bluuebunny/crossref_metadata_2025 huggingface dataset:
STUDY ON THE IMPLEMENTATION OF NETWORKING ACTIVITIES FOR BUSINESSES IN THE NORTH-EAST REGION OF ROMANIA
Authors:   “Ștefan cel Mare” University of Suceava, Faculty of Economic Sciences and Public Administration, Suceava, Romania, BUTNARIU Alina-Ramona , NASTASE Carmen-Eugenia ,   “Ștefan cel Mare” University of Suceava, Faculty of Economic Sciences and Public Administration, Suceava, Romania
Published: January 2022

Social networks are increasingly important for entrepreneurs, as they can support the process of discovering valuable opportunities, especially for innovative businesses. Communication and cooperation between various stakeholders involved in the entrepreneurial environment have been considered essential in business relationships, and networking activities have the ability to mediate these two components. However, the interaction between relevant actors does not naturally arise, but rather they are actively organized by business support structures. We propose a model for analyzing social activities through a pilot study conducted among 10 business support structures in 5 counties in the North-East region of Romania. The findings of the study are commented with regards to two main hypotheses. Obtained results support the idea that networking activities are sufficiently promoted, but still insufficiently developed throughout the region, providing the necessary premises for a larger study, including a wider range of respondents and an improvement of the research tools used.
SUSTAINABILITY OF THE SMALL BUSINESS ENVIRONMENT IN ROMANIA IN THE CONTEXT OF INCREASING ECONOMIC COMPETITIVENESS
Authors:   “Nicolae Bălcescu” Land Forces Academy, Sibiu, Romania, BĂTUȘARU Cristina Maria
Published: January 2022

Ensuring a sustainable management in the field of SMEs is an essential condition of the market economy and is the premise of an efficient and successful collaboration between the public and the private environment. The continuation of the structural reforms meant to support the mechanisms of the competitive economy represents an essential condition of the Romanian state in its social-economic development efforts. Considering the role of the SME sector in ensuring a favorable climate for the national economic progress, this paper addresses a quantitative and qualitative analysis of the small business sector in Romania, aiming to identify the main challenges that the Romanian state faced during the period 2008-2017. This analysis aimed to establish the main weaknesses and strengths that Romania has demonstrated during the period analyzed in order to outline a set of recommendations that the Romanian state should follow in implementing its policies in the SME sector, in order to be ensure sustainable and prospective economic development management.
IDENTIFICATION AND QUANTIFICATION OF PHENOLIC COMPOUNDS IN RED WINES
Authors:   Lucian Blaga University of Sibiu, ȘANDRU Daniela , PANAITESCU Magda ,   Universidad ”Latina” de Panama, Rep. de Panama
Published: January 2022

The aim of this paper is that of identifying and quantifying different phenolic compounds known and appreciated for their antioxidant action from five red wines from west side of Romania. For the determinations were used HPLC methods, the samples were done in cycles of three for better results. Phenolic acids that kept the interest have different value that fits between 1,3007 mg/L (elagic acid) and 19,3315 (t-cafftaric acid), some various flavonoids (flavones, flavonols and flavanols) their value were recorded between 0,9997 mg/L (apigenin) and 56,1617 mg/L (catechin) and the stilbens namely the resveratrol has reach the maximum value of 8,1427 mg/L. The phenolic compounds that were determined lead to the conclusion that autochthonous wines are rich in antioxidant elements, and they are recommended for prophylactic consumption.
MICROBIOLOGICAL AND GC-MS ANALYSIS OF HORSERADISH ROOTS (ARMORACIA RUSTICANA)
Authors:   Lucian Blaga University of Sibiu, ȘANDRU Daniela
Published: January 2022

This paper aims to address the possibility of contamination of the plants used as spices – horseradish (Armoracia rusticana) with microorganisms, but also to investigate their composition from the point of view of volatile compounds by GC-MS methods. Their initial use was probably a flavoring agent, which then demonstrated antimicrobial properties by maintaining fresh foods for longer periods and improving the health of those who regularly consume spices It has been found that horseradish has a low number of bacteria, yeasts and molds of 1-14 CFU / g, in contrast, there are significant amounts of volatile compounds. The most significant values were obtained for isothiocyanates (Isobutyl ITC, sec-butyl ITC, benzyl ITC, 3-butenyl ITC, 3-methylbutyl ITC), which range between 33.1835 g / g and 47.45 g / g (3-hydroxy-4,5-dimethyl-2 (5H) -furanones) with values ranging from 0.2317 g / g to 1.1217 g / g and methoxypyrazines, 5103 g / g and 1,525 g / g (3-isobutyl-2-methoxypyrazine, 3-isopropyl-2methoxypyrazine). All these elements contribute to the formation of the sensory and aromatic characteristics of horseradish, but also have beneficial effects on the human body.
VOLATILE COMPOUNDS IDENTIFIED AND QUANTIFIED IN MOLDOVA’S WINES
Authors:   “Stefan cel Mare” University of Suceava, Romania, REBENCIUC Ioana , TIȚA Ovidiu ,   Lucian Blaga University of Sibiu, POPESCU Diana Ionela ,   National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Ramnicu Valcea, Romania
Published: January 2022

In this paper we studied and characterized four wines from the grape varieties Busuioaca de Bohotin, Feteasca neagră, Muscat Ottonel, Pinot gris, harvests of 2016, 2017, 2018, coming from the: Bohotin, Cotești, Cotnari, Huși and Iasi vineyards. The GC-MS methods were utilized to identifing and quantifing the volatile compounds of thies wines.The results obtained being grouped into three categories, namely: higher alcohols, volatile acids and esters. It was found that the higher alcohols have minimum values between 195.07 mg / L and maximum values of 257.2 mg / L in Huși and Bohotin for Feteascea black wine, the volatile acids do not exceed 17.92 mg / L in Cotnari in Muscat wine Ottonel and the esters reach values of 204.78 mg / L at the Cotești vineyard in the case of Fetească neagră wine. From the results obtained we distinguish the Feteasca neagră wine with the optimal ratio between the three monitored indicators.
MOLDOVA’S WINES IN THE CONTEXT OF CLIMATE CHANGE
Authors:   ", REBENCIUC Ioana ,   Stefan cel Mare",   University of Suceava, Romania, TIȚA Ovidiu ,   Lucian Blaga University of Sibiu, Romania
Published: January 2022

