bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors Contributing to Work Stress among Nurses in Hadiya Zone’s Public Hospitals, Central Ethiopia
Authors: Heliso Asnakech Zekiwos , Babore Getachaw Ossabo , Ashine Taye Mezgebu
Published: July 2024

Background: Stress in nurses refers to the reactions nurses experience when faced with work demands that exceed their knowledge, skills, or ability to cope. Nursing, as a profession, is particularly susceptible to work-related stress.
Methods: A cross-sectional study was conducted among 405 randomly selected nurses working in Hadiya Zone public hospitals from March 1 to 30, 2023. Data were collected using a pre-tested self-administered questionnaire. The data were entered using Epi-data version 3.1, and analysed using SPSS version 20.0. Multivariable logistic regression analysis was performed to identify factors associated with the level of work stress. Variables with a p-value <0.05 were considered statistically significant.
Results: In this study, 56% (95% CI 50.9-61.2) of the participants reported being stressed in their work. Several factors were found to be associated with work stress, including being female (AOR=1.94, 95% CI 1.19-3.16), rotating shifts (AOR=2.06, 95% CI 1.31-3.25), working in the intensive care unit (AOR=3.42, 95% CI 1.20-9.73), and having post-basic training (AOR=0.55, 95% CI 0.34-0.92).
Conclusion: The study revealed a high level of work stress among nurses in the study area. The zonal health unit takes measures to address work stress by providing job orientation during the hiring process, rotation, and on-the-job training to help nurses cope with and manage stressful events. Stress in public hospitals and among nurses is an important issue that needs urgent attention.
The Borax Analysis Of The Crackers At Blauran Market, Salatiga City
Authors: Palimbong Sarlina , Sihombing Monang , Mulyanto Milka Meliana
Published: July 2024

Penyalahgunaan bahan kimia seperti boraks, sebagai bahan tambahan dalam pangan masih sering terjadi. Penyalahgunaan ini dimaksudkan untuk meningkatkan kekenyalan dan kerenyahan lebih lama pada produk pangan meskipun penggunaan boraks dilarang pada industri pangan. Beberapa produk pangan di pasaran yang kerap dijumpai mengandung boraks adalah tahu, bakso, mie, dan kerupuk. Studi penelitian dan media massa pada beberapa pasar tradisional di Indonesia telah membuktikan dan memverifikasi adanya boraks pada kerupuk. Berdasarkan hal ini kemudian ingin diketahui apakah terdapat hal sama pada distribusi kerupuk di Pasar Blauran, Kota Salatiga. Oleh karena itu, tujuan penelitian ini adalah untuk mengetahui secara kuantitatif status boraks dalam kerupuk yang dijual di Pasar Blauran, Kota Salatiga tahun 2023. Metode penelitian deskriptif kuantitatif. Pengambilan sampel menggunakan metode purposive sampling. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap Faktorial. Faktor pertama adalah jenis kerupuk, terdiri dari empat taraf: kerupuk gendar merk X, kerupuk gendar merk Y,  kerupuk terung putih merk X, dan kerupuk terung putih merk Y. Faktor kedua adalah lama perendaman, terdiri dari dua taraf: 10 menit, dan 30 menit. Setiap kombinasi perlakuan dilakukan ulangan sebanyak tiga kali sehingga diperoleh 24 unit percobaan. Uji kuantitatif sampel menggunakan spektrofotometer UV-VIS. Olah data menggunakan Anova two-factor with replication. Hasil uji menunjukkan bahwa keempat merk sampel kerupuk mengandung boraks >100 ppm. Kandungan boraks tertinggi yaitu pada kerupuk terung putih X perendaman 30 menit (731,974 ppm) dan terendah pada kerupuk terung putih Y perendaman 10 menit (118,055 ppm).
Peranan Sektor Industri Pengolahan dalam Perekonomian Nusa Tenggara Timur
Authors: Koylal Johny Agustinus , Kuang Stefanus M. , Abineno Jemseng C.
Published: July 2024

Keselarasan pertumbuhan ekonomi antara sektor industri pengolahan dengan sektor pertanian dalam perekonomian akan mendorong transfer tenaga kerja yang surplus di sektor pertanian ke sektor industri pengolahan. Selanjutnya, kondisi tersebut akan berdampak terhadap peningkatan marginal produktivitas tenaga kerja dan pendapatan di sektor pertanian serta permintaan terhadap produk industri pengolahan. Penelitian ini mengkaji struktur permintaan dan penawaran, output, nilai tambah bruto, dan permintaan akhir sektor industri pengolahan dalam perekonomian Nusa Tenggara Timur. Penelitian dilakukan pada April sampai dengan Oktober tahun 2023. Metode analisis yang digunakan adalah analisis kuantitatif pada Tabel Input-Output Nusa Tenggara Timur tahun 2020 yang disusun dari pembaruan Tabel Input-Output Nusa Tenggara Timur tahun 2017. Hasil analisis menunjukkan bahwa berdasarkan output dan nilai tambah bruto yang dihasilkan dalam perekonomian, maka sektor industri makanan dan minuman dapat dikategorikan sebagai sektor industri pengolahan unggulan. Sektor industri pengolahan menggunakan input yang sebagian besar berasal dari produksi dalam wilayah dan permintaan akhir sektor tersebut sebagian besar digunakan untuk konsumsi rumah tangga. Pengambil kebijakan perlu untuk melakukan prioritas pengembangan terhadap sektor industri pengolahan unggulan yaitu sektor industri makanan dan minuman yang berbasis input domestik terutama input yang berasal dari sektor pertanian untuk meningkatkan daya saing dan mampu memenuhi permintaan antara oleh sektor ekonomi lainnya dan kebutuhan ekspor. Disamping itu, perlu juga dilakukan peningkatan profitabilitas, produktivitas, dan pertumbuhan output sektor industri makanan dan minuman untuk meningkatkan daya saingnya dan iklim investasi yang lebih kondusif karena peluang investasi ke depan masih cukup besar.
Kata Kunci: input-output, industri makanan dan minuman
Organic Waste Processing as Organic Fertilizer and Social Investment Impact of Community Development Program on Prabumulih Waste Bank
Authors: Aryani Desi , Arissethyadi Iwan , Rustam Yanet
Published: July 2024

