hampir semua kota besar. Kenyataan tersebut menunjukkan bahwa globalisasi tak terelakkan lagi. Bangsa-bangsa telah menjalin hubungan bisnis, melampaui batas-batas negara.
Perkembangan leasing di Indonesia
Authors: Meidawati Neni
Published: April 2022

Lembaga leasing di Indonesia mulai ada pada tahun 1973, yang kemudian diatur oleh pemerintah sejak tahun 1974 dan diikuti dengan peraturan-peraturan yang lain. Sehingga jelaslah bahwa perkembangan leasing di Indonesia masih sangat muda sekali, bahkan masih banyak masyarakat yang tidak mengenal istilah leasing.
Non-netralitas kebijakan moneter: Pengujian atas pandangan ekonomi makro klasik baru
Authors: Misanam Munkhorim
Published: April 2022

Rational Expectation (Ratex) Hypothesis has been widely spread, even became the foundation of Neo Classic though. But the validity of this hypothesis is still being debated. Since the hypothesis has a serious implication, in neutrality of economic policy, more investigation is important to do. This article evaluates whether the hypothesis is contextual to Indonesian economy or not. By taking note of the last development of the model and using two different money scale, i.e. Ml and M2, it finds an indication that rationality and neutrality are not shown in Indonesian economy, it means monetary policy has an effect on real variable in the economy.
Pengaruh pengelolaan data dengan komputer dalam pengawasan akuntasi
Authors: Antarwiyati Prapti
Published: April 2022

Pada prinsipnya pengolahan data dengan manual maupun dengan komputer menggunakan siklus yang sama. Pengolahan data dengan manual maupun dengan komputer terdapat beberapa hal yang memberikan kemudahan bagi perusahaan.
Pendekatan model dinamis dalam analisis ekonomi (Studi kasus permintaan uang di Indonesia 1980 I- 1991 IV)
Authors: Sriyana Jaka
Published: April 2022

Dalam dua dasa warsa terakhir ini metode analisa kuantitatif, khususnya ekonometrika telah mendapat perhatian yang cukup besar dari para peneliti dan pengamat ekonomi sebagai alat analisa untuk mengetahui perilaku variabel-variabel ekonomi di suatu negara.
Asuransi Takaful: Prospek dan tantangannya
Authors: Sobirin Achmad , Muhtar Muchsin
Published: April 2022

Dewasa ini perhatian terhadap nilai-nilai syariah Islam terhadap muamalah khususnya di bidang ekonomi menjadi besar. Lembaga perekonomian yang terjalin dengan pranata keagamaan makin menggejala dimana-mana dan kini sedang tumbuh mencari bentuk untuk dapat diterima di tengah-tengah masyarakat.
Kebijakan moneter: Teori dan bukti empiris
Authors: Sardjonopermono Iswardono
Published: April 2022

Monetary crisis accured in Indonesia has showed a serious weakness of monetary policy by Sentral Bank. As written in this paper, there are many weakness and mistakes of Sentral Bank as monetary policy maker in Indonesia.
Kontroversi subsidi BBM dalam keuangan negara: Legitimasi dari fakra empiris
Authors: Misanam Munrokhim
Published: April 2022

The debate over the importance of subsidizing fuel energy still persist in nowdays. The conventional argument against the policy argues that it puts government in a difficult financial situation. While the argument for the policy argues that it supports the economy especially of the lower-income people.
Struktur organisasi dalam manajemen modern untuk menjawab tantangan abad XXI
Authors: Adnanputra Ahmad S
Published: April 2022

Pada tahun 1970, Alvin Toffler menerbitkan karyanya yang mengesankan berjudul Future Shock. Dengan uraian yang dramatik ia mengemukakan hipotesis bahwa perubahan melanda demikian cepat hingga manusia sebagai insan dan dalam kerangka organisasiny masing-masing tak mampu menyesuaikan diri atau menghadapinya.
Mengoptimalkan peranan sektor pariwisata dalam penerimaan devisa dan sebagai instrumen mengentaskan kemiskinan
Authors: Priyadi Unggul
Published: April 2022

