bluuebunny/crossref_metadata_2025 huggingface dataset:
Prospective assessment of canine thyroid cancer—part I: nodal metastatic rate and impact of nodal immunohistochemistry in 70 dogs
Authors: Skinner Owen T. , Kim Dae Young , Story Ashton L. , Karnia James J. , Selmic Laura E. , Lapsley Janis M. , Dornbusch Josephine A. , Johnson Carley , Oblak Michelle L. , McKenna Charly , Garrett Colleen J. , Hoehn Malissa M. , Mickelson Megan A.
Published: June 2024

OBJECTIVE

To determine the rate of nodal metastasis in dogs with thyroid cancer and evaluate whether immunohistochemistry (IHC) identifies additional metastases beyond evaluation with H&E.

ANIMALS

70 prospectively enrolled client-owned dogs with thyroid cancer managed with thyroidectomy.

METHODS

Dogs underwent thyroidectomy with concurrent elective bilateral medial retropharyngeal (MRP) ± deep cervical lymphadenectomy. Thyroid tumors and associated lymph nodes were reviewed by a single board-certified pathologist. Immunohistochemistry was used for all primary tumors (thyroid transcription factor-1 and calcitonin) to support a diagnosis of follicular or medullary carcinoma. Lymph nodes without evidence of metastasis after H&E review were labeled with the antibody associated with the wider uptake in the primary tumor.

RESULTS

77 thyroid cancers were resected from the 70 dogs enrolled, including 61 (79.2%) follicular, 8 (10.7%) medullary, and 7 (9.3%) mixed follicular/medullary carcinomas, with 1 (1.3%) carcinosarcoma. Twelve dogs had evidence of nodal metastasis following H&E review. Occult micrometastasis was identified in 1 dog following nodal IHC, resulting in documented metastasis in 13 of 70 (18.6%) dogs. Metastasis was more common with medullary (5/8) and follicular/medullary carcinoma (3/7) than follicular carcinoma (5/61). All MRP metastases were ipsilateral (7/77 [9.1%]), without contralateral MRP metastases (0/62). Fourteen of 41 (34.1%) deep cervical lymph nodes were metastatic.

CLINICAL RELEVANCE

Nodal metastasis was uncommon for follicular carcinoma but was seen in > 50% of dogs with thyroid cancer involving a medullary component. Routine nodal IHC appears to be low yield for thyroid carcinoma. Extirpation of ipsilateral MRP and identifiable deep cervical lymph nodes is recommended with thyroidectomy until detailed preoperative risk stratification becomes available.
Natural Conditions for Heliophilous Tree-Species Following Forest Dieback in Temperate Zone After Periglacial Habitats
Authors: Samec Pavel , Hájek Filip , Sirota Ivo
Published: June 2024

Widespread forest dieback following a series of exceptionally dry seasons has made restoration by relic heliophilous tree-species uncertain. Using logistic regression, we identified conditions suitable for relic Norway spruce (Picea abies /L./Karst.), Scots pine (Pinus sylvestris L.), European larch (Larix decidua Mill.), birches (Betula sp.), poplars (Populus sp.) and willows (Salix sp.) by comparing the relief and bedrock under stands that died abruptly between 2018 and 2020 at temperate zone after periglacial habitats of the Czech Republic. Extent of forest dieback was determined through automated object analysis on the basis of vectorised Planet Scope and Sentinel-2 satellite images. The object analysis consisted of mainly spruce stands and dieback indicated by a deep inter-year decrease in the vegetation indices. The overall occurrence of tree-species in pure or mixed stands was determined from a polygon geodatabase of forest management plans, while growth condition types were determined by overlaying biogeographically subdivided polygons. Dead forests provided suitable conditions for mixed conifer, birch, and poplar stands on 64.4 % of the greywackes, acid metamorphites, and waterlogged sediments on broken plateaus, depressions, and slopes. In comparison, pure stands of relic tree-species can cover 35.6 % of dead forest area. Restoration of mixed forests differenting over a range of growth conditions seems to be suitable for adaptation to climate change impacts.
Penilaian Faktor-Faktor Resiko Musculoskeletal Disordes Pada Pegawai Kantor PT. X Di Kota Padang
Authors: Suryani Eva , Yulius M. Nursyaifi , Noviyarsi . , Warsito Doni Pramono
Published: June 2024

Tujuan dari penelitian ini adalah untuk melakukan penilaian resiko permasalahan musculoskeletal disorders terutama gerakan berulang dari anggota tubuh bagian atas dalam tugas pegawai perkantoran di kota Padang.  Pengumpulan data dilakukan teradap 20 orang sampel dengan melakukan pengukuran terhadap postur pada saat bekerja dan juga melalui wawancara semi terstruktur dan kuesioner tertutup dengan kriteria masa kerja minimal 1 tahun dan bekerja minimal selama 3 jam berturut-turut per hari dengan menggunakan komputer. Metoda yang digunakan untuk penilaian resiko kerja  adalah metoda Rapid Office Strain Assessment tools (ROSA) yaitu untuk menilai kegiatan kerja berulang pegawai selama bekerja. Dari hasil penelitian diperoleh bahwa skor akhir 7 sebanyak 6 pegawai, skor akhir 8 sebanyak 13 pegawai dan skor akhir 9 sebanyak 1 pegawai jadi keseluruhan pekerja memiliki resiko tinggi karena memiliki nilai score lebih dari 5.  Hal ini juga didukung oleh temuan dari hasil wawancara dan kuesioner menggunakan Nordic Body Map yang mengindikasikan bahwa mayoritas pegawai mengeluhkan gangguan pada beberapa bagian tubuh pada saat bekerja. Keluhan tersebut paling dominan terjadi pada pinggang, punggung, leher bagian atas, leher bagian bawah, dan tangan kanan. Kondisi ini menunjukkan dapat menimbulkan resiko terjadinya musculoskeletal disorders (MSDs).  Untuk mengatasi berbagai keluhan tersebut diperlukan adanya perubahan desain pada stasiun kerja yang ada sekarang sehingga postur tubuh pekerja bisa menjadi lebih ergonomis pada saat bekerja.
PERANCANGAN USULAN PERBAIKAN PADA PROSES TANDEM COLD MILLING PRODUK FULL HARD 0,2 x 914 mm DI PT XYZ DENGAN METODE SIX SIGMA
Authors: Permana Muhamad Candra , Lubis Marina Yustiana , Yanuar Agus Alex
Published: June 2024