The Mobile Waste Bank Program is one of the PT PLN (Persero) UID S2JB TJSL Program’sas an effort to empower and develop community potential, so that there is an increasedincome through productive activities, along utilizing existing resources to makeeconomically valuable and beneficial to the community. The objectives of this article are to:describes the processing of organic waste into compost and ecoenzymes; and analyze theimpact of social investment resulting from the Prabumulih City Mobile Waste Bank programfunded by the PT PLN (Persero) UID S2JB TJSL Program. The research used wasqualitative and quantitative research method. The sampling method in this study was apurposive sampling technique which was carried out on 15 resource persons. All the stagesthat must be passed in this research refer to the six phases of the SRoI analysis study methodin the guidelines issued by the Social Value UK organization, namely: establishing scopeand identifying key stakeholders; mapping outcomes; evidencing outcomes and giving thema value; establishing impact; calculating the SRoI; reporting, using and embedding. Theresults of organic waste processing at BSP are compost and ecoenzymes as an organicfertilizer. Ecoenzyme is also used as ingredients for making environmentally friendlycleaning products such as dishwashing liquid, hand washing, and bodywash. Based on theresults of the SRoI analysis of the Mobile Waste Bank Program in the Prabu Ijo CommunityGroup in Prabumulih City, it shows that the program is worthy to implement. The results ofSRoI analysis provide value of 1.12. The investment input value is IDR 506,000,000, for oneyear calculation has produced a social benefit achievement value that is equivalent of IDR568,538,142 financial value. It is necessary to increase the portion of impact that is greaterrelated to economic activities and business development impact.
Optimasi Minyak Daging Buah Pala dengan Response Surface Methodology (RSM)
Authors: Nirmagusitna Dwi Eva , Putri Andini Mutia Merry , Wulandari Yeni Ria
Published: July 2024

Daging buah pala merupakan bagian terbesar buah pala (77,8%) dan dapat dimanfaatkan untuk menghasilkan minyak daging buah pala. Tujuan penelitian adalah menentukan suhu dan waktu destilasi yang tepat untuk menghasilkan rendemen minyak daging buah pala yang optimal, menetukan variasi suhu dan waktu destilasi berdasarkan Response Surface Methodology (RSM) dengan persentase rendemen minyak daging buah pala yang optimal dan memenuhi SNI minyak pala serta menentukan kandungan senyawa kimia dominan dalam minyak daging buah pala. Penelitian dilakukan dua tahap. Tahap pertama, yaitu optimasi proses destilasi menggunakan RSM dengan desain Central Composite Design (CCD). Tahap kedua, yaitu pembuatan minyak daging buah pala. Minyak daging buah pala terbaik adalah minyak daging buah pala dengan suhu dan waktu destilasi (95ºC, 4,5 jam) dengan rendemen (0,73%), berat jenis (0,91 g/ml), indeks bias (1,4932), dan kelarutan dalam etanol 90% (20,00%). Hasil Analisa GC-MS minyak daging buah pala menunjukkan kadar myristicin, yaitu 35,30% dan memenuhi SNI. Variasi suhu dan waktu destilasi yang disarankan Design CCD, yaitu 95ºC selama 5,5 jam dengan hasil, yaitu rendemen (0,71%), berat jenis (0,882 g/ml), indeks bias (1,485), dan nkelarutan dalam etanol 90% (16,67%). Hasil analisa yang didapatkan tersebut memenuhi standar mutu SNI minyak pala (SNI 06-2388-2006).
Aspectos epidemiológicos, fisiopatológicos, clínicos e capacidade funcional de pacientes pós-covid-19
Authors: Silveira Matheus Sobral , Neves Victor Ribeiro , Ferreira Ádrya Aryelle , Roriz Pedro Igor Lustosa , Skrapec Michele Vantini Checchio , Sotero Andréa Marques , Viana Kéllen Wanessa Coutinho , Gois Amanda Regina da Silva , Silva Diego Felipe dos Santos , Schwingel Paulo Adriano
Published: July 2024

Objetivo: Descrever os aspectos epidemiológicos, fisiopatológicos, clínicos e capacidade funcional de pacientes pós-COVID-19. Revisão Bibliográfica: A literatura reporta a evidência da persistência global de sintomas pós-COVID-19, onde, de 10 e 20% dos pacientes que tiveram COVID-19 agudo sintomático evoluíram para fase de persistência de manifestações clínicas, dentre elas; fadiga, dispneia, dor torácica, arritmias, taquicardias, disfunção autonômica, ansiedade e depressão, ainda que pouco esclarecida os meios fisiopatológicos. Nota-se que a avaliação da capacidade funcional (CF) nestes pacientes é crucial devido às frequentes sequelas que impactam as atividades diárias, prejudicando a qualidade de vida (QV). Além de informar sobre tratamentos e intervenções de reabilitação, a avaliação da CF auxilia a identificar pacientes que podem necessitar de apoio a longo prazo, contribuindo para uma recuperação eficaz e aprimoramento da QV pós-infecção pela COVID-19. Considerações finais: a interação complexa entre respostas imunológicas e efeitos diretos do vírus resulta em sintomas persistentes, destacando a necessidade de compreensão clínica e avaliação da CF para assim, orientar estratégias de reabilitação e suporte em pacientes pós-COVID-19.
Improvement of Vestibular Neuritis in a Patient with Psoriatic Arthritis following Ixekizumab Administration
Authors: Ershadi Sherry , Amara Shivkar , Lebwohl Mark
Published: July 2024