The aims of this work is to characterize the physico-chemical characteristics of grape varieties and wines from the wine region of Moldova under current climate change conditions. The musts from the varieties Busuioaca de Bohotin, Fetească neagră, Muscat Ottonel and Pinot gris showed values of sugars between 198 g / L and 254 g / L, acidity 5.04 g / L H2SO4 and 7.92 g / L H2SO4, the total nitrogen was between 0.91 g / L and 1.54 g / L. The wines obtained were characterized by alcohol concentration and sulfur dioxide with values falling within standards, total acidity on average lower than the musts with one unit, and the dry nonreducing extract ranged from 22.1 g / L to 32, 4 g / L. It has been found that climate change, especially rising temperatures, leads to an accumulation of sugars and extract in musts and wines from the Moldova Vineyards.
INNOVATION, A PILLAR OF SUSTAINABLE DEVELOPMENT IN ROMANIA
Authors:   “Nicolae Bălcescu” Land Forces Academy, Sibiu, Romania, RĂDOIU Alina
Published: January 2022

The whole world is constantly changing. We are going through a period marked by challenges that will directly influence humanity. The phenomenon of globalization has come with benefits but also with negative side effects, creating uncertainties and inequalities in social, economic, political and environmental. The great crisis of 2008-2009 had a major negative impact on the economies of the world, and it is still difficult to recover the losses caused. At present, there is an increased emphasis on social and environmental issues, aiming as much as possible towards a sustainable society. With a decade left, the world is working to meet the 17 United Nations Sustainable Development Goals by 2030. But the challenge is huge, given the current difficult geopolitical and geoeconomic context. The requirements for sustainable development need excellence in innovation. This paper aims to present Romania’s current position on the European map of innovation, as well as perspectives that can influence the future evolution of the national economy in the context of sustainable development.
DIGITALIZATION – SUSTAINABLE DEVELOPMENT CONVERGENCE: METRICS AND EFFECTS IN ROMANIA
Authors:   Land Forces Academy Nicolae Balcescu, Sibiu, Romania, Stan Sebastian Emanuel , Oprean-Stan Camelia ,   Lucian Blaga University of Sibiu, Țîțu Aurel Mihail ,   Lucian Blaga University of Sibiu
Published: January 2022

Sustainability and digitalization both require major transitions in our world and the way we imagine them. Digitalization is considered to be the engine that alters sustainability. However, it is not yet known whether and to what extent this digital transformation facilitates or hinders the development of a more sustainable world. The aim of this paper is to shed light on the implications of digitalization for sustainable development in Romania and to provide answers to the following questions: how does digitalization affect the most important pillars of sustainability? How can digital technology help to achieve the Sustainable Development Goals in the next period? These key issues are of immediate practical relevance and therefore need to be addressed by researchers and decision-makers alike. In order to achieve this objective, this research examines the relationship between digitalization and sustainable development, in the specific case of Romania, and examines how digital performance affects the main components of sustainable development, pursued on the basis of the following sustainable development objectives: non-poverty, good health and well-being, gender equality, decent work and economic growth, At the same time, it examines the most important measures for evaluating the level of digitalization of countries (more specifically, the Digital Economy and Society Index DESI methodology) and sustainable development at the macro-economic level (through the Sustainable Development Goals Index SDGI components).
RESEARCH ON THE EVOLUTION OF SENSORY AND PHYSICO-CHEMICAL CHARACTERISTICS OF BUTTER WITH THE ADDITION OF MINT AND PEPPERMINT
Authors:   Lucian Blaga University of Sibiu, Tiţa Mihaela Adriana , Butoi Laurenţiu ,   "Terezianum" Technological High School of Food Industry
Published: January 2022

This research aims to develop a new technology for the enrichment of butter with mint oil and mint oil which will improve its nutritional quality and may become one of the consumer’s preferences. Also mint has an aromatic, characteristic odor with stinking, with a pungent, refreshing taste,, and mint oil contains numerous minerals and nutrients including iron, manganese, magnesium, calcium, folic acid, potassium and copper, vitamin A and C. The butter obtained with the addition of mint and mint oil has been subjected to a comparative test with a sample of blank butter and analyzed for a period of 30 days, analyzing changes in sensory and physico-chemical.
MANAGEMENT OF URINARY TRACT INFECTIONS
Authors:   Universidad ”Latina” de Panama, Rep. de Panama, PANAITESCU Magda , ȘANDRU Daniela Maria ,   Lucian Blaga University of Sibiu, Romania
Published: January 2022

Urinary tract infection (UTI) is one of the most common pathological conditions. The positive prediction for UTI of clinical symptoms oscillates around 0.5 even lower in the case of urethral syndrome in women. An appreciable number of UTIs evolve asymptomatically, and the child under the age of 2 years the symptoms of UTI are nonspecific. The total number of germs in the urine is determined and expressed in UCF / ml. No colonies appeared after 18-24 hours of incubation, so the negative result was released (under 1000UCF / ml or under 103 CFU / ml).
INVESTIGATION ON CAUSES AND EFFECTS OF WATERLOGGING IN THE SOUTHERN PART OF BANGLADESH
Authors:   Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Bangladesh, Rahaman Md. Shiblur , Hossain Nazmul ,   Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Bangladesh, Nurain Afrida ,   Department of Environmental Sciences, Jahangirnagar University, Bangladesh, Sarker Protima ,   School of Environmental Science, University of Shiga Prefecture, Hikone, Japan, Ichihara Sahoko ,   Department of Environmental and Preventive Medicine, Jichi Medical University School of Medicine, Japan
Published: January 2022