PT XYZ merupakan perusahaan manufaktur baja. Cold Rolling Mill adalah pabrik yang memproduksi produk Full Hard dengan ukuran 0,2 x 914 mm merupakan produk popular yang rutin diproduksi perusahaan. Full Hard 0,2 x 914 mm menghasilkan total produksi periode Januari 2018 sampai Desember 2018 sebesar 121.637 ton dengan jumlah produk defective sebesar 19.404 ton. Fokus penelitian ini adalah memperbaiki tahapan proses di mill Continuous Tandem Cold Mill (CTCM) pada proses Tandem Cold Milling. Digunakan metodologi penelitian Six Sigma yaitu DMAIC untuk mengurangi terjadinya permasalahan. Pertama, dilakukan identifikasi CTQ produk dan proses untuk mengetahui persyaratan mana yang belum terpenuhi. Lalu, dilakukan pengukuran nilai DPMO dan level sigma. Didapatkan nilai rata-rata DPMO sebesar 26474,3 dan nilai rata-rata level sigma sebesar 3,432. Untuk mengetahui penyebab terjadinya defect pada proses tersebut, maka dilakukan analisis menggunakan fishbone diagram untuk menjelaskan akar penyebab permasalahan dan improve dengan memberikan rancangan usulan perbaikan. Usulan perbaikan yang diberikan adalah pengadaan alat ukur ketebalan, pembuatan check sheet untuk pengecekkan komponen-komponen bending system, pengoptimalan besar suhu coolant water, dan pembuatan alarm penanda perubahan besar tekanan reduksi. Kata kunci: Full Hard, Six Sigma (DMAIC), Tandem Cold Milling, CTQ, Analisis Regresi, Poka Yoke.
OPTIMALISASI BIAYA DISTRIBUSI DAN ALOKASI PRODUK DENGAN MENGGUNAKAN METODE TRANSPORTASI
Authors: Kurnia Mutiara , Arifin Jauhari , Sari Rianita Puspa
Published: June 2024

The growth of the manufacturing industry in Indonesia is now increasingly rapid, one of which is in the food and beverage sector. PT. XYZ is one of the beverage industries that has problems, namely the high cost of distribution due to the irregular distribution of distribution from the Factory to the Regional Sales Office (KPW). This study uses the transportation method with the initial solution, namely the Vogell Approximation (VAM) method, the Least Cost, North West Corner (NWC) method and the optimum solution using the Modified Distribution (MODI) method. In addition, a comparison was made with the results of the POM - QM software. The purpose of this research is to optimize distribution costs and allocate distribution of tea products in boxes (tetra pak) with a volume of 250 ml and analyze the optimal distribution costs after the application of transportation methods in distributing 250 ml Sosro Tetra Pak tea products at PT. XYZ. After doing the analysis and calculations, it is concluded that the application of transportation methods using POM - QM software can optimize distribution costs and allocate distribution of 250 ml Sosro Tetra Pak tea products at PT. XYZ. Then After calculating the transportation method, the optimal distribution cost is Rp. 2,059,460,017. There was a decrease in costs of up to Rp. 140,539,983 so the company will save up to 6.39%.
Presentación
Authors: Espacio Historia y
Published: June 2024

Presentación
Marilía Dalva Klaumman Cánovas. Santos e Imigração na Belle Époque. Os espanhóis – cotidiano urbano, práticas associativas e militância política (1880-1922). São Paulo: Universidade do São Paulo, 2017, 464p.
Authors: Corredor Espitia Julián David
Published: June 2024

El libro Santos e Imigração na Belle Epoque es un texto escrito por la investigadora Marilia Dalva Klaumann Cánovas, que aborda las diferentes transformaciones urbanas, económicas, políticas y sociales que experimentó la ciudad costera de Santos, en el estado de Sao Paulo, entre 1880 y 1922, durante el arribo de miles de inmigrantes procedentes de diferentes partes del Viejo Mundo. La investigación se centró en el estudio de la migración española que ocupó el segundo lugar —después de la portuguesa— como la más influyente en la evolución de este territorio. Un valioso trabajo que le ha aportado a la historiografía brasileña y que podría servir como referente a los estudios históricos que se adelanten en Colombia sobre migraciones internacionales.
Geografía histórica: Por la genética del espacio
Authors: Buitrago Bermúdez Oscar
Published: June 2024

El compromiso social de la geografía, como ciencia que estudia el espacio, es crear el conocimiento que le permita a cada ser humano saber el lugar que ocupa en la Tierra. El saber que cada persona tiene acerca del territorio que construye y del que hace parte, de su tierra, nace de la experiencia cotidiana a través de la cual se relaciona con el entorno, creando y motivando vínculos estrechos, que constantemente se reafirman en la condición de hacedores de su lugar. La experiencia de las relaciones sociales que se establecen para hacer el lugar han sido expresadas y exaltadas por las seres humanos a través de sus producciones culturales, entre estas sobresale la literatura y si se prefiere, la literatura realista, regionalista y costumbrista como documento privilegiado de expresión y representación de un espacio y tiempo determinados. Darle nombre a un lugar por afecto u odio (topofilia y topofobia, respectivamente) es una consecuencia lógica de los procesos de apropiación y significación que una persona o comunidad ha tenido en relación con un espacio determinado.
F.O.M.O: o que é?
Authors: Nardi Antonio Egidio , Rodrigo Thiago
Published: June 2024