Psoriatic arthritis (PsA) is a chronic inflammatory condition commonly affecting peripheral joints and the skin. Recent studies have shown an association between PsA and vestibulocochlear dysfunction. Here, we present the case of a 43 year-old male with a history of controlled psoriasis (Pso) and PsA who presented with sudden-onset severe vertigo, nausea, and vomiting. Diagnostic evaluation ruled out a central etiology, leading to a diagnosis of vestibular neuritis of unknown origin. Despite minimal improvement with conventional medications, the patient experienced significant relief from vertigo symptoms following treatment with ixekizumab, an IL-17 inhibitor used to manage his PsA and Pso. This case highlights a potential therapeutic effect of biological agents on vestibular dysfunction associated with PsA. Future research in this area may provide insights into novel treatment strategies for vestibular symptoms in patients with PsA.
A Case of Nevoid Hyperkeratosis of the Nipple in a Male Bahraini Patient
Authors: Dirr McKenzie A. , Alkhanaizi Sara , Khamdan Fatema
Published: July 2024

Hyperkeratosis of the nipple/areola (HNA) is a wart-like thickening of the nipple and/or areola with concomitant hyperpigmentation. It can be further classified into groups based on etiology. Nevoid (NHNA) is a rare subtype with an unknown cause. It is a benign, idiopathic condition, which typically presents bilaterally in females or in times of hormonal changes. We present a case of a 51-year-old Bahraini male who presented with skin changes of the nipple  and was ultimately found to have NHNA.
Use of Upadacitinib to Treat Atopic Dermatitis Refractory to Dupilumab in Elderly Patients
Authors: Hren Mary , Khattri Saakshi
Published: July 2024

Atopic dermatitis (AD) is a relapsing and remitting inflammatory skin disease that can significantly impair an individual’s quality of life. Elderly-onset AD is increasing in prevalence in developed countries, likely due to aging populations. When disease is refractory to both topical steroids and dupilumab (a systemic IL-4R α inhibitor), there remains a lack of guidelines for treatment in elderly populations. Herein, we describe the treatment of five elderly patients (≥ 65-years-old) with upadacitinib, a novel JAK-inhibitor that is rarely used in elderly patients due to the elevated risk of systemic side effects. In this report, we found that upadacitinib successfully treated these patients’ atopic dermatitis, with minimal adverse effects. Presently, all five patients continue with this treatment.
Erythema Elevatum Diutinum in Association with IgA Monoclonal Gammopathy of Undetermined Significance
Authors: De Jong Katherine , Shalabi Mojahed , Schaefer Dale
Published: July 2024

Erythema Elevatum Diutinum (EED) is a distinctive form of chronic leukocytoclastic vasculitis characterized by red to brown papules, plaques, and nodules that favor the extensor aspect of the extremities. EED is a benign condition but may be associated with several systemic diseases, including hematologic disorders, infections, and autoimmune conditions. EED is a rare entity of vasculitis, with less than 400 cases being reported in world literature to date. We present a rare case of a 61-year-old male with IgA monoclonal gammopathy of undetermined significance (MGUS) and a 17-year history of EED that improved significantly with dapsone treatment.
Review of Tumor Margins for Lentigo Maligna with Staged Surgical Excision and Permanent Section en face Processing
Authors: Adkison Michael , Armenta Andrew , Winsett Frank , Wagner Richard
Published: July 2024

Background: The optimal surgical margins required for the excision of lentigo maligna remains a topic of debate. Recent literature suggests that wider margins are warranted.
Objective: Comparison of lentigo maligna margin sizes and clearance rates from a single center to existing literature.
Methods: A retrospective analysis of primary and recurrent lentigo maligna treated by staged excision with complete circumferential and deep margin assessment between 2011 and 2023 at a single institution was conducted. The percentage of tumors with clear margins after the initial excision with 5 mm margins was determined.
Results: A total of 65 tumors were identified. Fifty-eight patients (89.2%) had clear margins after initial excision with 5 mm margins. 
Conclusions: This study reports a higher percentage of lentigo maligna clearance following the initial staged excision with 5 mm margins than reports in the literature. These differences may be attributed to variations in section processing, staining techniques, and factors associated with differences in subclinical spread.
Deucravacitinib Long-Term Efficacy Through 4 years in Week 16 Placebo Crossover Patients in the Phase 3 POETYK PSO-1, PSO-2, and LTE Program
Authors: Lebwohl Mark , Warren Richard B. , Imafuku Shinichi , Bagel Jerry , Armstrong April W. , Passeron Thierry , Banerjee Subhashis , Colombo Matthew J. , Scharnitz Thomas , Hoyt Kim , Thaci Diamant , Blauvelt Andrew
Published: July 2024