Noakhali Pourashava is an important municipality in southern Bangladesh, faces severe waterlogging problems every year during the monsoon period. The present study aimed to investigate the major causes of waterlogging and its negative effects on life, from the viewpoint of people residing in different areas of Noakhali Pourashava, various government, non-government, development organizations as well as various stakeholders including experts. It has been found that Noakhali Pourashava experienced waterlogging during peak monsoon season in ward no. 1, 2, 4, 5, and 8. Most of the inhabitants/respondents of the Noakhali Pourashava claimed that lack of drainage facility; excessive rainfall; inadequate, low capacity and conventional drainage system; natural siltation; improper waste management; absence of proper inlets and outlets; and blockage and encroachment of existing drainage are responsible for waterlogging. It has ascertained that the water logging becomes a burden for the inhabitants of the Pourashava and creating adverse effects on livelihood, society, infrastructure, economy and environment. Other notable adverse effects of waterlogging are disruption of traffic movement and normal life, structures and infrastructure damage and loss of income potentials with a lot of sufferings. The stagnant water acts as a breeding site for the vectors of various diseases and becomes a health hazard to people residing in the waterlogged area. The current study suggests that close coordination among Pourashava authorities, local government agencies and a strong collaboration between public and private sectors as well as local people participation are essential for solving the waterlogging problem effectively and sustainably.
MARKETING ASPECTS OF YOGHURT ENHANCED WITH TAPIOCA
Authors:   ", Moga Valentina Mădălina ,   Terezianum",   Technological High School of Food Industry, Tița Mihaela Adriana ,   Lucian Blaga University of Sibiu
Published: January 2022

This research presents aspects regarding the introduction on the Romanian market of tapioca yoghurt. This product has a better texture than classic yoghurt or than yoghurt with added milk powder (the main additive used to improve the texture of the yoghurt in Romania). Tapioca is a neutral-tasting vegetable powder and it is used in many sectors of the food industry, especially as a substitute for various gelling agents, but also due to the fact that it does not contain gluten and any other known allergen. We have identified the main competitors on the yogurt market but also the potential customers. To understand the trends on the Romanian yoghurt market and consumers interest in trying the product; consumers attitude towards a new product, we used a survey. The data provided by the survey were processed to establish the SWOT Analysis of the product which is used to determine the strategic position of the product and The Elements of the Marketing Mix that are important for market growth.
THE ANTIBACTERIAL POTENTIAL OF ESSENTIAL OILS ON PROPIONIBACTERIUM GRANULOSUM STRAINS
Authors:   Lucian Blaga University of Sibiu, Șandru Daniela Maria , Panaitescu Magda ,   Universidad ”Latina” de Panama, Rep. de Panama
Published: January 2022

Gram-positive bacteria Propionibacterium granulosum lives on human skin along with other propionibacteria on the skin, these bacteria are especially important to have healthy skin and occupy some ecological niches. These niches are populated by some pathogenic bacteria. Propionibacterium granulosum bacteria produce some fatty acids that have low molecular weight, bacteriocins and other substances that inhibit some bacteria. The aim of this research is to investigate the microbiological evolution of some essential oils on Propionibacterium granulosum strains. It is observed that the highest values are recorded when 20 µL of essential oil is used.
ON THE LOGIC OF PRAXIOLOGICAL PARADIGMS
Authors:   Romanian Academy, Bucharest, Romania, Dinga Emil
Published: January 2022

The paper aims to provide a brief discussion regarding the concept and typology of paradigm, as it is used in the philosophy of science. To this end, a set of sufficiency predicates are proposed that characterize any generic paradigm, based on which a typology of possible categorial paradigms is built up. The category of praxiological paradigm is then logically and historically examined using a logical ”filter” with five parameters, including the sustainable paradigm (as barely sprouted today) and the viability paradigm (the most desirable one o be got). The study is carried out from the conceptual and philosophical perspective only.
Evliya Çelebi'nin İzinde Silifke'den Erdemli'ye
Authors: UZUN Pınar , ÜLKÜ Candan
Published: January 2022

Türkiye ve hatta tüm dünyadaki en önemli seyyahlardan biri olan Evliya Çelebi, neredeyse ömrü boyunca seyahat etmiş ve bu seyahatler sonucunda elde etmiş olduğu bilgileri on ciltlik “Seyahatname” adlı eserinde toplamıştır. 17. yüzyılda Osmanlı Devleti ve komşu ülkelerini gezen Evliya Çelebi, sözlü ve yazılı kaynaklardan aldığı bilgilerle, gözlem ve yorumlarını harmanlayarak yaşadığı yüzyılın tarihi, kültürü, sosyal yapısı, yaşayış biçimi ve mimari özellikleri gibi hiçbir kaynakta eşi benzeri olmayan bilgileri kaydederek bizlere ulaşmasını sağlamıştır. Seyahatname’nin 9. cildinde 21 Mayıs 1671 tarihinde hac vazifesi sebebiyle yola çıkan Evliya Çelebi, bu yolculuk sırasında daha önce görmeye fırsat bulamadığı Batı Anadolu topraklarını ve devamında Akdeniz kıyılarını ziyaret etmiştir. Bu çalışmada Evliya Çelebi’nin seyahati bir güzergâh olarak takip edilerek günümüzde Mersin ili sınırları içerisinde yer alan Silifke Kalesi, Ak Liman Kalesi, Kızkalesi ve çevresindeki yerleşim yerleri ile yapılar hakkında verdiği bilgiler farklı kaynaklarda verilen bilgilerle karşılaştırılarak, Evliya Çelebi’nin Mersin hakkındaki aktarımlarının doğruluğu, önemi ve eksik yanları tartışılmıştır.
Osman Bey’in Sevk ve İdare Anlayışının Stratejik Yönetim Kapsamında Değerlendirilmesi
Authors: KESKİN Uğur
Published: January 2022