A sigla FOMO vem da expressão em inglês “fear of missing out”, que traduzida para o português significa “medo de ficar de fora”. Esta denominação é usada como o medo de não conseguir acompanhar as atualizações e eventos, o que faz com que a pessoa mantenha-se conectada às redes sociais. O termo também é utilizado para a curiosidade em saber o que os outros estão fazendo, vestindo, comendo, sentindo, etc. Alguns dos principais sintomas desta síndrome são: dedicar muito tempo às redes sociais, usar excessivamente o celular, inclusive durante as refeições, durante o trabalho ou até dirigindo, ter dificuldade em viver o momento e preocupar-se em tirar fotos para publicá-las nas redes sociais, esperar constantemente novas notificações no celular, entre outros.
Apresentação: Lucas Veloso
Transmissão ao vivo: RecPlay Produtora
Produção: Departamento de Comunicação da ABP
Realização: Associação Brasileira de Psiquiatria - ABP
الاستلزام التخاطبي في معلقة الأعشى / مقاربة تداولية
Authors: عبود شيماء حاتم
Published: June 2024

إن مصطلح الاستلزام التخاطبي يُعدُّ احد مصطلحات التداولية الحديثة التي رُسخت على يد فلاسفة اللغة ، وأصبحت معلماً من معالم الدرس الحديث ، واحد المناهج النقدية التي عُنيت بتحليل الخطاب ، إذ تهدف نظرية الاستلزام التخاطبي إلى الوقوف على دلالات الألفاظ ، وكشف ما يستتر خلفها وما تتضمنه من معاني ومقاصد غير مباشرة ، ويُعد قوام عملية التداول ( مبدأ التعاون ) الذي يكون ما بين المتكلم والسامع الذي وضعه العالم (( غرايس Grice  )) ، ثم عمد الى وضع مجموعة من القواعد والمبادئ التخاطبية التي تتمثل في : مبدأ الكم ، ومبدأ الكيف ، ومبدأ المناسبة ، ومبدأ الطريقة او الاسلوب ، وذلك بهدف ضبط ونجاح العملية التخاطبية والذي سعى علماء التداولية الى البحث عنها ، وعن السبب الذي يُمكن المتخاطبين من التخاطب فيما بينهم والوصول الى حوار ناحج . 
   فالاستلزام التخاطبي تكمن أهميته في عملية التخاطب إذ يقوم بتوصيف ثم تفسير ويمكن المتكلم ان يعني اكثر مما يقول ، وكيف تصل المقولات الخطابية إلى إكثر من معانيها الحرفية ، ويمكن المُخاطب من التأويل .
المعرفة الإجرائية والعبء المعرفي وعلاقتهما بأداء المهارات الإنتاجية لدى متعلمي اللغة الإنجليزية كلغة أجنبية في العراق
Authors: عايد زبيدة سمير , يحيى نغم قدوري
Published: June 2024

في هذا البحث المستل نبحث المعرفة الإجرائية والتي تتضمن فهم كيفية أداء المهام اللغوية بفعالية، مع إدارة العبء المعرفي يمكن أن ترتبط بأداء الطلبة لمهارات اللغة الإنتاجية. تعد الدراسة الحالية دراسة ارتباطية تهدف إلى كشف نوع الارتباطات بين قدرة الطلبة على استخدام المعرفة الإجرائية ، وإدارة العبء المعرفي ، وارتباطهما بإنتاج واستخدام اللغة, وتألفت عينة الدراسة من 240 طالبًا و طالبة في السنة الثالثة من قسم اللغة الإنجليزية في جامعة تكريت في العام الدراسي 2022/2023. حيث تم جمع البيانات باستخدام أداتين، الاستبيان لتقييم أنواع العبء المعرفي لدى الطلبة، واختبارين تشخيصيين لتقييم مستوى المعرفة الإجرائية، العبء المعرفي ، وأداء مهارات الإنتاج اللغوية. أظهرت نتائج الدراسة أن هناك ارتباطًا معنويًا بين معرفة الطلاب الإجرائية ومهارة الكتابة، وهناك ارتباطًا معنويًا بين العبء المعرفي لدى الطلبة ومهارات الإنتاج اللغوية، وأن استجابة الطلبة في (النوع الثالث للعبء المعرفي) لديها أعلى متوسط درجة، وأن الارتباط إيجابي. واشارت الاجراءات الاحصائية إلى عدم وجود ارتباط معنوي بين معرفة الطلبة الإجرائية والمهارات اللغوية  للكلام. استنادًا إلى هذه النتائج، تم تقديم بعض الاستنتاجات والتوصيات والاقتراحات لدراسات أخرى.
جماليات المكان في تشكيل الرؤية الاخراجية للعرض المسرحي العراقي المعاصر
Authors: موسى كاظم عمران , احمد سنان محسن
Published: June 2024