Introduction: Deucravacitinib, an oral, selective, allosteric tyrosine kinase 2 inhibitor, is approved in the US, EU, and other countries for treatment of adults with moderate to severe plaque psoriasis who are candidates for systemic therapy. Deucravacitinib was efficacious and well tolerated in two global, 52-week, phase 3 POETYK PSO-1 (NCT03624127) and POETYK PSO-2 (NCT03611751) parent trials, and through 2 additional years in the POETYK long-term extension (LTE) (NCT04036435) trial in patients treated with deucravacitinib from Day 1 of PSO-1/PSO-2. Here, long-term efficacy was assessed through 4 years in patients who crossed over from placebo to deucravacitinib at Week 16 in PSO-1 or PSO-2 and entered the LTE trial.
Methods: PSO-1 and PSO-2 randomized patients 1:2:1 to oral placebo, deucravacitinib 6 mg once daily, or apremilast 30 mg twice daily. At Week 16, patients randomized to placebo crossed over to deucravacitinib. At Week 52, patients could enroll in the LTE and receive open-label deucravacitinib. Efficacy was evaluated in patients who crossed over from placebo to deucravacitinib at Week 16 of the parent trial and received continuous deucravacitinib through 4 years (Week 208; data cutoff, November 1, 2023). Outcomes included ≥75%/≥90% reduction from baseline in Psoriasis Area and Severity Index (PASI 75/90) and static Physician Global Assessment score of 0 (clear) or 1 (almost clear) (sPGA 0/1). Efficacy is reported using modified nonresponder imputation (mNRI) in patients who reached the Week 208 assessment or discontinued before Week 208.
Results: Of 421 patients originally randomized to placebo, 348 crossed over to deucravacitinib at Week 16; 298 completed the parent trials and entered the LTE, with 291 meeting mNRI criteria. Efficacy response rates improved from Week 16 on placebo (PASI 75, 12.0% [95% CI, 8.5%-16.3%]; PASI 90, 3.4% [1.7%-6.2%]; sPGA 0/1, 10.0% [6.8%-14.0%]) through Week 52 on deucravacitinib (PASI 75, 75.2% [70.2%-80.2%]; PASI 90, 47.4% [41.6%-53.1%]; sPGA 0/1, 60.1% [54.5%-65.7%]). Response rates were maintained well through Week 208 (PASI 75, 75.6% [70.0%-81.2%]; PASI 90, 46.6% [40.4%-52.7%]; sPGA 0/1, 55.1% [48.8%-61.4%]).
Conclusion: These findings support the long-term efficacy profile of once-daily oral deucravacitinib for treatment of patients with moderate to severe plaque psoriasis.
Rosacea awareness among med students: In-depth survey analysis
Authors: Fathima Yusra , Karawita Janadi Ashinshani , Koshy Rowyna Reji , Aji Aarsha , Korrapati Naga Harika , Sarvaiya Krishna
Published: July 2024

Objectives:

The main aim of this cross-sectional study is to assess the knowledge of medical students of Tbilisi State Medical University for creating awareness about rosacea among healthcare professionals and the community.

Materials and Methods:

A cross-sectional study in an online survey style was conducted over 2 months among international medical students to assess rosacea awareness. Participants (n = 86) answered questions covering etiology, epidemiology, pathophysiology, clinical expression, treatment modalities, and personal encounters with rosacea patients. Statistical analysis categorized responses by gender, academic year, and awareness levels.

Results:

Survey results revealed varying awareness levels among participants. While most recognized rosacea and its symptoms exist, knowledge gaps exist in identifying types, severity signs, genetic links, dietary influences, and treatment modalities. Clinical-year students exhibited superior awareness compared to their preclinical counterparts, indicating the influence of clinical exposure.

Conclusion:

The study highlights inconsistent awareness of rosacea among medical students, emphasizing the need for comprehensive education. Limited exposure to real-world cases underscores the importance of clinical training. Bridging knowledge gaps through updated curricula and practical training can enhance future health-care professionals’ preparedness to diagnose and manage rosacea effectively, thereby improving patient outcomes and quality of life. Further, research and educational interventions are warranted to address these gaps and promote a better understanding of and management of rosacea.
A LABORATORY SETUP FOR INVESTIGATION OF FREE THERMAL CONVECTION FLOWS IN WATER FILLED BOREHOLE: FIRST RESULTS
Authors: Миндубаев М.Г. , Демежко Д.Ю. , Хацкевич Б.Д.
Published: July 2024

Разработан экспериментальный лабораторный метод изучения структуры течений свободной тепловой конвекции в условиях, приближенных к скважинным. Он основан на инфракрасной визуализации температурных аномалий, возникающих на внешних стенках вертикальной водонаполненной керамической трубы, в которой поддерживаются условия конвекции. Температурный градиент на внешних стенках трубы создается восходящим потоком воздуха от тороидального нагревателя. Проведенные эксперименты впервые показали, что при небольших закритичностях (Ra = 294–516) течения СТК представляют собой систему, состоящую из 2–4-х винтовых струй, вращающихся вокруг вертикальной оси.

An experimental laboratory method for studying the structure of the free thermal convection flows in conditions approached to the borehole’s one has been developed. The methods based on infrared imaging of temperature anomalies appearing on the outer walls of the vertical water-filled ceramic pipes, where conditions free thermal convection are maintained. Upward flow of air from the toroidal heater produces temperature gradient on the outer wall of the pipe. The experiments have shown that when the critical Rayleigh number is slightly exceeded (Ra = 294–516), the flows of thermal convection constitute a system consisting of 2–4 spiral jets, rotating around the vertical axis.
ON THE PROBLEM OF CONSTRUCTION OF MEDIUM-SCALE DENSITY MODELS FOR THE SPHEROIDAL EARTH
Authors: Бызов Д.Д. , Черноскутов А.И. , Ладовский И.В.
Published: July 2024

Предложен способ преобразования трехмерного каркаса плотностной модели из сфероидальной геометрии в прямоугольную и наоборот. Представлены алгоритмы вычисления нормальной компоненты гравитационного поля для трехмерных моделей в различных системах координат. Сопоставлены гравитационные аномалии от тел, рассчитанных в геоцентрической сферической (или географической) системе координат, с подобными же аномалиями от преобразованных масс, но вычисленными в прямоугольной системе декартовых координат. Выполнены оценки погрешности вычисления модельного гравитационного поля за кривизну земной поверхности в пределах одной шестиградусной зоны картографической проекции Гаусса-Крюгера.