Dari berbagai kemajuan yang telah dicapai dalam pembangunan, salah satu di antaranya adalah peranan Deparpostel beserta instansi yang terkait dalam upaya memajukan kepariwisataan di negeri kita
Masalah kredit TRI bagi petani tebu di Kabupaten Sleman dan Kulonprogo, Daerah Istimewa Yoggayarta
Authors: UII Tim Peneliti Fakultas Ekonomi
Published: April 2022

Pada masa pemerintahan Hindia Belanda, komuditi gula merupaan satu komiditi andalan. pada masa tersebut (1863), cara bercocok tanam tebu dilakukan di lahan sawah yang subur dan beririgasi (sistem Reinosa).
Strategi pembiayaan pembangunan dan pengentasan kemiskinan
Authors: Alwi Syafaruddin
Published: April 2022

Dalam dasawarsa limapuluhan pandangan tentang ekonomi pembangunan mengikuti pemikiran Harrod dan Domar yang menggambarkan pembangunan merupakan fungsi pembentukan modal dan laju pertumbuhan. Ini berarti, proses perkembangan akan berlangsung melalui akumulasi modal dan kecepatan laju pertumbuhan.
Distribusi pendapatan dalam pembangunan
Authors: Suharto Suharto
Published: April 2022

The lameness problem of income distribution has become a debatable issue among economic soon after the emerge of new awareness about this problem in the developing countries in 1970th. A development strategy, which is oriented in the growth in fact, has caused some serious problems in the income distribution, as well as the damage of environment.
Beberapa isu dalam pembangunan di sektor energi
Authors: Mansoer Faried W , Anto MB Hendrie
Published: April 2022

Selama 50 tahun kemerdekaannya secara umum pembangunan ekonomi Indonesia telah banyak menghasilkan perbaikan kesejahteraan rakyat, meskipun masih terdapat banyak kelemahan pula. Jika disederhanakan maka pembangunan ekonomi Indonesia pada pokoknya bertumpu pada tiga hal, yaitu:Penyediaan dan pengembangan sumber daya manusia dilakukan pemerintah dengan pembangunan di sektor pendidikan, baik formal maupun informal.
Silent Antibodies Start Talking: Enhanced Lateral Flow Serodiagnosis with Two-Stage Incorporation of Labels into Immune Complexes
Authors: Sotnikov Dmitriy V. , Byzova Nadezhda A. , Zherdev Anatoly V. , Xu Youchun , Dzantiev Boris B.
Published: April 2022

Nowadays, the presence of pathogen-specific antibodies in the blood is widely controlled by a serodiagnostic technique based on the lateral flow immunoassay (LFIA). However, its common one-stage format with an antigen immobilized in the binding zone of a test strip and a nanodis-persed label conjugated with immunoglobulin-binding proteins is associated with risks of very low analytical signals. It is caused by the presence of non-specific immunoglobulins in very large excess to the target antibodies in the tested samples thus decreasing their binding with the detected labels. In this study, the first stage of the immunochromatographic serodiagnosis was carried out in its traditional format using a conjugate of gold nanoparticles with staphylococcal immunoglobulin-binding protein A and an antigen immobilized on a working membrane. At the second stage, a labeled immunoglobulin-binding protein was added, which enhanced the coloration of the bound immune complexes. The use of two separated steps, binding of specific antibodies, and further coloration of the formed complexes allowed a significant reducing the influence of non-specific immunoglobulins on the assay results. The proposed approach was ap-plied for the serodiagnosis using a recombinant RBD protein of SARS-CoV-2. As a result, an in-crease in the intensity of test zone coloration by more than two orders of magnitude was demonstrated, which enabled to significantly reduce false-negative results. When testing a panel of 16 positive and 8 negative serum samples, the diagnostic sensitivity of the LFIA was 62.5% for the common format and 100% for the enhanced format; the diagnostic specificity of both variants was 100%.