Bu makalede, Osmanlı İmparatorluğunun kurucusu olan Osman Bey’in idare anlayışı ve faaliyetlerinin, günümüz çağdaş stratejik yönetim anlayışı bağlamında değerlendirilmesi amaçlanmaktadır. Bütün yönetsel uygulamaların olduğu gibi, Osman Bey’in gerçekleştirdiği faaliyetlerin de, teorik düzlemde belirli karşılıkları bulunmaktadır. Makalede, Osman Bey’in yönetsel faaliyetlerinin, teorik bağlamda stratejik yönetim ile örtüşen yönlerini ortaya koyan değerlendirmelere yer verilmektedir. Nitel araştırma yöntemlerinden yorumlayıcı fenomenolojik yaklaşımın benimsendiği makalede, Osman Bey’in idari ve yönetimsel anlamdaki faaliyetleri, bilimsel nitelikli açıklamalara dönüştürülmüştür. Farklı tarihsel kaynaklarda yer verilmiş bulunan Osman Bey’in büyüme ve bütüncül yaklaşım gibi yönetsel faaliyetlerinin temelini nelerin oluşturduğu, çağdaş stratejik yönetim literatürü kapsamında ele alınarak günümüz stratejik yönetim yaklaşımları ile ilişki kurulmaya çalışılmıştır.
Canım Sıkılıyor! Can sıkıntısı, Sosyotelizm ve Gelişmeleri Kaçırma Korkusu
Authors: SEPETÇİ Pınar , ÖZDEMİR Seyhan , SEVER Melih
Published: January 2022

Araştırmalar özellikle Covid salgını ile birlikte teknoloji bağımlılığının artışta olduğunu ve can sıkıntısı gibi etmenlerin bağımlılık riskini artırdığını göstermektedir. Bu çalışmada da üniversite öğrencilerinin can sıkıntısı, gelişmeleri kaçırma korkusu (GKK) ve sosyotelizm (yüzyüze görüşme yaparken telefonla ilgilenmek) arasındaki ilişki incelenmeye çalışılmıştır. Araştırmanın verileri 309 üniversite öğrencisinden elde edilmiştir. Araştırmada çevrimiçi anket tekniği kullanılmış olup, hazırlanan anket formu kolayda örnekleme yöntemi kullanılarak uygulanmıştır. Verilerin analizinde Jamovi programı kullanılmıştır. Yapılan analizler sonucunda, can sıkıntısı, GKK ve sosyotelizm değişkenleri arasında pozitif yönlü anlamlı bir ilişki olduğu tespit edilmiştir. Can sıkıntısı eğiliminin GKK ile sosyotelizm arasında aracılık rolü oynadığı bulunmuştur. Teknolojik ilerlemenin getirdiği yan etkilerin daha farklı gruplar üzerindeki etkisinin de değerlendirilmesi önerilmektedir.
May Your Liver Come Out Of Your Mouth! A Corpus Based Study: Curse Structures in Turkish Utterances
Authors: ÜNSAL ŞAKİROĞLU Hülya
Published: January 2022

Corpus can be described as a database for the purpose of research. Corpus studies have now been used in nearly every field of linguistics since the 1970s and gradually becoming a part of linguistic terminology. In present study cursing elements of Turkish Language were searched employing Turkish National Corpus. Cursing is an interesting subject matter that attracts several areas of linguistics not only micro fields such as, semantics, and syntax but also macro divisions such as psycholinguistics, discourse and pragmatics. In this study, we attempt to investigate the unique features of the curse utterances in Turkish and variations across regions, to understand if social variables such as age, gender and education level have influence on what cursing structures are used, and to find out whether survey results and national corpus are consistent in curse utterances. Data was collected via Turkish National Corpus and survey was developed based on array of research questions and applied to 170 participants. The findings derived from corpus and survey indicate similar features as particular curse words such as beddua (cursing), kahretsin (damn) and bela (trouble-evil) observed more often than kargış (imprecation), ilenme (cursing), mahvetsin (ruin). In parallel with the survey result, the most frequently used curse utterances in the Turkish National Corpus were Allah belanı versin, Allah cezanı versin, kahretsin (damn you, God punish you, damn it). In addition, distinctive curse structures varying from region to region were conceived.
Risks in Cold Chain Operations in Healthcare Logistics and Applicable Technological Solutions
Authors: DÜZGÜN Murat , KIZILIRMAK Berivan
Published: January 2022

Millions of tons of temperature-sensitive products are handled by leveraging the cold chain logistics from the point of production to the point of consumption. Cold chain, an important sub-branch of logistics, is a field which allows for the maintenance of the right quality throughout the supply chain and entails special expertise and precision for its management. The operational process becomes increasingly important in delivering products to consumers without any break in the cold chain. The pharmaceutical industry, which places human health at the forefront, includes specific products that require the cold chain logistics process, and entails special equipment and skilled staff to maintain the quality and effectiveness of such products without any break in the logistics process. Considering from the manufacturer's perspective, a potential break in the chain means loss of revenue and reputation, in other words, customer loss. The study is intended to determine the major risks that may arise in all processes related to drugs (insulins, vaccines, etc.) from the raw material to the consumer within the cold chain management, and to suggest technological and practical solutions to mitigate any potential risks and improve the existing conditions. To provide an understanding of storage conditions, particularly of solutions both at retail and customer levels, a survey was conducted with pharmacists and solution suggestions were presented with the descriptive findings assessed.
ĐÁNH GIÁ GIÁ TRỊ CỦA KỸ THUẬT CHỤP BẠCH MẠCH TRUNG TÂM SỐ HÓA XÓA NỀN QUA HẠCH BẸN
Authors: Triệu Quốc Tính , Nguyễn Ngọc Cương , Phạm Hồng Cảnh , Lê Tuấn Linh , Bùi Văn Lệnh
Published: January 2022