A method for transforming the three-dimensional framework from spheroidal geometry to rectangular geometry is proposed. Algorithms for calculating the normal component of the gravitational field for three-dimensional models in different coordinate systems are presented. Correlations of gravitational anomalies from bodies calculated in a geocentric spherical (or geographic) coordinate system, with similar anomalies from the transformed masses, but calculated in a rectangular system of Cartesian coordinates. Estimates of the error in calculating the model gravitational field for the curvature of the earth's surface within a six-degree region of the Gauss-Krueger cartographic projection are estimated.
THE RESULTS OF COMPLEXING OF GROUND GEOPHYSICAL METHODS AT THE NORTH-TARATASHSKIY AREA
Authors: Антипин А.Н. , Баженова Е.А. , Вдовин А.Г. , Федосов М.А. , Хацкевич Б.Д.
Published: July 2024

Выполнен комплекс наземных геофизических исследований на Северо-Тараташском участке, включающий площадную магнитометрическую съемку, пешеходную гамма-съемку и эманационную съемку. По результатам исследований были построены карты аномального магнитного поля (ΔТа) и мощности экспозиционной дозы (МЭД), а также графики объемной активности радона. По результатам интерпретации данных комплекса геофизических исследований были уточнены местоположения тектонических нарушений (надвиговая структура и разлом), а также сделан вывод о продолжении разлома за линию надвига.

The complex of surface geophysical methods was carried out in the North Taratashsky area including area magnetometric survey, pedestrian gamma survey and emanation survey. Based on the results of the research, maps of anomalous magnetic field (ΔTa) and exposure dose rate (EDR) were constructed, as well as graphs of volumetric activity of radon. According to the results of data interpretation of geophysical research locations of tectonic violations have been clarified (overthrusts and fault) and also concluded that the continuation of the fault beyond the overthrust line.
DEVELOPMENT OF THE PROCESS OF DESTRUCTION OF THE GRANITE SAMPLE DURING SLOW LOAD CHANGE
Authors: Беликов В.Т. , Козлова И.А. , Рывкин Д.Г. , Юрков А.К.
Published: July 2024

В процессе одноосного нагружения образца гранита проведены наблюдения сигналов акустической эмиссии и временных вариаций объемной активности радона. Количественная интерпретация полученных данных позволила исследовать временные изменения структурных характеристик образца, а также особенности развития процесса его разрушения.

We have experimentally investigated the changes of acoustic emission characteristics and the emission of radon from a sample of granite during its uniaxial compression. The quantitative interpretation of the obtained data made it possible to study the temporal changes in the structural characteristics of the sample, as well as the features of the process of its destruction development.
FEATURES OF RADON EXTRACTION FROM ROCK SAMPLES DURING REHEATING
Authors: Юрков А.К. , Козлова И.А. , Бирюлин С.В.
Published: July 2024

Исследуется сорбционная способность образцов горных пород при их нагревании. Приведены экспериментальные результаты последовательных циклов измерения объемной активности радона-222 в образцах глины и гранитного отсева при изменении их температуры до 300 ºС. Подтверждена возможная адсорбция радона на свободные поверхности трещинно-порового пространства образцов горных пород.

The sorption capacity of rock samples under heating is investigated. Experimental results of successive cycles of measurement of volumetric activity of radon-222 in samples of clay and granite dropout are shown when their temperature is changed to 300 ºС. The possible adsorption of radon to the free surfaces of the fissured-porous space of rock samples has been confirmed.
THE INFLUENCE OF PHASE TRANSITIONS ON THE GEOTHERMAL RECONTRUCTION OF PLEISTOCENE/HOLOCENE WARMING
Authors: Антипин А.Н. , Демежко Д.Ю. , Горностаева А.А.
Published: July 2024

Исследовано влияние фазовых переходов «лед/вода» на результаты долговременных реконструкций температурных историй земной поверхности по данным скважинной термометрии. Показано, что при отсутствии учета фазовых переходов в первую очередь искажается хронология событий – дата плейстоцен/голоценового потепления смещается в более поздние времена. Величина искажения тем значительнее, чем меньше плотность геотермического теплового потока и больше содержание льда в порах. При большом содержании льда (>10%) и низкой плотности геотермического теплового потоке (<30 мВт/м2) искажается и форма температурной истории – фронт потепления становится менее резким, «заваливается». Амплитуда температурных колебаний прошлого искажается незначительно.

The influence of ice/water phase transitions on the results of long-term ground surface temperature history reconstructions from borehole thermometry is studied. It is shown that if the phase transitions are not taken into account, the chronology of events is primarily distorted: the Pleistocene/Holocene warming date shifts to a later time. The smaller the geothermal heat flux and the greater the ice content in pores, the greater the time shift. Under a high ice content (>10%) and a low geothermal flow (<30 mW/m2), the shape of temperature history is also distorted. Namely, the warming front becomes less sharp, "smoothed out". The amplitude of temperature fluctuations in the past is distorted insignificantly.
THE MICROMAGNETIC SURVEY OF THE BRONZE AGE ARCHAEOLOGICAL SETTLEMENT LEVOBEREZHNOE (SINTASHTA II) ON SOUTH URALS
Authors: Носкевич В.В. , Угрюмов И.А. , Петров Ф.Н. , Батанина Н.С.
Published: July 2024

На Южном Урале проведена микромагнитная съемка уцелевшей части укрепленного поселения бронзового века. Получены магнитные карты городища. По картам уверенно определяются положения остатков внешних валов, рвов, оборонительных стен. Результаты использовались для реконструкции внутренних интерьеров поселения. Данные магнитной съемки были значительно «зашумлены» аномалиями от приповерхностных источников.