في سياق التحول الجمالي لأنساق المنظومة البصرية، وتناول فكرة التأسيس المكاني للعرض المسرحي على وفق مسار الرؤية الاخراجية وهي تواجه قدرا كبيرا من التغاير والتمايز والتجريب والاختلاف للتجاوز الأطر والبديهيات وتتشابك البيئة الفضائية بالبنية الفكرية والجمالية للتجربة المسرحية، لتنتج امكنة مرنة لا تحد لها ملامح ثابتة. لذا جاء هذا البحث ليتناول اشتغالات المكان حسب توظيف الرؤية الاخراجية له. وتقع مشكلة البحث في الإجابة عن السؤال الاتي: ما هي النظم والاليات التي يعتمدها المخرج ليجعل للمكان فاعلية توليدية عبر فرضيته الإخراجية؟ وتشكل الأهمية تسليط الضوء على النظم الاشتغالية لدى المخرج المسرحي في كيفية تأسيس مكان العرض، وهو بذلك يفيد الدارسين في مجال الفن المسرحي ويهدف البحث الى التعرف على الالية التي يستخدمها المخرج المسرحي وينقسم البحث الى مبحثين، الأول: اليات اشتغال الرؤية الاخراجية في تأسيس المكان، اما المبحث الثاني فجاء بعنوان: جغرافية المكان وفاعليته في النظم الاشتغالية للعرض المسرحي  واعتمد الباحثان عينة البحث بشكل قصدي من عرض مسرحية (اعزيزة)، كما جاءت ابرز النتائج من خلال  اعتماد المخرج (باسم الطيب) الى اختيار أماكن مغايرة للمكان الرسمي (محولة ومكتشفة) لأنها تتفق ورؤيته الاخراجية لعرضه الذي اتسم بطابع تجريبي. ولجأ المخرج (الطيب) باشراك المتلقي عبر فضاء العرض وزاد هذا من ادائية الممثل كون الفضاء مشترك بين المتلقي والمؤدي مما حقق فاعلية ادائية شكلت استفزاز المتلقي جماليا. وجاءت احدى الاستنتاجات: اعتمدت الرؤية الاخراجية للمخرج المسرحي العراقي على توظيف كل المعطيات داخل جغرافية الأمكنة تقنياً كانت في تأسيس فضاءه المصطنع بالمكان المغلق او طبيعية استندت في اسسها لاشتراطات رؤيته بالمكان المحول او المكتشف. وختم البحث بقائمة المصادر.
The Cultural Remittance and Hybridization of Confucian Practices: Placemaking of Vietnamese Migrants Working in Thailand
Authors:   Center of ASEAN Community Studies, Faculty of Social Sciences, Naresuan University, Thailand, Ton Le Van , Choowonglert Achariya ,   Center of ASEAN Community Studies, Faculty of Social Sciences, Naresuan University, Thailand
Published: June 2024

The impact of remittances on development extends beyond economic growth for families and communities. This paper explores the cultural practices of Vietnamese migrants working in Thailand through a multi-sited ethnographic research methodology done in two countries – Thailand and Vietnam, including accompanying Vietnamese workers to Thailand. Specifically, it focuses on the influence of Confucian practices of cultural remittance and hybridization on placemaking within the migrant community in Vietnam. The study highlights the profound impact of remittances on development and the positive transformations they bring to the migrants' place of origin. It examines how Confucian practices shape the identities of the places of origin and Vietnamese migrants employed in Thailand. The authors argue that migrants involved in the informal economy have the annual opportunity to return home and contribute to the economy and culture of their homeland. For three decades, this process of transculturality has occurred as cultural remittances gradually hybridized with the local culture, enabling individuals to construct new identities and actively participate in placemaking. Consequently, the meaning of place of origin changes significantly from a negative place to a prominent, modern, and civilized community. This shift broadens the definition of what it means to be ‘good people,’ firmly rooted in the ideals of Confucianism.
Effect of Boric Acid on Electronically Controlled Solid Propellants
Authors: Hu Hongtong , Ding Yongjie , Xu Yishen , Wei Liqiu , Li Hong
Published: June 2024

Electrically controlled solid propellants (ECSPs) were modified with boric acid (HB). HB affects ECSPs’ combustion performance by changing the volume conductivity. Increasing the HB content can enhance the compressive properties by further increasing the crosslink density of the ECSPs. Based on the calculation results of NASA’s Chemical Equilibrium with Applications program, HB has no apparent effect on the specific impulse and adiabatic flame temperature of the propellant. The volume conductivity of the ECSPs were measured using a three-electrode system. After the addition of HB, the volume conductivity of the ECSPs decreased. In the process of thermal decomposition, the addition of HB can improve the thermal stability of ECSPs as a whole, although this effect is small. The effects of HB on the combustion rate and minimum theoretical ignition voltage of hydroxyammonium nitrate (HAN)-based propellants were studied at 0.1 MPa. The results demonstrate that the combustion rate of HAN-based propellants increases with increasing voltage, and that this characteristic is not affected by HB. However, the combustion rate decreases with increasing HB content, and the minimum theoretical ignition voltage increases accordingly.
Novel Lightweight Loop Heat Pipe Radiator for High-Power Space Systems
Authors: Li Zhisong
Published: June 2024

High-power space systems reject a large amounts of waste heat via medium- or high-temperature radiators. For this application, the heat pipe radiator is desired for its simplicity, efficiency, and reliability. It is commonly composed of cylindrical heat pipes and planar fins. Although typically made of advanced materials with low density and high thermal conductivity, the pipe–fin combination suffers from a series of drawbacks, such as large thermal resistance in component joints, thermal expansion rate incompatibility, and high acquisition cost. This study innovates the heat pipe radiator configuration by developing an all-metal loop heat pipe (LHP) radiator. The evaporator and compensation chamber are formed in a cylindrical container with traditional sintered wick layers and a plug. The LHP applies dozens of parallel capillaries arranged in two planar arrays as condensers to spread heat to radiating panels, realizing lightweightness and efficient heat transfer. A theoretical study was performed to analyze the nonuniform liquid–vapor distribution in multicondenser lines. Experimental studies were carried out to investigate startup performance, quasi-steady-state operation, and temperature hysteresis. The proposed design is proven to be capable of fulfilling the heat rejection requirement of space systems and exhibits technical benefits over existing ones.
imaginário de sucesso da gestão da pandemia no Espírito Santo: uma análise cognitivo-discursiva acerca das metáforas conceptuais de caminho e de guerra
Authors: Ribeiro Merizio Cardozo Jacimara
Published: June 2024