Mục tiêu: Mô tả kỹ thuật và đánh giá kết quả hình ảnh chụp số hóa xóa nền đường bạch mạch trung tâm qua hạch bẹn.Đối tượng và phương pháp: Nghiên cứu chùm ca bệnh trên 37 bệnh nhân được chụp số hóa xóa nền đường bạch mạch trung tâm qua hạch bẹn.Kết quả: Nghiên cứu được thực hiện trên 37 bệnh nhân (11 nam, 26 nữ), tuổi trung bình là 56. Kỹ thuật được thực hiện thành công ở tất cả các bệnh nhân (100%), 30% bệnh nhân có biến thể giải phẫu đường bạch huyết trung tâm, vị trí rò được xác định ở 31/37 trường hợp chiếm 84%. Thời gian trung bình để nhìn thấy bạch huyết mục tiêu là 35.3 ± 20.2 phút.Kết luận: Chụp bạch mạch số hóa xóa nền qua hạch bẹn là thủ thuật an toàn, cung cấp hình ảnh trực quan về giải phẫu đường bạch huyết trung tâm, xác định vị trí rò bạch huyết và hướng dẫn can thiệp bạch mạch qua da.
ĐÁNH GIÁ VAI TRÒ CỦA XẠ HÌNH XƯƠNG BA PHA VỚI MÁY SPECT/CT TRONG THEO DÕI BỆNH NHÂN SAU THAY KHỚP NHÂN TẠO TẠI BỆNH VIỆN ĐÀ NẴNG
Authors: Phạm Duy Khiêm , Nguyễn Văn Minh , Nguyễn Thị Bình
Published: January 2022

Mục tiêu nghiên cứu: Mô tả đặc điểm lâm sàng và cận lâm sàng của bệnh nhân sau thay khớp nhân tạo được chụp xạ hình xương ba pha tại Bệnh viện Đà Nẵng và đánh giá vai trò của phương pháp xạ hình xương ba pha với máy SPECT/CT trong theo dõi bệnh nhân sau thay khớp nhân tạo.
Đối tượng và phương phápnghiên cứu: 32 bệnh nhân đã được thay khớp nhân tạo được chụp xạ hình xương ba pha trên máy SPECT/CT Hawkeye 4 của hãng GE tại khoa YHHN, Bệnh viện Đà Nẵng. Mô tả cắt ngang, theo dõi dọc, hồi cứu kết hợp tiến cứu.Kết quả: Tuổi trung bình: 69,88 ± 7,80. Tỷ lệ nữ/nam là 23/9. Đau là triệu chứng thường gặp nhất. Số lượng bạch cầu và nồng độ CRP đa số đều tăng. Hình ảnh X-quang hầu như không có thay đổi bất thường. Hình ảnh lỏng khớp chiếm tỷ lệ cao nhất. Xạ hình khớp gối hầu hết đều có bất thường. Độ nhạy: 83,33%. Độ đặc hiệu: 75%. Độ chính xác: 81,25%. Giá trị tiên đoán dương: 90,91%. Giá trị tiên đoán âm: 60%.Kết luận: Xạ hình xương ba pha là một phương pháp đơn giản, dễ thực hiện, có độ nhạy và giá trị tiên đoán dương cao trong theo dõi bệnh nhân sau thay khớp nhân tạo.
VAI TRÒ CỦA CỘNG HƯỞNG TỪ ĐÀN HỒI 3 TESLA TRONG ĐÁNH GIÁ ĐỘ XƠ HÓA GAN
Authors: Nguyễn Thị Kim Yến , Lê Văn Phước
Published: January 2022

Mục tiêu: Khảo sát độ xơ hóa gan trên cộng hưởng từ đàn hồi (CHTĐH) và mối liên quan giữa CHTĐH với mô bệnh học trong đánh giá độ xơ hóa gan ở bệnh nhân viêm gan mạn.Phương pháp: Nghiên cứu hồi cứu, mô tả, khảo sát CHTĐH gan trước sinh thiết ở 20 bệnh nhân viêm gan mạn tại bệnh viện Chợ Rẫy từ tháng 11/2019 đến tháng 5/2021.
Kết quả: Tuổi trung bình trong nghiên cứu là 51,4 tuổi. Có 100% bệnh nhân là nữ. Độ cứng gan trung bình (đơn vị kilopascal = kPa) trong nhóm nghiên cứu tương ứng với mỗi nhóm theo phân độ Metavir lần lượt là 3,1 ± 0,2 (F1, n = 8), 3,6 ± 0,1 (F2, n = 11) và 5,3 (F3, n = 1). Không có trường hợp nào có độ cứng gan F4. Hệ số tương quan Spearman là 0,63 (p=0,003) cho thấy có sự tương quan thuận, mạnh giữa độ cứng gan trên CHTĐH với mức độ xơ hóa gan theo Metavir trên mô bệnh học. Dựa vào đường cong ROC, với điểm cắt là 3,7 kPa có thể dự đoán xơ hóa gan có ý nghĩa (≥ F2) với độ nhạy 58%, độ đặc hiệu 100%. Chúng tôi chưa tìm được giá trị kPa trong dự đoán xơ hóa gan ≥ F3 và F4.Kết luận: CHTĐH là một kỹ thuật mới, an toàn, không xâm lấn, có thể thay thế sinh thiết để đánh giá giai đoạn xơ hóa gan.
ĐÁNH GIÁ KẾT QUẢ ĐIỀU TRỊ XUẤT HUYẾT TIÊU HÓA DO GIÃN TĨNH MẠCH DẠ DÀY BẰNG PHƯƠNG PHÁP NÚT MẠCH XUYÊN GAN TẠI BỆNH VIỆN ĐA KHOA TỈNH THANH HÓA
Authors: Lê Văn Cường , Lê Quang Hòa , Quách Lương Thiện , Dương Quang Hiệp
Published: January 2022