In the Southern Urals, a micromagnetic survey of an undamaged part of a fortified Bronze Age settlement was carried out. Magnetic maps of the settlement are obtained. The positions of the remains of external shafts, ditches, defensive walls are determined by maps. The results were used to reconstruct the interior of the settlement. The magnetic survey data were significantly "noisy" by anomalies from nearsurface sources.
THE AUTOMATIC SYSTEM TOREGISTRATIONS AND LICATION TO TERRIAN GEOPHISICAL DATA
Authors: Угрюмов И.А.
Published: July 2024

В статье рассматривается вопрос повышения эффективности геофизических методов путем автоматизации процесса измерений. Предложена структурная схема автоматизированного комплекса для сбора геофизической информации для методов магнитометрии, электрометрии, поля естественной радиоактивности, приведены данные опытных работ на инженерно-геологических и археологических объектах.

In article is considered question of increasing to efficiency of the geophisical methods by way to automations of the process of the measurements. Is given proposal structured scheme of the automatic complex for collection of geophisical information for magnetic methods, the electric methods, field to natural radioactivity. Experienced work are shown on engineering-geological and archeological object.
ON SOLUTION OF INVERSE GRAVITY PROBLEM USING CONJUGATE GRADIENT METHOD WITH SPECIFIC OPTIMIZATION CONDITIONS
Authors: Мартышко П.С. , Бызов Д.Д. , Черноскутов А.И.
Published: July 2024

В работе рассматривается применение метода сопряженных градиентов для решения обратной линейной задачи гравиметрии. Предложен способ введения целевого функционала, минимизация которого (при наложенных ограничениях на искомое решение) позволяет сузить множество допустимых решений. Введенные ограничения отвечают априорной информации о распределении плотности, а также имеют малое количество «свободных» или «настроечных» параметров. Предложенные алгоритмы могут быть эффективно реализованы, с точки зрения вычислительных ресурсов, при использовании современных технологий распараллеливания (что было достигнуто авторами). Приведенные численные эксперименты проводились для реального участка земной коры с измеренным гравитационным полем.

Application of the conjugate gradient method for solving inverse linear gravimetric problem is considered. A method of introducing a special cost function is proposed. Minimization of the said function (under constraints imposed on the solution) makes it possible to narrow down the set of feasible solutions. The introduced restrictions correspond to a priori information on the density distribution, and have a small number of "free" or "tuning" parameters. The proposed algorithm can be effectively implemented, with respect to the computing resources, using modern parallelization technologies (that has been done by the authors). A number of numerical experiments have been carried out for real measured gravity field of the Earth's crust part.
INFLUENCE OF HORIZONTAL BEDDINGS AT INDUCTION LOGGING FROM THE SURROUNDED WELLS
Authors: Ратушняк А.Н. , Байдиков С.В. , Теплухин В.К.
Published: July 2024

Исследовано влияние пересекаемых скважиной горизонтальных пластов различного удельного электрического сопротивления при проведении индукционного каротажа из обсаженных геологоразведочных скважин при гармонических и импульсных зондированиях с помощью компенсационной установки. Показана информативность измеряемых величин осевой составляющей магнитной индукции и ЭДС спада при определении контакта сред с различными удельными электрическими сопротивлениями сред в условиях скомпенсированного влияния проводящей обсадной колонны. 

Influence of the horizontal layers of various specific electric resistance crossed by the well when carrying out induction logging from the surrounded prospecting wells at harmonious and pulse soundings by means of compensation installation is investigated. The informational content of the measured sizes of an axial component of magnetic induction and EMF of recession when determining contact of environments with various specific electric resistance of environments in the conditions of the compensated influence of the carrying-out upsetting column is shown.
GEOACOUSTIC NOISE AS INDICATORS OF CHARACTER OF SATURATION OF LAYERS-COLLECTORS
Authors: Троянов А.К. , Иголкина Г.В. , Астраханцев Ю.Г. , Начапкин Н.И. , Баженова Е.А.
Published: July 2024

Экспериментально установлено, что по отношению амплитуд высокочастотных и низкочастотных спектров сигналов естественных геоакустических шумов в скважинах, не вскрытых перфорацией, выделяются пласты-коллекторы, насыщенные нефтью, газом или водой.

It was established experimentally that the relative amplitudes of the high and low frequency spectra of signals geoacoustic natural noise in wells not exposed perforation seams-collectors are allocated, saturated with oil, gas or water.
EXPERIMENTAL STUDY OF ABSORPTION OF TRITIS BY HUMUS ACIDS
Authors: Чеботина М.Я. , Гусева В.П. , Поляков Е.В.
Published: July 2024

В задачу исследований входило изучение сорбции трития гуминовой кислотой из водного раствора при разной ее концентрации и продолжительности эксперимента, а также поглощение этого радионуклида двумя типами органического грунта в зависимости от температуры водной среды. Установлено, что коэффициент распределения трития между гуминовой кислотой и водой снижается с увеличением концентрации гуминовой кислоты в растворе и продолжительности эксперимента. В условиях опыта при концентрации кислоты 0,18 мг/мл и длительности эксперимента 100 суток в состав гуминовой кислоты вошло ~20% трития от его исходного содержания в воде. Показано, что гуминовая кислота накапливает тритий из воды с коэффициентом распределения < 1, что свидетельствует о наличии изотопного эффекта при связывании кислотой трития и протия. На примере двух органических грунтов водоема-охладителя Белоярской АЭС обсуждаются данные о вертикальной миграции трития в зависимости от температуры водной среды и времени взаимодействия. Показано, что примерно 10% радионуклида входит в состав гумусовых веществ грунта, остальная часть перемещается в грунте в составе капиллярной и адсорбированной форм влаги.