Trata-se de um pequeno recorte de uma pesquisa de tese de doutorado que investiga o imaginário de sucesso nos discursos de pandemia do governador do estado do Espírito Santo, Renato Casagrande. Do total do corpus formado por 91 vídeos publicados no período de março de 2020 a abril de 2022, alguns trechos com veículos metafóricos de guerra e caminho foram destacados para esta análise, neste artigo. O objetivo foi observar a construção do imaginário de sucesso da gestão da pandemia no estado como estratégia cognitivo-discursiva para tentar promover a adesão da população para uma ação direcionada pelo governo. A análise fundamenta-se na teoria da metáfora conceitual de Lakoff e Johnson (1908), na metáfora no discurso político de Semino (2008), Chilton (2004), Musolff (2016), Charteris-Black (2004, 2005, 2021), nos imaginários sociais e ethos político de Charaudeau (2006) e Maia (2015) e MCI de sucesso e discursos de sucesso, respectivamente, de Mattos (2023) e Soares (2015). Como principais resultados destacam-se as inferências das metáforas situadas Vacinação é esforço final da viagem e Espírito Santo é tropa de vanguarda .
Unified reference system for geometric characteristics dimensional elements of details. Part II. Geometric characteristics of cylindrical elements of parts
Authors:   Omsk State Technical University, Glukhov V. I. , Varepo L. G. ,   Omsk State Technical University
Published: June 2024

The unified reference system for the geometric characteristics of the part is the Cartesian rectangular coordinate system, which is materialized by sets of design datums that limit the part to six degrees of freedom: three linear and three angular. ISO standards for geometric tolerances do not use coordinate systems. In this context, research in the field of increasing the accuracy of parts by introducing linear and angular coordinates of part elements is relevant. The paper presents the second part of the article Unified Reference System for Geometric Characteristics of Dimensional Elements of Parts, which focuses on the geometric characteristics of cylindrical elements of parts. It is shown that the datums of cylindrical elements are the axes of cylinders of maximum material capable of restricting four, two and one degrees of freedom for the part depending on the functional purpose of the element. The accuracy of coordinating dimensions should be specified by symmetrical tolerances for linear and angular coordinates of elements.
The analysis of stability and variability of metrological characteristic (conversion coefficient) of glass capillary reference viscometers
Authors:   The D. I. Mendeleev All-Russian Institute for Metrology, Sulaberidze V. Sh. , Neklyudova А. А. ,   The D. I. Mendeleev All-Russian Institute for Metrology
Published: June 2024

The results of determining the stability and variability of the main characteristic of glass capillary reference viscometers — conversion coefficient — by analyzing a set of data on viscometers having different diameters of the measuring capillary are presented. It is shown that the mean values of the sample differ from the mean values of the symmetric normal distribution curves within (2–4) %, as well as the correspondence of statistics to the normal distribution law by means of the inverse standard function and histograms showing the degree of correspondence of the sample distribution to the theoretical one.
Development and research of the structure of a digital frequency meter for an instantaneous frequency measurement system
Authors:   Omsk State Technical University, Lyashuk A. N. , Puzyrev P. I. ,   Omsk State Technical University, Zavyalov S. A. ,   Omsk State Technical University
Published: June 2024

The article proposes a new method for measuring frequency based on a one-bit ADC. In contrast to the known method of measuring frequency using a delay line, the developed structure of a meter that implements the proposed method makes it possible to get rid of delay lines for measuring frequency in a wide frequency range and to sharply reduce the weight and size parameters of the entire meter with an integrated implementation. Unlike other known digital meters, described in sources, the proposed method makes it possible to increase the accuracy of frequency measurements in a wide frequency range.
Experimental verification of the applicability of methods for calculating the compressibility factor of natural gas at low temperatures
Authors:   LLC «Gazprom Mezhregiongaz», Kutovoy D. Yu. , Ganiev R. I. ,   LLC Metrology Center «STP», Shustrova M. L. ,   Kazan National Research Technological University, Yavkin V. B. ,   Kazan National Research Technical University named after A. N. Tupolev–KAI, Fafurin V. A. ,   Kazan National Research Technological University
Published: June 2024

The article is devoted to the analysis of compressibility factor calculation methods in the temperature range from 220 to 250 K. The AGA8-92DC (GOST 30319.2- 96), AGA8 Report Detail (GOST 30319.3-2015), GERG-2004/2008, NX19, GERG-91, ISO 20765-1 (GOST R 8.662-2009), GSSSD MR 118-05 (moderately compressed gas mixtures) and GSSSD MR 113-03 (Wet Oil Gas) methods are experimentally tested. Deviations of experimental data and calculated values of compressibility coefficient determined by the specified methods are shown. It is found out that the deviation of the calculated values of the compressibility factor according to the AGA8-92DC, AGA8 Report 1 Detail, GERG-2004/2008, ISO 20765-1 (GOST R 8.662-2009), GSSSD MR 13-03 methods from the experimental ones does not exceed 0,1 %. This fact confirms the possibility of using these methods in the temperature range from 220 to 250 K. The results obtained in the framework of this study are highly significant for flow metering, and in particular, provide an increase in the accuracy of the procedure for bringing the volume of natural gas to standard conditions at low temperatures.
The problem of assessing endurance of hull elements of low-flying orbital objects
Authors:   Omsk State Technical University, Lesnyak I. Yu. , Sokolovsky Z. N. ,   Omsk State Technical University, Fedorova M. A. ,   Omsk State Technical University, Gavrilenko S. V. ,   Omsk State Technical University, Kazakov A. Yu. ,   Omsk State Technical University, Konovalov V. E. ,   Omsk State Technical University
Published: June 2024