Mục đích: Đánh giá kết quả điều trị xuất huyết tiêu hóa do giãn tĩnh mạch dạ dày bằng phương pháp nút mạch xuyên gan số hóa xóa nền trong tại Bệnh viện Đa khoa tỉnh Thanh hóaĐối tượng: 31 bệnh nhân xơ gan có giãn tĩnh mạch dạ dày được nút mạch xuyên gan tại bệnh viện đa khoa tỉnh Thanh Hóa từ 04/2020 đến 09/2020.Kết quả: Tuổi trung bình 55,37 ± 8,95. Bệnh nhân lớn tuổi nhất là 78 tuổi, trẻ nhất là 36 tuổi. 19 bệnh nhân có triệu chứng xuất huyết tiêu hóa (61,2%), 12 bệnh nhân không có triệu chứng (38,8%). 24 bệnh nhân đang từng có triệu chứng xuất huyết tiêu hóa (77,4%). Đa số bệnh nhân có giãn tĩnh mạch phình vị độ 3 khi nội soi dạ dày (90,3%). Số lượng hồng cầu và huyết sắc tố sau can thiệp tăng lên so với trước can thiệp. 24 bệnh nhân có lồng thông (shunt) vị thận (77,4%). Đa phần sau can thiệp các bệnh nhân tiến triển tốt, chiếm 96,8%.Kết luận: Nút mạch xuyên gan điều trị xuất huyết tiêu hóa do giãn tĩnh mạch dạ dày là phương pháp an toàn và hiệu quả ở bệnh nhân xơ gan.
Perspektif dan Pendekatan Teori Manajemen yang telah berkembang Sepanjang Sejarah
Authors: Maulana Gilang , Anwar US Kasful
Published: January 2022

Abstract: Theory is a thing that is seen as monotonous and hinders fieldwork for people who are used to the field, but the real purpose of theory is to determine the professional nature of workers, just as management theory is needed to manage worker activities in order to get work agreements. which is good and does not burden one side, both from the workers and the company. This journal contains the stages of development of management theory in the world, compiled based on references that are owned even though they are limited

 

 

Keywords: Management, Workers, Professionalism
Features of generation, migration and accumulation of hydrocarbons in the eastern part of the Skythian plate
Authors:   Sergo Ordzhonikidze Russian State University for Geological Prospecting,Moscow, Russia, Kerimov V.Yu. , Yandarbiev N.Sh. ,   Lomonosov Moscow State University, Moscow, Russia, Mustaev R.N. ,   Sergo Ordzhonikidze Russian State University for Geological Prospecting,Moscow, Russia, Alieva S.A. ,   Azerbaijan State Oil and Industry University, Baku, Azerbaijan
Published: January 2022

The article shows the main spatio-temporal regularities of the development of the processes of generation, migration and accumulation of hydrocarbon fluids in the eastern part of the Scythian plate. The authors studied the features of the generationaccumulation hydrocarbon systems of the northern platform side - the Karpinsko-Mangyshlak and East Ciscaucasian oil and gas regions based on the application of technologies of basin analysis and modeling of hydrocarbon systems. The research results indicate that the following hydrocarbon systems are distinguished in the sedimentary cover of the eastern part of the Scythian plate: Jurassic, Cretaceous, Paleocene-Eocene, and Oligocene-Miocene systems. Based on the results of the studies and modeling, the main directions of further prospecting and exploration work in the eastern part of the Scythian plate were determined. The study area was differentiated by the nature of the predicted oil and gas content, the age of the promising complexes and the confinement to tectonic structures and zones. Keywords: generation; migration; accumulation; hydrocarbons; Scythian plate; hydrocarbon systems; basin analysis; modeling; source rocks.
On the reasons for the complication of field preparation hard-to-recover oils during technogenic impact on the formation
Authors:   Atyrau Branch of KMG Engineering, Atyrau, Kazakhstan, Serkebayeva B.S.
Published: January 2022

The article is devoted to the analysis of the field preparation of hard-to-recover oils on the example of a field in Kazakhstan. On the basis of laboratory and field studies, the physicochemical properties of oil emulsions were studied, the characters of the emulsion were identified by the type of natural stabilizers, the group composition, their aggregate stability, as well as rheological features were determined. In the article the main reasons that complicate the processes of field preparation of hard-to-recover, rheologically complex oils were analyzed and identified. Some ways of improving the efficiency of field treatment of high-viscosity oils in the presence of intensive technogenic impact on the formation in order to increase the oil recovery factor are also indicated. Keywords: oil-water emulsion; hydrogen sulfide; mechanical impurities; intermediate layer; sulfate-reducing bacteria; thionic bacteria; dispersed composition; aggregate stability; iron sulfide; demulsifier; stabilizer.
Application of polymer compositions in repair and insulation works in wells
Authors:   «NizhnevartovskNIPIneft» OJSC, Nizhnevartovsk, Russia, Mukhametshin V.G. , Dubinsky G.S. ,   Ufa State Petroleum Technical University, Ufa, Russia; Strategy Research Institute of the Republic of Bashkortostan, Ufa, Russia
Published: January 2022