The research task was to study the sorption of tritium by humic acid from an aqueous solution at different concentration and duration of the experiment, as well as the absorption of this radionuclide by two types of organic soil, depending on the temperature of the aquatic environment. It is established that the distribution coefficient of tritium between humic acid and water decreases with an increase in the concentration of humic acid in the solution and the duration of the experiment. Under the experimental conditions, with an acid concentration of 0.18 mg / ml and an experiment duration of 100 days, ~20% of tritium entered into the humic acid composition from its initial content in water. It is shown that humic acid accumulates tritium from water with a distribution coefficient <1, which indicates the presence of an isotopic effect when tritium and protium are coupled with acid. On the example of two organic soils of the reservoir-cooler of the Beloyarsk NPP, data on the vertical migration of tritium are discussed, depending on the temperature of the water environment and the interaction time. It is shown that about 10% of the radionuclide is a part of the humus substances of the soil, the rest is moved in the soil as a part of the capillary and adsorbed forms of moisture.
DIGITAL THREE-COMPONENT MAGNETOMETER FOR UNMANNED FLYING MACHINES
Authors: Угрюмов И.А. , Астраханцев Ю.Г.
Published: July 2024

В статье рассмотрены вопросы и методы их решения, возникающие при разработке трехкомпонентного магнитометра для беспилотных летательных аппаратов на основе жесткозакрепленных феррозондов и гравитационных акселерометров (БПЛА). Рассмотрены пути повышения быстродействия магнитометра. Отличительной особенностью данного прибора является применение гироскопических преобразователей, позволяющих повысить точность определения ориентации магнитометра

In article are considered questions and methods of their decision appearing at development of three-component magnetometer for unmanned flying machines on the basis of fluxgate justcocaine and gravitate accelerometers. The determined ways of increasing of the speed magnetometer. The Discriminating particularity given instrument is an using gyroscopic converters, allowing raise accuracy of the determination to orientation magnetometer.
COMPARATIVE STUDY OF ELECTRICAL PARAMETERS OF GRANITE SAMPLES FROM QUIET AREAS AND AREAS WITH HIGH SEISMIC ACTIVITY
Authors: Бахтерев В.В.
Published: July 2024

Приведены результаты исследования электрических параметров образцов гранитов из двух районов, отличающихся друг от друга различной сейсмичностью (Шарташский гранитный массив – Средний Урал, Курдайский массив – Тянь-Шань). Получены и сопоставлены температурные (в интервале 20–800 °C) зависимости электрического сопротивления на постоянном токе, активного сопротивления и диэлектрических потерь на переменном токе (частотой 1кГц) образцов гранитов близкого минерального состава из двух районов, отличающихся друг от друга различной сейсмичностью. Приведены связи между активным сопротивлением и диэлектрическими потерями в частотном диапазоне 0,02–100 кГц при нормальной температуре образцов гранитов двух районов. Установлено, граниты из сейсмоактивного района имеют значительно меньшие значения электрического сопротивления, чем их аналоги из «слабоактивных» областей. Что, вероятно, связано с протекающими в недрах физико-химическими процессами. 

The results of the study of electrical parameters of granite samples from two regions are presented (Shartash granite massif-Middle Urals; Kurdish massif-Tien-Shan). The level of seismicity of the different. Temperature (in the range of 20–800 °C) dependences of electric resistance at a constant current, active resistance and dielectric losses at an alternating current (frequency 1 kHz) of samples of granites of close mineral composition were obtained and compared. The connections between the active resistance and dielectric losses in the frequency range of 0.02–100 kHz at normal temperature of granite samples of two regions are given. It is established that granites from the seismically active area have significantly lower values of electrical resistance than their analogues from the "weakly active" areas. This is probably due to the physical and chemical processes occurring in the bowels of the Earth.
INVESTIGATION OF THE DEVELOPMENT MODES OF THE DESTRUCTION PROCESS USING THE ENERGY SPECTRUM OF ACOUSTIC RADIATION
Authors: Беликов В.Т. , Рывкин Д.Г.
Published: July 2024

С использованием данных по двум амплитудно-частотным спектрам акустической эмиссии, зарегистрированным в процессе разрушения образца бетона, построены соответствующие распределения мощности акустического излучения по длинам полуосей дискообразных трещин. Сравнительный анализ полученных распределений показал, что в течение промежутка времени между моментами регистрации спектров происходит перераспределение акустического излучения в пользу дискообразных трещин с высокими значениями длины большой полуоси и малой величиной раскрытия. Результаты исследования позволили охарактеризовать режим развития процесса разрушения в момент регистрации второго спектра акустической эмиссии.

Using the data on two amplitude-frequency spectra of acoustic emission recorded during the destruction of a sample of concrete, the corresponding distributions of the power of acoustic radiation depending the semi-axes of disc-shaped cracks were constructed. A comparative analysis of the obtained distributions showed that during the time interval between the moments of recording the spectra, there is a redistribution of acoustic radiation in favor of disc-shaped cracks with high values of the length of the major semi-axis and a little crack opening . The results of the study allowed us to characterize the mode of development of the process of destruction at the time of registration of the second spectrum of acoustic emission.
THE STUDY OF STATE OF SOIL DAM ON THE RIVER KUNGURKA BY REMOTE INDUCTION SOUNDINGS METHOD
Authors: Горшков В.Ю. , Байдиков С.В. , Арзамасцев Е.В.
Published: July 2024

Статья посвящена применению дистанционных индукционных зондирований (ДИЗ), электроразведочного метода с контролируемым источником переменного электромагнитного поля, для оценки состояния гидротехнического сооружения (ГТС). Метод ДИЗ имеет основное преимущество перед кондуктивными электрометрическими методами геофизики в том, что не требует установки заземлений для генераторного и измерительного блоков, что позволяет сохранять высокую производительность вне зависимости от свойств верхнего слоя грунтов (на застроенных территориях, в условиях мерзлоты и т.д.). Полученные в ходе работ на грунтовой плотине в с. Кунгурка результаты ДИЗ показали эффективность метода для построения качественных разрезов тела плотины, определения сохранности насыпных грунтов и наличия ослабленных зон.