The paper analyzes the issue of calculating the endurance of the body of lowflying orbital objects from cyclic temperature alternating deformation beyond the limits of Hooke's law. The practical absence of direct calculation methods is stated. An indirect calculation is proposed on the basis of available experimental data on mechanical tests of samples with the «stress» parameter and an algorithm for transition from actual deformations to equivalent stresses. The calculation method is based on the use of the existing experimental fatigue curve under a symmetrical bending cycle, the results of static tensile tests at extreme cycle temperatures, and a generalization of known information about the patterns of changes in the endurance parameters of the material under consideration in relation to the conditions of cyclic temperature alternating deformation. The adequacy of the methodology is verified using the example of depressurization of the housing of the Zarya orbital module of the international space station, made of AMg6 alloy after ≈120,000 cycles of alternating temperature loading. The difference between the calculated and actual endurance of the AMg6 alloy is within the natural range of 20 % during fatigue testing.
Development of indicators for evaluating the effectiveness of the monitoring system for development of standardization documents using information technology
Authors:   MIREA – Russian Technological University, Knyazev A. V. , Cheremukhina Yu. Yu. ,   MIREA – Russian Technological University
Published: June 2024

The article presents the results of the development of indicators for monitoring the process of developing standardization documents. An integral part of the management of the standardization document development process is the monitoring system. The monitoring system allows you to monitor and control key indicators of the standardization document development process. Also, the use of a monitoring system makes it possible to form a reference base for analyzing the causes of deviations in the values of indicators. At the same time, an important task is to evaluate the effectiveness of the monitoring system and the mathematical justification of the indicator for evaluating the effectiveness of the monitoring system, taking into account errors in the implementation of the monitoring process.
Greenhouse climate control system based on fuzzy logic
Authors:   National Research Tomsk Polytechnic University, Payuk L. A. , Voronina N. A. ,   National Research Tomsk Polytechnic University, Umurzakova A. D. ,   National Research Tomsk Polytechnic University, Lazutkina E. E. ,   National Research Tomsk Polytechnic University, Khatsevskiy K. V. ,   Omsk State Technical University
Published: June 2024

Paper is devoted to development and research of the fifth generation greenhouse climate automatic control system. This system is based on fuzzy logic toolbox and it allows to automate control processes using the latest developments in this field. In the work the concept of «microclimate of greenhouse complex» for the region of the risky agricultural zone when growing large strawberries in a closed ground.
The method for optimizing the placement of compensating and balancing devices in low voltage electrical networks
Authors:   Mari State University, Sidorova V. T. , Volkov S. V. ,   Mari State University, Orlov A. I. ,   Mari State University
Published: June 2024

The paper studies the optimization features of low-voltage electrical network modes for energy-efficient power transmission. The main features of these networks are the high values of the zero-sequence voltage unbalance factor and the mismatch of voltage values with the necessary requirements. Therefore, balancing the loads by phases and reactive power compensation are chosen as measures to improve the listed network parameters. One of the main factors for the effective solution of this problem is the determination of load balancing points and reactive power compensation, as well as the required power of the devices used. To solve the multicriteria problem of determining device connection points, an analysis of existing objective functions is carried out. As a result, a target function is proposed that includes costs, voltage losses, zero-sequence voltage asymmetry coefficient. When solving the optimization problem with the help of the proposed objective function, the voltage values and the voltage asymmetry factor at the consumer connection points will be within the required limits. The results of a study of the optimization function using the example of a model network are presented. The calculations are carried out in two stages: the search for sensor's nodes, then their study for optimality. All calculations are carried out in the MATLAB environment, taking into account voltage losses and power.
The use of the methodological base of the study to determine the conduction of low-frequency electromagnetic interference according to the coefficient of the n-th harmonic component of the voltage
Authors:   Omsk Institute of Water Transport (branch) Siberian State University Water Transpor, Rudi D. Yu. , Antonov A. I. ,   Omsk Institute of Water Transport (branch) Siberian State University Water Transpor, Ruppel A. A. ,   Omsk Institute of Water Transport (branch) Siberian State University Water Transpor, Ruppel E. Yu. ,   Siberian State Automobile and Highway University, Shitik T. V. ,   Omsk River Command School named after Captain V. I. Evdokimov Omsk Institute of Water Transport (branch) Siberian State University Water Transport
Published: June 2024

With the help of the methodological base of the study (the foundations of probability theory and mathematical statistics), the processing of the experiment conducted at the research object is carried out. This object is the mechanical workshop of CJSC Sibgazstroydetal, which is engaged in providing for the needs of the gas, oil and energy industries. In this paper, the issue of determining the conductive low-frequency electromagnetic interference (EMI) by the coefficient of the n-th harmonic component of the voltage (K U(n) ) is studied in detail. Harmonic distortion is a constant phenomenon in electrical networks. Higher harmonics have a negative impact on the electrical network, including on electric consumers (reduced service life, productivity, etc.). The problem of non-sinusoidal voltages has been studied for quite a long time and the results obtained during these studies confirm the presence of a large number of damages to electricity consumers who are in operation. The probability of occurrence of conductive low-frequency EMF by K U(n) at the research site is determined. The paper analyzes the results obtained with the help of the conducted research. According to the results of the analysis, the relevant conclusions are presented.
Ruptured distal anterior inferior cerebellar artery aneurysm years after stereotactic radiosurgery for vestibular schwannoma: A case report and literature review
Authors: Wakuta Naoki , Yoshioka Tsutomu , Irie Yukino , Tsugu Hitoshi , Abe Hiroshi
Published: June 2024

Background:

Aneurysmal formation after stereotactic radiosurgery (SRS) for vestibular schwannoma (VS) is a rare complication. Its characteristics and the best treatment strategies remain controversial, and the clinical course is especially unknown because reported aneurysms are first incidentally detected, or aneurysmal rupture occurs suddenly, and they are treated immediately.