The state of Russia's resource base has a downward trend. In the light of the need to keep the economic indicators not lower than the achieved ones, the emerging problems in the production of hydrocarbons require to solve them are use of new methods. Reducing the volume of associated water, maintaining the environmental safety of oil production while maintaining and even reducing the cost of oil production, due to new technologies and materials, are urgent tasks. For issues of reliable restoration of the technical condition of wells and the limitation of water inflow are this work is devoted. The technology based on the use of a modified polymer water-insulating composition is presented. Analytical and field studies were conducted. The technology and the polymer composition have shown the possibility of application during water inflow restriction and repair and insulation works. Keywords: repair and insulation works; water shutoff; polymer composition; modification of the composition
New «green» inhibitors of gas hydrate formation for the oil and gas industry based on polysaccharides
Authors:   Ufa Institute of Chemistry UFRC RAS, Ufa, Russia, Dokichev V.A. ,   Ufa State Aviation Technical University, Ufa, Russia, Voloshin A.I. ,   Ufa State Aviation Technical University, Ufa, Russia, Nifantiev N.E. ,   N.D.Zelinsky Institute of Organic Chemistry of the RAS, Moscow, Russia, Egorov M.P. ,   N.D.Zelinsky Institute of Organic Chemistry of the RAS, Moscow, Russia, Kireeva D.R. ,   Ufa Institute of Chemistry UFRC RAS, Ufa, Russia, Isakov A.V. ,   Ufa State Aviation Technical University, Ufa, Russia
Published: January 2022

The thermobaric conditions for the formation of gas hydrates in the presence of the sodium salt of carboxymethylcellulose, dextran, and arabinogalactan were studied in a quasi-equilibrium thermodynamic experiment. It is established that polysaccharides slow down the rate and change the conditions of gas hydrate formation of a mixture of natural gases, showing the properties of a thermodynamic and kinetic inhibitor with technological efficiency exceeding methanol by 170-270 times when used in the same dosages. The results of the development of a «green» synergistic inhibitor of gas hydrate formation «Glycan RU» on their basis are presented, which includes a combination of thermodynamic and kinetic inhibitors. Pilot field tests of «Glycan RU» were carried out at the wells of the Priobskoye, Prirazlomnoye, Ombinsky, Zapadno-Ugutskoye oilfields. It was found that at dosages of 1000 g/m3 and 500 g/m3, there is no formation of hydrate plugs in the annulus. «Glycan RU» is recommended for industrial use by the technology of periodic injection and/or continuous dosing through wellhead dispensers. Keywords: carboxymethylcellulose; dextran; arabinogalactan; polysaccharides; «green» inhibitor of gas hydrate formation; «Glycan RU».
Estimation of the reliability of determination of filtering parameters of productive formations using multi-dimensional regression analysis
Authors:   Perm National Research Polytechnic University, Perm, Russian Federation, Martyushev D.A. , Ponomareva I.N. , Galkin V.I. ,   Perm National Research Polytechnic University, Perm, Russian Federation
Published: January 2022

Determination of reliable values of filtration parameters of productive strata is the most important task of monitoring the processes of developing reserves. One of the most effective methods for solving the problem is hydrodynamic testing of wells using the pressure recovery method, as well as modern methods - the pressure stabilization method and the method based on production analysis (Decline Analyze). This article is devoted to the assessment of the reliability of these three methods in determining the filtration parameters of terrigenous and carbonate productive deposits of oil fields in the Perm Krai. To solve the problem, multivariate regression analysis was used. A series of multidimensional mathematical models of well flow rates was built using filtration parameters determined for each of the methods. It is proposed to consider the filtration parameters included in the models with the maximum statistical estimates of performance as the most reliable. With regard to the fields under consideration, it was found that in terrigenous reservoirs, all three methods demonstrate stable results. In carbonate reservoirs, reliable values of filtration parameters are determined by processing pressure build-up curves. Pressure stabilization and production analysis methods show less robust results and require additional research in order to develop sound recommendations for their practical application. Keywords: permeability; skin factor; pressure stabilization curve; decline analyze; liquid flow rate; geological and technological parameters; oil deposit; carbonate deposits.
Some issues of ensuring the stability of the walls of directional wells and preventing the absorption of process fluids
Authors:   Ufa State Petroleum Technical University, Ufa, Russia, Popov A.N. , Ismakov R.A. ,   Ufa State Petroleum Technical University, Ufa, Russia, Yakhin A.R. ,   Ufa State Petroleum Technical University, Ufa, Russia, Mukhametgaliev I.D. ,   Ufa State Petroleum Technical University, Ufa, Russia
Published: January 2022

Most of the main types of complications in the process of drilling wells, such as collapses, taluses, collapses of the walls, the formation of caverns, etc., are associated with external mechanical and hydrodynamic effects on the walls of the wellbore. Therefore, ensuring the stability of the borehole walls is one of the urgent and difficult technological formation fluid pressure on mechanical processes in rocks when they are opened with a directional well, especially of horizontal wells. This article provides solutions to problems associated with hydraulic fracturing of a well and the condition of its prevention, calculation of generalized stresses in the rock formation for inclined well. As a result of this calculations, the necessary data are obtained for making a decision on the density of the drilling fluid to drilling the considered interval of rocks, as well as for making other technological decisions. The given calculation formulas make it possible to fully evaluate the effect of the formation fluid pressure on the mechanical processes in the rocks when they are opened by a horizontal well. Keywords: hydraulic fracturing; blade bit; steel ball-shaped toothed bit; polycrystalline diamond bit; laser drilling; impact rope drilling; rotary drilling.
Justification of necessity to consider well interference in the process of well
Authors:   «TatNIPIneft» PJSC «Tatneft» named after V.D.Shashin, Bugulma, Russia, Khakimzyanov I.N. ,   Ufa State Petroleum Technological University, Ufa, Russia, Mukhametshin V.Sh. ,   Ufa State Petroleum Technological University, Ufa, Russia, Bakhtizin R.N. ,   Ufa State Petroleum Technological University, Ufa, Russia, Lifantyev A.V. ,   «TatNIPIneft» PJSC «Tatneft» named after V.D.Shashin, Bugulma, Russia, Sheshdirov R.I. ,   «TatNIPIneft» PJSC «Tatneft» named after V.D.Shashin, Bugulma, Russia
Published: January 2022