The article is devoted to the use of remote induction soundings (RIS), an electrical prospecting method based on a alternating electromagnetic fi eld, for assessing the state of a hydraulic structure. The RIS method has the main advantage over conductive electrometric methods of geophysics in that it does not require grounding of the generating and measuring units, which allows maintaining high performance regardless of the properties of the upper layer of soils (in built-up areas, in permafrost conditions, etc.). Results of RIS, obtained on a soil dam in village Kungurka, showed the effectiveness of this method for constructing qualitative sections of the dam body, determining the safety of bulk soils and the presence of weakened zones.
GEOPHYSICAL RESEARCH IN THE SEROV-MAUK FAULT ZONE
Authors: Давыдов В.А. , Арзамасцев Е.В. , Байдиков С.В. , Горшков В.Ю. , Астафьев П.Ф.
Published: July 2024

Приведены материалы комплексных геофизических исследований Кунгурковского параметрического профиля в Дегтярско-Полевском рудном районе Среднего Урала. Исследуемая область находится в зоне регионального Серовско-Маукского разлома, разделяющего комплексы пород Тагильского прогиба и Восточно-Уральского поднятия. По результатам опытно-методических работ построены разрезы различных физических параметров, выделены литологические и тектонические границы сложного комплекса вмещающих пород. Проведенные исследования показали хорошую сопоставимость геоэлектрических разрезов, полученными разными методами электромагнитных зондирований, с реальной геологической обстановкой.

The materials of complex geophysical studies of the Kungurkovsky parametric profi le in the Degtyarsko-Polevsky ore region of the Middle Urals are presented. The study area is located in the zone of the regional Serov-Mauk fault, which separates the rock complexes of the Tagil trough and the East Ural uplift. According to the results of experimental and methodical works, sections of various physical parameters were plotted, lithological and tectonic boundaries of a compound complex of host rocks were distinguished. The performed studies have shown good compatibility of geoelectric sections, obtained by various methods of electromagnetic soundings, with actual geological conditions.
EXAMPLES OF THE COMPLEX SOLUTION OF THE INVERSE MAGNETIC AND GRAVIMETRY PROBLEMS FOR THE EARTH’S CRUST RHEOLOGICAL BOUNDERIES
Authors: Пьянков В.А. , Рублев А.Л.
Published: July 2024

По наблюденным данным проведена комплексная интерпретация магнитного и гравитационного полей участка земной коры Среднего и Южного Урала. Рассчитано распределение намагниченности и плотности. Для решения структурной обратной задачи магнитометрии предлагается модифицированный итеративный метод локальных поправок. В этой статье мы описываем новые результаты построения магнитной и плотностной моделей земной коры Предуралья, включая зону дилатансии.

According to the observed data, we had made a complex interpretation of the magnetic and gravitational fi elds of the Earth’s crust region of the Middle and Southern Urals. The distribution of magnetization and density is calculated. To solve the structural magnetic inverse problem, a modifi ed iterative local correction method is proposed. In this paper we describe new results of construction of the Earth crust magnetic and density models (Predurals, including the dilatant zone).
GLOBAL DATABASES OF THE EARTH’S GRAVITATIONAL FIELD FOR THE ARCTIC PART OF THE URALS
Authors: Муравьев Л.А.
Published: July 2024

В настоящее время исследователям доступны общемировые базы данных гравитационного поля, полученных путем обработки результатов наземных, воздушных, морских и спутниковых гравиметрических съемок. Пространственное разрешение этих данных составляет величину порядка 10 км, что позволяет использовать их при построении региональных плотностных моделей. Существует несколько общеземных моделей гравитационного поля, отличающихся исходными данными и методами их обработки, что ставит вопрос выбора желаемой модели, применимой для изучения конкретного региона. Мы выполнили сравнение этих баз данных на приарктический фрагмент территории уральского региона, ограниченный координатами 6672 с.ш. и 4874 в.д. Сравнение показало, что общемировые модели гравитационного поля можно использовать в качестве исходных данных для построения плотностных моделей и изучения глубинного строения литосферы в региональном масштабе. Аномалии в свободном воздухе для моделей EGM2008, GECO, EIGEN6C4 и WGM2012 на выбранной территории практически совпадают. Модель WGM2012 может использоваться в качестве альтернативы наземным и воздушным съемкам, при отсутствии данных или для выравнивания их значений для различных съемок.

Several global databases of gravitational fi eld anomalies obtained by joint processing terrestrial, altimetryderived, airborne and satellite gravity data are currently available to researchers. The spatial resolution of these models is up to 10 km, which allows using this data for regional density modeling. The presence of several models, differing in the source data and methods of their processing, necessitates the choice of the desired model, applicable for the study of a particular region. Our efforts are aimed at comparing these models in the territory of the Ural region within N6672 and E4874. The comparison of datasets showed that these global models could be used as initial data for constructing density models of the deep structure of the lithosphere. The freeair anomalies for the EGM2008, GECO, EIGEN6C4 and WGM2012 models in the selected territory practically coincide. WGM2012 data can be used as an alternative to land and aerial surveys, of no data available or to equalize their values for different surveys.