Case Description:

A 68-year-old man who underwent SRS for VS 20 years ago presented with subarachnoid hemorrhage (SAH) due to rupture of a radiation-induced fusiform anterior inferior cerebellar artery aneurysm. He was treated with parent artery occlusion, resulting in a modified Rankin scale grade 2. This report illustrates the first case of detected aneurysm formation before rupture with retrospective magnetic resonance imaging evaluation.

Conclusion:

We describe the possible risk of rapid progression and rupture of aneurysms, focusing on the interval from SRS to aneurysmal formation. The period of formation of SRS-induced aneurysms is suspected to vary from years to decades regardless of radiation doses; however, aneurysms estimated as pseudoaneurysms have an extremely high risk of rupture within a few years, even when small in size. If aneurysms are discovered unruptured, there are some advantages in not only the prevention of poor prognosis due to SAH but also in the availability of optional therapeutic strategies using revascularization. Long-term annual follow-up, including vessel examination, is warranted not only to assess tumor status but also for early detection of any vascular lesions.
Intracranial aneurysms and abducent nerve palsy
Authors: Hoz Samer S. , Ma Li , Ismail Mustafa , Al-Bayati Alhamza R. , Nogueira Raul G. , Lang Michael J. , Gross Bradley A.
Published: June 2024

Background:

Cranial nerve (CN) palsy may manifest as an initial presentation of intracranial aneurysms or due to the treatment. The literature reveals a paucity of studies addressing the involvement of the 6th CN in the presentation of cerebral aneurysms.

Methods:

Clinical patient data, aneurysmal characteristics, and CN 6th palsy outcome were retrospectively reviewed and analyzed.

Results:

Out of 1311 cases analyzed, a total of 12 cases were identified as having CN 6th palsy at the presentation. Eight out of the 12 were found in the unruptured aneurysm in the cavernous segment of the internal carotid artery (ICA). The other four cases of CN 6th palsy were found in association with ruptured aneurysms located exclusively at the posterior inferior cerebellar artery (PICA). For the full functional recovery of the CN 6th palsy, there was 50% documented full recovery in the eight cases of the unruptured cavernous ICA aneurysm. On the other hand, all four patients with ruptured PICA aneurysms have a full recovery of CN 6th palsy. The duration for recovery for CN palsy ranges from 1 to 5 months.

Conclusion:

The association between intracranial aneurysms and CN 6th palsy at presentation may suggest distinct patterns related to aneurysmal location and size. The abducent nerve palsy can be linked to unruptured cavernous ICA and ruptured PICA aneurysms. The recovery of CN 6th palsy may be influenced by aneurysm size, rupture status, location, and treatment modality.
Long-term surveillance in an infant with spontaneous obliteration of pial arteriovenous malformation and large intranidal aneurysm: A unique case observation
Authors: Iampreechakul Prasert , Wangtanaphat Korrapakc , Wattanasen Yodkhwan , Hangsapruek Sunisa , Lertbutsayanukul Punjama , Siriwimonmas Somkiet
Published: June 2024

Background:

Spontaneous obliteration of untreated cerebral arteriovenous malformations (AVMs) is rare, occurring in <1% of cases, and is even less common in pediatric populations. The mechanisms driving spontaneous regression of brain AVMs remain poorly understood, and long-term surveillance in pediatric patients is infrequently documented.

Case Description:

The authors reported a remarkably rare instance of spontaneous thrombosis in a pial AVM accompanied by a large intranidal aneurysm in a 10-month-old infant, initially presenting with a nocturnal seizure. Diagnostic imaging revealed a ruptured intranidal aneurysm causing acute hemorrhage in the left anterior interhemispheric subdural space, extending into adjacent areas. Further, magnetic resonance imaging (MRI) and magnetic resonance angiography delineated the AVM in the left superior frontal gyrus, associated with a thrombosed aneurysm and surrounding edema. Cerebral angiography confirmed the AVM’s origin from the left anterior cerebral artery, displaying early venous drainage and small, indirect feeders not amenable to endovascular treatment. Over time, serial imaging showed the aneurysm’s transition from partial to complete thrombosis. Subsequent MRIs and angiographic assessments up to age 10 confirmed complete resolution of the AVM and aneurysm, with focal hyperemia persisted until age 16, when recurrent AVM was identified.

Conclusion:

We document a rare spontaneous regression of a pial AVM with an intranidal aneurysm influenced by specific vascular factors. Despite this, spontaneous thrombosis should not replace vigilant long-term monitoring in pediatric neurovascular care.
The Development of Air Navigation in Germany in West-Germany After 1945: The First Ten Years
Authors:   International Advisory Group Air Navigation Services (ANSA), Fischer Frank W.
Published: June 2024

The book series Die Entwicklung der Flugsicherung in Deutschland has been published in German. This is the first of two translated books. This documentation on the development of air traffic control in West Germany after 1945 explains the continuation of the further development of the establishment of military tactical air traffic control units, which began under the military governments of the victorious powers and the subsequent Allied occupation forces in Germany. This transport service of the first decade after the end of the war forms the cradle of modern European air traffic control as the main component of the entire air traffic control system. It ended with the partial restoration of air sovereignty in West Germany (BRD) in 1955 and the end of supervision of the restored Federal Air Traffic Control Administration by HICOM's Allied Civil Aviation Board - CAB in mid-1956.
Pengaruh Konsentrasi Pupuk Organik Cair Asal Buah-Buahan terhadap Pertumbuhan dan Hasil Tanaman Cabai pada Tanah Gambut
Authors: Wijaya Indra , Susana Rini , Patriani Patriani
Published: June 2024