The paper discusses results of the unique field-scale experiment on halving of active wells and increase of pressure differential at bottomholes of active wells in the Bavlinskoye oil field. With a view to assess the effect of well interference between shut-in and active wells, two scenarios of oil flow lines in the reservoir, shut-in scenario and do-nothing scenario, were modeled. The numerical computation demonstrated that increase of pressure differential at an early stage of development can maintain the obtained level of production with a less number of free-flowing wells. It was also found that an optimal well pattern has to be used at an early stage of development. In this case, oil losses are lower vs. infill drilling at the late stage of development. In the latter case, high water cut challenges economic production, which was the case with half of re-entry experimental wells. Keywords: free-flow production; increase of differential pressure; field-scale experiment; well pattern; well interference; oil flow paths.
Differentiation and grouping of complex-structured oil reservoirs in carbonate reservoirs in development management problems solving
Authors:   Ufa State Petroleum Technological University, Ufa, Russia, Mukhametshin V.Sh. , Khakimzyanov I.N. ,   Ufa State Petroleum Technological University, Ufa, Russia; «TatNIPIneft» PJSC «Tatneft» named after V.D.Shashin, Bugulma, Russia, Bakhtizin R.N. ,   Ufa State Petroleum Technological University, Ufa, Russia
Published: January 2022

The article presents the developed algorithm and the results of carried out differentiation and grouping of oil deposits in the carbonate reservoirs of the Volga-Ural oil and gas province, both under development and out of exploration, according to geological parameters, the determination of which is possible at the stage of geological exploration. A method for selecting an analogue deposit, which has been in development for a long time has been worked out for a deposit coming out of exploration in order to use the experience of developing an analogue deposit in the conditions of a deposit being put into development. The comparison of the selected groups of objects by geological parameters is carried out, the characteristics of the features of each of them are given, the main differences in the geological structure are revealed. It has been established that the features of the geological structure of various groups of objects are mostly determined by their tectonic-stratigraphic confinement. Keywords: free-flow production; increase of differential pressure; field-scale experiment; well pattern; well interference; oil flow paths.
Forecasting the viscosity properties of water-oil systems
Authors:   Azerbaijan State Oil and Industrial University, Baku, Azerbaijan, Ismayilov G.G. , Ismayilova F.B. ,   Azerbaijan State Oil and Industrial University, Baku, Azerbaijan, Musaev S.F. ,   British Petroleum (ВР), United Kingdom
Published: January 2022

In article possibilities of predicting the viscosity of stable multicomponent water-oil systems in practice, when it is impossible, for a number of reasons, to obtain their experimental values, are considered. A predictive model is proposed to describe the change in the viscosity properties of various oil-water emulsions depending on the degree of water saturation. It is shown that the proposed formula allows to determine the effective viscosity of water-oil systems in the entire range of variation of the velocity gradient in the absence of experimental data and is acceptable for engineering practice. Keywords: viscosity; water-oil emulsions; matematical description; water saturation degree; heterogeneous systems.
Estimation of corrosion aggression of aquatic media and corrosion resistance of steels of equipment of oil and gas condensate deposits
Authors:   Ufa State Aviation Technical University, Ufa, Russia, Khafizov A. R. , Chebotarev V. V. , Mugatabarova A. A. ,   Ufa State Aviation Technical University, Ufa, Russia
Published: January 2022

Corrosion destruction of the metal of the field equipment and gas pipelines of the oil and gas condensate field (OGCF) was revealed, the cause of which is carbon dioxide corrosion. In order to determine the corrosiveness of the OGCF equipment media, laboratory tests were carried out with periodic moisture condensation in an atmosphere of carbon dioxide, autoclave tests in the liquid phase at elevated temperatures and partial pressure of CO2, and laboratory tests in the gas-vapor phase in the presence of CO2. Tests were carried out on steel 20, the selected solutions were tested on pipe segments of 09G2S steels (well connections and loops) and J55LT (tubing) of 2 types (old, after operation in a well, and new, not operated). Studies have shown that steels used at OGCF (steel 20, J55LT and 09G2S) are not resistant to carbon dioxide corrosion. All items of equipment made of these steels will be potentially weakly resistant to corrosion in the oil and gas condensate field. It is proposed to conduct tests of corrosion inhibitors from various manufacturers in laboratory and field conditions. Recommendations are given for the corrosion inhibitor selected according to the test results. Keywords: local corrosion; aggressiveness of the environment; metal resistance; well piping; plume; tubing; laboratory tests; autoclave tests.
Diagnosing of the presence of liquid inclusions in the gas pipelines
Authors:   Azerbaijan State Oil and İndustry University, Baku, Azerbaijan, Ismayilov G. G. , Ismailov R. A. ,   Azerbaijan State Oil and İndustry University, Baku, Azerbaijan, Аhmadzada F. N. ,   «OilGasScientificResearchProject» institute, SOCAR, Baku, Azerbaijan
Published: January 2022

Due to the insufficiently effective gas drying in preparing it for further transport on the main pipeline in the composition of the gas remains a sufficient amount of fluid. The presence of liquid inclusions in the transported streams causes a nonequilibrium behavior of such systems, which is not taken into account in traditional calculation methods and increases the calculation error. Therefore, to select an adequate transfer mode, it is necessary to diagnose the internal structure of natural gas systems, which is the main task of studying this article. In working on the basis of a generalized model of motion of the relaxation medium in the pipeline by the introduction of the equation of the state for nonequilibrium gases, the calculated ratios are obtained to estimate the hydraulic and nonequilibrium parameters of the gas flow. In order to numerically implement these relations, a computational algorithm was drawn up and on the basis of the operational data of the actual gas pipeline obtained appropriate estimates. The results of the calculations were shown that both the density and the pressure relaxation times are rather significant. This indicates the presence of liquid inclusions in the transport stream. Thus, the authors proposed a numerically implemented procedure for diagnosing the presence of liquid inclusions in natural gases, which can be recommended for the use of services engaged in the operation of main gas pipelines. Keywords: natural gas; gas pipeline; liquid inclusions; model; diagnostics.