Chili is one of the horticultural commodities that has a lot of nutrients and vitamins. Generally chili need sufficient nutrients in their growth and development so that the results can be maximized. Nutrients in the soil can not fully meet the needs of plant nutrients so that the addition of nutrients is required through liquid organic fertilizers from fruits. This research aims to determine the best concentration of liquid organic fertilizer from fruits on the growth and yield of chili plants on peat soil. This research was carried out in the experimental field of the Agriculture Faculty, Tanjungpura University Pontianak, in November 2017 to February 2018. This research used a Completely Randomized Design (CRD), with 5 treatment levels, namely k1 (5 ml /l), k2 (20 ml/l), k3 (35 ml/ l), k4 (50 ml/l), k5 (65 ml/l). Each treatment was repeated 5 times with 4 plants sample. Variables observed in this research include plant height, flowering time, plant dry weight, fruit length, fruit diameter, number of fruits, and weight of fruit per plant. The results of this research is the concentration of liquid organic fertilizer from the best fruits not found in this research but the concentration of 65 ml/l of liquid organic fertilizer can increase the growth and yield of chili plants on peat soil.
Indeks Kualitas Tanah Lahan Pasang Surut pada Tiga Tipe Penggunaan Lahan di Desa Punggur Kecil Kabupaten Kubu Raya
Authors: Vera Konselia D. , Umran Ismahan , Hayati Rita
Published: June 2024

The study was conducted in the Punggur Kecil Village, Kubu Raya Regency, on three types of land use those are langsat plantations, mixed cropping and rice fields.  Land use change or land conversion is one of the factor that decteasing soil quality. Land use changed that occurs in punggur kecil, reguires any research aim to determining the soil quality index on three types of land use, those are Langsat plantations, mixed crops and rice fields in the punggur kecil village sungai kakap, Kubu Raya District.  Soil sampling using a diagonal system at 3 study sites with 5 points. The amount of samples in the three types of land use are 15 samples. Research parameters include supporting parameters such as soil profile, structure, vegetation type, depth of ground water level, pyrite content and distance of observation location from river / sea. Soil physical properties include bulk density, moisture content in field capacity, total porosity and texture. Soil chemical properties include soil reaction (pH), N-Total, P-Available, K-exchangeble, Ca-exchangeble, Mg-exchangeble, Na- exchangeble, Base Saturation, Cation Exchange Capacity (CEC) and C-Organic. Biological properties include: earthworm population. Stages of research include determining the location of research sampling, sample analysis in the laboratory, determination of the minimum data set (MDS) with principal component analysis (PCA) as a weight index, scoring of soil indicators and determination of soil quality index. Data processing using microsof excel 2010 and statistical applications SPSS 16. The results showed langsat plantations have a soil quality index of 0.44 (medium criteria). Mixed crop land has a soil quality index value of 0.35 (low criteria). Rice fields have a soil quality index value of 0.35 (low criteria).
Urgensi Kompetensi Penyuluh Pertanian dalam Pemberdayaan Kelompok Tani Lada di Perbatasan Kalimantan Barat
Authors: Komariyati Komariyati , Kurniady Dedy , Nugraha Aditya
Published: June 2024

The Urgency of Agricultural Extension Competence in Empowering Pepper Farming Groups on the Border of West Kalimantan. The aim of the research is to describe the urgency of the competency of agricultural instructors in the context of empowering pepper farmer groups on the West Kalimantan border. The type of research is descriptive qualitative. Research data is primary and secondary data. Validate data by triangulating sources and methods. The data analysis technique uses interactive analysis. The results of the research conclude: (1) The target of the extension program is to increase the empowerment of pepper farmer groups, so that pepper farmers receive various information about pepper cultivation so that their production increases and at the same time their income increases; (2) Agricultural extension programs can be successful if they are based on the principles of community empowerment which include: Integrated Development, Human Rights, Sustainability, Empowerment, Self- Reliance, Organic Development, The Integrity of Process, Co-operation, and Participation; (3) The competence of extension workers has a very important contribution in determining the success of the extension program or empowerment of pepper farmers, because the competence of extension workers will increase the competence of farmers in the aspects of knowledge, skills and active participation in managing farmer groups.
Structure-activity relationship of inositol thiophosphate analogs as allosteric activators of Clostridioides difficile toxin B
Authors: Cummer Rebecca , Grosjean Félix , Bolteau Raphaël , Vasegh Seyed Ehsan , Veyron Simon , Keogh Liam , Trempe Jean-François , Castagner Bastien
Published: June 2024

Clostridioides difficile is a bacterium that causes life-threatening intestinal infections. Infection symptoms are mediated by a toxin secreted by the bacterium. Toxin pathogenesis is modulated by the intracellular molecule, inositol-hexakisphosphate (IP6). IP6 binds to a cysteine protease domain (CPD) on the toxin, inducing auto-proteolysis, which liberates a virulence factor in the cytosol. Here, we developped second-generation IP6 analogs designed to induce auto-proteolysis in the gut lumen, prior to toxin uptake, circumventing pathogenesis. We synthesized a panel of thiophosphate- and sulfate-containing IP6 analogs, and characterized their toxin binding affinity, auto-proteolysis induction as well as binding to physiological divalent cations. Our top candidate was soluble in physiological extracellular ion concentrations, unlike IP6. In addition, the IP6 analogs were more negatively charged than IP6, resulting in improved affinity and stabilization of the CPD, which enhanced toxin auto-proteolysis. Our data illustrate the optimization of IP6 with thiophosphate biomimetics which are more capable of inducing TcdB auto-proteolysis than the native ligand, warranting further studies in vivo.